Back in June 1991, just before the launch of NASA's Compton Gamma-Ray Observatory
, astronomers knew of gamma rays from exactly one galaxy beyond our own.
Other missions included the Hubble Space Telescope, Compton Gamma-Ray Observatory
and the Chandra X-Ray Observatory.
Gehrels pioneering research and contributions to gamma ray astronomy and leadership of the Compton Gamma-Ray Observatory
(CGRO) and Swift missions to study active galaxies and gamma-ray bursts have earned him the prestigious honor.
ESA's (European Space Agency's) Integral satellite, an orbiting gamma-ray observatory
, recorded the entire event, providing information for what may prove to be one of the most important gamma-ray bursts (GRBs) seen in recent years.
The Swift gamma-ray observatory
, to be launched in 2003, may settle the issue.
GLAST is a next generation high-energy gamma-ray observatory
that employs two instruments to observe celestial gamma-ray sources.
, scheduled for launch next year, may suffer a similar fate.
These new "glasses" are VERITAS, (the Very Energetic Radiation Imaging Telescope Array System), a major new ground-based gamma-ray observatory
, designed to provide an in-depth examination of the universe.
Archived data from the Compton Gamma-Ray Observatory
in the 1990s possibly reveal other hybrid "long-short" bursts, but no follow-up observations are available to confirm this.
The Burst and Transient Source Experiment (BATSE) on the Compton Gamma-Ray Observatory
first discovered TGFs in 1994.