X-ray Study of the Accretion disk of the Black Hole LMC X-1

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X-ray Study of the Accretion disk of the Black Hole LMC X-1

Persistent ID (NDL): info:ndljp/pid/9921962

Material type: 博士論文

Author: 小山, 志勇

Publisher: 埼玉大学大学院理工学研究科

Publication date: 2015

Material Format: Digital

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Name of awarding university/degree: 埼玉大学,博士(理学)

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Note (General)：: type:textThis paper reports the results of Suzaku observation of the spectral variation of the black hole binary LMC X-1 in the soft state. The observ...

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Material Type: 博士論文
Title: X-ray Study of the Accretion disk of the Black Hole LMC X-1
Author/Editor: 小山, 志勇
Author Heading: 小山, 志勇
Publication, Distribution, etc.: 埼玉大学大学院理工学研究科
Publication Date: 2015
Publication Date (W3CDTF): 2015
Alternative Title: LMC X-1のX線観測によるブラックホール降着円盤の研究
Periodical title: 博士論文（埼玉大学大学院理工学研究科（博士後期課程））
Degree grantor/type: 埼玉大学
Date Granted: 2015-03-24
Date Granted (W3CDTF): 2015-03-24
Dissertation Number: 甲第976号
Degree Type: 博士(理学)
Conferring No. (Dissertation): 甲第976号
Text Language Code: eng
Target Audience: 一般
Note (General): type:text
This paper reports the results of Suzaku observation of the spectral variation of the black hole binary LMC X-1 in the soft state. The observation was carried out in 2009 from July 21 to 24. The obtained net count rate was ∼ 30 counts s−1 in the 0.5–50 keV band with ∼ 10% peak-to-peak flux variation. The time-averaged X-ray spectra are explained by a multicolor disk and combination of hard and soft Comptonized emissions. Significant spectral evolution was observed above 8 keV along with a flux decrease on a timescale of ∼104–105 s. By spectral fitting, we show that this behavior is well explained by changes in the hard Comptonized emission component in contrast to the maintained disk and soft Comptonized emission. Comparing the other black hole binaries suggested the spectral evolution picture that the thermal Comptonizing cloud is cooled by expansion of optically thick accretion disk.
1 Introduction 132 Review 172.1 Fundamental Properties of Black Hole . . . . . . . . . . . . . . . . . . . . . 182.2 Observation of Black Hole Binaries . . . . . . . . . . . . . . . . . . . . . . . 202.2.1 Discovery of Black Hole Binaries . . . . . . . . . . . . . . . . . . . . 202.2.2 X-ray Properties of Black Hole Binaries . . . . . . . . . . . . . . . . . 212.2.3 Spectral States Evolution . . . . . . . . . . . . . . . . . . . . . . . . 242.3 Physics and Models of Accretion Disks . . . . . . . . . . . . . . . . . . . . . 272.3.1 Mass and Spin Estimation from Accretion Disk . . . . . . . . . . . . 272.3.2 Standard Accretion Disk Picture . . . . . . . . . . . . . . . . . . . . 302.3.3 Multi-Color Disk Model . . . . . . . . . . . . . . . . . . . . . . . . . 312.4 Application of General Relativity . . . . . . . . . . . . . . . . . . . . . . . . 342.4.1 Reflection and Fe K Line Profile . . . . . . . . . . . . . . . . . . . . . 342.5 Comptonized Accretion Disk . . . . . . . . . . . . . . . . . . . . . . . . . . . 372.5.1 Compton y parameter . . . . . . . . . . . . . . . . . . . . . . . . . . 372.5.2 Comptonized Disk in the Very High State . . . . . . . . . . . . . . . 372.5.3 Two Comptonization Model of the Very High State Spectrum . . . . 392.6 Open Issues and Address of Present Thesis . . . . . . . . . . . . . . . . . . . 392.6.1 Unified Picture of Spectral Evolution . . . . . . . . . . . . . . . . . . 392.6.2 Address of Present Thesis . . . . . . . . . . . . . . . . . . . . . . . . 412.6.3 LMC X-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 433 INSTRUMENTATION 453.1 The Suzaku satellite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 453.1.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 453.1.2 X-ray Telescope (XRT) . . . . . . . . . . . . . . . . . . . . . . . . . . 493.1.3 X-ray Imaging Spectrometer (XIS) . . . . . . . . . . . . . . . . . . . 493.1.4 Hard X-ray Detector (HXD) . . . . . . . . . . . . . . . . . . . . . . . 514 Observation and Data Reduction 594.1 Suzaku Observation of LMC X-1 . . . . . . . . . . . . . . . . . . . . . . . . . 594.2 Data Reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 595 Analysis and Results 655.1 Light Curves and Timing Analysis . . . . . . . . . . . . . . . . . . . . . . . . 655.2 Analysis of Time-Averaged Spectra . . . . . . . . . . . . . . . . . . . . . . . 655.3 Analysis of Spectral Variation . . . . . . . . . . . . . . . . . . . . . . . . . . 726 Discussion 776.1 Summary of Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 776.2 Evolution of Comptonization Parameters . . . . . . . . . . . . . . . . . . . . 787 Conclusion 81
指導教員 : 寺田幸巧
DOI: 10.24561/00010352
https://doi.org/10.24561/00010352
Persistent ID (NDL): info:ndljp/pid/9921962
https://dl.ndl.go.jp/pid/9921962
Collection: 障害者向け資料
Collection (Materials For Handicapped People:1): テキストデータ
Collection (particular): 国立国会図書館デジタルコレクション > デジタル化資料 > 博士論文
https://dl.ndl.go.jp/collections/A00014
Acquisition Basis: 博士論文（自動収集）
Date Accepted (W3CDTF): 2016-04-01T14:32:40+09:00
Date Created (W3CDTF): 2015-12-16
Format (IMT): application/pdf
Access Restrictions: 国立国会図書館内限定公開
Service for the Digitized Contents Transmission Service: 図書館・個人送信対象外
Availability of remote photoduplication service: 可
Periodical Title (URI): https://doi.org/10.24561/00010352
http://id.nii.ac.jp/1586/00010352/
Data Provider (Database): 国立国会図書館 : 国立国会図書館デジタルコレクション
https://dl.ndl.go.jp

X-ray Study of the Accretion disk of the Black Hole LMC X-1

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