Finding Black Holes and Understanding Star Cluster Evolution with Chandra

Details Finding Black Holes and Understanding Star Cluster Evolution with Chandra Finding Black Holes and Understanding Star Cluster Evolution with Chandra

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003cxo..prop.1431p&link_type=abstract

Chandra Proposal ID #05400633

Physics

Chandra Proposal Id #05400633

Scientific paper

Recent theoretical models predict that young, massive star clusters of the type we propose to observe should be unusually rich in black-hole X-ray binaries (BHXBs); they are at an age when BHs have formed but have not yet been expelled. We observed one such clusters in the last cycle; amazingly, no X-ray sources were detected down to 1.5 times 10^{32} erg/s (we expected 5-10 sources). This could signal a statistical fluke or a need for significant change to our current understanding of star cluster evolution as well as our understanding of the formation and evolution of BHXBs. We propose to observe five more clusters (in two observations) to further explore this exciting topic.

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