arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1807.00874astro-ph.HE
收藏

高银纬天区7年MAXI/GSC X射线源表(3 MAXI)

The 7-year MAXI/GSC X-ray Source Catalog in the High Galactic-Latitude Sky (3MAXI)

Taiki Kawamuro, Yoshihiro Ueda, Megumi Shidatsu, Takafumi Hori, Morii Mikio, Satoshi Nakahira, Naoki Isobe, Nobuyuki Kawai, Tatehiro Mihara, Masaru Matsuoka, Ta… 展开作者

Taiki Kawamuro, Yoshihiro Ueda, Megumi Shidatsu, Takafumi Hori, Morii Mikio, Satoshi Nakahira, Naoki Isobe, Nobuyuki Kawai, Tatehiro Mihara, Masaru Matsuoka, Takashi Morita, Motoki Nakajima, Hitoshi Negoro, Saeko Oda, Takanori Sakamoto, Motoko Serino, Mutsumi Sugizaki, Atsushi Tanimoto, Hiroshi Tomida, Yohko Tsuboi, Hiroshi Tsunemi, Shiro Ueno, Kazutaka Yamaoka, Satoshi Yamada, Atsumasa Yoshida, Wataru Iwakiri, Yuta Kawakubo, Yasuharu Sugawara, Satoshi Sugita, Yutaro Tachibana, Taketoshi Yoshii

摘要:

我们基于2009年8月13日至2016年7月31日的7年数据,在高银河系纬度天空($|b| > 10^\circ$)中呈现第三个MAXI/GSC目录,作为低银河系纬度天空($|b| < 10^\circ$ ; Hori et al. 2018)的补充。我们在4- 10 keV波段收集了682个探测到的$s_{\rm D,4-10~keV} \geq 6.5$显著性源。一个二维图像拟合的泊松似然算法($C$ -统计)的基础上采用的检测和约束其通量和位置。4- 10 keV的灵敏度达到$\approx 0.48$ mCrab,或$\approx 5.9 \times 10^{-12}$ erg cm $^{-2}$ s $^{-1}$,超过一半的勘测区域。与采用$s_{\rm D,4-10~keV} \geq 7$阈值的37个月目录(Hiroi et al. 2013)相比,源数量增加了1.4倍。进一步估计了3- 4 keV和10- 20 keV带中的通量,并使用3- 4 keV、4- 10 keV、3- 10 keV和10- 20 keV带通量计算了硬度比(HR)。我们还作出了4- 10 keV的光变曲线在一年仓的所有来源和表征其变异性指数的基础上的似然函数和超额方差。可能的对应物来自Swift、Uhuru、RXTE、XMM-Newton和ROSAT的五个主要X射线巡天星表,以及一个X射线星系团星表(MCXC)。我们的目录提供了通量,位置,检测意义,HRs,一年箱光变曲线,变异指数和对应的候选人。

英文摘要:

We present the third MAXI/GSC catalog in the high Galactic-latitude sky ($|b| > 10^\circ$) based on the 7-year data from 2009 August 13 to 2016 July 31, complementary to that in the low Galactic-latitude sky ($|b| < 10^\circ$; Hori et al. 2018). We compile 682 sources detected at significances of $s_{\rm D,4-10~keV} \geq 6.5$ in the 4--10 keV band. A two-dimensional image fit based on the Poisson likelihood algorithm ($C$-statistics) is adopted for the detections and constraints on their fluxes and positions. The 4--10 keV sensitivity reaches $\approx 0.48$ mCrab, or $\approx 5.9 \times 10^{-12}$ erg cm$^{-2}$ s$^{-1}$, over the half of the survey area. Compared with the 37-month catalog (Hiroi et al. 2013), which adopted a threshold of $s_{\rm D,4-10~keV} \geq 7$, the source number increases by a factor of $\sim$1.4. The fluxes in the 3--4 keV and 10--20 keV bands are further estimated, and hardness ratios (HRs) are calculated using the 3--4 keV, 4--10 keV, 3--10 keV, and 10--20 keV band fluxes. We also make the 4--10 keV lightcurves in one year bins for all the sources and characterize their variabilities with an index based on a likelihood function and the excess variance. Possible counterparts are found from five major X-ray survey catalogs by Swift, Uhuru, RXTE, XMM-Newton, and ROSAT, and an X-ray galaxy-cluster catalog (MCXC). Our catalog provides the fluxes, positions, detection significances, HRs, one-year bin lightcurves, variability indices, and counterpart candidates.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑