A remarkable recurrent nova in M 31: The X-ray observations

A remarkable recurrent nova in M 31: The X-ray observations
复制标题

M 31 中一颗引人注目的复发新星:X 射线观测

DOI:
10.1051/0004-6361/201423410
复制
发表时间:
2014
影响因子:
6.5
通讯作者:
Henze M
Henze M
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Henze M

文献摘要

参考文献

被引文献

相似文献

2013年11月下旬宣布了M31新星M31 N 2008- 12 a的另一次爆发。光学数据表明一个前所未有的短复发时间约一year.AimsIn这封信中,我们解决的X射线性质的M31 N 2008-12a.MethodsWe requestedSwift监测观测后不久,光学发现。我们估计源计数率和提取的X射线光谱从所得的数据。相应的紫外线(UV)的数据也analysed.ResultsThe新星M31 N 2008- 12 A被清楚地检测到作为一个明亮的超软X射线源(SSS)只有6天后,以及约束的光学发现。它显示了一个持续两周的短SSS阶段和一个异常热的X射线光谱,有效黑体温度约为97 eV。在SSS阶段的X射线光变曲线显示显着的变化,可能已经伴随着光谱的变化。非常早期的X射线的变化被发现是反相关的同时变化的UV flux.ConclusionsThe X射线特性的M31 N 2008- 12 A相干指向一个高质量的白色矮星的新星系统。这个物体可能是一个有希望的Ia型超新星的祖先。我们重新发现了M31 N 2008- 12 a的额外X射线探测,这与我们的数据一致,并将已知的新星爆发数量增加到7个。这颗新星是一个特殊的物体,值得在未来进一步关注。
ContextAnother outburst of the recurrent M 31 nova M31N 2008-12a was announced in late November 2013. Optical data suggest an unprecedentedly short recurrence time of approximately one year.AimsIn this Letter we address the X-ray properties of M31N 2008-12a.MethodsWe requestedSwiftmonitoring observations shortly after the optical discovery. We estimated source count rates and extracted X-ray spectra from the resulting data. The corresponding ultraviolet (UV) data were also analysed.ResultsThe nova M31N 2008-12a was clearly detected as a bright supersoft X-ray source (SSS) only six days after the well-constrained optical discovery. It displayed a short SSS phase of two weeks’ duration and an exceptionally hot X-ray spectrum with an effective black-body temperature of ~97 eV. During the SSS phase the X-ray light curve displayed significant variability that might have been accompanied by spectral variations. The very early X-ray variability was found to be anti-correlated with simultaneous variations in the UV flux.ConclusionsThe X-ray properties of M31N 2008-12a coherently point towards a high-mass white dwarf in the nova system. This object might be a promising Type Ia supernova progenitor. We rediscovered additional X-ray detections of M31N 2008-12a that are consistent with our data and increase the number of known nova outbursts to seven. This nova is an exceptional object that merits further attention in the future.
2004年7月至2005年2月对M 31光学新星的X射线监测
DOI: --
发表时间: 2006
期刊:
影响因子: --
作者:
W. Pietsch;F. Haberl;G. Sala;H. Stiele;K. Hornoch;A. Riffeser;J. Fliri;Ralf Bender;S. Buhler;V. Burwitz;Jochen Greiner;Stella Seitz
通讯作者: Stella Seitz
使用 Chandra 高分辨率相机对 M31 进行概要 X 射线研究
DOI: --
发表时间: 2003
期刊:
影响因子: --
作者:
B. Williams;Michael R. Garcia;A. Kong;F. Primini;A. King;R. Di Stefano;S. Murray
通讯作者: S. Murray
NOVA RS OPHIUCHI 2006 的超软 X 射线相
DOI: 10.1088/0004-637x/727/2/124
发表时间: 2010
期刊: The Astrophysical Journal
影响因子: --
作者:
J. Osborne;K. Page;A. Beardmore;Goad;M. Bode;Tim O'Brien;S. Starrfield;Thomas Rauch;J. Ness;J. Krautter;G. Schwarz;D. Burrows;N. Gehrels;J. Drake;A. Evans;S. Eyres
通讯作者: S. Eyres
DOI: 10.1086/508063
发表时间: 2006-07
期刊: The Astrophysical Journal Supplement Series
影响因子: --
作者:
I. Hachisu;M. Kato
通讯作者: I. Hachisu;M. Kato
DOI: --
发表时间: 1993
期刊:
影响因子: --
作者:
G. Decherney
通讯作者: G. Decherney