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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').

8 results found.

  1. GRB 210928A: MeerKAT detection
  2. Konus-Wind detection of GRB 210928A
  3. Correction to GCN 30915: GRB 210928A: Swift-XRT analysis
  4. GRB 210928A: Kinder SLT-40cm optical limits
  5. GRB 210928A: Swift-XRT analysis (replaces GCN 30914)
  6. GRB 210928A: Swift-XRT refined Analysis
  7. GRB 210928A: Fermi GBM observation
  8. GRB 210928A: Fermi-LAT detection


Download all Circulars as a .tar.gz archive:
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