Observations of 4U1700 - 377 with the Sigma telescope

Details Observations of 4U1700 - 377 with the Sigma telescope Observations of 4U1700 - 377 with the Sigma telescope

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aipc..232..346l&link_type=abstract

IN: Gamma-ray line astrophysics; Proceedings of the International Symposium, Paris, France, Dec. 10-13, 1990 (A92-43619 18-90).

Astronomy and Astrophysics

Astrophysics

Crab Nebula, Stellar Flares, Stellar Luminosity, X Ray Binaries, X Ray Telescopes, Binary Stars, Bremsstrahlung, Stellar Spectra, X Ray Sources

Scientific paper

The massive binary X-ray source 4U1700 - 377 was observed three times in 1990 by the Sigma telescope in the energy range 35 KeV to 1.3 MeV. The source, which was detected up to 170 KeV, exhibits a strong flaring activity, reaching the luminosity of the Crab Nebula in the 40-77 KeV energy band during nearly 20 min on September 12. Its spectrum has been found to be of thermal Bremsstrahlung type with a temperature kT roughly 50 KeV.

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