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| term | definition | link |
|---|---|---|
| GALPROP | ||
| GBM | (Gamma-ray Burst Monitor) The GBM is the other instrument on Fermi. It is made of 12 NaI (sodium iodide) and 2 BGO (bismuth germanate) detectors. The GBM detects emission from gamma-ray bursts, solar flares, terrestrial gamma-ray flashes ... | |
| GCN | (Gamma-ray Coordinates Network) | |
| GEANT | ||
| ghosts | Ghosts are events where two particles enter the LAT in a small enough time frame that the LAT considers the interactions a single event. A typical example would be a gamma ray and proton entering the LAT near simultaneously. This caused a fraction of gamma-ray events to be vetoed. This problem was first addressed in Pass7 and substantial improvements have been made in Pass8 to recover gamma-ray data from these ghost events. | |
| GI | (Guest Investigator) | |
| GLAST | (Gamma-ray Large Area Space Telescope) GLAST is the name that Fermi was referred to before it was launched. It is tradition to give NASA missions a different name after launch, as a good-luck superstition. | |
| GlastRelease | ||
| GLEAM | ||
| GRB (group) | (Gamma-Ray Burst) | GRB group page |
| gt_____ | The standard set of software used to analyze LAT data are called the Science Tools. Each individual tool has a specific function. The names all start with "gt", for "GLAST", which was the original pre-launch name of Fermi. | Science Tools references |
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