Power Spectrum Density of long-term MAXI data
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.
Keywords
Cite
@article{arxiv.1310.6821,
title = {Power Spectrum Density of long-term MAXI data},
author = {Juri Sugimoto and Tatehiro Mihara and Mutsumi Sugizaki and Motoko Serino and Shunji Kitamoto and Ryousuke Sato and Yoshihiro Ueda and Shiro Ueno},
journal= {arXiv preprint arXiv:1310.6821},
year = {2013}
}
Comments
4 pages, 4 figures, accepted for proceedings of The 12th Asia Pacific Physics Conference of AAPPS