Deep Surveys with XMM and CXO: Comparison of HDF-N results and Comments on the X-ray Evolution of Galaxies

Details Deep Surveys with XMM and CXO: Comparison of HDF-N results and Comments on the X-ray Evolution of Galaxies Deep Surveys with XMM and CXO: Comparison of HDF-N results and Comments on the X-ray Evolution of Galaxies

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..aprj11001g&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

A comparison is made of the results of the 1Ms CXO and the 160ks XMM-Newton deep surveys of the HDF-N. The confusion of sources in the XMM image is assessed as a function of energy. Source spectra are compared and the optical ids. of many XMM sources are aided by the CXO positions. The XMM spectra are summed for each broad optical classification. The harder response of XMM is highlighted with respect to the nature of sources contributing to the bulk of the XRB, i.e. AGN with heavy absorption. Comments are made on the nature of the sources contributing to the log(N) - log(S) at fluxes between 10-16 and 10-17 ergs cm-2 s-1 (0.5 - 2 keV), where the number counts are constrained by fluctuation analysis (Miyaji and Griffiths ApJ 564, L5 (2002). We may be observing the X-ray evolution of normal galaxies, as predicted from expected evolution in the numbers of binaries (Ghosh & White (ApJ 559 L97) and applied to galaxy X-ray fluxes by Ptak et al.(ApJ 559 L91 2001). Finally, we comment on the cosmic variance across different XMM fields.

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