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arXiv 1710.04166astro-ph.GA
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Messier 81的普朗克视图与其晕映射

Messier 81's Planck view vs its halo mapping

V. G. Gurzadyan, F. De Paolis, A. A. Nucita, A. L. Kashin, A. Amekhyan, S. Sargsyan, G. Yegorian, A. Qadir, G. Ingrosso, Ph. Jetzer, D. Vetrugno

摘要:

本文是基于普朗克观测的M82星系及其晕的后续文章。与M82的情况一样,M81星系的南北和东西温度也有很大的不对称性,延伸到大约$1.5^\circ$的银河系中心距离。温度的不对称性几乎是频率无关的,可以解释为多普勒引起的效应有关的M81晕旋转和/或触发的引力相互作用的M81集团内的星系。随着几个附近的边缘上的螺旋星系的类似研究,CMB温度不对称的方法,因此被证明是作为一个直接的工具来映射星系晕和/或星系际桥梁,在其他波段或其他方法不可见。

英文摘要:

This paper is a follow-up of a previous paper about the M82 galaxy and its halo based on Planck observations. As in the case of M82, so also for the M81 galaxy a substantial North-South and East-West temperature asymmetry is found, extending up to galactocentric distances of about $1.5^\circ$. The temperature asymmetry is almost frequency independent and can be interpreted as a Doppler-induced effect related to the M81 halo rotation and/or triggered by the gravitational interaction of the galaxies within the M81 Group. Along with the analogous study of several nearby edge-on spiral galaxies, the CMB temperature asymmetry method thus is shown to act as a direct tool to map the galactic haloes and/or the intergalactic bridges, invisible in other bands or by other methods.

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。

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