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6 papers
X-ray variability, viscous time scale and Lindblad resonances in LMXBs
M. Gilfanov, V. Arefiev
Based on RXTE/ASM and EXOSAT/ME data we studied X-ray variability of persistent LMXBs in the 1e-8 - 1e-1 Hz frequency range, aiming to detect features in their power density spectr…
Comptonization, reflection and noise in black hole binaries
M. Gilfanov, E. Churazov, M. Revnivtsev
Based on the analysis of a large sample of RXTE/PCA observations of several black hole binaries in the low spectral state we show that a correlation exists between the spectral par…
Reflection and noise in Cygnus X-1
M. Gilfanov, E. Churazov, M. Revnivtsev
We analyzed RXTE/PCA observations of Cyg X-1 from 1996-1998. We found a tight correlation between the characteristic noise frequencies (e.g. the break frequency nu_br) and the spec…
Compact and Diffuse Sources in the Galactic Center Region
E. Churazov, M. Gilfanov, R. Sunyaev +1
The 10 by 10 degrees region around dynamic center of our Galaxy is known to host a large number of bright X-ray sources, most of which are low mass binary systems. While high lumin…
RXTE broad band observations of X-ray Nova XTE J1755-324
M. Revnivtsev, M. Gilfanov, E. Churazov
The properties of X-ray Nova XTE J1755-324, observed with RXTE and GRANAT observatories in 1997 are reported. The lightcurve of the source was typical for X-ray Novae, except for s…
Properties Of The Hard X-ray Emission From The Black Hole Candidates: Cygnus X-1 And 1E1740.7-2942
S. Kuznetsov, M. Gilfanov, E. Churazov +13
The entire dataset of the GRANAT/SIGMA observations of Cyg X-1 and 1E1740.7-2942 in 1990-1994 was analyzed in order to search for correlations between primary observational charact…