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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 549

Mission Week 549 starts with a continuation of the +/- 50 degree rock profile from MW 548. On day 340 (Dec 06) at 05:15 there is a 10 minute freeze observation during which a revised +/-50 rock profile is loaded. This continues until day 343 (Dec 09) at 09:24 when a -50 degree only profile is loaded. This continues until the end of the week. Note that positive rock angles are south, and negative angles are north.

» More Timeline Info

Latest News

» Fermi Sky Blog
» Fermi Blog

Nov 29, 2018

NASA's Fermi Traces the History of Starlight Across the Cosmos

Scientists using data from NASA's Fermi Gamma-ray Space Telescope have measured all the starlight produced over 90 percent of the universe's history. The analysis, which examines the gamma-ray output of distant galaxies, estimates the formation rate of stars and provides a reference for future missions that will explore the still-murky early days of stellar evolution.
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Nov 27, 2018

Pass 8 Data for the LAT Available

The FSSC is pleased to announce the availability of updated Pass 8 data for the LAT. These data files (P8R3) have a residual background that is significantly lower than the previous Pass 8 data (P8R2) and introduce a new event class, which is defined by a set of additional cuts on top of the SOURCE selection. See arXiv:1810.11394 for more details about the P8R3 data and LAT Data Products for more information. New IRFs and isotropic templates for use with the P8R3 data have been released with Fermitools 1.0.0.

Nov 1, 2018

GBM Team Releases GSpec 0.9.1

The Fermi Gamma-ray Burst Monitor Team is pleased to announce the release of GSpec 0.9.1, a first beta release for the Python replacement of RMfit, utilizing the community-standard XSPEC for spectral fitting. GSpec is built on top of the GBM Data Tools, which will be delivered with a full API in a future release. To download the package, please visit https://fermi.gsfc.nasa.gov/ssc/data/analysis/gbm.

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