Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-08-05
Astronomy and Astrophysics
Astrophysics
to be publsihed on AN
Scientific paper
10.1002/asna.200610647
ROTSE-IIId observations of the Be/X-ray transient system KS 1947+300 obtained between September 2004 and December 2005 make it possible to study the correlation between optical and X-ray activity. The optical outburst of 0.1 mag was accompanied by an increase in X-ray flux in 2004 observations. Strong correlation between the optical and X-ray light curves suggests that neutron star directly accretes from the outflowing material of Be star. The nearly zero time lag between X-ray and optical light curves suggests a heating of the disk of Be star by X-rays. No optical brightening and X-ray enhancement was seen in 2005 observations. There is no indication of the orbital modulation in the optical light curve.
Baykal Ahmet
Kiziloglu Nilgun
Kiziloglu Ue.
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