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Supernova remnant 1987A: The latest report from the Chandra X-ray Observatory

Authors
Journal
Advances in Space Research
0273-1177
Publisher
Elsevier
Publication Date
Volume
35
Issue
6
Identifiers
DOI: 10.1016/j.asr.2005.01.075
Keywords
  • Supernovae
  • General Supernovae
  • Individual (Sn 1987A) Supernova Remnants
  • X-Rays
  • General

Abstract

Abstract We continue monitoring supernova remnant (SNR) 1987A with the Chandra X-ray Observatory. As of 2004 January, bright X-ray spots in the northwest and the southwest are now evident in addition to the bright eastern ring. The overall X-ray spectrum, since 2002 December, can be described by a planar shock with an electron temperature of ∼2.1 keV. The soft X-ray flux is now 8 × 10 −13 ergs cm −2 s −1, which is about five times higher than four years ago. This flux increase rate is consistent with our prediction based on an exponential density distribution along the radius of the SNR between the HII region and the inner ring. We still have no direct evidence of a central point source, and place an upper limit of L X = 1.3 × 10 34 ergs s −1 on the 3–10 keV band X-ray luminosity.

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