Bibcode
Russell, D. M.; Lewis, F.; Roche, P.
Referencia bibliográfica
The Astronomer's Telegram, #2072
Fecha de publicación:
6
2009
Número de citas
2
Número de citas referidas
1
Descripción
The neutron star X-ray transient 4U 1608-52 is often in a state of
outburst (e.g. ATel #1113); the Swift/BAT light curve shows three clear
outburst peaks so far in 2009. The source usually remains in a hard
X-ray state during its outbursts. Here we report an X-ray state
transition to a soft state around MJD 54960-75 (2009-05-09 - 24) and
accompanying optical monitoring observations before and after the
transition.