Hostname: page-component-77c89778f8-m8s7h Total loading time: 0 Render date: 2024-07-16T19:20:50.727Z Has data issue: false hasContentIssue false

Beyond the Limit of Deep X-ray Surveys: Galaxies or AGN?

Published online by Cambridge University Press:  12 May 2006

Richard E. Griffiths
Affiliation:
Department of Physics, Carnegie Mellon University, Pittsburgh, PA 15213, USA email: griffith@astro.phys.cmu.edu
Takamitsu Miyaji
Affiliation:
Department of Physics, Carnegie Mellon University, Pittsburgh, PA 15213, USA email: griffith@astro.phys.cmu.edu
Adam Knudson
Affiliation:
Department of Physics, Carnegie Mellon University, Pittsburgh, PA 15213, USA email: griffith@astro.phys.cmu.edu
Matthew Schurch
Affiliation:
Department of Physics, Carnegie Mellon University, Pittsburgh, PA 15213, USA email: griffith@astro.phys.cmu.edu
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The great sensitivities of the Chandra X-ray Observatory and XMM-Newton are allowing us to explore the X-ray emission from galaxies at moderate to high redshift. By using the stacking method with CXO data, we show that we can detect the ensemble emission from normal elliptical, spiral and irregular galaxies out to redshifts approaching one. The average X-ray luminosity can then be compared with the results of models of the evolution in the numbers of X-ray binaries and can possibly be used to constrain models of star formation. In order to account for the increasing luminosity of spiral galaxies from low to moderate redshift, AGN components may need to be invoked.

Type
Contributed Papers
Copyright
2006 International Astronomical Union