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 636

Mission Week 636 starts with a short continuation of the symmetric +-50 degree rocking profile from the previous mission week. On DOY 219 (Aug 6) at 00:30 UT there is a 10 minute freeze observation during which an updated rocking profile is loaded. The updated profile is used for the remainder of the mission week. Two inertial pointings are scheduled for DOY 223 (Aug 10) at 15:28 UT and 18:38 UT to facilitate Star Tracker CCD dumps. An additional inertial pointing is scheduled for DOY 224 (Aug 11) at 16:51. Note that positive rock angles are south, and negative angles are north.

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Latest News

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Jun 23, 2020

Fermi Cycle-13 GI Selected Programs Announced

The stage-I selection process for the Fermi Cycle-13 Guest Investigator program has been completed. There were a total of 41 new programs selected for stage-I out of 109 proposals submitted. A list of the selected programs, including the PIs, titles and abstracts is available on the FSSC web site.

May 22, 2020

Release of 4FGL-DR2

We are pleased to announce the release of an incremental version (4FGL-DR2, for Data Release 2) of the fourth catalog of LAT sources, based on 10 years of survey data. It contains 5787 sources in the 50 MeV-1 TeV energy range. The catalog is provided as a FITS table, and it is accompanied by 7-bin spectral energy distributions and 1-year light curves as well as a document describing the details of the catalog preparation.
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Apr 13, 2020

NASA Missions Help Reveal the Power of Shock Waves in a Nova Explosion

Unprecedented observations of a nova outburst in 2018 by a trio of satellites, including two NASA missions, have captured the first direct evidence that most of the explosion’s visible light arose from shock waves - abrupt changes of pressure and temperature formed in the explosion debris.
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