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The Be/X-ray transient 4U 0115+63/V635 Cas I. A consistent model
I. Negueruela, A. T. Okazaki
We present photometry and high SNR spectroscopy in the classification region of V635 Cas, the optical counterpart to the transient X-ray pulsator 4U 0115+63, taken at a time when t…
The X-ray outbursts of Be/X-ray transients
Ignacio Negueruela, Atsuo T. Okazaki
We present a new scenario for the behaviour of Be/X-ray binaries based on long-term multiwavelength monitoring and the decretion disc model. The circumstellar discs of the primarie…
BeppoSAX discovery of a new Seyfert 2 galaxy: 1SAXJ2234.8-2541
A. Malizia, L. Bassani, I. Negueruela
In the present work we report the BeppoSAX serendipitous discovery of the type 2 AGN 1SAXJ2234.8-2541 in the MECS field of view when pointing at the Seyfert 2 galaxy NGC7314. The s…
Correlated V/R and IR photometric variations in the Be/X-ray binary LS I +61 235/RX J0146.9+6121
P. Reig, I. Negueruela, M. J. Coe +3
We report on the long-term variability of the Be/X-ray binary LS I +61 235/RX J0146.9+6121. New optical spectroscopic and infrared photometric observations confirm the presence of…
BeppoSAX observations of AM Herculis in intermediate and high states
G. Matt, D. de Martino, B. T. Gaensicke +5
Temporal and spectral analyses from BeppoSAX observations of AM Her performed during both an intermediate and a high state are presented and discussed. Optical observations taken a…