Precise Localizations of LMXBs with Chandra: The ``Big Dipper'' X1624-490

Details Precise Localizations of LMXBs with Chandra: The ``Big Dipper'' X1624-490 Precise Localizations of LMXBs with Chandra: The ``Big Dipper'' X1624-490

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002xrb..confe..49w&link_type=abstract

X-ray Binaries in the Chandra and XMM-Newton Era (with an emphasis on Targets of Opportunity), Abstracts of the conference held

Physics

High Angular Resolution Observations

Scientific paper

One major obstacle in the study of low mass X-ray binaries (LMXBs) is the difficulty in identifying their optical/IR counterparts in the heavily extincted and crowded regions of the Galactic plane. Chandra, with its spatial resolution of < 1", is providing major advances for this particular problem. We will present a precise position for the dipping LMXB X1624-490 obtained with the Chandra HRC. X1624-490 stands out among the currently known dipping sources: its persistent emission is the brightest, its 20.88 hour orbital period the longest and its dip profiles the most erratic in its class. We will also report on the search for the optical/IR counterpart using our precise Chandra localization.

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