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

Sangwook Park, Svetozar A. Zhekov, David N. Burrows, Gordon P. Garmire, Dick McCray

Research output: Contribution to journalArticle

10 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)991-995
Number of pages5
JournalAdvances in Space Research
Volume35
Issue number6
DOIs
StatePublished - Jan 1 2005

Fingerprint

Observatories
supernova remnants
observatories
observatory
X rays
x rays
erg
Fluxes
rings
Electron temperature
flux (rate)
point sources
point source
density distribution
Luminance
shock
luminosity
Supernovae
electron energy
electron

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences(all)

Cite this

Park, Sangwook ; Zhekov, Svetozar A. ; Burrows, David N. ; Garmire, Gordon P. ; McCray, Dick. / Supernova remnant 1987A : The latest report from the Chandra X-ray Observatory. In: Advances in Space Research. 2005 ; Vol. 35, No. 6. pp. 991-995.
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Supernova remnant 1987A : The latest report from the Chandra X-ray Observatory. / Park, Sangwook; Zhekov, Svetozar A.; Burrows, David N.; Garmire, Gordon P.; McCray, Dick.

In: Advances in Space Research, Vol. 35, No. 6, 01.01.2005, p. 991-995.

Research output: Contribution to journalArticle

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AU - Zhekov, Svetozar A.

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AB - 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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