BATSE


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BATSE

abbrev. for burst and transient source experiment. See Compton Gamma Ray Observatory.
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But the BATSE team made the surprising discovery that GRBs seem to come equally from all directions in space.
BATSE can not pinpoint a source, but information from other satellites and telescopes aimed at that region of the sky have begun pouring in.
State University and his colleagues calculate that if BATSE eventually records another 2,000 bursts that are evenly distributed, the halo required to match the data would be so large and uniform that scientists would have to abandon the halo theory.
Although Swift's Burst Alert Telescope can't watch the whole sky, it is five times more sensitive than the BATSE detectors on the Compton Gamma Ray Observatory or the FREGATE instrument on HETE 2.
In an articlein the July 1 ASTROPHYSICAL JOURNAL -- written before GRO's launch -- he and his co-workers anticipated the new BATSE results and suggested that stars in distant galaxies might account for the distribution of these mysterious gamma-ray outbursts.
Over the next six months, says Fishman, BATSE may detect enough bursts to indicate their origin.
Editor's Note: The writer, working at NASA's Marshall Space Flight Center on contract with University of Alabama at Huntsville, studied black-hole transients and soft gamma-ray repeaters with Compton's BATSE instrument team.
In this paper, we present a temporal and spectral analysis of a subset of BATSE GRBs with smooth extended emission tails to search for signatures of the "high-energy afterglow," i.
It carried four instruments: the BATSE gamma-ray burst detector, which disproved earlier theories that these energetic blasts come from our own galaxy; the OSSE and Comptel medium-energy gamma-ray telescopes, which studied emissions in the Milky Way and from nearby active galaxy nuclei; and the EGRET high-energy detector, which discovered a range of new sources, including gamma-ray quasars.
Compton's BATSE instrument, many assumed, would simply confirm this scenario, and GRBs would be relegated to an insignificant place in high-energy astrophysics research.
GBM will be only a third as sensitive as Compton's BATSE burst detector.