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Unveiling the high energy tail of 1E 1740.7-2942 with INTEGRAL
L. Bouchet, M. Del Santo, E. Jourdain +4
The microquasar 1E 1740.7-2942 is observed with Integral since Spring 2003. Here, we report on the source high energy behaviour by using the first three years of data collected wit…
GRS 1915+105 : High-energy Insights with SPI/INTEGRAL
Robert Droulans, Elisabeth Jourdain
We report on results of two years of INTEGRAL/SPI monitoring of the Galactic microquasar GRS 1915+105. From September 2004 to May 2006, the source has been observed twenty times wi…
INTEGRAL Cross-calibration Status: Crab observations between 3 keV and 1 MeV
E. Jourdain, D. Gotz, N. J. Westergaard +2
We present results of Crab observations by the INTEGRAL instruments. A simultaneous fit allows us to demonstrate that INTEGRAL provides reliable spectra over its wide energy range.
Spectral variability of GX 339-4 in a hard-to-soft state transition
M. Del Santo, J. Malzac, E. Jourdain +2
We report on INTEGRAL observations of the bright black-hole transient GX 339-4 performed during the period August-September 2004. Our data cover three different spectral states, na…
INTEGRAL SPI All-Sky View in Soft Gamma Rays: Study of Point Source and Galactic Diffuse Emissions
L. Bouchet, E. Jourdain, J. P. Roques +4
We have processed the data accumulated with INTEGRAL SPI during 4 years (~ 51 Ms) to study the Galactic ``diffuse'' emission morphology in the 20 keV to 8 MeV energy range. To achi…
INTEGRAL observations of the cosmic X-ray background in the 5-100 keV range via occultation by the Earth
E. Churazov, R. Sunyaev, M. Revnivtsev +32
We study the spectrum of the cosmic X-ray background (CXB) in energy range 5-100 keV. Early in 2006 the INTEGRAL observatory performed a series of four 30ksec observations wi…