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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"

23561 results found.

  1. SGR1900+14 field optical observations
  2. GRB 980613 Near-IR observations
  3. GRB 980613: Optical transient and its host galaxy
  4. SGR1627-41, RXTE/ASM observations
  5. GRB 980613: Detection of the probable host galaxy
  6. GRB 980613 Optical Observations
  7. GRB 980613 optical observations
  8. Discovery of a new SGR source, SGR1627-41
  9. GRB980613 Optical Observations
  10. GRB980613 observations from Palomar
  11. GRB980613 Near Infra-Red Observations
  12. GRB971214 Secondary Standards
  13. GRB980519 Secondary Standards
  14. BATSE on-board GRB trigger change
  15. GRB 980519 Optical Observations
  16. GRB980519 optical observations
  17. GRB 980519
  18. GRB980519 optical observations
  19. GRB 980519 Optical Observations
  20. GRB980519 Optical Observations
  21. GRB 980519 Optical Observations
  22. GRB980515, BeppoSAX IAUC to be submitted
  23. BATSE on-board GRB trigger change
  24. GRB980519, BeppoSAX-WFC updated position
  25. GRB980515: SAX-WFC updated position
  26. GRB 980425 Radio Light Curve
  27. BSAX Observations of GRB980425 field
  28. IPN web site of GRBs
  29. SAX J0840.7+2248 Optical Observations
  30. GRB980425: optical obs.
  31. GRB980425: Radio Observations
  32. report on BSAX observations of GRB980425
  33. GRB 980329 ROSAT observation
  34. GRB980326 X-ray Observations
  35. GRB980326, optical observations
  36. GRB980326, optical observations
  37. GRB980329
  38. GRB980329 Keck K-band observations
  39. GRB980326 optical observations
  40. GRB980329 optical observations
  41. GRB980329 VLA observations
  42. GRB980329 optical observations
  43. GRB980326 optical observations
  44. GRB980326 optical observations
  45. GRB980326 optical observations
  46. Optical Observations of GRB 970508
  47. Near-IR follow-up on GRB 971227
  48. Optical Observations of the GRB 971227 field
  49. Optical Observations on GRB 971227
  50. GRB971227: Plaskett R-band observations
  51. GRB 971227: Optical clarifications
  52. GRB971227: Further CAHA R-band images
  53. GRB971227: LOTIS observations
  54. GRB971214: Optical Observations and Calibrations
  55. Sub-millimeter Observations of GRB 971214 at the JCMT
  56. GRB 971214: EUVE Observations
  57. GRB 971214: KPNO Optical Observations
  58. GRB 971214: Optical Observations
  59. Radio Observations of GRB 971214 at the VLA
  60. GRB 971024: KPNO Optical Observations
  61. GRB 970828: Palomar Observations

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