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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 160221A: Swift-XRT afterglow detection
  2. GRB 160221A: Fermi GBM observation
  3. GRB 160221A: GROND upper limits
  4. GRB 160221A: Swift-XRT observations
  5. GRB 160221A: MASTER-SAAO early observations
  6. GRB 160221A: Swift ToO observations
  7. GRB 160221A: A long GRB detected by INTEGRAL

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