Physics
Scientific paper
Sep 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cxo..prop.2689s&link_type=abstract
Chandra proposal ID #10620604
Physics
Scientific paper
We propose a census of the most luminous off-nucleus point-like X-ray sources by observing a sample of 7 high-star-formation-rate Arp interacting galaxy pairs. We expect to discover 30-50 new ULXs with luminosities >5e39 erg/s including as many as 20 above 2e40 erg/s. This represents up to a three-fold increase in the number of known ULX candidates above 1e40. This census will determine to high statistical significance whether or not there exists an upper limit to the luminosity of ULXs or if the power law slope of the luminosity function at lower luminosities continues unabated to higher values. This will have profound implications for the physics underlying the ULX phenomena, in particular for the mass distribution of accreting black holes.
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