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What dominates the X-ray emission of normal galaxies?

Published online by Cambridge University Press:  27 October 2016

Ann E. Hornschemeier ,
Anna Wolter  and
Dong-Woo Kim
Ann E. Hornschemeier
Affiliation:
NASA Goddard Space Flight Center, Laboratory for X-ray Astrophysics, Code 662, Greenbelt, MD 20771, email: Ann.Hornschemeier@nasa.gov
Anna Wolter
Affiliation:
INAF-Osservatorio Astronomico di Brera, Via Brera 28, 20121, Milano, Italy email: anna.wolter@brera.inaf.it
Dong-Woo Kim
Affiliation:
Smithsonian Astrophysical Observatory 60 Garden Street, Cambridge, MA 02138 email: kim@cfa.harvard.edu
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Abstract

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X-ray surveys of normal galaxies, i.e. those that do not host actively supermassive black holes, have revealed important information on the nature of accreting stellar-mass compact objects (neutron stars and black holes), constraints on populations of possible intermediate-mass black holes (102–5M⊙), and on the reservoir of materials in the hot interstellar medium of the most massive galaxies. Here we summarize briefly the results of Chandra and NuSTAR surveys of several samples of galaxies covered during the 2015 IAU General Assembly. This includes a comprehensive study of six nearby starburst galaxies by the NuSTAR mission, of high-redshift galaxies from the 6 Ms Chandra Deep Field South for which evolutionary trends in X-ray emission over cosmic time have been measured, of collisional ring galaxies which are excellent local environments for studying intermediate-mass black holes and of elliptical galaxies which are ideal for study of the hot gas reservoirs containing the effects of stellar and AGN feedback.

Keywords

galaxies: starburstgalaxies: high-redshiftX-rays: galaxiesX-rays: binariesblack hole physicsX-rays: ISMgalaxies: elliptical and lenticularcD(cosmology:) early universe
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , General Assembly A29B: Astronomy in Focus , August 2015 , pp. 124 - 135
Copyright
Copyright © International Astronomical Union 2016 

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