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GCN Circulars

GCN Circulars are rapid bulletins submitted by and distributed to the community. 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').
Advanced Search

To narrow the search results, use advanced search syntax. This allows for specifying which circular field to search (submitter, subject, and/or body). For additional information, refer to the advanced search documentation.

Advanced Search Examples (click to copy):

subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

43844 results found.

  1. GRB980329 near IR observations
  2. GRB980329 optical observations
  3. GRB980329 optical observations
  4. GRB980329 optical observations
  5. GRB980326 optical observations
  6. GRB980326 optical observations
  7. GRB980326 optical observations
  8. GRB980326 optical observations
  9. GRB970508 SAO RAS optical observations
  10. Optical Observations of GRB 970508
  11. GRB 971214: Redshift from Keck Observations
  12. Near-IR follow-up on GRB 971227
  13. GRB971214: Keck R & I-band Observations
  14. GRB 971227: Optical Observations
  15. Optical Observations of the GRB 971227 field
  16. Optical Observations on GRB 971227
  17. GRB971227: Plaskett R-band observations
  18. GRB 971227: Optical clarifications
  19. Optical Observations for GRB 971227
  20. GRB971227: Further CAHA R-band images
  21. GRB971227: LOTIS observations
  22. GRB 971227: CAHA R-band images
  23. GRB 971227: Optical observations
  24. GRB971214: Optical Observations and Calibrations
  25. Sub-millimeter Observations of GRB 971214 at the JCMT
  26. GRB 971214: EUVE Observations
  27. GRB 971214: Redshift from Keck Optical Observations
  28. GRB 971214: Redshift from Keck Optical Observations
  29. GRB 971214: Apache Point Observatory Optical Observations
  30. GRB 971214: KPNO Optical Observations
  31. Optical Observations of GRB 971214 at Keck
  32. GRB 971214: Optical Observations
  33. Radio Observations of GRB 971214 at the VLA
  34. GRB 971214: USNOFS Observations Summary
  35. GRB 971024: KPNO Optical Observations Summary
  36. GRB 971024: Refined analysis by USNOFS Observations
  37. GRB 971024: KPNO Optical Observations
  38. GRB 971024: USNO Observations
  39. GRB 970925: BATSE Localization
  40. IRAS 18119-1342 and the possible new SGR
  41. Possible new SGR from US Naval Observatory
  42. RXTE Observations of SGR 1814-13
  43. GRB 970828: Palomar Observations
  44. GRB 970228: Keck/LRIS Optical Observations

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