Fermi Cycle 19 call for proposals released. Proposal deadline January 29, 2026.
A refreshed version of the Fermi website (fermi.gsfc.nasa.gov) went live yesterday. The update enhances navigation, introduces new content, retires outdated pages, and brings the site into alignment with current U.S. government and HEASARC design standards.
If you notice any issues, missing material, or have suggestions for further improvements, please share your feedback using the Google form below. We plan to release another update in February 2026 informed by the community response.
+ https://forms.gle/4AQaPBUoRwzApNcz8
An updated version (2.4.0) of the Fermitools is now available. Improvements focus on resolving issues with outdated dependencies and improving compatibility (e.g., Astropy). This release also includes a range of bug fixes, enhancements to backend code, and updates to the build system.
+ Release Notes
The Fermi Cycle 18 solicitation was amended on February 5 to clarify that the page limit for the Science/Technical/Management section of Phase-1 proposals is four pages for Regular proposals and six pages for Large proposals. These page limits include figures but not references. This is a change from Cycle 17 when the 4- and 6-page limits included references. As a reminder, the solicitation was amended on January 17 to change the proposal due date to March 5, 2025. Full details of the Fermi Cycle 18 solicitation can be found in Roses Appendix D.6
Fermi Observations for MW 915
Mission Week 915 begins with a continuation of the asymmetric -50/+60 deg. profile from the previous week. Then, on DOY 345 (2025-12-11) at 01:36 UT a 10-minute freeze observation occurs during which an asymmetric -50/+60 deg. profile is loaded. Next, on DOY 345 (2025-12-11) at 22:01 UT a 10-minute freeze observation occurs during which a symmetric +/-50 deg. profile is loaded. This profile continues until the end of the mission week. The survey repeat period DECREASED from 5670s to 5669s. Note that positive rock angles are south, and negative rock angles are north.
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 Fermi data.
Guest Investigator Program - Details of the Cycle 19 Call for Proposals, deadline Jan 29 2026.
Targets of Opportunity (ToO) - How to apply for a ToO.
New Users - Overview of Fermi analysis basics.
Data & Products - Download Fermi data and access data products such as catalogs.
Analysis Tools - Tools from the FSSC and the user community.
Analysis Threads - Step-by-step guides to various types of analyses that you can do with Fermi data.
Multiwavelength Coordination and Existing Data - Links to related datasets and coordination resources.
The Observatory - Key information about Fermi and its capabilities required for analysis.
Research Highlights - Major Fermi research areas and links to publications and press releases.
Transient Science - Resources for transient and time domain science.
Fermi Users' Group - External advisory body that provides input and perspectives from relevant science communities and members to the Fermi Project.
Fermi Summer School - Annual summer school aimed at graduate students and post-doctoral researchers.
Fermi Meetings - Links to summer schools, symposia, and workshops.
