Observations of X-ray transient source GS2023+338 with the TTM coded mask telescope

Details Observations of X-ray transient source GS2023+338 with the TTM coded mask telescope Observations of X-ray transient source GS2023+338 with the TTM coded mask telescope

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26as...97..273p&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 97, no. 1, p. 273-275.

Astronomy and Astrophysics

Astronomy

1

Black Holes (Astronomy), Neutron Stars, X Ray Binaries, X Ray Telescopes, Astronomical Spectroscopy, Imaging Spectrometers, Spaceborne Astronomy, Stellar Mass, X Ray Spectra

Scientific paper

TTM observations in which the bright X-ray transient source GS2023+338 (=V404 Cyg) in the period June-August 1989 are reported. The observed spectral structure can be modeled using a model of a power-law source with a photon index of about 1.5, surrounded by partially ionized material. The observed X-rays consist of a component from the power-law source and those reflected (down-scattered) by the partially ionized material. Varying the clumpy structure or changing the ionization state of the circumstellar matter will cause the low-energy absorption to fluctuate.

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