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arXiv · 1310.6821

Power Spectrum Density of long-term MAXI data

Juri Sugimoto·Tatehiro Mihara·Mutsumi Sugizaki·Motoko Serino·Shunji Kitamoto·Ryousuke Sato·Yoshihiro Ueda·Shiro Ueno
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Abstract

Monitor of All-sky X-ray Image (MAXI) on the International Space Station has been observing the X-ray sky since 2009 August 15. It has accumulated the X-ray data for about four years, so far. X-ray objects are usually variable and their variability can be studied by the power spectrum density (PSD) of the X-ray light curves.We applied our method to calculate PSDs of several kinds of objects observed with MAXI. We obtained significant PSDs from 16 Seyfert galaxies.For blackhole binary Cygnus X-1 there was a difference in the shape of PSD between the hard state and the soft state. For high mass X-ray binaries, Cen X-3, SMC X-1, and LMC X-4, there were several peaks in the PSD corresponding to the orbital period and the superorbital period.

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Juri Sugimoto, Tatehiro Mihara, Mutsumi Sugizaki, Motoko Serino, Shunji Kitamoto, Ryousuke Sato, Yoshihiro Ueda, Shiro Ueno. 2013-10-25. Power Spectrum Density of long-term MAXI data. https://arxiv.org/abs/1310.6821

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