Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...266..283i&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 266, no. 1, p. 283-290.
Astronomy and Astrophysics
Astronomy
9
Black Holes (Astronomy), Stellar Spectra, X Ray Binaries, Light Curve, Spaceborne Astronomy, Stellar Mass Accretion, Stellar Models, X Ray Astronomy
Scientific paper
The spectral variability of the X-ray transient GS2023+338 on time scales greater than 250 s during June-August 1989 is investigated. The spectral signatures of this variability include a fluctuating low-energy absorption with a time scale of 1.5 h and a slowly decreasing Compton-reflected component, on top of a power-law spectrum with essentially a constant index, but a variable intensity. The fluctuating low-energy absorption is modeled by a varying column density of cold matter, with a dynamical range of at least a factor of about 40 and ranging up to 4.5 x 10 exp 23 H/sq cm. This variability most probably originated in dynamical processes. It is suggested that the environment of the compact object became progressively more transparent by accretion of the circumstellar matter onto the compact object.
Bleeker Johan A. M.
Gil'Fanov M. R.
in 't Zand J. M. J.
Pan H. C.
Siuniaev R. A.
No associations
LandOfFree
The spectral variability in 2-28 keV of GS2023+338 during its 1989 outburst does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The spectral variability in 2-28 keV of GS2023+338 during its 1989 outburst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The spectral variability in 2-28 keV of GS2023+338 during its 1989 outburst will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1109708