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Title: Discovery of millisecond pulsars in radio searches of southern Fermi Large Area Telescope sources

Journal Article · · Monthly Notices of the Royal Astronomical Society
 [1];  [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [8];  [9];  [10];  [10];  [3];  [11];  [12];  [13];  [12];  [14];  [3] more »;  [15];  [2] « less
  1. Australia Telescope National Facility, Epping, NSW (Australia)
  2. Naval Research Lab., Washington, D.C. (United States)
  3. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  4. Univ. of California, Santa Cruz, CA (United States)
  5. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Univ. of Maryland Baltimore County (UMBC), Baltimore, MD (United States)
  6. Univ. of California, Santa Cruz, CA (United States); INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica, Milano (Italy); Univ. di Pavia, Pavia (Italy)
  7. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Univ. of Maryland, College Park, MD (United States)
  8. National Academy of Sciences, Washington, D.C. (United States); Naval Research Lab., Washington, D.C. (United States)
  9. Columbia Univ., New York, NY (United States)
  10. Max-Planck-Institut fur Radioastronomie, Bonn (Germany)
  11. Max-Planck-Institut fur Radioastronomie, Bonn (Germany); The Univ. of Manchester, Manchester (United Kingdom)
  12. Stanford Univ., Stanford, CA (United States)
  13. National Radio Astronomy Observatory (NRAO), Charlottesville, VA (United States)
  14. Univ. Bordeaux, Gradignan (France)
  15. The Univ. of Manchester, Manchester (United Kingdom)
+ Show Author Affiliations

Using the Parkes Radio Telescope, we have carried out deep observations of 11 unassociated gamma-ray sources. Periodicity searches of these data have discovered two millisecond pulsars, PSR J1103–5403 (1FGL J1103.9–5355) and PSR J2241–5236 (1FGL J2241.9–5236), and a long-period pulsar, PSR J1604–44 (1FGL J1604.7–4443). In addition, we searched for but did not detect any radio pulsations from six gamma-ray pulsars discovered by the Fermi satellite to a level of ~0.04 mJy (for pulsars with a 10 per cent duty cycle). The timing of the millisecond pulsar PSR J1103–5403 has shown that its position is 9 arcmin from the centroid of the gamma-ray source. Since these observations were carried out, independent evidence has shown that 1FGL J1103.9–5355 is associated with the flat spectrum radio source PKS 1101–536. It appears certain that the pulsar is not associated with the gamma-ray source, despite the seemingly low probability of a chance detection of a radio millisecond pulsar. We consider that PSR J1604–44 is a chance discovery of a weak, long-period pulsar and is unlikely to be associated with 1FGL J1604.7–4443. PSR J2241–5236 has a spin period of 2.2 ms and orbits a very low mass companion with a 3.5-h orbital period. The relatively high flux density and low dispersion measure of PSR J2241–5236 make it an excellent candidate for high precision timing experiments. The gamma rays of 1FGL J2241.9–5236 have a spectrum that is well modelled by a power law with an exponential cut-off, and phase binning with the radio ephemeris results in a multipeaked gamma-ray pulse profile. Furthermore, observations with Chandra have identified a coincident X-ray source within 0.1 arcsec of the position of the pulsar obtained by radio timing.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1357255
Journal Information:
Monthly Notices of the Royal Astronomical Society, Vol. 414, Issue 2; ISSN 0035-8711
Publisher:
Royal Astronomical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 65 works
Citation information provided by
Web of Science

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Cited By (24)

Accretion, ablation and propeller evolution in close millisecond pulsar binary systems journal August 2013
The Parkes Pulsar Timing Array Project journal January 2013
X-ray follow-up observations of the two γ -ray pulsars PSR J1459–6053 and PSR J1614–2230 journal August 2012
Upgraded antennas for pulsar observations in the Argentine Institute of Radio astronomy journal January 2020
FERMI LARGE AREA TELESCOPE SECOND SOURCE CATALOG journal March 2012
THE SECOND FERMI LARGE AREA TELESCOPE CATALOG OF GAMMA-RAY PULSARS journal September 2013
MULTIBAND DIAGNOSTICS OF UNIDENTIFIED 1FGL SOURCES WITH SUZAKU AND SWIFT X-RAY OBSERVATIONS journal September 2013
A study of multifrequency polarization pulse profiles of millisecond pulsars journal April 2015
The High Time Resolution Universe Pulsar Survey — VI. An artificial neural network and timing of 75 pulsars journal December 2012
High Energy Radiation from Spider Pulsars journal December 2019
The Einstein@Home Gamma-ray Pulsar Survey. II. Source Selection, Spectral Analysis, and Multiwavelength Follow-up journal February 2018
A High Time-resolution Study of the Millisecond Pulsar J2241−5236 at Frequencies Below 300 MHz journal September 2019
Multiband Optical Light Curves of Black-widow Pulsars journal September 2019
Signatures of Intra-binary Shock Emission in the Black Widow Pulsar Binary PSR J2241−5236 journal November 2018
NICER X-Ray Observations of Seven Nearby Rotation-powered Millisecond Pulsars journal December 2019
The Second Fermi Large area Telescope Catalog of Gamma-Ray Pulsars text January 2013
The High Time Resolution Universe Survey VI: An Artificial Neural Network and Timing of 75 Pulsars text January 2012
The Parkes Pulsar Timing Array Project text January 2012
Parkes radio searches of Fermi gamma-ray sources and millisecond pulsar discoveries text January 2015
The Einstein@Home Gamma-Ray Pulsar Survey II. Source Selection, Spectral Analysis and Multi-wavelength Follow-up text January 2017
A high time resolution study of the millisecond pulsar J2241-5236 at frequencies below 300 MHz text January 2019
Multiband Optical Light Curves of Black-Widow Pulsars text January 2019
Upgraded antennas for pulsar observations in the Argentine Institute of Radio astronomy text January 2019
NICER X-ray Observations of Seven Nearby Rotation-Powered Millisecond Pulsars text January 2019

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
pulsars: general
pulsars: individual: J2241−5236