INTEGRAL confirms the brightening of 4U 1724-307

Details INTEGRAL confirms the brightening of 4U 1724-307 INTEGRAL confirms the brightening of 4U 1724-307

Feb 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004atel..241....1b&link_type=abstract

The Astronomer's Telegram, #241

Astronomy and Astrophysics

Astronomy

1

X-Ray, Gamma Ray, Binaries, Neutron Stars, Transients

Scientific paper

During an observation of the Galactic Center Deep Exposure performed between February 17 (07:03 UTC) and February 18 (00:01 UTC), JEM-X on board INTEGRAL detected a bright source at position (J2000) RA=17:27:34 DEC=-30:47.9 (1 arcmin uncertainty) corresponding to 4U 1724-307. The source varies between 50 and 100 mCrab on time scales of hours in both the 3-10 and 10-30 keV bands. Between 3 and 20 keV the photon index is 2.7+/-0.4 and the flux is F(3-20)=8E-10 erg/s/cm2.

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