In this thesis, RXTE timing analysis of Galactic Microquasars GRO J1655-40 and
GRS 1915+105, the Chandra and RXTE joint spectral analysis of GRS 1915+105
are presented. We have investigated quasi periodic oscillations (QPOs) in the
black hole binaries GRO J1655-40 and GRS 1915+105 observed in 99 and 122
observations made by the Proportional Counter Array (PCA) on board Rossi
X-Ray Timing Explorer (RXTE) in both low energy band (2-12 keV) and high
energy band (13-27 keV), respectively. Four different X-ray states are seen in the
combined characteristics of power spectra, light curves extracted by using All Sky
Monitor (ASM) and spectra during 1996 and 2005. Timing analysis of RXTE
observations of both of two black hole binaries GRO J1655-40 and GRS 1915+105
displays twin high frequency quasi periodic oscillations (QPOs) which are sometimes
simultaneous in high energy band. It is also shown that the time averaged
30 ksec Chandra grating spectrum analysis and RXTE spectrum analysis of recent
observation of GRS 1915+105 in the very high state are consistent with the
parameters which were mentioned before. We briefly discussed our results and
the models on black hole spin and mass.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12607392/index.pdf |
| Date | 01 July 2006 |
| Creators | Bulbul, Gul Esra |
| Contributors | Baykal, Altan |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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