Optical observations of the Be/X‐ray transient system KS 1947+300 |
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| Authors: | Ü K&#x;z&#x;lolu A Baykal N K&#x;z&#x;lolu |
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| Abstract: | 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 of the X‐ray flux in the 2004 observations. A strong correlation between the optical and X‐ray light curves suggests that the neutron star directly accretes from the outflowing material of the 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 the 2005 observations. There is no indication of an orbital modulation in the optical light curve. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) |
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| Keywords: | stars: individual (KS1947+300) stars: circumstellar matter stars: emission line Be pulsars: individual (GRO J1948+32) |
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