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Title: EINSTEIN@HOME DISCOVERY OF FOUR YOUNG GAMMA-RAY PULSARS IN FERMI LAT DATA

We report the discovery of four gamma-ray pulsars, detected in computing-intensive blind searches of data from the Fermi Large Area Telescope (LAT). The pulsars were found using a novel search approach, combining volunteer distributed computing via Einstein@Home and methods originally developed in gravitational-wave astronomy. The pulsars PSRs J0554+3107, J1422–6138, J1522–5735, and J1932+1916 are young and energetic, with characteristic ages between 35 and 56 kyr and spin-down powers in the range 6 × 10{sup 34}—10{sup 36} erg s{sup –1}. They are located in the Galactic plane and have rotation rates of less than 10 Hz, among which the 2.1 Hz spin frequency of PSR J0554+3107 is the slowest of any known gamma-ray pulsar. For two of the new pulsars, we find supernova remnants coincident on the sky and discuss the plausibility of such associations. Deep radio follow-up observations found no pulsations, suggesting that all four pulsars are radio-quiet as viewed from Earth. These discoveries, the first gamma-ray pulsars found by volunteer computing, motivate continued blind pulsar searches of the many other unidentified LAT gamma-ray sources.
Authors:
; ; ; ; ; ; ;  [1] ; ; ; ; ;  [2] ;  [3] ; ;  [4] ;  [5] ;  [6]
  1. Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut), D-30167 Hannover (Germany)
  2. Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn (Germany)
  3. Space Sciences Laboratory, University of California, Berkeley, CA 94720 (United States)
  4. Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, WI 53201 (United States)
  5. CSIRO Astronomy and Space Science, Australia Telescope National Facility (Australia)
  6. Space Science Division, Naval Research Laboratory, Washington, DC 20375-5352 (United States)
Publication Date:
OSTI Identifier:
22364093
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 779; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTRONOMY; ASTROPHYSICS; COSMIC GAMMA SOURCES; COSMIC PHOTONS; GAMMA RADIATION; GRAVITATIONAL WAVES; MILKY WAY; PULSARS; PULSATIONS; ROTATION; SPIN; STARS; SUPERNOVA REMNANTS; TELESCOPES