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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').

6 results found.

  1. GRB 091208A: Suzaku WAM observation of the prompt emission
  2. GRB 091208A: GAO 150cm telescope Optical Observation
  3. Konus-Wind observation of GRB 091208A
  4. GRB 091208A: Swift-XRT observations
  5. GRB 091208A Swift-BAT refined analysis
  6. GRB 091208A, RIMOTS optical upper limits

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