First detection of an X-ray burst and a one hour intensity dip in 4U1323-62

Details First detection of an X-ray burst and a one hour intensity dip in 4U1323-62 First detection of an X-ray burst and a one hour intensity dip in 4U1323-62

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ssrv...40..287v&link_type=abstract

(ESA, ESLAB Symposium on X-Ray Astronomy in the EXOSAT Era, 18th, The Hague, Netherlands, Nov. 5-9, 1984) Space Science Reviews

Astronomy and Astrophysics

Astronomy

9

Flare Stars, Neutron Stars, X Ray Binaries, Bursts, Exosat Satellite, Spectrum Analysis

Scientific paper

The results of a 1.4 x 10 to the 4th s observation of the region of 4U 1323-62 with the Exosat ME are reported. The source has a flux of 7-8 x 10 to the -11th erg/sq cm s (2-10 keV) and a power-law spectrum with alpha between 1.1 and 1.8. During the observation, the source showed a symmetric 60 percent dip in its X-ray flux of about 1 hr. The spectrum hardens during the dip. Inside the dip an X-ray burst with a 2-10 keV peak flux of about 7 x 10 to the -10th erg/sq cm s was observed. The burst spectrum is black-body, and shows evidence of cooling during the burst decay. The discovery of a burst from 4U 1323-62 settles the classification of the source; the observation of a dip suggests that it may be possible to measure its orbital period in the near future.

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