Poster

On the Origin of the X-ray Emission of the Superwind of M82

Jiren Liu (National Astronomical Observatories of China)

Recent XMM-Newton observation of the OVII Ka triplet of M82 suggests that the X-ray emission of the superwind is due to charge exchange emission rather than thermal emission as traditionally supposed. The charge exchange X-ray emission occurs at the interfaces between the hot plasma and cool gas, which has been used to explain the bright X-ray emission observed in comets. Charge exchange is also supported by the tight spatial correlation between Ha and X-ray emissions of the superwind. To correctly understand the feedback process of superwinds and to measure the metals and energies they provided, it is crucial to determine the origin of the X-ray emission of the superwind of M82. We will discuss recent progresses on this puzzle of the superwind of M82.

This page has been updated on