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Pulsed Gamma Rays From The Original Millisecond And Black Widow Pulsars: A Case For Caustic Radio Emission?

Journal Article · · The Astrophysical Journal
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  1. Max Planck Inst. for Radioastronomy, Bonn (Germany)
  2. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Univ. of Maryland, College Park, MD (United States); National Academy of Sciences, Washington, DC (United States); Naval Research Lab. (NRL), Washington, DC (United States)
  3. North-West Univ., Potchefstroom (South Africa)
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  5. CNRS, Toulouse Cedex (France); Univ. of Toulouse (France)
  6. McGill Univ., Montreal, QC (Canada)
  7. Univ. of Manchester (United Kingdom)
  8. Lab. de Physique et Chimie de l'Environnement (LPCE), Orleans (France); CNRS (France). Observatoire de Paris
  9. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  10. Columbia Univ., New York, NY (United States). Columbia Astrophysics Lab.
  11. Istituto Nazionale di Fisica Nucleare (INFN), Bari (Italy)
  12. Naval Research Lab. (NRL), Washington, DC (United States)
  13. Australia Telescope National Facility, Epping, NSW (Australia)
  14. Naval Research Lab. (NRL), Washington, DC (United States); George Mason Univ., Fairfax, VA (United States)
  15. National Radio Astronomy Observatory (NRAO), Charlottesville, VA (United States)
  16. Univ. Bordeaux (France)
  17. Willamette Univ., Salem, OR (United States)
+ Show Author Affiliations
We report the detection of pulsed gamma-ray emission from the fast millisecond pulsars (MSPs) B1937+21 (also known as J1939+2134) and B1957+20 (J1959+2048) using 18 months of survey data recorded by the Fermi Large Area Telescope (LAT) and timing solutions based on radio observations conducted at the Westerbork and Nancay radio telescopes. In addition, we analyzed archival RXTE and XMM-Newton X-ray data for the two MSPs, con rming the X-ray emission properties of PSR B1937+21 and nding evidence (~ 4σ) for pulsed emission from PSR B1957+20 for the rst time. In both cases the gamma-ray emission pro le is characterized by two peaks separated by half a rotation and are in close alignment with components observed in radio and X-rays. These two pulsars join PSRs J0034-0534 and J2214+3000 to form an emerging class of gamma-ray MSPs with phase-aligned peaks in different energy bands. The modeling of the radio and gamma-ray emission pro les suggests co-located emission regions in the outer magnetosphere.
Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1356769
Alternate ID(s):
OSTI ID: 22004348
Journal Information:
The Astrophysical Journal, Journal Name: The Astrophysical Journal Journal Issue: 1 Vol. 744; ISSN 0004-637X
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (18)

X-ray studies of the black widow pulsar PSR B1957+20 journal August 2012
X-Ray Studies of the Black Widow Pulsar psr B1957+20 journal November 2012
SEARCH FOR GAMMA-RAY EMISSION FROM FOUR ACCRETING MILLISECOND PULSARS WITH FERMI /LAT journal May 2013
Optimized Blind Gamma-Ray Pulsar Searches at Fixed Computing Budget journal October 2014
A study of multifrequency polarization pulse profiles of millisecond pulsars journal April 2015
Observation of the black widow B1957+20 millisecond pulsar binary system with the MAGIC telescopes journal June 2017
Pulsars and gravity journal April 2015
Pulsars and Gravity journal January 2006
Detection and Timing of Gamma-Ray Pulsations from the 707 Hz Pulsar J0952-0607 other January 2019
Observation of the Black Widow B1957+20 millisecond pulsar binary system with the MAGIC telescopes text January 2017
The Einstein@Home Gamma-Ray Pulsar Survey. i. Search Methods, Sensitivity, and Discovery of new Young Gamma-Ray Pulsars journal January 2017
The Einstein@Home Gamma-ray Pulsar Survey. II. Source Selection, Spectral Analysis, and Multiwavelength Follow-up journal February 2018
High-precision X-Ray Timing of Three Millisecond Pulsars with NICER : Stability Estimates and Comparison with Radio journal April 2019
Detection and Timing of Gamma-Ray Pulsations from the 707 Hz Pulsar J0952−0607 journal September 2019
X-ray studies of the Black Widow Pulsar PSR B1957+20 text January 2012
Optimized Blind Gamma-ray Pulsar Searches at Fixed Computing Budget text January 2014
The Einstein@Home Gamma-ray Pulsar Survey. I. Search Methods, Sensitivity and Discovery of New Young Gamma-ray Pulsars text January 2016
The Einstein@Home Gamma-Ray Pulsar Survey II. Source Selection, Spectral Analysis and Multi-wavelength Follow-up text January 2017

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