The First MAXI/GSC Catalog in the High Galactic-Latitude Sky

Kazuo Hiroi; Yoshihiro Ueda; Naoki Isobe; Masaaki Hayashida; Satoshi Eguchi; Mutsumi Sugizaki; Nobuyuki Kawai; Hiroshi Tsunemi; Masaru Matsuoka; Tatehiro Mihara; Kazutaka Yamaoka; Masaki Ishikawa; Masashi Kimura; Hiroki Kitayama; Mitsuhiro Kohama; Takanori Matsumura; Mikio Morii; Yujin E. Nakagawa; Satoshi Nakahira; Motoki Nakajima; Hitoshi Negoro; Motoko Serino; Megumi Shidatsu; Tetsuya Sootome; Kousuke Sugimori; Fumitoshi Suwa; Takahiro Toizumi; Hiroshi Tomida; Yohko Tsuboi; Shiro Ueno; Ryuichi Usui; Takayuki Yamamoto; Kyohei Yamazaki; Atsumasa Yoshida; the MAXI Collaboration

doi:10.1093/pasj/63.sp3.S677

The First MAXI/GSC Catalog in the High Galactic-Latitude Sky

High Energy Astrophysical Phenomena 2015-05-30 v1

Authors: Kazuo Hiroi , Yoshihiro Ueda , Naoki Isobe , Masaaki Hayashida , Satoshi Eguchi , Mutsumi Sugizaki , Nobuyuki Kawai , Hiroshi Tsunemi , Masaru Matsuoka , Tatehiro Mihara , Kazutaka Yamaoka , Masaki Ishikawa , Masashi Kimura , Hiroki Kitayama , Mitsuhiro Kohama , Takanori Matsumura , Mikio Morii , Yujin E. Nakagawa , Satoshi Nakahira , Motoki Nakajima , Hitoshi Negoro , Motoko Serino , Megumi Shidatsu , Tetsuya Sootome , Kousuke Sugimori , Fumitoshi Suwa , Takahiro Toizumi , Hiroshi Tomida , Yohko Tsuboi , Shiro Ueno , Ryuichi Usui , Takayuki Yamamoto , Kyohei Yamazaki , Atsumasa Yoshida , the MAXI Collaboration

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Abstract

We present the first unbiased source catalog of the Monitor of All-sky X-ray Image (MAXI) mission at high Galactic latitudes ( $|b| > 10^{\circ}$ ), produced from the first 7-month data (2009 September 1 to 2010 March 31) of the Gas Slit Camera in the 4--10 keV band. We develop an analysis procedure to detect faint sources from the MAXI data, utilizing a maximum likelihood image fitting method, where the image response, background, and detailed observational conditions are taken into account. The catalog consists of 143 X-ray sources above 7 sigma significance level with a limiting sensitivity of $\sim1.5\times10^{-11}$ ergs cm $^{-2}$ s $^{-1}$ (1.2 mCrab) in the 4--10 keV band. Among them, we identify 38 Galactic/LMC/SMC objects, 48 galaxy clusters, 39 Seyfert galaxies, 12 blazars, and 1 galaxy. Other 4 sources are confused with multiple objects, and one remains unidentified. The log $N$ - log $S$ relation of extragalactic objects is in a good agreement with the HEAO-1 A-2 result, although the list of the brightest AGNs in the entire sky has significantly changed since that in 30 years ago.

Keywords

MAXI/GSC X-ray catalog high Galactic latitude active galactic nuclei galaxy clusters source detection log N - log S

Cite

@article{arxiv.1108.5516,
  title  = {The First MAXI/GSC Catalog in the High Galactic-Latitude Sky},
  author = {Kazuo Hiroi and Yoshihiro Ueda and Naoki Isobe and Masaaki Hayashida and Satoshi Eguchi and Mutsumi Sugizaki and Nobuyuki Kawai and Hiroshi Tsunemi and Masaru Matsuoka and Tatehiro Mihara and Kazutaka Yamaoka and Masaki Ishikawa and Masashi Kimura and Hiroki Kitayama and Mitsuhiro Kohama and Takanori Matsumura and Mikio Morii and Yujin E. Nakagawa and Satoshi Nakahira and Motoki Nakajima and Hitoshi Negoro and Motoko Serino and Megumi Shidatsu and Tetsuya Sootome and Kousuke Sugimori and Fumitoshi Suwa and Takahiro Toizumi and Hiroshi Tomida and Yohko Tsuboi and Shiro Ueno and Ryuichi Usui and Takayuki Yamamoto and Kyohei Yamazaki and Atsumasa Yoshida and the MAXI Collaboration},
  journal= {arXiv preprint arXiv:1108.5516},
  year   = {2015}
}

Comments

14 pages, including 10 figures and 3 tables, PASJ accepted

The First MAXI/GSC Catalog in the High Galactic-Latitude Sky

Abstract

Keywords

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