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X-ray emission in the direction of the SNR G318.2+0.1
F. Bocchino, A. N. Parmar, S. Mereghetti +3
We report the discovery of three X-ray sources within the radio shell G318.2+0.1, one of which may be extended. Two of the sources were detected during the \sax Galactic Plane Surv…
Broad band spectrum of Cygnus X-1 in two spectral states with BeppoSAX
F. Frontera, E. Palazzi, A. A. Zdziarski +13
We report on the 0.5--200 keV spectral properties of Cyg X-1 observed at different epochs with the Narrow Field Instruments of the BeppoSAX satellite. The source was in its soft st…
ASCA and BeppoSAX observations of the peculiar X-ray source 4U1700+24/HD154791
D. Dal Fiume, N. Masetti, C. Bartolini +9
The X-ray source 4U1700+24/HD154791 is one of the few galactic sources whose counterpart is an evolved M star. In X-rays the source shows extreme erratic variability and a complex…
Cyclotron lines in X-ray pulsars as a probe of relativistic plasmas in superstrong magnetic fields
D. Dal Fiume, Filippo Frontera, Nicola Masetti +7
The systematic search for the presence of cyclotron lines in the spectra of accreting X-ray pulsars is being carried on with the BeppoSAX satellite since the beginning of the missi…
X-ray/optical observations of XTE J0421+560/CI Cam in quiescence
M. Orlandini, A. N. Parmar, F. Frontera +8
We report on a BeppoSAX observation of the transient X-ray source XTE J0421+560 during quiescence performed ~150 days after the 1998 April outburst. The source had an unabsorbed 0.…
Broad-band BeppoSAX observation of the low-mass X-ray binary X1822-371
A. N. Parmar, T. Oosterbroek, S. Del Sordo +4
Results of a 1997 September 9-10 BeppoSAX observation of the 5.57 hr low-mass X-ray binary (LMXRB) X1822-371 are presented. The 0.3-40 keV spectrum is unusually complex and cannot…