Physics of the Cosmos
Exploring fundamental questions regarding the physical forces of the universe

Due to the lapse in federal government funding, NASA is not updating this website. We sincerely regret this inconvenience.

Program News and Announcements

7 July 2025

IXPE Cycle 3 Pre-Proposal Workshop – First Announcement

We are pleased to send out this first announcement for a pre-proposal workshop in preparation for Cycle 3 of the General Observer (GO) program for the Imaging X-ray Polarimetry Explorer (IXPE).

IXPE provides unique and powerful X-ray polarization capabilities and has been providing crucial insights into our understanding of X-ray production and the geometry of multiple classes of objects such as neutron stars and pulsar wind nebulae, as well as stellar and supermassive black holes, among others. Overall, IXPE provides simultaneous imaging, spectral, timing, and polarization data for 2-8 keV X-rays.

The workshop will be held virtually this summer; the date and time will be announced shortly following the release of the call for proposals through NASA's Research Opportunities in Space and Earth Science (ROSES) 2025. This session is presented to update the community on opportunities to propose for the upcoming Cycle 3 IXPE GO program, highlighting any changes from previous cycles. A description of the IXPE mission and a summary of its major scientific achievements will be presented. Opportunities for participation through the General Observer Program, which supports a broad range of opportunities, will be described in detail in an interactive forum. Presentations on user support services, data analysis and software tools, catalogs and other online resources will also be included, followed by ample time for general questions and discussion. More information can be found on the GO program website.

Registration is open to everyone. The meeting link will be sent via e-mail a day before the start of the meeting to all registered participants. There is no fee to participate in the workshop. To receive the link for the workshop, please register your interest by filling out this Google form.

News
22 September 2025
Final Reminder: PhysCOS Second Early Career Workshop on 23-25 September 2025
»  Details
Astronomy and Astrophysics Advisory Committee Meeting on 26 September 2025
»  Details
4th TDAMM Workshop Registration Deadline Extended to 27 September 2025
»  Details
Call for 2026A Proposals for NASA Infrared Telescope Facility; Deadline 1 October 2025
»  Details
JWST Call for Proposals for Cycle 5; Deadline 15 October 2025
»  Details