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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').

10 results found.

  1. GRB 150724B: Swift-XRT afterglow detection
  2. GRB 150724B: Continued RATIR Optical Observations
  3. GRB 150724B: MASTER upper limit
  4. GRB 150724B: Swift/UVOT Detection
  5. Konus-Wind observation of GRB 150724B
  6. GRB 150724B: RATIR Optical Observations
  7. GRB 150724B: Swift-XRT observations
  8. GRB 150724B: Swift ToO observations
  9. GRB 150724B: Fermi GBM detection
  10. GRB 150724B: Fermi-LAT detection


Download all Circulars as a .tar.gz archive:
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