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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').

9 results found.

  1. GRB 190320A: Swift/UVOT Upper Limits
  2. GRB 190320A: Swift-XRT refined Analysis
  3. GRB 190320A: Swift-BAT refined analysis
  4. GRB190320A: MASTER GRB counterpart decay
  5. GRB 190320A: Fermi GBM observation
  6. GRB 190320A: Enhanced Swift-XRT position
  7. GRB190320A: MASTER OT detection
  8. GRB 190320A: Swift-XRT observations
  9. GRB 190320A: Swift detection of a burst

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Download all Circulars as a .tar.gz archive:
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