2 papers
astro-ph2005
Long-term optical/IR variability of the Be/X-ray binary LS V +44 17/RX J0440.9+4431
P. Reig, I. Negueruela, J. Fabregat +2
We present the first long-term study of the optical counterpart to the X-ray pulsar LS V +44 17/RX J0440.9+4431. The results of our photometric and spectroscopic analysis show that…
astro-ph2004
Discovery of the optical counterpart to the X-ray pulsar SAX J2103.5+4545
P. Reig, I. Negueruela, J. Fabregat +3
We report optical and infrared photometric and spectroscopic observations that identify the counterpart to the 358.6-s X-ray transient pulsar SAX J2103.5+4545 with a moderately red…