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

PhysCOS TDAMM Initiative

Animation: Doomed Neutron Stars Create Blast of Light and Gravitational Waves. Credit: NASA Goddard Space Flight Center / CI Lab

In response to the Astro2020 decadal report’s recommendation that time-domain and multi-messenger (TDAMM) astrophysics is the highest-priority sustaining activity in space, the NASA Astrophysics Division directed the Physics of the Cosmos Program Office to:

  1. Organize or support TDAMM Workshops at regular intervals,
  2. Coordinate with the relevant community-driven Science Interest Groups and Science Analysis Groups,
  3. Conduct a three-phase TDAMM Study investigating ways to improve coordination within the NASA fleet (Phase 1), with U.S. ground-based observatories (Phase 2), and internationally (Phase 3), and
  4. Recommend implementation strategies for enabling TDAMM science.

The Astrophysics Cross-Observatory Science Support (ACROSS) pilot is an outcome of the TDAMM Study, which identified needs for:

  1. A web portal providing access to open-source software and data systems that facilitate cross-observatory workflows,
  2. A help desk to provide subject-matter expertise and facilitate coordination, and
  3. An open science community grant program to incentivize innovation.

The PhysCOS TDAMM Initiative executes the above tasks on behalf of the Astrophysics Division and leads implementation of the ACROSS pilot.

Points of Contact

Position Name Institution
TDAMM Initiative Manager Dr. Christopher J. Roberts NASA Goddard Space Flight Center
TDAMM Study Scientist Dr. Brian Humensky NASA Goddard Space Flight Center
ACROSS Pilot Implementation Scientist Dr. Jamie Kennea Penn State University

Related Information

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Astronomy and Astrophysics Advisory Committee Meeting on 26 September 2025
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Call for 2026A Proposals for NASA Infrared Telescope Facility; Deadline 1 October 2025
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JWST Call for Proposals for Cycle 5; Deadline 15 October 2025
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