X{ray emission from the giant molecular clouds in the Galactic Center region and the discovery of new X{ray sources
X{ray emission from the giant molecular clouds in the Galactic Center region and the discovery of new X{ray sources
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银河中心区域巨型分子云的X{射线发射和新X{射线源的发现
DOI：
10.1051/0004-6361:20010503
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发表时间：
2001
影响因子：
6.5
通讯作者：
Padova
中科院分区：
文献类型：
--
作者：
L. Sidoli;S. Mereghetti;A. Treves;A. Parmar;R. Turolla;F. F. S. Noordwijk;Istituto di Fisica CosmicaG.Occhialini;Milano;Universita' dell'Insubria;Como;U. Padova;D. Fisica;Padova
本文报道了对银河系中心区巨型分子云SgrB、SgrC和SgrD的X射线(2{10keV)观测结果，并发现了类点源SAX J1748.2{2808。这些数据是通过BeppoSAX卫星上的MECS仪器获得的。SGRB2的X射线光度为6×10~(34)尔格·S~1，其光谱特征是在6.5keV处有一条强的Fe发射线，其等效宽度为2keV。从SGR C和SNR G1.05{0.15(SGR D)探测到微弱的二极管X射线发射。在SgrD区发现了一个新的、具有强Fe谱线的未分辨源。这个源，SAX J1748.2{2808，可能与银河系中心距离的一个SiO和OH脉泽源有关。如果是这样的话，它的光度是10 34尔格S 1。我们认为SAX J1748.2{2808的X射线辐射要么是由原恒星产生的，要么是由一个巨型分子云核产生的。来自类似SAX J1748.2{2808的源的排放可能会对观测到的银河脊铁谱线排放的预期贡献产生影响。
We report the results of X{ray (2{10 keV) observations of the giant molecular clouds Sgr B, Sgr C and Sgr D in the Galactic Center region, together with the discovery of the point-like source SAX J1748.2{2808. The data have been obtained with the MECS instrument on the BeppoSAX satellite. The core of Sgr B2 has an X{ray luminosity of6 10 34 erg s 1 and its spectrum is characterized by a strong Fe emission line at6.5 keV with an equivalent width of 2 keV. Faint diuse X{ray emission is detected from Sgr C and from the SNR G1.05{0.15 (Sgr D). A new, unresolved source with a strong Fe line has been discovered in the Sgr D region. This source, SAX J1748.2{2808, is probably associated with a SiO and OH maser source at the Galactic Center distance. If so, its luminosity is 10 34 erg s 1 . We propose that the X{ray emission from SAX J1748.2{2808 is produced either by protostars or by a giant molecular cloud core. Emission from sources similar to SAX J1748.2{2808 could have an impact on the expected contribution on the observed Fe line emission from the Galactic ridge.
来自 O/I 类原恒星的 X 射线
DOI：
--
发表时间：
2004
期刊：
proceedings of IAU symposium "Star Formation at High Angular Resolution" 221
影响因子：
--
作者：
Tsuboi;Y.
通讯作者：
Y.