X-ray Localization of the Globular Cluster G1 in M31

Details X-ray Localization of the Globular Cluster G1 in M31 X-ray Localization of the Globular Cluster G1 in M31

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007cxo..prop.2472k&link_type=abstract

Chandra Proposal ID #09620084

Astronomy and Astrophysics

Astronomy

Chandra Proposal Id #09620084

Scientific paper

Localization of the X-ray emission of the globular cluster G1 in M31 will enable us to determine the origin of the X-ray radiation. From previous X-ray observations, the emission could be either due to accretion of cluster gas by the central intermediate-mass black hole, or a typical luminous low-mass X-ray binary. However, all previous X-ray observations do not allow an accurate relative astrometry. Using Chandra, we can achieve ~0.1" relative astrometry between Chandra and optical images by utilizing multiple X-ray sources with optical counterparts. The accuracy of the astrometry will allow us to determine the nature of the X-ray emission and it may provide an independent evidence for intermediate-mass black hole in G1.

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