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  <title>Einstein@Home Gamma-ray Pulsar Discoveries in Fermi-LAT Data</title>
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<h2>Einstein@Home Gamma-ray Pulsar Discoveries in Fermi-LAT Data</h2>

<h3>Info</h3>
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<p>Einstein@Home searches data from NASA's Fermi Gamma-ray Space Telescope for signals from
gamma-ray pulsars. Pulsars are very compact stars with extreme physical properties compared to normal matter.
They are rapidly spinning neutron stars that emit pulses, observable from radio to
gamma-ray wavelengths.</p>
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<p>Searching for new pulsars is an enormous computational challenge, because their spin
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frequencies, sky position and other parameters are unknown in advance. Hence this is called a "blind" search, where one explicitly searches over a dense grid in parameter space. However, the
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number of discrete grid points to cover such multi-dimensional parameter spaces is
tremendous and  renders "brute forces approaches" computationally unfeasible.</p>
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<p>We have developed novel and much more efficient data-analysis methods for the volunteer
supercomputer Einstein@Home, which ranks  among the fastest 25 computer systems worldwide.
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Einstein@Home has enabled the discoveries of new gamma-ray pulsars that were previously
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inaccessible on computational grounds.</p>

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<p>These gamma-ray pulsar discoveries provide important contributions to advance
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our (yet very poor) understanding these stellar objects, their population, and their role
in our Universe.</p>
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<h3>The Einstein@Home searches for new gamma-ray pulsars</h3>
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<p>In 2014, we began the 4<sup>th</sup> Einstein@Home survey for gamma-ray pulsars, or
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"FGRP4". This survey incorporated many new advances that we learned during our previous
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searches and investigation of blind search methods. In addition, we were able to utilised the superior "Pass 8"
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data from the <i>Fermi</i>-LAT team, and search in longer data sets than ever before. In
combination, these improvements led to FGRP4 being our most sensitive survey to date.</p>

<p>We are very pleased to be able to announce the first set of results from FGRP4. Including the
discovery of PSR J1906+0722 at the beginning of this survey, these bring the total number of
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gamma-ray pulsars discovered by our Einstein@Home volunteers to 21. You can find the details and
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plots of all the new discoveries below!</p>

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<p>Currently we are working very hard to study all of the results from FGRP4, and we are hoping to
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  present these in a series of papers in the near future. </p>

<p>As always, we are extremely grateful to all of our volunteers, especially those whose computers
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contributed to these new discoveries. To say "we couldn't have done it without you!" would be a terrible
understatement!</p>
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<a href="img/psrs_vs_time.png"><img style="width: 550px;" alt="Timeline" src="img/psrs_vs_time.png"></a>
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<br>
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<p>The above plot illustrates the number of gamma-ray pulsars discovered in blind searches using NASA's Fermi Gamma-ray Space Telescope as a function of time (when the discoveries were published). Since the Fermi satellite was launched in 2008, it has been continuously scanning the entire sky and thus is providing an ever increasing data set. In principle, having more data available allows us to do more sensitive pulsar searches. However, at the same time, the computational cost also increases rapidly with the longer data time spans. Thus, as the graphic shows, over the last few years the only new such discoveries were made with Einstein@Home, thanks to the massive collective computing power provided by the Einstein@Home volunteers.</p>
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<br>


<h3>The discoveries made by Einstein@Home volunteers in detail</h3>

<p>Below we list for each pulsar the volunteers whose computers discovered the pulsar, 
and the date at which the pulsar was found.</p>

<p>We also provide a list of selected characteristics for each
of the pulsars. Right ascension is one of the two celestial coordinates that specify the
sky position of the pulsar. Declination is the second of these. The spin frequency describes
how many time per second the pulsar is rotating. The first frequency derivative describes
how much the pulsar is slowing down over time. The energy required to emit electromagnetic
radiation is drawn from the pulsar rotation. The characteristic age is a rough estimate of
the pulsar's age, computed from the spin frequency and its derivative. Finally, the
spin-down power is a measure of the total energy emitted by the pulsar. For comparison, our
Sun outputs roughly 4 x 10<sup>33</sup> erg per second. All pulsars below have a much higher
spin-down power.</p>

<p>The graphics on the right show the pulse profile of each pulsar in green, and the phase-folded
arrival times of all the gamma-ray photons on the far right. These plots require precise
knowledge of the pulsar sky position, its spin frequency, and spin frequency derivative.
Using these, each photon can be assigned a rotational phase, i.e., in which direction the
pulsar was pointing when the gamma-ray photon was emitted. Thus, we can reconstruct the
gamma-ray emission as a function of pulsar rotation phase and resolve the pulse profile.</p>

<br>

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<TH align="center">Pulsar</TH>
<TH align="center">RA</TH>
<TH align="center">DEC</TH>
<TH align="center">P<sub>bary</sub></TH>
<TH align="center">E@H sgnf</TH>
<TH align="center">Date</TH>
<TH align="center">E@H results</TH>
<TH align="center">prepfold</TH>
<TH align="center">volunteers (country)</TH>
<TH align="center">notes</TH>
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                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">Pulsar J0002+6216</td>
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                        <b>Volunteers (Country):</b><br>
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                        <a href="https://einsteinathome.org/show_user.php?userid=2013">UW-Madison CAE (USA)</a> and <a href="https://einsteinathome.org/show_user.php?userid=85912">RUElwell (USA)</a><br><br>
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                        <b>Date:</b><br>
                        31 Dec 2014<br><br>
                        <b>Survey:</b><br>
                        FGRP4<br><br>
                        <b>Selected pulsar parameters:</b><br>
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                        Right ascension: 00:02<br>
                        Declination: +62:16<br>
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                        Spin frequency: 8.67 Hz<br>
                        First frequency derivate: -4.48 x 10<sup>-13</sup> Hz/s<br>
                        Characteristic age: 306.3 kyrs<br>
                        Spin-down power: 1.5 x 10<sup>35</sup> erg/s<br>
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                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">Pulsar J0359+5414</td>
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                        <img style="width: 250px;" alt="J0359" src="img/fhist-J0359.png">
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                        <b>Volunteers (Country):</b><br>
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                        <a href="https://einsteinathome.org/show_user.php?userid=642754">Whelton Miller (USA)</a>, <a href="https://einsteinathome.org/show_user.php?userid=342084">ATLAS AEI Hannover (Germany)</a> and <a href="https://einsteinathome.org/show_user.php?userid=609953">Delty (USA)</a><br><br>
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                        <b>Date:</b><br>
                        15 Dec 2014<br><br>
                        <b>Survey:</b><br>
                        FGRP4<br><br>
                        <b>Selected pulsar parameters:</b><br>
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                        Right ascension: 03:59<br>
                        Declination: +54:14<br>
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                        Spin frequency: 12.59 Hz<br>
                        First frequency derivate: -2.65 x 10<sup>-12</sup> Hz/s<br>
                        Characteristic age: 75.2 kyrs<br>
                        Spin-down power: 1.3 x 10<sup>36</sup> erg/s<br>
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                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">Pulsar J0554+3107</td>
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                        <b>Volunteers (Country):</b><br>
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                        <a href="https://einsteinathome.org/show_user.php?userid=107849">David Z (Canada)</a> and <a href="https://einsteinathome.org/show_user.php?userid=557206">Test (France)</a><br><br>
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                        <b>Date:</b><br>
                        06 Jan 2012<br><br>
                        <b>Survey:</b><br>
                        FGRP1<br><br>
                        <b>Selected pulsar parameters:</b><br>
                        Right ascension: 05:54:05.01(3)<br>
                        Declination: +31:07:41(4)<br>
                        Spin frequency: 2.15 Hz<br>
                        First frequency derivate: -0.66 x 10<sup>-12</sup> Hz/s<br>
                        Characteristic age: 51.7 kyrs<br>
                        Spin-down power: 5.6 x 10<sup>34</sup> erg/s<br>
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                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">Pulsar J0631+0646</td>
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                        <b>Volunteers (Country):</b><br>
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                        <a href="https://einsteinathome.org/show_user.php?userid=156950">KataJun (Japan) </a> and <a href="https://einsteinathome.org/show_user.php?userid=719193">huwar</a><br><br>
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                        <b>Date:</b><br>
                        20 Jan 2015<br><br>
                        <b>Survey:</b><br>
                        FGRP4<br><br>
                        <b>Selected pulsar parameters:</b><br>
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                        Right ascension: 06:31<br>
                        Declination: +06:46<br>
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                        Spin frequency: 9.01 Hz<br>
                        First frequency derivate: -2.94 x 10<sup>-13</sup> Hz/s<br>
                        Characteristic age: 486.1 kyrs<br>
                        Spin-down power: 1.0 x 10<sup>35</sup> erg/s<br>
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                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">Pulsar J1057-5851</td>
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                        <img style="width: 250px;" alt="J1057" src="img/fhist-J1057.png">
                        <img style="width: 196px; height: 373px;" alt="J1057" src="img/tvsph-J1057.png">
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                        <b>Volunteers (Country):</b><br>
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                        <a href="https://einsteinathome.org/show_user.php?userid=573605">Syracuse University (USA)</a> and <a href="https://einsteinathome.org/show_user.php?userid=590140">LLO_LDAS (USA)</a><br><br>
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                        <b>Date:</b><br>
                        28 Oct 2014<br><br>
                        <b>Survey:</b><br>
                        FGRP4<br><br>
                        <b>Selected pulsar parameters:</b><br>
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                        Right ascension: 10:57<br>
                        Declination: -58:51<br>
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                        Spin frequency: 1.61 Hz<br>
                        First frequency derivate: -2.61 x 10<sup>-13</sup> Hz/s<br>
                        Characteristic age: 97.7 kyrs<br>
                        Spin-down power: 1.7 x 10<sup>34</sup> erg/s<br>
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                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">Pulsar J1105-6037</td>
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                        <img style="width: 250px;" alt="J1105" src="img/fhist-J1105.png">
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                        <b>Volunteers (Country):</b><br>
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                        <a href="https://einsteinathome.org/show_user.php?userid=342084">ATLAS AEI Hannover (Germany)</a> and <a href="https://einsteinathome.org/show_user.php?userid=573605">Syracuse University (USA)</a><br><br>
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                        <b>Date:</b><br>
                        03 Oct 2014<br><br>
                        <b>Survey:</b><br>
                        FGRP4<br><br>
                        <b>Selected pulsar parameters:</b><br>
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                        Right ascension: 11:05<br>
                        Declination: -60:37<br>
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                        Spin frequency: 5.13 Hz<br>
                        First frequency derivate: -5.75 x 10<sup>-13</sup> Hz/s<br>
                        Characteristic age: 141.4 kyrs<br>
                        Spin-down power: 1.2 x 10<sup>35</sup> erg/s<br>
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                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">Pulsar  J1208-6238</td>
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                        <b>Volunteers (Country):</b><br>
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                        <a href="https://einsteinathome.org/show_user.php?userid=2013">UW-Madison CAE (USA)</a> and <a href="https://einsteinathome.org/show_user.php?userid=582278">UH RCC - Maxwell (USA)</a><br><br>
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                        <b>Date:</b><br>
                        03 Oct 2014<br><br>
                        <b>Survey:</b><br>
                        FGRP4<br><br>
                        <b>Selected pulsar parameters:</b><br>
                        Right ascension: 12:08:13.96(6)<br>
                        Declination: -62:38:02.3(4)<br>
                        Spin frequency: 2.27 Hz<br>
                        First frequency derivate: -1.68 x 10<sup>-11</sup> Hz/s<br>
                        Characteristic age: 2,700 yrs<br>
                        Spin-down power: 1.5 x 10<sup>36</sup> erg/s<br>
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                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">Pulsar J1350-6225</td>
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                        <img style="width: 250px;" alt="J1350" src="img/fhist-J1350.png">
                        <img style="width: 196px; height: 373px;" alt="J1350" src="img/tvsph-J1350.png">
                      </td>
                    </tr>
                    <tr>
                      <td style="vertical-align: top;">
                        <b>Volunteers (Country):</b><br>
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444
                        <a href="https://einsteinathome.org/show_user.php?userid=11550">PeRu (Czech Republic)</a> and <a href="https://einsteinathome.org/show_user.php?userid=529309">Bryden Kanngiesser (Canada)</a><br><br>
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                        <b>Date:</b><br>
                        19 Jun 2015<br><br>
                        <b>Survey:</b><br>
                        FGRP4<br><br>
                        <b>Selected pulsar parameters:</b><br>
450
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                        Right ascension: 13:50<br>
                        Declination: -62:25<br>
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                        Spin frequency: 7.24 Hz<br>
                        First frequency derivate: -4.65 x 10<sup>-13</sup> Hz/s<br>
                        Characteristic age: 246.4 kyrs<br>
                        Spin-down power: 1.3 x 10<sup>35</sup> erg/s<br>
                      </td>
                    </tr>
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                </table>
                <br><hr>
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                        <table style="text-align: left; width: 202px; height: 41px; font-weight: bold;" border="0" cellpadding="0" cellspacing="0">
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                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">
                                Pulsar J1422-6138
                              </td>
                            </tr>
                          </tbody>
                        </table>
                        <br>
                      </td>
                      <td colspan="1" rowspan="2" style="vertical-align: top;" width="460">
                        <img style="width: 250px;" alt="J1422" src="img/fhist-J1422.png">
                        <img style="width: 196px; height: 373px;" alt="J1422" src="img/tvsph-J1422.png">
                      </td>
                    </tr>
                    <tr>
                      <td style="vertical-align: top;">
                        <b>Volunteers (Country):</b><br>
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Colin Clark committed
490
                        <a href="https://einsteinathome.org/show_user.php?userid=63414">Mak-ino (Japan)</a> and <a href="https://einsteinathome.org/show_user.php?userid=574023">Thomas M. Jackson (USA)</a><br><br>
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                        <b>Date:</b><br>
                        14 Dec 2011<br><br>
                        <b>Survey:</b><br>
                        FGRP1<br><br>
                        <b>Selected pulsar parameters:</b><br>
                        Right ascension: 14:22:27.07(1)<br>
                        Declination: -61:38:28(1)<br>
                        Spin frequency: 2.93 Hz<br>
                        First frequency derivate: -0.83 x 10<sup>-12</sup> Hz/s<br>
                        Characteristic age: 55.8 kyrs<br>
                        Spin-down power: 9.6 x 10<sup>34</sup> erg/s<br>
                      </td>
                    </tr>
                  </tbody>
                </table>
                <br><hr>
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                <table style="text-align: left; width: 100%;" border="0" cellpadding="0" cellspacing="0">
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                        <table style="text-align: left; width: 202px; height: 41px; font-weight: bold;" border="0" cellpadding="0" cellspacing="0">
                          <tbody>
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                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">
                                Pulsar J1522-5735
                              </td>
                            </tr>
                          </tbody>
                        </table>
                        <br>
                      </td>
                      <td colspan="1" rowspan="2" style="vertical-align: top;" width="460">
                        <img style="width: 250px;" alt="J1522" src="img/fhist-J1522.png">
                        <img style="width: 196px; height: 373px;" alt="J1522" src="img/tvsph-J1522.png">
                      </td>
                    </tr>
                    <tr>
                      <td style="vertical-align: top;">
                        <b>Volunteers (Country):</b><br>
Colin Clark's avatar
Colin Clark committed
536
                        <a href="https://einsteinathome.org/show_user.php?userid=337084">The NEMO computing cluster (USA)</a> and <a href="https://einsteinathome.org/show_user.php?userid=199608">Chen (USA)</a><br><br>
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                        <b>Date:</b><br>
                        30 Sep 2011<br><br>
                        <b>Survey:</b><br>
                        FGRP1<br><br>
                        <b>Selected pulsar parameters:</b><br>
                        Right ascension: 15:22:05.3(1)<br>
                        Declination: -57:35:00(1)<br>
                        Spin frequency: 9.79 Hz<br>
                        First frequency derivate: -2.99 x 10<sup>-12</sup> Hz/s<br>
                        Characteristic age: 51.8 kyrs<br>
                        Spin-down power: 115.7 x 10<sup>34</sup> erg/s<br>
                      </td>
                    </tr>
                  </tbody>
                </table>
                <br><hr>
              </td>
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            <tr>
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                <table style="text-align: left; width: 100%;" border="0" cellpadding="0" cellspacing="0">
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                      <td style="vertical-align: top;">
                        <table style="text-align: left; width: 202px; height: 41px; font-weight: bold;" border="0" cellpadding="0" cellspacing="0">
                          <tbody>
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                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">Pulsar J1528-5838</td>
                            </tr>
                          </tbody>
                        </table>
                        <br>
                      </td>
                      <td colspan="1" rowspan="2" style="vertical-align: top;" width="460">
                        <img style="width: 250px;" alt="J1528" src="img/fhist-J1528.png">
                        <img style="width: 196px; height: 373px;" alt="J1528" src="img/tvsph-J1528.png">
                      </td>
                    </tr>
                    <tr>
                      <td style="vertical-align: top;">
                        <b>Volunteers (Country):</b><br>
Colin Clark's avatar
Colin Clark committed
580
                        <a href="https://einsteinathome.org/show_user.php?userid=10024">fred c (USA)</a> and <a href="https://einsteinathome.org/show_user.php?userid=734409">Gabriel Vasquez</a><br><br>
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                        <b>Date:</b><br>
                        25 Mar 2015<br><br>
                        <b>Survey:</b><br>
                        FGRP4<br><br>
                        <b>Selected pulsar parameters:</b><br>
586
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                        Right ascension: 15:28<br>
                        Declination: -58:38<br>
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                        Spin frequency: 2.81 Hz<br>
                        First frequency derivate: -1.96 x 10<sup>-13</sup> Hz/s<br>
                        Characteristic age: 227.6 kyrs<br>
                        Spin-down power: 2.2 x 10<sup>34</sup> erg/s<br>
                      </td>
                    </tr>
                  </tbody>
                </table>
                <br><hr>
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            </tr>
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                <table style="text-align: left; width: 100%;" border="0" cellpadding="0" cellspacing="0">
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                        <table style="text-align: left; width: 202px; height: 41px; font-weight: bold;" border="0" cellpadding="0" cellspacing="0">
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                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">Pulsar J1623-5005</td>
                            </tr>
                          </tbody>
                        </table>
                        <br>
                      </td>
                      <td colspan="1" rowspan="2" style="vertical-align: top;" width="460">
                        <img style="width: 250px;" alt="J1623" src="img/fhist-J1623.png">
                        <img style="width: 196px; height: 373px;" alt="J1623" src="img/tvsph-J1623.png">
                      </td>
                    </tr>
                    <tr>
                      <td style="vertical-align: top;">
                        <b>Volunteers (Country):</b><br>
Colin Clark's avatar
Colin Clark committed
624
                        <a href="https://einsteinathome.org/show_user.php?userid=633539">r4p</a> and <a href="https://einsteinathome.org/show_user.php?userid=141425">Greg Dorais (USA)</a><br><br>
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                        <b>Date:</b><br>
                        04 Oct 2014<br><br>
                        <b>Survey:</b><br>
                        FGRP4<br><br>
                        <b>Selected pulsar parameters:</b><br>
630
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                        Right ascension: 16:23<br>
                        Declination: -50:05<br>
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                        Spin frequency: 11.75 Hz<br>
                        First frequency derivate: -5.75 x 10<sup>-13</sup> Hz/s<br>
                        Characteristic age: 323.9 kyrs<br>
                        Spin-down power: 2.7 x 10<sup>35</sup> erg/s<br>
                      </td>
                    </tr>
                  </tbody>
                </table>
                <br><hr>
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            </tr>
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                <table style="text-align: left; width: 100%;" border="0" cellpadding="0" cellspacing="0">
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                        <table style="text-align: left; width: 202px; height: 41px; font-weight: bold;" border="0" cellpadding="0" cellspacing="0">
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                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">Pulsar J1624-4041</td>
                            </tr>
                          </tbody>
                        </table>
                        <br>
                      </td>
                      <td colspan="1" rowspan="2" style="vertical-align: top;" width="460">
                        <img style="width: 250px;" alt="J1624" src="img/fhist-J1624.png">
                        <img style="width: 196px; height: 373px;" alt="J1624" src="img/tvsph-J1624.png">
                      </td>
                    </tr>
                    <tr>
                      <td style="vertical-align: top;">
                        <b>Volunteers (Country):</b><br>
Colin Clark's avatar
Colin Clark committed
668
                        <a href="https://einsteinathome.org/show_user.php?userid=313526">xio.nyc (Antarctica)</a> and <a href="https://einsteinathome.org/show_user.php?userid=495451">Hung Tran (USA)</a><br><br>
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                        <b>Date:</b><br>
                        20 Dec 2014<br><br>
                        <b>Survey:</b><br>
                        FGRP4<br><br>
                        <b>Selected pulsar parameters:</b><br>
674
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                        Right ascension: 16:24<br>
                        Declination: -40:41<br>
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                        Spin frequency: 5.96 Hz<br>
                        First frequency derivate: -1.68 x 10<sup>-13</sup> Hz/s<br>
                        Characteristic age: 562.9 kyrs<br>
                        Spin-down power: 3.9 x 10<sup>34</sup> erg/s<br>
                      </td>
                    </tr>
                  </tbody>
                </table>
                <br><hr>
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                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">Pulsar J1641-5317</td>
                            </tr>
                          </tbody>
                        </table>
                        <br>
                      </td>
                      <td colspan="1" rowspan="2" style="vertical-align: top;" width="460">
                        <img style="width: 250px;" alt="J1641" src="img/fhist-J1641.png">
                        <img style="width: 196px; height: 373px;" alt="J1641" src="img/tvsph-J1641.png">
                      </td>
                    </tr>
                    <tr>
                      <td style="vertical-align: top;">
                        <b>Volunteers (Country):</b><br>
                        <a href="https://einsteinathome.org/show_user.php?userid=2013">UW-Madison CAE (USA)</a> and <a href="https://einsteinathome.org/show_user.php?userid=342084">ATLAS AEI Hannover (Germany)</a><br><br>
                        <b>Date:</b><br>
                        30 Dec 2015<br><br>
                        <b>Survey:</b><br>
                        FGRP4<br><br>
                        <b>Selected pulsar parameters:</b><br>
                        Right ascension: 16:41<br>
                        Declination: -53:17<br>
                        Spin frequency: 5.71 Hz<br>
                        First frequency derivate: -1.21 x 10<sup>-13</sup> Hz/s<br>
                        Characteristic age: 750 kyrs<br>
                        Spin-down power: 2.7 x 10<sup>34</sup> erg/s<br>
                      </td>
                    </tr>
                  </tbody>
                </table>
                <br><hr>
              </td>
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                        <table style="text-align: left; width: 202px; height: 41px; font-weight: bold;" border="0" cellpadding="0" cellspacing="0">
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                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">Pulsar J1650-4601</td>
                            </tr>
                          </tbody>
                        </table>
                        <br>
                      </td>
                      <td colspan="1" rowspan="2" style="vertical-align: top;" width="460">
                        <img style="width: 250px;" alt="J1650" src="img/fhist-J1650.png">
                        <img style="width: 196px; height: 373px;" alt="J1650" src="img/tvsph-J1650.png">
                      </td>
                    </tr>
                    <tr>
                      <td style="vertical-align: top;">
                        <b>Volunteers (Country):</b><br>
Colin Clark's avatar
Colin Clark committed
756
                        <a href="https://einsteinathome.org/show_user.php?userid=573605">Syracuse University (USA)</a> and <a href="https://einsteinathome.org/show_user.php?userid=607613">Eric Schwartz (USA)</a><br><br>
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                        <b>Date:</b><br>
                        17 Oct 2014<br><br>
                        <b>Survey:</b><br>
                        FGRP4<br><br>
                        <b>Selected pulsar parameters:</b><br>
762
763
                        Right ascension: 16:50<br>
                        Declination: -46:01<br>
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                        Spin frequency: 7.87 Hz<br>
                        First frequency derivate: -9.37 x 10<sup>-13</sup> Hz/s<br>
                        Characteristic age: 133.0 kyrs<br>
                        Spin-down power: 2.9 x 10<sup>35</sup> erg/s<br>
                      </td>
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                    </tr>
                  </tbody>
                </table>
                <br><hr>
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                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">Pulsar J1817-1742</td>
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                          </tbody>
                        </table>
                        <br>
                      </td>
                      <td colspan="1" rowspan="2" style="vertical-align: top;" width="460">
                        <img style="width: 250px;" alt="J1817" src="img/fhist-J1817.png">
                        <img style="width: 196px; height: 373px;" alt="J1817" src="img/tvsph-J1817.png">
                      </td>
                    </tr>
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                      <td style="vertical-align: top;">
                        <b>Volunteers (Country):</b><br>
                        <a href="https://einsteinathome.org/show_user.php?userid=132914">dbillenness (Canada)</a> and <a href="https://einsteinathome.org/show_user.php?userid=499225">Jon Kerfoot (USA)</a><br><br>
                        <b>Date:</b><br>
                        24 Dec 2015<br><br>
                        <b>Survey:</b><br>
                        FGRP4<br><br>
                        <b>Selected pulsar parameters:</b><br>
                        Right ascension: 18:17<br>
                        Declination: -17:42<br>
                        Spin frequency: 6.68 Hz<br>
                        First frequency derivate: -9.18 x 10<sup>-13</sup> Hz/s<br>
                        Characteristic age: 115 kyrs<br>
                        Spin-down power: 2.42 x 10<sup>35</sup> erg/s<br>
                      </td>
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                    </tr>
                  </tbody>
                </table>
                <br><hr>
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                        <table style="text-align: left; width: 202px; height: 41px; font-weight: bold;" border="0" cellpadding="0" cellspacing="0">
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                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">Pulsar J1827-1446</td>
                            </tr>
                          </tbody>
                        </table>
                        <br>
                      </td>
                      <td colspan="1" rowspan="2" style="vertical-align: top;" width="460">
                        <img style="width: 250px;" alt="J1827" src="img/fhist-J1827.png">
                        <img style="width: 196px; height: 373px;" alt="J1827" src="img/tvsph-J1827.png">
                      </td>
                    </tr>
                    <tr>
                      <td style="vertical-align: top;">
                        <b>Volunteers (Country):</b><br>
Colin Clark's avatar
Colin Clark committed
844
                        <a href="https://einsteinathome.org/show_user.php?userid=342084">ATLAS AEI Hannover (Germany)</a> and <a href="https://einsteinathome.org/show_user.php?userid=590140">LLO_LDAS (USA)</a><br><br>
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                        <b>Date:</b><br>
                        19 Dec 2014<br><br>
                        <b>Survey:</b><br>
                        FGRP4<br><br>
                        <b>Selected pulsar parameters:</b><br>
850
851
                        Right ascension: 18:27<br>
                        Declination: -14:46<br>
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                        Spin frequency: 2.00 Hz<br>
                        First frequency derivate: -1.82 x 10<sup>-13</sup> Hz/s<br>
                        Characteristic age: 174.5 kyrs<br>
                        Spin-down power: 1.4 x 10<sup>34</sup> erg/s<br>
                      </td>
                    </tr>
                  </tbody>
                </table>
                <br><hr>
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                        <table style="text-align: left; width: 202px; height: 41px; font-weight: bold;" border="0" cellpadding="0" cellspacing="0">
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                            <tr>
                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">Pulsar J1844-0346</td>
                            </tr>
                          </tbody>
                        </table>
                        <br>
                      </td>
                      <td colspan="1" rowspan="2" style="vertical-align: top;" width="460">
                        <img style="width: 250px;" alt="J1844" src="img/fhist-J1844.png">
                        <img style="width: 196px; height: 373px;" alt="J1844" src="img/tvsph-J1844.png">
                      </td>
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                      <td style="vertical-align: top;">
                        <b>Volunteers (Country):</b><br>
Colin Clark's avatar
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                        <a href="https://einsteinathome.org/show_user.php?userid=510534">Aurelien FAUCHEUX (France)</a> and <a href="https://einsteinathome.org/show_user.php?userid=560585">Roger (USA)</a><br><br>
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                        <b>Date:</b><br>
                        18 Nov 2014<br><br>
                        <b>Survey:</b><br>
                        FGRP4<br><br>
                        <b>Selected pulsar parameters:</b><br>
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                        Right ascension: 18:44<br>
                        Declination: -03:46<br>
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                        Spin frequency: 8.86 Hz<br>
                        First frequency derivate: -1.21 x 10<sup>-11</sup> Hz/s<br>
                        Characteristic age: 11.6 kyrs<br>
                        Spin-down power: 4.2 x 10<sup>36</sup> erg/s<br>
                      </td>
                    </tr>
                  </tbody>
                </table>
                <br><hr>
              </td>
            </tr>
            <!-- psr end //-->

            <!-- psr start //-->
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                <table style="text-align: left; width: 100%;" border="0" cellpadding="0" cellspacing="0">
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                        <table style="text-align: left; width: 202px; height: 41px; font-weight: bold;" border="0" cellpadding="0" cellspacing="0">
                          <tbody>
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                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">
                                Pulsar J1906+0722
                              </td>
                            </tr>
                          </tbody>
                        </table>
                        <br>
                      </td>
                      <td colspan="1" rowspan="2" style="vertical-align: top;" width="460">
                        <img style="width: 250px;" alt="J1906" src="img/fhist-J1906.png">
                        <img style="width: 196px; height: 373px;" alt="J1906" src="img/tvsph-J1906.png">
                      </td>
                    </tr>
                    <tr>
                      <td style="vertical-align: top;">
                        <b>Volunteers (Country):</b><br>
Colin Clark's avatar
Colin Clark committed
935
                        <a href="https://einsteinathome.org/show_user.php?userid=614093">Connor Barry (USA)</a> and <a href="https://einsteinathome.org/show_user.php?userid=96440">Richard Johnson (USA)</a><br><br>
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                        <b>Date:</b><br>
                        11 Sep 2014<br><br>
                        <b>Survey:</b><br>
                        FGRP4<br><br>
                        <b>Selected pulsar parameters:</b><br>
                        Right ascension: 19:06:31.20(1)<br>
                        Declination: +07:22:55.8(4)<br>
                        Spin frequency: 8.97 Hz<br>
                        First frequency derivate: -2.88 x 10<sup>-12</sup> Hz/s<br>
                        Characteristic age: 49.2 kyrs<br>
                        Spin-down power: 1.02 x 10<sup>36</sup> erg/s<br>
                      </td>
                    </tr>
                  </tbody>
                </table>
                <br><hr>
              </td>
            </tr>
            <!-- psr end //-->
            <!-- psr start //-->
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                <table style="text-align: left; width: 100%;" border="0" cellpadding="0" cellspacing="0">
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                        <table style="text-align: left; width: 202px; height: 41px; font-weight: bold;" border="0" cellpadding="0" cellspacing="0">
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                              <td style="vertical-align: top; background-color: rgb(204, 204, 204); text-align: center;">
                                Pulsar J1932+1916
                              </td>
                            </tr>
                          </tbody>
                        </table>
                        <br>
                      </td>
                      <td colspan="1" rowspan="2" style="vertical-align: top;" width="460">
                        <img style="width: 250px;" alt="J1932" src="img/fhist-J1932.png">
                        <img style="width: 196px; height: 373px;" alt="J1932" src="img/tvsph-J1932.png">
                      </td>
                    </tr>
                    <tr>
                      <td style="vertical-align: top;">
                        <b>Volunteers (Country):</b><br>
Colin Clark's avatar
Colin Clark committed
981
                        <a href="https://einsteinathome.org/show_user.php?userid=125291">Doug Lean (Australia)</a> and <a href="https://einsteinathome.org/show_user.php?userid=103374">Hans-Peter Tobler (Germany)</a><br><br>
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                        <b>Date:</b><br>
                        19 Sep 2011<br><br>
                        <b>Survey:</b><br>
                        FGRP1<br><br>
                        <b>Selected pulsar parameters:</b><br>
                        Right ascension: 19:32:19.70(4)<br>
                        Declination: +19:16:39(1)<br>
                        Spin frequency: 4.80 Hz<br>
                        First frequency derivate: -2.15 x 10<sup>-12</sup> Hz/s<br>
                        Characteristic age: 35.4 kyrs<br>
                        Spin-down power: 40.7 x 10<sup>34</sup> erg/s<br>
                      </td>
                    </tr>
                  </tbody>
                </table>
                <br><hr>
              </td>
            </tr>
            <!-- psr end //-->
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