Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...20516005h&link_type=abstract
American Astronomical Society Meeting 205, #160.05; Bulletin of the American Astronomical Society, Vol. 36, p.1612
Astronomy and Astrophysics
Astronomy
Scientific paper
The BATSE experiment aboard CGRO monitored the whole sky in the 20 keV - 2 MeV energy band continuously for 9 years, from April 1991 until June 2000. Application of the Earth Occultation technique and a Maximum-Likelihood imaging method have produced all-sky significance and flux maps with ˜mCrab sensitivity. In addition, a non-linear CLEAN algorithm is applied to remove artefacts systematic of the Earth Occultation technique. The latest all-sky source maps and a summary of source detections are presented.
The INTEGRAL mission was launched October 17th 2002. The ISGRI detector of the IBIS imaging telescope is ideally suited to the detection and localization of soft Gamma-ray sources in the 15 keV - 1 MeV band. IBIS has a field of view of ˜30 degrees and an angular resolution of 12'. All-sky mosaics are generated by the summation of individual science window images and can be further summed across energy bands. Results are presented based on data from the first 2 years of operations.
The long timescale of data from the BATSE experiment combined and contrasted with the vastly superior imaging and sensitivity capabilities of ISGRI present a wealth of data to explore the properties of sources across the whole sky in an energy regime which was last investigated by the HEAO 1 A4 experiment in 1979.
Barlow E. J.
Bird Andrew J.
Dean Anthony J.
Hill Adam B.
Shaw Simon E.
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