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The INTEGRAL mission
Sunyaev, R.; Mas-Hesse, J. M.; Gehrels, N. +17 more
The ESA observatory INTEGRAL (International Gamma-Ray Astrophysics Laboratory) is dedicated to the fine spectroscopy (2.5 keV FWHM @ 1 MeV) and fine imaging (angular resolution: 12 arcmin FWHM) of celestial gamma-ray sources in the energy range 15 keV to 10 MeV with concurrent source monitoring in the X-ray (3-35 keV) and optical (V-band, 550 nm) …
IBIS: The Imager on-board INTEGRAL
Di Cocco, G.; Vigroux, L.; Bird, A. J. +17 more
The IBIS telescope is the high angular resolution gamma-ray imager on-board the INTEGRAL Observatory, successfully launched from Baikonur (Kazakhstan) the 17{th} of October 2002. This medium size ESA project, planned for a 2 year mission with possible extension to 5, is devoted to the observation of the gamma-ray sky in the energy range from 3 keV…
ISGRI: The INTEGRAL Soft Gamma-Ray Imager
Laurent, P.; Dzitko, H.; Lebrun, F. +21 more
For the first time in the history of high energy astronomy, a large CdTe gamma-ray camera is operating in space. ISGRI is the low-energy camera of the IBIS telescope on board the INTEGRAL satellite. This paper details its design and its in-flight behavior and performances. Having a sensitive area of 2621 cm2 with a spatial resolution of…
SPI: The spectrometer aboard INTEGRAL
Boggs, S.; Knödlseder, J.; von Kienlin, A. +25 more
SPI is a high spectral resolution gamma-ray telescope on board the ESA mission INTEGRAL (International Gamma Ray Astrophysics Laboratory). It consists of an array of 19 closely packed germanium detectors surrounded by an active anticoincidence shield of BGO. The imaging capabilities of the instrument are obtained with a tungsten coded aperture mas…
JEM-X: The X-ray monitor aboard INTEGRAL
Andersson, H.; Frontera, F.; Costa, E. +52 more
The JEM-X monitor provides X-ray spectra and imaging with arcminute angular resolution in the 3 to 35 keV band. The good angular resolution and the low energy response of JEM-X plays an important role in the identification of gamma ray sources and in the analysis and scientific interpretation of the combined X-ray and gamma ray data. JEM-X is a co…
The INTEGRAL Science Data Centre (ISDC)
Strong, A. W.; Mereghetti, S.; Paltani, S. +17 more
The INTEGRAL Science Data Centre (ISDC) provides the INTEGRAL data and means to analyse them to the scientific community. The ISDC runs a gamma ray burst alert system that provides the position of gamma ray bursts on the sky within seconds to the community. It operates a quick-look analysis of the data within few hours that detects new and unexpec…
Early SPI/INTEGRAL measurements of 511 keV line emission from the 4th quadrant of the Galaxy
Strong, A. W.; Gehrels, N.; Knödlseder, J. +18 more
We report the first measurements of the 511 keV line emission from the Galactic Centre (GC) region performed with the spectrometer SPI on the space observatory INTEGRAL (International Gamma-Ray Astrophysics Laboratory). Taking into account the range of spatial distribution models which are consistent with the data, we derive a flux of 9.9+4.7…
The INTEGRAL/IBIS scientific data analysis
Foschini, L.; David, P.; Bird, A. J. +6 more
The gamma-ray astronomical observatory INTEGRAL, succesfully launched on 17th October 2002, carries two large gamma-ray telescopes. One of them is the coded-mask imaging gamma-ray telescope onboard the INTEGRAL satellite (IBIS) which provides high-resolution (~12') sky images of 29degx29deg in the energy range from 15 keV to …
Early SPI/INTEGRAL constraints on the morphology of the 511 keV line emission in the 4th galactic quadrant
Knödlseder, J.; Cordier, B.; Schönfelder, V. +11 more
We provide first constraints on the morphology of the 511 keV line emission from the galactic centre region on basis of data taken with the spectrometer SPI on the INTEGRAL gamma-ray observatory. The data suggest an azimuthally symmetric galactic bulge component with FWHM of ~ 9o with a 2sigma uncertainty range covering 6o-18…
OMC: An Optical Monitoring Camera for INTEGRAL. Instrument description and performance
Hanlon, L.; McBreen, B.; Mas-Hesse, J. M. +48 more
The Optical Monitoring Camera (OMC) will observe the optical emission from the prime targets of the gamma-ray instruments onboard the ESA mission INTEGRAL, with the support of the JEM-X monitor in the X-ray domain. This capability will provide invaluable diagnostic information on the nature and the physics of the sources over a broad wavelength ra…