Einstein@Home Gamma-ray Pulsar Discoveries in Fermi-LAT Data

Info

Einstein@Home searches data from the Large Area Telescope (LAT) onboard 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.

Searching for new pulsars is an enormous computational challenge, because their spin frequencies, sky position and other parameters are unknown in advance and must be covered a dense grid of search locations. The number of grid points required to cover such multi-dimensional parameter spaces is tremendous and renders "brute forces approaches" computationally unfeasible.

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. Einstein@Home has enabled the discoveries of new gamma-ray pulsars that were previously inaccessible on computational grounds.

These gamma-ray pulsar discoveries provide important contributions to advance our (yet very poor) understanding these stellar objects, their population, and their role in our Universe.

As always, we are extremely grateful to all of our volunteers, especially those whose computers contributed to these new discoveries. To say "we couldn't have done it without you!" would be a terrible understatement!


The Einstein@Home surveys for new gamma-ray pulsars


FGRP1

Einstein@Home's searches for gamma-ray pulsars began in 2011, using just over 3 years of Fermi-LAT data. Prior to this point, searches had been run "offline" on academic computing clusters. However, the computational cost of these searches increases rapidly with time, and so these searches quickly became infeasible. The much larger computational power offered by Einstein@Home allowed the search effort continue using longer data sets that provide increased sensitivity, and greater potential for discoveries. Four new pulsars were found in the first Einstein@Home Fermi Gamma-ray Pulsar survey (FGRP1).

Jump to FGRP1 discoveries

Publications:
Einstein@Home discovery of four young gamma-ray pulsars in Fermi-LAT data

FGRP4

In 2014, we began the 4th Einstein@Home survey for gamma-ray pulsars, or "FGRP4". This survey incorporated many new advances that we learned during our previous searches and investigation of blind search methods. In addition, we were able to utilised the superior "Pass 8" data from the Fermi-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.

With the publication in Science Advances of the discoveries of two millisecond pulsars (J1035-6720 and J1744-7619), we have now published all pulsar discoveries made during FGRP4. These amount to 23 new pulsars, almost a third of all gamma-ray pulsars that had been discovered in blind searches at the time.

Jump to FGRP4 discoveries

Publications:
PSR J1906+0722: An elusive gamma-ray pulsar
The braking index of a radio-quiet gamma-ray pulsar
The Einstein@Home Gamma-ray Pulsar Survey. I. Search Methods, Sensitivity and Discovery of New Young Gamma-ray Pulsars
The Einstein@Home Gamma-Ray Pulsar Survey II. Source Selection, Spectral Analysis and Multi-wavelength Follow-up
Einstein@Home discovers a radio-quiet gamma-ray millisecond pulsar

FGRP5


After the success of FGRP4, we began the fifth iteration of our survey, this time searching for pulsars in unidentified pulsar-like gamma-ray sources detected in the central region of the Milky Way, using almost 9 years of data. Later on, FGRP5 was expanded to search for pulsars in sources from the latest Fermi-LAT Fourth Source Catalog (4FGL) using 11.5 years of data.

To date we have made 14 new pulsar discoveries in FGRP5: 3 from the initial batch of inner-Galaxy sources, and 11 from 4FGL sources; and independently re-detected one pulsar recently discovered in a radio survey. FGRP5 is still ongoing, so we hope for more discoveries in the near future, and are preparing a publication with full details on the newly discovered pulsars.

Jump to FGRP5 discoveries

FGRPB1

In addition to the isolated pulsar surveys (the FGRPX series), Einstein@Home also searches for binary gamma-ray pulsars. These searches are orders-of-magnitude more difficult than isolated pulsar surveys; the pulsar's orbital motion modulates its pulsed signal, and three extra parameters describing the size, period and phase of the orbit are required to account for this. Optical observations of candidate "black widow" and "redback" counterparts can constrain these parameters, reducing the search space to a more manageable (but still enormous!) volume.

Two binary millisecond pulsars have been found in FGRPB1: an extremely compact "black widow" pulsar, PSR J1653-0158, whose 75-minute orbit is the shortest of any known pulsar binary; and PSR J2039-5617, a "redback" pulsar with interesting long-term variable behavior.

Jump to FGRPB1 discoveries

Publications:
Discovery of a Gamma-ray Black Widow Pulsar by GPU-accelerated Einstein@Home
Einstein@Home discovery of the gamma-ray millisecond pulsar PSR J2039-5617 confirms its predicted redback nature

Timeline of gamma-ray pulsar discoveries in searches of Fermi-LAT data.

Timeline

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 nearly all discoveries were made with Einstein@Home, thanks to the massive collective computing power provided by the Einstein@Home volunteers.



The discoveries made by Einstein@Home volunteers in detail

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

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 1033 erg per second. Most pulsars below have a much higher spin-down power.

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.



FGRPB1 Discoveries

Pulsar J1653-0158

J1653 J1653
Volunteers (Country):
Yi-Sheng Wu (Taiwan) and Daniel Scott (USA)

Survey:
FGRPB1

Selected pulsar parameters:
Right ascension: 16:53
Declination: -01:58
Spin frequency: 508.21 Hz
First frequency derivate: -6.20 x 10-16 Hz/s
Orbital period: 75 min
Characteristic age: 37 Gyrs
Spin-down power: 4.4 x 1033 erg/s

Pulsar J2039-5617

J2039 J2039
Volunteers (Country):
Peter

Survey:
FGRPB1

Selected pulsar parameters:
Right ascension: 20:39
Declination: -56:17
Spin frequency: 377.23 Hz
First frequency derivate: -2.02 x 10-15 Hz/s
Orbital period: 5.3 h
Characteristic age: 4 Gyrs
Spin-down power: 2.5 x 1034 erg/s

FGRP5 Discoveries

Pulsar J0418+6635

J0418 J0418
This pulsar was originally discovered in radio data from the Green Bank Telescope,
but independently detected shortly afterwards in our Einstein@Home survey


Volunteers (Country):
Antonio de Robertis and SALIX (Poland)

Date:
01 Jun 2020

Survey:
FGRP5

Selected pulsar parameters:
Right ascension: 04:18
Declination: +66:35
Spin frequency: 343.62 Hz
First frequency derivate: -1.61 x 10-15 Hz/s
Characteristic age: 3.4 Gyrs
Spin-down power: 2.2 x 1034 erg/s


Pulsar J0744-2525

J0744 J0744
Volunteers (Country):
Armin Burkhardt speaking for MPI/FKF (Germany) and ATLAS AEI Hannover (Germany)

Date:
15 May 2020

Survey:
FGRP5

Selected pulsar parameters:
Right ascension: 07:44
Declination: -25:25
Spin frequency: 10.87 Hz
First frequency derivate: -1.13 x 10-13 Hz/s
Characteristic age: 1.5 Myrs
Spin-down power: 4.8 x 1034 erg/s


Pulsar J0802-5613

J0802 J0802
Volunteers (Country):
ATLAS AEI Hannover (Germany) and localou

Date:
18 Dec 2020

Survey:
FGRP5

Selected pulsar parameters:
Right ascension: 08:02
Declination: -56:13
Spin frequency: 3.65 Hz
First frequency derivate: -3.68 x 10-14 Hz/s
Characteristic age: 1.5 Myrs
Spin-down power: 5.3 x 1033 erg/s


Pulsar J1139-6247

J1139 J1139
Volunteers (Country):
ATLAS AEI Hannover (Germany)

Date:
19 Jul 2020

Survey:
FGRP5

Selected pulsar parameters:
Right ascension: 11:39
Declination: -62:47
Spin frequency: 8.30 Hz
First frequency derivate: -2.79 x 10-13 Hz/s
Characteristic age: 470 kyrs
Spin-down power: 9.2 x 1034 erg/s


Pulsar J1203-6242

J1203 J1203
Volunteers (Country):
Lightstalker (Germany) and ATLAS AEI Hannover (Germany)

Date:
26 May 2020

Survey:
FGRP5

Selected pulsar parameters:
Right ascension: 12:03
Declination: -62:42
Spin frequency: 9.94 Hz
First frequency derivate: -4.36 x 10-12 Hz/s
Characteristic age: 35 kyrs
Spin-down power: 1.7 x 1036 erg/s


Pulsar J1231-5113

J1231 J1231
Volunteers (Country):
Sette Claudio and pinballlaryy

Date:
12 Jun 2020

Survey:
FGRP5

Selected pulsar parameters:
Right ascension: 12:31
Declination: -51:13
Spin frequency: 4.84 Hz
First frequency derivate: -2.74 x 10-15 Hz/s
Characteristic age: 28 Myrs
Spin-down power: 5.2 x 1032 erg/s


Pulsar J1231-6511

J1231 J1231
Volunteers (Country):
ATLAS AEI Hannover (Germany)

Date:
28 Apr 2021

Survey:
FGRP5

Selected pulsar parameters:
Right ascension: 12:31
Declination: -65:11
Spin frequency: 4.04 Hz
First frequency derivate: -4.64 x 10-13 Hz/s
Characteristic age: 138 kyrs
Spin-down power: 7.4 x 1034 erg/s


Pulsar J1335-5656

J1335 J1335
Volunteers (Country):
ATLAS AEI Hannover (Germany) and Michele Fornino (Italy)

Date:
13 Aug 2020

Survey:
FGRP5

Selected pulsar parameters:
Right ascension: 13:35
Declination: -56:56
Spin frequency: 308.86 Hz
First frequency derivate: -1.15 x 10-15 Hz/s
Characteristic age: 4.9 Gyrs
Spin-down power: 1.4 x 1034 erg/s


Pulsar J1358-6025

J1358 J1358
Volunteers (Country):
ATLAS AEI Hannover (Germany) and Thorin Oakenshield

Date:
21 Jul 2020

Survey:
FGRP5

Selected pulsar parameters:
Right ascension: 13:58
Declination: -60:25
Spin frequency: 16.52 Hz
First frequency derivate: -8.23 x 10-13 Hz/s
Characteristic age: 318 kyrs
Spin-down power: 5.4 x 1035 erg/s


Pulsar J1447-5757

1447 J1447
Volunteers (Country):
ATLAS AEI Hannover (Germany)

Date:
20 Mar 2021

Survey:
FGRP5

Selected pulsar parameters:
Right ascension: 14:47
Declination: -57:57
Spin frequency: 6.30 Hz
First frequency derivate: -4.66 x 10-13 Hz/s
Characteristic age: 214 kyrs
Spin-down power: 1.2 x 1035 erg/s


Pulsar J1649-3012

J1649 J1649
Volunteers (Country):
Giper (Russia) and ATLAS AEI Hannover (Germany)

Date:
21 Mar 2019

Survey:
FGRP5

Selected pulsar parameters:
Right ascension: 16:49
Declination: -30:12
Spin frequency: 292.02 Hz
First frequency derivate: -1.13 x 10-15 Hz/s
Characteristic age: 4.1 Gyrs
Spin-down power: 1.3 x 1034 erg/s


Pulsar J1736-3422

J1736 J1736
Volunteers (Country):
ATLAS AEI Hannover (Germany)

Date:
25 Aug 2020

Survey:
FGRP5

Selected pulsar parameters:
Right ascension: 17:36
Declination: -34:22
Spin frequency: 2.88 Hz
First frequency derivate: -5.44 x 10-13 Hz/s
Characteristic age: 84 kyrs
Spin-down power: 6.2 x 1034 erg/s


Pulsar J1742-3321

J1742 J1742
Volunteers (Country):
halfmoon (China) and ATLAS AEI Hannover (Germany)

Date:
17 Dec 2017

Survey:
FGRP5

Selected pulsar parameters:
Right ascension: 17:42
Declination: -33:21
Spin frequency: 6.98 Hz
First frequency derivate: -6.18 x 10-14 Hz/s
Characteristic age: 1.8 Myrs
Spin-down power: 7.3 x 1034 erg/s


Pulsar J1748-2815

J1748 J1748
Volunteers (Country):
Syracuse University (USA) and MiguelAngel (Spain)

Date:
18 Jul 2018

Survey:
FGRP5

Selected pulsar parameters:
Right ascension: 17:48
Declination: -28:15
Spin frequency: 9.98 Hz
First frequency derivate: -3.52 x 10-13 Hz/s
Characteristic age: 450 kyrs
Spin-down power: 1.4 x 1035 erg/s


Pulsar J2034+3632

J2034 J2034
Volunteers (Country):
Daniel (USA) and Ron (USA)

Date:
18 Dec 2020

Survey:
FGRP5

Selected pulsar parameters:
Right ascension: 20:34
Declination: -36:32
Spin frequency: 273.95 Hz
First frequency derivate: -1.29 x 10-16 Hz/s
Characteristic age: 34 Gyrs
Spin-down power: 1.4 x 1033 erg/s


FGRP4 Discoveries

Pulsar J0002+6216

J0002 J0002
Volunteers (Country):
James Drews, UW-Madison (USA) and Ralph Elwell (USA)

Date:
31 Dec 2014

Survey:
FGRP4

Selected pulsar parameters:
Right ascension: 00:02.58.17(2)
Declination: +62:16:09.4(1)
Spin frequency: 8.67 Hz
First frequency derivate: -4.48 x 10-13 Hz/s
Characteristic age: 306.3 kyrs
Spin-down power: 1.5 x 1035 erg/s


Pulsar J0359+5414

J0359 J0359
Volunteers (Country):
Whelton A. Miller III (USA), ATLAS AEI Hannover (Germany) and Philip Horney (USA)

Date:
15 Dec 2014

Survey:
FGRP4

Selected pulsar parameters:
Right ascension: 03:59:26.01(2)
Declination: +54:14:55.7(3)
Spin frequency: 12.59 Hz
First frequency derivate: -2.65 x 10-12 Hz/s
Characteristic age: 75.2 kyrs
Spin-down power: 1.3 x 1036 erg/s


Pulsar J0631+0646

J0631 J0631
Volunteers (Country):
Katagiri, Atsushi (Japan) and Nicholas Huwar

Date:
20 Jan 2015

Survey:
FGRP4

Selected pulsar parameters:
Right ascension: 06:31:52.38(2)
Declination: +06:46:14.2(7)
Spin frequency: 9.01 Hz
First frequency derivate: -2.94 x 10-13 Hz/s
Characteristic age: 486.1 kyrs
Spin-down power: 1.0 x 1035 erg/s


Pulsar J1035-6720

J1035 J1035
Volunteers (Country):
ATLAS AEI Hannover (Germany), Kurt Kovacs (USA), WSyS

Date:
09 Dec 2014

Survey:
FGRP4

Selected pulsar parameters:
Right ascension: 10:35:27.487(1)
Declination: -67:20:12.692(6)
Spin frequency: 348.19 Hz
First frequency derivate: -5.63 x 10-15 Hz/s
Characteristic age: 1.0 Gyrs
Spin-down power: 7.5 x 1034 erg/s


Pulsar J1057-5851

J1057 J1057
Volunteers (Country):
Syracuse University HTC Campus Grid (USA) and Igor Yakushin, LIGO Laboratory (USA)

Date:
28 Oct 2014

Survey:
FGRP4

Selected pulsar parameters:
Right ascension: 10:57:09.5(2)
Declination: -58:51:07(2)
Spin frequency: 1.61 Hz
First frequency derivate: -2.61 x 10-13 Hz/s
Characteristic age: 97.7 kyrs
Spin-down power: 1.7 x 1034 erg/s


Pulsar J1105-6037

J1105 J1105
Volunteers (Country):
ATLAS AEI Hannover (Germany) and Syracuse University HTC Campus Grid (USA)

Date:
03 Oct 2014

Survey:
FGRP4

Selected pulsar parameters:
Right ascension: 11:05:00.48(4)
Declination: -60:37:16.3(3)
Spin frequency: 5.13 Hz
First frequency derivate: -5.75 x 10-13 Hz/s
Characteristic age: 141.4 kyrs
Spin-down power: 1.2 x 1035 erg/s


Pulsar J1208-6238

J1208 J1208
Volunteers (Country):
James Drews, UW-Madison (USA) and University of Houston, IT High Performance Computing (USA)

Date:
03 Oct 2014

Survey:
FGRP4

Selected pulsar parameters:
Right ascension: 12:08:13.96(6)
Declination: -62:38:02.3(4)
Spin frequency: 2.27 Hz
First frequency derivate: -1.68 x 10-11 Hz/s
Characteristic age: 2,700 yrs
Spin-down power: 1.5 x 1036 erg/s


Pulsar J1350-6225

J1350 J1350
Volunteers (Country):
Petr Ruzicka (Czech Republic) and Bryden Kanngiesser (Canada)

Date:
19 Jun 2015

Survey:
FGRP4

Selected pulsar parameters:
Right ascension: 13:50:44.45(1)
Declination: -62:25:43.8(1)
Spin frequency: 7.24 Hz
First frequency derivate: -4.65 x 10-13 Hz/s
Characteristic age: 246.4 kyrs
Spin-down power: 1.3 x 1035 erg/s


Pulsar J1528-5838

J1528 J1528
Volunteers (Country):
fred c (USA) and Gabriel Vasquez (USA)

Date:
25 Mar 2015

Survey:
FGRP4

Selected pulsar parameters:
Right ascension: 15:28:24.3(1)
Declination: -58:38:01(1)
Spin frequency: 2.81 Hz
First frequency derivate: -1.96 x 10-13 Hz/s
Characteristic age: 227.6 kyrs
Spin-down power: 2.2 x 1034 erg/s


Pulsar J1623-5005

J1623 J1623
Volunteers (Country):
Lars Bollwinkel (Germany) and Greg Dorais (USA)

Date:
04 Oct 2014

Survey:
FGRP4

Selected pulsar parameters:
Right ascension: 16:23:04.11(1)
Declination: -50:05:15.1(2)
Spin frequency: 11.75 Hz
First frequency derivate: -5.75 x 10-13 Hz/s
Characteristic age: 323.9 kyrs
Spin-down power: 2.7 x 1035 erg/s


Pulsar J1624-4041

J1624 J1624
Volunteers (Country):
Xio and Hung Tran (USA)

Date:
20 Dec 2014

Survey:
FGRP4

Selected pulsar parameters:
Right ascension: 16:24:09.927(9)
Declination: -40:41:29.7(3)
Spin frequency: 5.96 Hz
First frequency derivate: -1.68 x 10-13 Hz/s
Characteristic age: 562.9 kyrs
Spin-down power: 3.9 x 1034 erg/s


Pulsar J1641-5317

J1641 J1641
Volunteers (Country):
James Drews, UW-Madison (USA) and ATLAS AEI Hannover (Germany)

Date:
30 Dec 2015

Survey:
FGRP4

Selected pulsar parameters:
Right ascension: 16:41:15.91(6)
Declination: -53:17:48.8(9)
Spin frequency: 5.71 Hz
First frequency derivate: -1.21 x 10-13 Hz/s
Characteristic age: 750 kyrs
Spin-down power: 2.7 x 1034 erg/s


Pulsar J1650-4601

J1650 J1650
Volunteers (Country):
Syracuse University HTC Campus Grid (USA) and Eric Schwartz (USA)

Date:
17 Oct 2014

Survey:
FGRP4

Selected pulsar parameters:
Right ascension: 16:50:18.62(2)
Declination: -46:01:18.6(4)
Spin frequency: 7.87 Hz
First frequency derivate: -9.37 x 10-13 Hz/s
Characteristic age: 133.0 kyrs
Spin-down power: 2.9 x 1035 erg/s


Pulsar J1744-7619

J1744 J1744
Volunteers (Country):
Darrell Hoberer (USA), ATLAS AEI Hannover (Germany), Igor Yakushin, LIGO Laboratory (USA), and Keith Pickstone (UK)

Date:
07 Dec 2014

Survey:
FGRP4

Selected pulsar parameters:
Right ascension: 17:44:00.488(2)
Declination: -76:19:14.710(9)
Spin frequency: 213.33 Hz
First frequency derivate: -4.41 x 10-16 Hz/s
Characteristic age: 7.7 Gyrs
Spin-down power: 3.7 x 1033 erg/s


Pulsar J1817-1742

J1817 J1817
Volunteers (Country):
Dave Billenness (Canada) and Jonathan L. Kerfoot (USA)

Date:
24 Dec 2015

Survey:
FGRP4

Selected pulsar parameters:
Right ascension: 18:17:09.034(5)
Declination: -17:42:01.1(6)
Spin frequency: 6.68 Hz
First frequency derivate: -9.18 x 10-13 Hz/s
Characteristic age: 115 kyrs
Spin-down power: 2.42 x 1035 erg/s


Pulsar J1827-1446

J1827 J1827
Volunteers (Country):
ATLAS AEI Hannover (Germany) and Igor Yakushin, LIGO Laboratory (USA)

Date:
19 Dec 2014

Survey:
FGRP4

Selected pulsar parameters:
Right ascension: 18:27:24.60(5)
Declination: -14:46:28(4)
Spin frequency: 2.00 Hz
First frequency derivate: -1.82 x 10-13 Hz/s
Characteristic age: 174.5 kyrs
Spin-down power: 1.4 x 1034 erg/s


Pulsar J1844-0346

J1844 J1844
Volunteers (Country):
Aurélien FAUCHEUX (France) and Roger Gulbranson (USA)

Date:
18 Nov 2014

Survey:
FGRP4

Selected pulsar parameters:
Right ascension: 18:44:32.89(2)
Declination: -03:46:30.6(9)
Spin frequency: 8.86 Hz
First frequency derivate: -1.21 x 10-11 Hz/s
Characteristic age: 11.6 kyrs
Spin-down power: 4.2 x 1036 erg/s


Pulsar J1906+0722

J1906 J1906
Volunteers (Country):
Connor Barry (USA) and Richard Johnson (USA)

Date:
11 Sep 2014

Survey:
FGRP4

Selected pulsar parameters:
Right ascension: 19:06:31.20(1)
Declination: +07:22:55.8(4)
Spin frequency: 8.97 Hz
First frequency derivate: -2.88 x 10-12 Hz/s
Characteristic age: 49.2 kyrs
Spin-down power: 1.02 x 1036 erg/s


Pulsar J2017+3625

J2017 J2017
Volunteers (Country):
Kurt Gramoll (USA) and Michael Brandau (Germany)

Date:
09 Sep 2014

Survey:
FGRP4

Selected pulsar parameters:
Right ascension: 20:17:55.84(1)
Declination: +36:25:07.9(2)
Spin frequency: 6.00 Hz
First frequency derivate: -4.89 x 10-14 Hz/s
Characteristic age: 1942.8 kyrs
Spin-down power: 1.2 x 1034 erg/s


FGRP1 Discoveries

Pulsar J0554+3107

J0554 J0554
Volunteers (Country):
David Z (Canada) and Test (France)

Date:
06 Jan 2012

Survey:
FGRP1

Selected pulsar parameters:
Right ascension: 05:54:05.01(3)
Declination: +31:07:41(4)
Spin frequency: 2.15 Hz
First frequency derivate: -0.66 x 10-12 Hz/s
Characteristic age: 51.7 kyrs
Spin-down power: 5.6 x 1034 erg/s


Pulsar J1422-6138

J1422 J1422
Volunteers (Country):
Mak-ino (Japan) and Thomas M. Jackson (USA)

Date:
14 Dec 2011

Survey:
FGRP1

Selected pulsar parameters:
Right ascension: 14:22:27.07(1)
Declination: -61:38:28(1)
Spin frequency: 2.93 Hz
First frequency derivate: -0.83 x 10-12 Hz/s
Characteristic age: 55.8 kyrs
Spin-down power: 9.6 x 1034 erg/s


Pulsar J1522-5735

J1522 J1522
Volunteers (Country):
The NEMO computing cluster (USA) and Chen (USA)

Date:
30 Sep 2011

Survey:
FGRP1

Selected pulsar parameters:
Right ascension: 15:22:05.3(1)
Declination: -57:35:00(1)
Spin frequency: 9.79 Hz
First frequency derivate: -2.99 x 10-12 Hz/s
Characteristic age: 51.8 kyrs
Spin-down power: 115.7 x 1034 erg/s


Pulsar J1932+1916

J1932 J1932
Volunteers (Country):
Doug Lean (Australia) and Hans-Peter Tobler (Germany)

Date:
19 Sep 2011

Survey:
FGRP1

Selected pulsar parameters:
Right ascension: 19:32:19.70(4)
Declination: +19:16:39(1)
Spin frequency: 4.80 Hz
First frequency derivate: -2.15 x 10-12 Hz/s
Characteristic age: 35.4 kyrs
Spin-down power: 40.7 x 1034 erg/s



Einstein@Home
Lars Nieder (Last Update: Jun 14, 2021)