Fermi Gamma-ray Space Telescope
Fermi's Decade of Gamma-ray Discoveries
Fermi's Decade of Gamma-ray Discoveries

What is Fermi?

General Dynamics C4 Systems - Artist Concept of Fermi The Universe is home to numerous exotic and beautiful phenomena, some of which can generate almost inconceivable amounts of energy. Supermassive black holes, merging neutron stars, streams of hot gas moving close to the speed of light ... these are but a few of the marvels that generate gamma-ray radiation, the most energetic form of radiation, billions of times more energetic than the type of light visible to our eyes. What is happening to produce this much energy? What happens to the surrounding environment near these phenomena? How will studying these energetic objects add to our understanding of the very nature of the Universe and how it behaves?

The Fermi Gamma-ray Space Telescope, formerly GLAST, is opening this high-energy world to exploration and helping us answer these questions. With Fermi, astronomers at long last have a superior tool to study how black holes, notorious for pulling matter in, can accelerate jets of gas outward at fantastic speeds. Physicists are able to study subatomic particles at energies far greater than those seen in ground-based particle accelerators. And cosmologists are gaining valuable information about the birth and early evolution of the Universe.

For this unique endeavor, one that brings together the astrophysics and particle physics communities, NASA has teamed up with the U.S. Department of Energy and institutions in France, Germany, Japan, Italy and Sweden. General Dynamics was chosen to build the spacecraft. Fermi was launched June 11, 2008 at 12:05 pm EDT.

Latest News

Aug 10, 2022

NASA's Fermi Confirms Star Wreck as Source of Extreme Cosmic Particles

Astronomers have long sought the launch sites for some of the highest-energy protons in our galaxy. Now a study using 12 years of data from NASA's Fermi Gamma-ray Space Telescope confirms that one supernova remnant is just such a place.
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Jul 1, 2022

Publication of Improved GRB Localizations from Fermi-GBM

Improved localizations for gamma-ray bursts (GRB) identified with the Fermi Gamma-Ray Burst Monitor (GBM) are now available at Zenodo.org (also linked via the FSSC). They cover the time range spanning the first detection of GRBs by GBM in July 2008 through July 2019, the date when the Fermi GBM Team first implemented its improvements to automated GRB localizations. The improved localizations are more accurate with a lower systematic uncertainty, resulting in a >2x reduction in the 90% localization area for most GRBs. Please note that these localizations may differ slightly from those posted at the FSSC and in the GBM GRB catalog. The corresponding response functions and spectral fits will be updated in the forthcoming GBM catalog. These new localizations benefit both multimessenger and time-domain astrophysics analyses.
DOI: 10.5281/zenodo.6727152

Jun 21, 2022

Fermitools 2.2.0 Released

An updated version (2.2.0) of the Fermitools is now available. This release is primarily aimed at solving problems that have made the Fermitools difficult to build and led to installation problems and lengthy installation times due to dependency resolution and dependency conflicts. These goals were primarily achieved by removing CERN's ROOT package from the Fermitools, which was the source of many of these issues. This should allow future development to proceed more quickly.An updated version (2.2.0) of the Fermitools is now available. This release is primarily aimed at solving problems that have made the Fermitools difficult to build and led to installation problems and lengthy installation times due to dependency resolution and dependency conflicts. These goals were primarily achieved by removing CERN's ROOT package from the Fermitools, which was the source of many of these issues. This should allow future development to proceed more quickly.
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