X-ray source variability study of the M 31 central field using Chandra HRC-I
X-ray source variability study of the M 31 central field using Chandra HRC-I
复制标题
使用 Chandra HRC-I 对 M 31 中心场进行 X 射线源变异性研究
DOI：
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
D. Hatzidimitriou
中科院分区：
文献类型：
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作者：
F. Hofmann;W. Pietsch;M. Henze;F. Haberl;R. Sturm;M. Valle;D. Hartmann;D. Hatzidimitriou
仙女座星系（M 31）的中心场已被监测，从2006年到2012年使用钱德拉HRC-I探测器（约0.1-10 keV能量范围），主要目的是探测光学新星的X射线。我们提出了一个系统的分析，所有的X射线源中发现的41颗新星监测观测，沿着与23 M 31中心场HRC-I观测可从钱德拉数据档案在1999年12月开始。在此基础上，我们研究了M31中源群特别是X射线双星的X射线长期变率。我们创建了一个目录的源，检测到的64个可用的观测，这加起来的总曝光量约为1 Ms。我们提出了一个点源目录，包含318个X射线源的详细的长期变化信息，其中28个是首次公布。该目录的空间和时间分辨率使我们能够对115个X射线二进制候选者进行分类，这些候选者显示出高的X射线变异性，甚至爆发，此外还有14个球状星团X射线二进制候选者没有显着的变异性。分析可能表明，球状星团中爆发源的频率低于M31。我们探测到了7个超新星遗迹，其中一个是新的候选者，另外还解析了来自已知射电超新星遗迹的第一批X射线。除了33个已知的光学新星/X射线源相关外，我们还发现了一个以前未知的超软X射线爆发和几个新的新星候选者。该星表包含了M31中心区域详细的长期X射线光变曲线的大量样本，这有助于了解我们邻近的螺旋星系M31的X射线种群。
[Abridged] The central field of the Andromeda galaxy (M 31) has been monitored, using the Chandra HRC-I detector (about 0.1-10 keV energy range) from 2006 to 2012 with the main aim to detect X-rays from optical novae. We present a systematic analysis of all X-ray sources found in the 41 nova monitoring observations, along with 23 M 31 central field HRC-I observations available from the Chandra data archive starting in December 1999. Based on these observations, we studied the X-ray long-term variability of the source population and especially of X-ray binaries in M 31. We created a catalogue of sources, detected in the 64 available observations, which add up to a total exposure of about 1 Ms. We present a point-source catalogue, containing 318 X-ray sources with detailed long-term variability information, 28 of which are published for the first time. The spatial and temporal resolution of the catalogue allows us to classify 115 X-ray binary candidates showing high X-ray variability or even outbursts in addition to 14 globular cluster X-ray binary candidates showing no significant variability. The analysis may suggest, that outburst sources are less frequent in globular clusters than in the field of M 31. We detected 7 supernova remnants, one of which is a new candidate and in addition resolved the first X-rays from a known radio supernova remnant. Besides 33 known optical nova/X-ray source correlations, we also discovered one previously unknown super-soft X-ray outburst and several new nova candidates. The catalogue contains a large sample of detailed long-term X-ray light curves in the M 31 central field, which helps to understand the X-ray population of our neighbouring spiral galaxy M 31.
XMM-Newton M 31 大型巡天中发现的超新星遗迹和候选者
影响因子：
6.5
作者：
Sasaki;Pietsch;Haberl;Hatzidimitriou;Stiele;Williams
通讯作者：
Williams