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arXiv · 1510.01483

Iron emission line from the spiral galaxy M101

Shigeo Yamauchi
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Abstract

Archival Suzaku data of the face-on spiral galaxy M101 were analyzed. An intense emission line at 6.72^{+0.10}_{-0.12} keV was detected in the central region. This line is identified with a K-line from He-like iron, which indicates the existence of a thin thermal plasma with a temperature of several keV. The iron line luminosity within the central 5 arcmin radius region is estimated to be (2-12)x10^{37} erg s^{-1}. The origin of the iron emission line is discussed.

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Shigeo Yamauchi. 2015-10-06. Iron emission line from the spiral galaxy M101. https://doi.org/10.1093/pasj%2Fpsv107

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