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

doi:10.1016/j.asr.2005.01.075

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

Astronomy & Astrophysics

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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 language	English (US)
Pages (from-to)	991-995
Number of pages	5
Journal	Advances in Space Research
Volume	35
Issue number	6
DOIs	https://doi.org/10.1016/j.asr.2005.01.075
State	Published - 2005

All Science Journal Classification (ASJC) codes

Aerospace Engineering
Astronomy and Astrophysics
Geophysics
Atmospheric Science
Space and Planetary Science
General Earth and Planetary Sciences

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10.1016/j.asr.2005.01.075

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title = "Supernova remnant 1987A: The latest report from the Chandra X-ray Observatory",

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.",

author = "Sangwook Park and Zhekov, {Svetozar A.} and Burrows, {David N.} and Garmire, {Gordon P.} and Dick McCray",

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doi = "10.1016/j.asr.2005.01.075",

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journal = "Advances in Space Research",

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T1 - Supernova remnant 1987A

T2 - The latest report from the Chandra X-ray Observatory

AU - Park, Sangwook

AU - Zhekov, Svetozar A.

AU - Burrows, David N.

AU - Garmire, Gordon P.

AU - McCray, Dick

PY - 2005

Y1 - 2005

N2 - 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.

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

Abstract

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