Evolution of X-ray Binaries Across Cosmic Time and Energy Feedback at High Redshift

Details Evolution of X-ray Binaries Across Cosmic Time and Energy Feedback at High Redshift Evolution of X-ray Binaries Across Cosmic Time and Energy Feedback at High Redshift

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012hell.conf...15f&link_type=abstract

10th Hellenic Astronomical Conference, Proceedings of the conference held at Ioannina, Greece, 5-8 September 2011. Edited by Io

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High redshift galaxies are unique laboratories for studying the formation and evolution of X-ray binary (XRB) populations on cosmological timescales, as they probe metallicities and star-formation rates not present in the local universe. I will present results from a large scale population synthesis study that models the XRB populations from the first galaxies of the universe until today. We use as input in our modeling the Millennium II Cosmological Simulation and the updated semi-analytic galaxy catalog by Guo et al. (2011), in order to properly account for the star formation history and metallicity evolution of the universe. Our modeling, which is compared to the most recent Chandra surveys of distant galaxies, gives prediction about the integrated specific X-ray luminosity as a function of redshift and the evolution of the galaxy X-ray luminosity function of normal galaxies in different redshift bins. Finally, I will discuss the energy feedback of XRBs in high redshift galaxies, and its possible contribution to the re-ionization and the thermal evolution of the early Universe.

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