利用钱德拉X射线天文台解析大麦哲伦星系X-1中的SNR 0540-6944。

Resolving SNR 0540-6944 from LMC X-1 with Chandra.

作者信息

Williams RM, Petre R, Chu YH, Chen C

出版信息

Astrophys J. 2000 Jun 10;536(1):L27-L30. doi: 10.1086/312729.

Abstract

We examine the supernova remnant SNR 0540-697 in the Large Magellanic Cloud (LMC) using data from the Chandra Advanced CCD Imaging Spectrometer. The X-ray emission from this supernova remnant (SNR) had previously been hidden in the bright emission of the nearby X-ray binary LMC X-1; however, new observations with Chandra can finally reveal the SNR's structure and spectrum. We find the SNR to be a thick-shelled structure about 19 pc in diameter, with a brightened northeast region. Spectral results suggest a temperature of 0.31 keV and an X-ray luminosity (0.3-3.0 keV) of 8.4x1033 ergs s(-1). We estimate an age of 12,000-20,000 yr for this SNR, but note that this estimate does not take into account the possibility of cavity expansion or other environmental effects.

摘要

我们利用钱德拉高级电荷耦合器件成像光谱仪的数据，对大麦哲伦星系（LMC）中的超新星遗迹SNR 0540 - 697进行了研究。此前，这个超新星遗迹（SNR）的X射线辐射一直隐藏在附近X射线双星LMC X - 1的明亮辐射中；然而，钱德拉的新观测终于能够揭示该SNR的结构和光谱。我们发现这个SNR是一个直径约19秒差距的厚壳结构，其东北部区域亮度增强。光谱结果显示温度为0.31千电子伏特，X射线光度（0.3 - 3.0千电子伏特）为8.4×10³³尔格/秒。我们估计这个SNR的年龄为12000 - 20000年，但需要注意的是，这个估计没有考虑到空腔膨胀或其他环境影响的可能性。