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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').

17 results found.

  1. Chandra observations of GRB 210905A
  2. GRB 210905A: Swift/UVOT Upper Limits
  3. GRB 210905A: ATCA detection
  4. GRB 210905A: ALMA detection
  5. GRB 210905A: AstroSat CZTI detection
  6. GRB 210905A, GROND observations
  7. Konus-Wind detection of GRB 210905A
  8. Fermi GBM Sub-Threshold Detection of GRB 210905A
  9. GRB 210905A: Swift-XRT refined Analysis
  10. GRB 210905A: DECam Detection
  11. GRB 210905A: REM NIR afterglow detection
  12. GRB 210905A: VLT/X-shooter spectroscopic redshift
  13. GRB 210905A: Continued LCO Optical Observations
  14. GRB 210905A: LCO Optical Detection
  15. GRB 210905A: Enhanced Swift-XRT position
  16. Swift GRB 210905A: Global MASTER-Net observations report
  17. GRB 210905A: Swift detection of a burst

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