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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').

11 results found.

  1. GRB 150527A: Continued RATIR Observations
  2. Konus-Wind observation of GRB 150527A
  3. GRB 150527A: Swift-XRT refined Analysis
  4. GRB 150527A: MITSuME Okayama upper limits
  5. GRB 150527A: Swift/UVOT Upper Limits
  6. GRB 150527A: Swift-BAT refined analysis
  7. GRB 150527A: Enhanced Swift-XRT position
  8. GRB 150527A: Fermi GBM observation
  9. GRB 150527A: LCOGT McDonald observations
  10. GRB 150527A: RATIR Afterglow Detection
  11. GRB 150527A: Swift detection of a burst


Download all Circulars as a .tar.gz archive:
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