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INTEGRAL high energy behaviour of 4U 1812-12
A. Tarana, A. Bazzano, P. Ubertini +5
The low mass X-ray binary system 4U 1812-12 was monitored with the INTEGRAL observatory in the period 2003-2004 and with BeppoSAX on April 20, 2000. We report here on the spectral…
State transition and flaring activity of IGR J17464-3213/H1743-322 with SPI/INTEGRAL telescope
A. Joinet, E. Jourdain, J. Malzac +4
IGR J17464-3213, already known as the HEAO-1 transient source H1743-322, has been detected during a state transition by the SPI/INTEGRAL telescope. We describe the spectral evoluti…
Detection and analysis of a new INTEGRAL hard X-ray transient, IGR J17285-2922
E. J. Barlow, A. J. Bird, D. J. Clark +10
We present the transient nature of INTEGRAL source IGR J17285-2922, identified from a single period of activity during an IBIS/ISGRI Galactic Centre Deep Exposure in September 2003…
Discovery of the INTEGRAL X/Gamma-ray transient IGR J00291+5934: a Comptonised accreting ms pulsar ?
S. E. Shaw, N. Mowlavi, J. Rodriguez +8
We report the discovery of a high-energy transient with the IBIS/ISGRI detector on board the INTEGRAL observatory. The source, namely IGR J00291+5934, was first detected on 2nd Dec…
INTEGRAL/IBIS search for e-e+ annihilation radiation from the Galactic Center Region
G. De Cesare, A. Bazzano, F. Capitanio +5
Electron-positron annihilation radiation from the Galactic Center region has been detected since the seventies, but its astrophysical origin is still a topic of a scientific debate…