BeppoSAX observation of the peculiar X-ray source 4U1700+24
D. Dal Fiume, N. Masetti, M. Orlandini, F. Frontera
S. Del Sordo, A. Santangelo, A. Segreto
C. Bartolini, A. Guarnieri, A. Piccioni
Abstract
The X-ray source 4U1700+24/HD154791 is one of the few galactic sources
whose counterpart is an evolved M star (Garcia et al. 1983, Dal Fiume et
al. 1990, Polcaro et al. 1999).
In X-rays the source shows extreme erratic variability and a complex and
variable spectrum. While this strongly suggests accretion onto a compact
object, no clear diagnosis of binarity was done up to now.
We report on a BeppoSAX broad band observation of this source and on
ground optical observations from the Loiano telescope.
File translated from TEX by TTH, version 2.32.
On 16 Jul 1999, 09:19.