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Title: The bright unidentified γ-ray source 1FGL J1227.9–4852: Can it be associated with a low-mass X-ray binary? [The bright unidentified γ-ray source 1FGL J1227.9–4852: Can it be associated with an LMXB?]

Journal Article · · Monthly Notices of the Royal Astronomical Society
 [1];  [2];  [3];  [4];  [5];  [6];  [1];  [7];  [8];  [6];  [3];  [9];  [10]
  1. Univ. Joseph Fourier Grenoble I/CNRS, Grenoble (France)
  2. Univ. Joseph Fourier Grenoble I/CNRS, Grenoble (France); Jagiellonian Univ., Krakow (Poland)
  3. Univ. Paris 7 Denis Diderot and Service d'Astrophysique, Gif sure Yvette (France)
  4. Columbia Univ., New York, NY (United States)
  5. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Univ. of Maryland Baltimore County (UMBC), Baltimore, MD (United States)
  6. Stanford Univ., Stanford, CA (United States)
  7. CSIRO Astronomy and Space Science, Epping, NSW (Australia)
  8. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  9. Jagiellonian Univ., Krakow (Poland)
  10. Jagiellonian Univ., Krakow (Poland); Institute of Space and Astronautical Science, Kanagawa (Japan)

We present an analysis of high energy (HE; 0.1–300 GeV) γ-ray observations of 1FGL J1227.9–4852 with the Fermi Gamma-ray Space Telescope, follow-up radio observations with the Australia Telescope Compact Array, Giant Metrewave Radio Telescope and Parkes radio telescopes of the same field and follow-up optical observations with the ESO VLT. We also examine archival XMMNewton and INTEGRAL X-ray observations of the region around this source. The γ-ray spectrum of 1FGL J1227.9–4852 is best fitted with an exponentially cut-off power law, reminiscent of the population of pulsars observed by Fermi. A previously unknown, compact radio source within the 99.7 per cent error circle of 1FGL J1227.9–4852 is discovered and has a morphology consistent either with an AGN core/jet structure or with two roughly symmetric lobes of a distant radio galaxy. A single bright X-ray source XSS J12270–4859, a low-mass X-ray binary, also lies within the 1FGL J1227.9–4852 error circle and we report the first detection of radio emission from this source. The potential association of 1FGL J1227.9–4852 with each of these counterparts is discussed. Based upon the available data we find the association of the γ-ray source to the compact double radio source unlikely and suggest that XSS J12270–4859 is a more likely counterpart to the new HE source. As a result, we propose that XSS J12270–4859 may be a millisecond binary pulsar and draw comparisons with PSR J1023+0038.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1357228
Journal Information:
Monthly Notices of the Royal Astronomical Society, Vol. 415, Issue 1; ISSN 0035-8711
Publisher:
Royal Astronomical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 54 works
Citation information provided by
Web of Science

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Cited By (27)

Gamma-ray binaries and related systems journal August 2013
X-ray follow-ups of XSS J12270-4859: a low-mass X-ray binary with gamma-ray Fermi -LAT association journal January 2013
Different twins in the millisecond pulsar recycling scenario: Optical polarimetry of PSR J1023+0038 and XSS J12270-4859 journal June 2016
X-Ray States of Redback Millisecond Pulsars journal October 2014
A Propeller Model for the Sub-Luminous State of the Transitional Millisecond Pulsar psr J1023+0038 journal June 2015
A propeller scenario for the gamma-ray emission of low-mass X-ray binaries: the case of XSS J12270−4859 journal December 2013
A state change in the low-mass X-ray binary XSS J12270−4859 journal May 2014
Deep radio imaging of 47 Tuc identifies the peculiar X-ray source X9 as a new black hole candidate journal September 2015
SAX J1808.4−3658, an accreting millisecond pulsar shining in gamma rays? journal December 2015
Mid-UV studies of the transitional millisecond pulsars XSS J12270−4859 and PSR J1023+0038 during their radio pulsar states★ journal February 2018
Quasi-simultaneous radio and X-ray observations of Aql X-1 : probing low luminosities journal December 2019
Radio and X-ray monitoring of the accreting millisecond X-ray pulsar IGR J17591−2342 in outburst journal December 2019
The Bursting Pulsar GRO J1744−28: the slowest transitional pulsar? journal April 2018
The MAVERIC Survey: A Red Straggler Binary with an Invisible Companion in the Galactic Globular Cluster M10 journal March 2018
Simultaneous Chandra and VLA Observations of the Transitional Millisecond Pulsar PSR J1023+0038: Anti-correlated X-Ray and Radio Variability journal March 2018
A Multiwavelength View of the Neutron Star Binary 1FGL J1417.7–4402: A Progenitor to Canonical Millisecond Pulsars journal October 2018
Optical Spectroscopy and Demographics of Redback Millisecond Pulsar Binaries journal February 2019
Observations of the Ultra-compact X-Ray Binary 4U 1543-624 in Outburst with NICER, INTEGRAL, Swift , and ATCA journal September 2019
A state change in the low-mass X-ray binary XSS J12270-4859 text January 2014
X-ray states of redback millisecond pulsars text January 2014
Discovery of PSR J1227-4853: A transition from a low-mass X-ray binary to a redback millisecond pulsar text January 2014
Deep radio imaging of 47 Tuc identifies the peculiar X-ray source X9 as a new black hole candidate text January 2015
Different twins in the millisecond pulsar recycling scenario: optical polarimetry of PSR J1023+0038 and XSS J12270-4859 text January 2016
Mid-UV Studies of the Transitional Millisecond Pulsars XSS J12270-4859 and PSR J1023+0038 During Their Radio Pulsar States text January 2017
The Maveric Survey: a Red Straggler Binary with an Invisible Companion in the Galactic Globular Cluster M10 text January 2018
A multi-wavelength view of the neutron star binary 1FGL J1417.7--4402: A progenitor to canonical millisecond pulsars text January 2018
Optical spectroscopy and demographics of redback millisecond pulsar binaries text January 2018