Monitoring the Galactic Bulge Region with the RXTE PCA

Details Monitoring the Galactic Bulge Region with the RXTE PCA Monitoring the Galactic Bulge Region with the RXTE PCA

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..aprx11007m&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

The RXTE PCA has been monitoring the galactic bulge region since February 1999, covering an area of approximately 250 square degrees in the 2--30 keV X-ray band, twice weekly. The survey is sensitive to new sources of <0.5 mCrab in the 2--10 keV band. To date, approximately 55 sources have been detected, both previously known and unknown. Some are transient and some are persistent, and some appear to fall into a separate class of source which are almost continuous emitters of X-rays but are highly variable. One of the sources newly discovered as variable, designated XTE J1710--281, shows X-ray eclipses with a 3.28 hr period, and also X-ray bursts and dips. Thus, it is a low mass X-ray binary system with a neutron star and a ~ 0.3 M_solar secondary. XTE J1710--281 has the shortest orbital period of the known dipper/eclipsers. We will discuss the properties of XTE J1710--281 and compare to the general population of galactic bulge sources.

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