M82 X-1阴影下的一个可能的微类星体
A likely Micro-quasar in the Shadow of M82 X-1
摘要：
超亮X射线源（ULX）M82 X-1具有高X射线光度（$10^{40}-10^{41} {\rm erg s^{-1}}$）和准周期振荡，是局域宇宙中最有希望的中等质量黑洞候选者之一，可能与射电耀斑源有关。在这项工作中，应用亚像元技术的120 ksChandra观测（ID：10543）的M82 X-1，我们分裂成两个源分开的1.1 $\arcsec$。在M82的其他观测中没有发现次级源。发现该射电耀斑源与M82 X-1无关，而与附近的爆发光度为$\sim 10^{39} {\rm erg s^{-1}}$的瞬变源S1有关。S1的X射线爆发和射电耀斑活动类似于最近在M31中发现的微类星体，因此S1很可能是隐藏在M82 X-1阴影下的微类星体。
英文摘要：
The ultra-luminous X-ray source (ULX) M82 X-1 is one of the most promising intermediate mass black hole candidates in the local universe based on its high X-ray luminosities ($10^{40}-10^{41} {\rm erg s^{-1}}$) and quasi-periodic oscillations, and is possibly associated with a radio flare source. In this work, applying the sub-pixel technique to the 120 ks Chandra observation (ID: 10543) of M82 X-1, we split M82 X-1 into two sources separated by 1.1$\arcsec$. The secondary source is not detected in other M82 observations. The radio flare source is found to associate not with M82 X-1, but with the nearby transient source S1 with an outburst luminosity of $\sim 10^{39} {\rm erg s^{-1}}$. With X-ray outburst and radio flare activities analogous to the recently discovered micro-quasar in M31, S1 is likely to be a micro-quasar hidden in the shadow of M82 X-1.
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