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Correlated X-ray spectral and timing variability of the Be/X-ray binary V0332+53/BQ Cam during a type II outburst
P. Reig, S. Martinez-Nunez, V. Reglero
We have used INTEGRAL & RXTE data to investigate the timing properties of the source in correlation with its spectral states as defined by different positions in the colour-colour…
Wind accretion in the massive X-ray binary 4U 2206+54: abnormally slow wind and a moderately eccentric orbit
M. Ribo, I. Negueruela, P. Blay +2
Massive X-ray binaries are usually classified depending on the properties of the donor star in classical, supergiant and Be X-ray binaries. The massive X-ray binary 4U 2206+54 does…
Multiwavelength monitoring of BD+53 2790, the optical counterpart to 4U~2206+54
P. Blay, I. Negueruela, P. Reig +4
We present the results of our long-term monitoring of BD+53 2790, the optical counterpart to the X-ray source 4U~2206+54. Unlike previous studies that classify the source as a Be/X…
Identification of the optical counterparts of high-mass X-ray binaries through optical photometry and spectroscopy
P. Reig, I. Negueruela, G. Papamastorakis +2
We present the results of our search for optical counterparts to high-mass X-ray transient sources discovered by various X-ray missions. We obtained CCD images of the X-ray fields…