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GCN Circulars

GCN Circulars are rapid astronomical bulletins submitted by and distributed to community members worldwide. They are used to share discoveries, observations, quantitative near-term predictions, requests for follow-up observations, or future observing plans related to high-energy, multi-messenger, and variable or transient astrophysical events. See the documentation for help with subscribing to or submitting Circulars.

Search for Circulars by submitter, subject, or body text (e.g. 'Fermi GRB').
To navigate to a specific circular, enter the associated Circular ID (e.g. 'gcn123', 'Circular 123', or '123').

7 results found.

  1. GRB 150428B: IRSF NIR upper limits
  2. GRB 150428B: Swift/UVOT Upper Limits
  3. GRB 150428B: Swift-XRT refined Analysis
  4. GRB 150428B: MASTER-net prompt optical observation
  5. GRB 150428B: Swift-BAT refined analysis
  6. GRB 150428B: Enhanced Swift-XRT position
  7. GRB 150428B: Swift detection of a burst

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A service of the Astrophysics Science Division at NASA Goddard Space Flight Center

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