Locating the Elusive Counterpart of the Unusual X-Ray Dipper X1624-490

Details Locating the Elusive Counterpart of the Unusual X-Ray Dipper X1624-490 Locating the Elusive Counterpart of the Unusual X-Ray Dipper X1624-490

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..804w&link_type=abstract

Chandra Proposal ID #03400316

Physics

Chandra Proposal Id #03400316

Scientific paper

X-ray dippers are high inclination low mass X-ray binary systems in which the central X-ray source is periodically occulted by a thickened region of the accretion disk rim. X1624-490 is one of the most unusual members of this class; its persistent X-ray emission is the brightest, its dip profiles the most erratic, and its 20.9-hour orbital period is the longest. Despite a wealth of X-ray observations, the optical counterpart of X1624-490 has not yet been identified. With its high spatial resolution, the Chandra HRC-I is the perfect instrument for, and the only one capable of, directly pinpointing the optical/IR counterpart of X1624-490. This project can be achieved with a minimal amount of observing time (1 ksec) and the result can be applied immediately to already existing IR data.

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