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| term | definition | link |
|---|---|---|
| TDRSS | (Tracking and Data Relay Satellite System). TDRSS is an array of satellites in geosynchronous orbit. These satellites relay data from missions like Fermi to ground stations. | |
| TEM | (Trigger Event Module) | |
| TGFs | (terrestrial gamma-ray flashes) TGFs are very short (less than 1 millisecond) flashes of low-energy gamma rays produced near thunderstorms on Earth. The large electric fields of thunderstorms accelerate electrons to high enough energies that they can produce gamma rays as they interact with air molecules. | |
| theta | ||
| ToO | (Target of Opportunity) | more info |
| transient | ||
| transient (event class) | ||
| TRK | (Tracker) The Tracker is a part of the LAT whose purpose is twofold: 1) To convert gamma rays into electron-positron pairs, and 2) To track these pairs of charged particles through the instrument in order to figure out where the original gamma ray came from. The Tracker is made of alternating layers of tungsten foils (to convert the gamma rays) and silicon strip detectors (to track the pairs), arranged in 64 columns (8 by 8). | §2.2.1 |
| Trunc64 | ||
| TS | (test statistic) |
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