No apparent accretion mode changes detected in Cen X-3

Details No apparent accretion mode changes detected in Cen X-3 No apparent accretion mode changes detected in Cen X-3

2011-11-02

arxiv.org/abs/1111.0438v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

4 pages, 6 figures, article is accepted for Astronomy & Astrophysics

Scientific paper

The presence of two distinct spectral states has previously been reported for Cen X-3 on the basis of RXTE/ASM observations. Triggered by this result, we investigated the spectral properties of the source using the larger amount of X-ray data now available with the aim to clarify and interpret the reported behavior. To check the reported results we used the same data set and followed the same analysis procedures as in the work reporting the two spectral states. Additionally, we repeated the analysis using the enlarged data sample including the newest RXTE/ASM observations as well as the data from the MAXI monitor and from the INTEGRAL/JEM-X and ISGRI instruments. We could not confirm the reported presence of the two spectral states in Cen X-3 either in

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