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arXiv · 1204.3357

On the soft X-ray emission of M82

Jiren Liu·Q. Daniel Wang·Shude Mao
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Abstract

We present a spatial analysis of the soft X-ray and Hα emissions from the outflow of the starburst galaxy M82. We find that the two emissions are tightly correlated on various scales. The O VII triplet of M82, as resolved by X-ray grating observations of XMM-Newton, is dominated by the forbidden line, inconsistent with the thermal prediction. The O VII triplet also shows some spatial variations. We discuss three possible explanations for the observed O VII triplet, including the charge exchange at interfaces between the hot outflow and neutral cool gas, a collisional non-equilibrium-ionization recombining plasma, and resonance scattering.

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Jiren Liu, Q. Daniel Wang, Shude Mao. 2012-04-16. On the soft X-ray emission of M82. https://doi.org/10.1002/asna.201211667

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