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Hard X-ray Tail Discovered in the Clocked Burster GS 1826-238
James Rodi, Elisabeth Jourdain, Jean-Pierre Roques
The LMXB NS GS 1826-238 was discovered by Ginga in 1988 September. Due to the presence of quasi-periodicity in the type I X-ray burst rate, the source has been a frequent target of…
First INTEGRAL observations of V404 Cygni during the 2015 outburst : spectral behavior in the 20 - 650 keV energy range
Jean-Pierre Roques, Elisabeth Jourdain, Angela Bazzano +3
In June 2015, the source V404 Cygni (= GS2023+38) underwent an extraordinary outburst. We present the results obtained during the first revolution dedicated to this target by the I…
X-ray spectral evolution of V404 Cygni in the initial phase of the 2015 outburst
Lorenzo Natalucci, Mariateresa Fiocchi, Angela Bazzano +3
The black hole binary GS 2023+338 exhibited an unprecedently bright outburst on June 2015. Since June 17th, the high energy instruments on board INTEGRAL detected an extremely vari…
Long-Term Monitoring of the Black Hole Candidate Swift J1753.5-0127 with INTEGRAL/SPI
James Rodi, Elisabeth Jourdain, Jean-Pierre Roques
The black hole candidate Swift J1753.5-0127 went into outburst in 2005 June. Rather than fade into quiescence as most black-hole-candidate transients do, it has remained in a low h…
The INTEGRAL/SPI view of A0535+26 during the giant outburst of February 2011
Nicola Sartore, Elisabeth Jourdain, Jean-Pierre Roques
A0535+26 is a slowly rotating pulsar accreting from the wind of a massive Be star, and that exhibits two cyclotron absorption lines in its X-ray spectrum, at about 45 and 100 keV,…
The Galactic Al emission map as revealed by INTEGRAL/SPI
Laurent Bouchet, Elisabeth Jourdain, Jean-Pierre Roques
Diffuse emission is often challenging since it is undetectable by most instruments, which are generally dedicated to point-source studies. The Al emission is a good illustra…