Transient Gamma-Ray Spectrometer (TGRS) on WIND

The more energetic events in the sky are usually responsible, such as supernovae, neutron stars, and material falling into black holes. Astrophysical sources studied and monitored by TGRS include gamma-ray bursts (GRBs), solar flares, bright galactic transient sources like the recently discovered GRO J1655-40, and steady sources like the Crab and the Galactic Center. TGRS with its high resolution and moderate sensitivity, and KONUS (the other gamma-ray instrument on WIND) with its high sensitivity but lesser resolution ideally complement each other in these observations.

The main objective of TGRS is to perform high resolution measurements of GRB spectra and time histories, with particular emphasis on the search for line features in the energy spectra. As part of an interplanetary network of spacecrafts, KONUS is currently supporting the extremely important deep search for quiescent GRB counterparts in other wavelengths by contributing to the determination of accurate GRB locations from multi-spacecraft timing.

Data is available at the NSSDC CDAWeb (cdaweb.gsfc.nasa.gov/cdaweb/)