Luminosity Functions and Point Source Properties from Multiple Chandra Observations of M81

Details Luminosity Functions and Point Source Properties from Multiple Chandra Observations of M81 Luminosity Functions and Point Source Properties from Multiple Chandra Observations of M81

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cfdd.confe.192s&link_type=abstract

Chandra's First Decade of Discovery, Proceedings of the conference held 22-25 September, 2009 in Boston, MA. Edited by Scott Wo

Physics

Galaxies

Scientific paper

We present an analysis of 15 Chandra observations of the nearby spiral galaxy M81 taken over the course of six weeks in May-July 2005. Each observation reaches a sensitivity of less than 10^37 erg/s. With these observations and one previous deeper Chandra observation, we detect hundreds of point sources and analyze their spectral and variability properties on timescales of days, months, and years. We conduct variability analyses of the X-ray luminosity functions of the total population as well as the bulge and disk populations of point sources separately. We find that, despite significant variability of individual sources, the X-ray luminosity function is fairly stable.

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