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.
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 555
Mission Week 555 continues the ±50 degree rocking survey profile with a period of two orbits begun in MW553. An updated version of the profile is loaded during a 10 minute freeze observation at the start of MW555, on DOY 017 at 00:20. That profile continues until the end of the mission week.
Due to the position in the Earth's orbit, solar illumination has caused a few of the GBM NaI detectors to reach their operational temperature limits. To reduce the temperatures and preserve the detector lifetimes, these detectors have been powered off. The thermal situation will naturally improve within approximately a week as the solar illumination changes with the orbit. When that occurs all of the NaI detectors will be turned on again. Until then, some data will be unavailable. Triggering continues to be enabled but with reduced efficiency due to fewer operating detectors.
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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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.