An INTEGRAL Open Time Observation of the HMXRB 4U 1700-377

Details An INTEGRAL Open Time Observation of the HMXRB 4U 1700-377 An INTEGRAL Open Time Observation of the HMXRB 4U 1700-377

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.552..361o&link_type=abstract

Proceedings of the 5th INTEGRAL Workshop on the INTEGRAL Universe (ESA SP-552). 16-20 February 2004, Munich, Germany. Scientific

Computer Science

1

Scientific paper

We present preliminary results of an INTEGRAL Open Time observation of the high mass X-ray bi- nary 4U 1700-377. The source was located in the field of view of a TOO observation of the black hole candidate H 1743-322 (Parmar et al., 2003). A ther- mal Comptonization model gives a good fit to the spectra. The spectral shape of 4U 1700-377 did not change much despite large changes in the flux of the source, up to a factor 5. However, low-level spectral variability is present, although there is no indication that it is correlated with the hard X-ray flux, or with the phase of the binary system. Key words: High mass X-ray binaries; 4U 1700-377.

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