2006/08/05 by U. Kiziloglu, Ü. Kızıloğlu, A. Baykal +2 · 3 citations
Earth and Planetary Sciences · Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Earth Systems and Cosmic Evolution #Flux (metallurgy) #Light curve #Modulation (music) #Neutron star #Optical depth #Optical radiation #Time lag #Transient (computer programming) #astro-ph
paper · pdf · doi:10.1002/asna.200610647
published in Astronomische Nachrichten 328(2), 142-145 (Wiley) · to be publsihed on AN
arxiv created 2006/08/05 · openalex publication_date 2007/02/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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)