X-ray emission from early-type galaxies

Details X-ray emission from early-type galaxies X-ray emission from early-type galaxies

2010-11-09

arxiv.org/abs/1011.2011v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

6 pages, 4 figures; to appear in the Proceedings of "The Wide Field X-ray Telescope Workshop", held in Bologna, Italy, Nov. 25

Scientific paper

The past decade has seen a large progress in the X-ray investigation of early-type galaxies of the local universe, and first attempts have been made to reach redshifts z>0 for these objects, thanks to the high angular resolution and sensitivity of the satellites Chandra and XMM-Newton. Major advances have been obtained in our knowledge of the three separate contributors to the X-ray emission, that are the stellar sources, the hot gas and the galactic nucleus. Here a brief outline of the main results is presented, pointing out the questions that remain open, and finally discussing the prospects to solve them with a wide area X-ray survey mission such as WFXT.

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