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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').

14 results found.

  1. GRB 210212A: Lowell Discovery Telescope observations
  2. GRB 210212A: REM early-time optical/NIR upper limits
  3. GRB 210212A: Mondy optical observations
  4. GRB 210212A: 1.3m DFOT Optical upper limit
  5. GRB 210212A: Gemini South optical observations
  6. GRB 210212A: Possible host galaxy counterpart with the NOT
  7. Swift GRB 210212A: Global MASTER-Net observations report
  8. GRB 210212A: MITSuME Akeno optical upper limits
  9. GRB 210212A: Swift-XRT refined Analysis
  10. GRB 210212A: BOOTES-4/MET optical upper limit
  11. GRB 210212A: Swift/UVOT Upper Limits
  12. GRB 210212A: Swift-BAT refined analysis
  13. GRB 210212A: Enhanced Swift-XRT position
  14. GRB 210212A: Swift detection of a burst

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