YITP WORKSHOP ON
Quasi-Periodic Oscillations and Time Variabilities of Accretion Flows
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ABSTRACT

NAME
INSTITUTE
TITLE OF THE TALK
T. Kohmura
Kogakuin University, Japan
Aperiodic X-Ray Time Variation of of X-ray Binary Pulsars.
We present the study of the aperiodic time variation of the binary X-ray pulsars observed with the Rossi X-Ray Timing Explorer, (RXTE).
The iron K lines observed from X-ray pulsars is thought to be a fluorescenct lines and considered to come from a re-processing matter around the neutron star.
Thus the X-rays in the energy band containing the iron K lines is expected to have a certain delay from the higher energy X-rays. We have discovered that the temporal variation of iron-band emission is delayed as compared with that of the other energy X-rays. We also have discovered that higher X-rays are advanced in comparison with the lower energy X-rays in some X-ray binary pulsars.
We will present our detail analysis by using cross spectra and discuss the implications of our results. @


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