The 6.7-keV iron-line emission in the Galactic Centre
The 6.7-keV iron-line emission in the Galactic Centre
复制标题
银河系中心的 6.7 keV 铁线发射
DOI:
10.1088/1742-6596/54/1/018
复制
发表时间:
2006
期刊:
影响因子:
--
通讯作者:
A. Decourchelle
中科院分区:
文献类型:
--
作者:
Robert S. Warwick;M. Sakano;A. Decourchelle
We use recent XMM-Newton observations to study the ''diffuse'' X-ray emission seen in the Galactic Centre Region. Spectrally, the emission can be separated into three major components, each characterised by a prominent spectral line. Using these lines as tracers, we investigate the underlying spatial distribution of the various components. Specifbally, we find the 6.7-keV line of helium-like iron, has a relatively smooth, circularly symmetric distribution centred on Sgr A* and a surface brightness which falls off with radius as r−0.87±0.06 over the range r = 3' − 12'. This mirrors the distribution of the underlying stellar population and adds strong support to the hypothesis that the 6.7-keV line and the associated hard thermal continuum (with kT ≈ 8 keV) originates in the summed emission of faint point sources.
DOI:
10.1086/322282
发表时间:
2001-05
期刊:
The Astrophysical Journal
影响因子:
--
作者:
H. Murakami;K. Koyama;Y. Maeda
通讯作者:
H. Murakami;K. Koyama;Y. Maeda
DOI:
--
发表时间:
2005
期刊:
Astrophysical Journal 635
影响因子:
--
作者:
Ebisawa;K.;Bamba;A.et al.
通讯作者:
A.et al.