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- University of BolognaIT68 papers
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9 papers · 1 filter
ASCA detection of the FeK edge in the spectrum of the Seyfert 2 galaxy IRAS 04575-7537: a sign of a complex absorber
C. Vignali, A. Comastri, G. M. Stirpe +5
ASCA X-ray spectral analysis of the Seyfert 2 galaxy IRAS 04575-7537 is presented. The main result is the presence of a significant iron edge at a rest energy of 7.13^+0.21_-0.16 k…
The pulsed light curves of Her X-1 as observed by BeppoSAX
D. Dal Fiume, M. Orlandini, G. Cusumano +8
We report on the timing analysis of the observation of the X-ray binary pulsar Her X-1 performed during the BeppoSAX Science Verification Phase. The observation covered more that t…
The broad-band (0.1-200 keV) spectrum of Her X-1 observed with BeppoSAX
D. Dal Fiume, M. Orlandini, G. Cusumano +8
The X-ray pulsar Her X-1 was observed for more than two orbital cycles near the maximum of the 35 day X-ray intensity cycle by the Narrow Field Instruments on-board the BeppoSAX sa…
The Vela X-1 pulse-averaged spectrum as observed by BeppoSAX
M. Orlandini, D. Dal Fiume, F. Frontera +7
We report on the 20 ksec observation of Vela X-1 performed by BeppoSAX on 1996 July 14 during its Science Verification Phase. We observed the source in two intensity states, charac…
BeppoSAX/PDS Observation of Vela X-1
M. Orlandini, D. Dal Fiume, L. Nicastro +2
Vela X-1 has been observed by the Italian/Dutch X-ray satellite BeppoSAX during its Science Verification Phase. During the ~ 50 ksec observation (orbital phases 0.27-0.34) two diff…
The first X-ray localization of a gamma-ray burst by BeppoSAX and its fast spectral evolution
L. Piro, J. Heise, R. Jager +10
In this paper we present the observations performed by the BeppoSAX Gamma-Ray Burst Monitor (GRBM) and Wide Field Cameras (WFC) of GB960720. We derive a precise localization (3 arc…