A Chandra Observation of GRO J1744-28: The Bursting Pulsar in Quiescence

Rudy Adam Dirk Wijnands, QD Wang

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

We present a Chandra/Advanced CCD Imaging Spectrometer I-array observation of GRO J1744-28. We detected a source at a position of R.A. = 17(h)44(m)33.(s)09, decl. = -28degrees44'27."0 (J2000.0; with a 1 sigma error of`similar to0".8), consistent with both ROSAT and interplanetary network localizations of GRO J1744-28 when it was in outburst. This makes it likely that we have detected the quiescent X-ray counterpart of GRO J1744-28. Our Chandra position demonstrates that the previously proposed infrared counterpart is not related to GRO J1744-28. The 0.5-10 keV luminosity of the source is (2-4) x 10(33) ergs s(-1) (assuming the source is near the Galactic center at a distance of 8 kpc). We discuss our results in the context of the quiescent X-ray emission of pulsating and nonpulsating neutron star X-ray transients.

Original languageEnglish
Pages (from-to)pp.L93-L96.
Number of pages4
JournalAstrophysical Journal
Volume568
Issue number2
Publication statusPublished - 1 Apr 2002

Keywords

  • pulsars : individual (GRO J1744-28)
  • stars : neutron
  • X-rays : stars
  • X-RAY TRANSIENTS
  • ASCA OBSERVATIONS
  • RAPID BURSTER
  • LUMINOSITY
  • PULSATIONS
  • OUTBURST

Fingerprint

Dive into the research topics of 'A Chandra Observation of GRO J1744-28: The Bursting Pulsar in Quiescence'. Together they form a unique fingerprint.

Cite this