Probing the Nature of Super-Luminous X-Ray Sources in Nearby Galaxies

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Chandra Proposal Id #02600539

Scientific paper

We propose Chandra ACIS-S observations of a number of super-luminous (L_X > 10(39) erg s(-1) ) extra-nuclear X-ray sources seen in nearby galaxies. Though the existence of such sources has long been recognized, their nature remains very uncertain. The superb imaging capabilities of Chandra will reveal whether these are truly point-like objects, groups of discrete sources or predominantly diffuse emission. The observations will also provide high quality CCD spectroscopy and astrometry as well as testing for gross temporal variability. This programme will reveal whether the X-ray luminosity is derived from accreting black holes, recent supernovae, complexes of sources or, perhaps, an entirely new class of astrophysical object.

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