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Fermi LAT Simulator

This interactive area contains a simulator for the Fermi Gamma-Ray Space Telescope's (formerly GLAST) main instrument, the Large Area Telescope (LAT), a next-generation astronomical instrument which merges astrophysics and particle physics. This simulator will take you inside the world's most sophisticated gamma-ray detector, explaining how astronomers will use it to peer into the high-energy Universe of gamma-ray astronomy.

The Fermi Gamma-Ray Space Telescope is an international and multi-agency satellite mission launched in June 2008. It is studying the cosmos, looking at nature's most energetic objects, including exploding stars, black holes, and super-magnetic pulsars.

It is doing this using two instruments: the Large Area Telescope (LAT) and the Fermi Burst Monitor (GBM). Each is designed to observe gamma rays: the highest energy form of light. A given gamma ray can have millions or even billions of times as much energy as the light we see with our eyes. Only the most violent and energetic objects in the Universe can produce them.

The GBM is looking for gamma-ray bursts; incredible blasts of gamma rays that occur daily in the Universe, thought to signal the births of black holes. For more information about the GBM, please see NASA's GBM page. You can find out more about gamma-ray bursts at the Swift mission website.

The LAT is a major advance over previous high-energy gamma-ray telescopes. It is designed to produce images of celestial gamma-ray sources with unprecedented resolution and sensitivity. It can detect gamma rays over a very wide energy range, which is giving astronomers new insight into the high-energy Universe. The simulator you will use here is based on the LAT, and more information is on LAT Instrument page.

Fermi Gamma-ray Space Telescope - Education and Public Outreach - LAT Simulator