Fermi Gamma-ray Space Telescope

The Fermi Science Support Center (FSSC) runs the guest investigator program, creates and maintains the mission time line, provides analysis tools for the scientific community, and archives and serves the Fermi data. This web site is the portal to Fermi for all guest investigators.

This view shows the entire sky at energies greater than 1 GeV based on five years of data from the LAT instrument on NASA's Fermi Gamma-ray Space Telescope. Brighter colors indicate brighter gamma-ray sources.
This view shows the entire sky at energies greater than 1 GeV based on five years of data from the LAT
instrument on NASA's Fermi Gamma-ray Space Telescope. Brighter colors indicate brighter gamma-ray sources.
Image Credit: NASA/DOE/Fermi LAT Collaboration

Look into the "Resources" section for finding schedules, publications, useful links etc. The "Proposals" section is where you will be able to find the relevant information and tools to prepare and submit proposals for guest investigator projects. At "Data" you will be able to access the Fermi databases and find the software to analyse them. Address all questions and requests to the helpdesk in "Help".

Fermi Observations for MW 694

Mission week 694 starts with a continuation of the modified sine rocking profile from the previous week. On day of year 259 (2021-09-16 ) at 00:44 there is a 10 minute freeze observation during which an updated modified sine profile is loaded. This profile continues until 16:37 when there is a 10 minute freeze observation during which an asymmetric +50/-60 deg. profile is loaded. This profile continues until DOY 263 (2021-09-20) at 03:07 where there is a 10 minute freeze observation during which a symmetric +/- 50 deg. profile is loaded. This profile continues until the end of the week. Note that positive rock angles are south, and negative angles are north.

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Latest News

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Aug 06, 2021

Dr. Ke Fang Receives the 2021 Shakti P. Duggal Award

Congratulations to Dr. Ke Fang, professor at the University of Wisconsin-Madison, on the 2021 Shakti P. Duggal Award presented by the International Union of Pure and Applied Physics (IUPAP). Fang’s research focuses on understanding the universe through its energetic messengers, including ultra-high-energy cosmic rays, gamma rays, and high-energy neutrinos, with HAWC, Fermi, and IceCube.
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Jul 26, 2021

NASA's Fermi Spots a Supernova's 'Fizzled' Gamma-ray Burst

On Aug. 26, 2020, NASA's Fermi Gamma-ray Space Telescope detected a pulse of high-energy radiation that had been racing toward Earth for nearly half the present age of the universe. Lasting only about a second, it turned out to be one for the record books - the shortest gamma-ray burst (GRB) caused by the death of a massive star ever seen.
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Jul 12, 2021

GBM Processing Delays

There was a hardware failure at the Fermi GBM Science Operations Center and repairs are ongoing. In the meantime, the processing of the Fermi GBM data to FITS files is delayed. This includes CTTE, CTIME, CSPEC, POSHIST and location contour maps. When the repairs are completed, the backlog of data will be processed and posted to the Fermi Science Support Center. GBM Burst Alerts continue to be distributed through the GCN during this outage.

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