Energetic contribution of X-ray binaries to diffuse X-ray emission in the Galactic center
| Project/Area Number |
24740133
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Astronomy
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| Research Institution | Nagoya University (2013-2014)
Japan Aerospace Exploration Agency (2012) |
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Principal Investigator |
MORI Hideyuki 名古屋大学, 現象解析研究センター, 助教 (20432354)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | 銀河系バルジ / 低質量X線連星系 / 銀河団 / X線星 / 未同定X線天体 / X線光度関数 / X線未同定天体 |
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| Outline of Final Research Achievements |
We constructed the luminosity function of the Low-Mass X-ray Binaries (LMXBs) in the Galactic bulge, which is a fundamental observable to elucidate the formation history of the Galaxy, using a flux-limited sample extracted from the ROSAT All-Sky Survey. In order to improve the completeness of the luminosity function, Spectroscopic studies above 2 keV were performed for unidentified X-ray sources towards the Galactic bulge; 13 follow-up X-ray observations were carried out with Suzaku and Chandra. We have almost completed the observations of these unidentified bulge sources, and then obtained good-quality hard (> 2keV) X-ray spectra. So far we newly identified 1 LMXB, 2 clusters of galaxies, and 3 X-ray active stars. These result suggests that the number of the LMXBs in the Galactic bulge is smaller than those in the bulges of other disk galaxies and elliptical galaxies.
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Report
(4 results)
Research Products
(11 results)
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[Journal Article] Change of the spectrum in persistent state of X-ray burster GRS1747-312 - And other phenomena in the persistent state -2014
Author(s)
Shigetaka Saji, Hideyuki Mori, Hironori Matsumoto, Tadayasu Dotani, Yoshitomo Maeda, Masachika Iwai
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Journal Title
Suzaku-MAXI 2014: Expanding the Frontiers of the X-ray Universe, proceedings of a conference held 19-22 February, 2014 at Ehime University, Japan. Edited by M. Ishida, R. Petre, and K. Mitsuda
Volume: 1
Pages: 212-212
Related Report
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