200 citations · 2.2k across the 59 of their papers we have counts for
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The massive neutron star or low-mass black hole in 2S0921-630
T. Shahbaz, J. Casares, C. Watson +4
We report on optical spectroscopy of the eclipsing Halo LMXB 2S0921-630, that reveals the absorption line radial velocity curve of the K0III secondary star with a semi-amplitude K_…
Indirect evidence for an active radio pulsar in the quiescent state of the transient ms pulsar SAX J1808.4-3658
S. Campana, P. D'Avanzo, J. Casares +6
Millisecond radio pulsars are neutron stars that have been spun-up by the transfer of angular momentum during the low-mass X-ray binary phase. The transition from an accretion-powe…
Evidence for a Black Hole in the X-ray transient GS 1354-64 (=BW Cir)
J. Casares, C. Zurita, T. Shahbaz +2
We present the first radial velocity curve of the companion star to BW Cir which demonstrates the presence of a black hole in this X-ray transient which recorded outbursts in 1987…
Optical polarimetric observations of the microquasar LS 5039
J. A. Combi, S. A. Cellone, J. Marti +3
We present the first optical polarimetric observations of the runaway microquasar LS 5039. Our results reveal the presence of a large amount (~5%) of polarized emission towards thi…
Long-term optical/infrared variability in the quiescent X-ray transient V404 Cyg
C. Zurita, J. Casares, R. I. Hynes +3
We present the results of optical and infrared photometry of the quiescent X-ray transient V404 Cyg during the period 1992-2003. The ellipsoidal modulations extracted from the most…
Chemical Abundances in the Secondary Star in the Black Hole Binary A0620-00
Jonay I. Gonzalez-Hernandez, R. Rebolo, G. Israelian +3
Using a high resolution spectrum of the secondary star in the black hole binary A0620-00, we have derived the stellar parameters and veiling caused by the accretion disk in a consi…