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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"

26666 results found.

  1. Discovery of a new SGR source, SGR1627-41
  2. GRB980613 Optical Observations
  3. GRB980613 observations from Palomar
  4. GRB980613 Near Infra-Red Observations
  5. GRB980613, BeppoSAX WFC positions
  6. GRB971214 Secondary Standards
  7. GRB980519 Secondary Standards
  8. SGR1900+14
  9. SGR1900+14
  10. BATSE on-board GRB trigger change
  11. GRB 980519 Optical Observations
  12. GRB 980519
  13. GRB980519 optical observations
  14. GRB 980519 Optical Observations
  15. GRB980519 BATSE Observations
  16. GRB980519 Optical Observations
  17. GRB 980519 Optical Observations
  18. GRB980519 optical observations
  19. GRB980515, BeppoSAX IAUC to be submitted
  20. BATSE on-board GRB trigger change
  21. GRB980519, BeppoSAX-WFC updated position
  22. BeppoSAX GRB ALERT: updated position of grb980515
  23. BSAX Observations of GRB980425 field
  24. IPN web site of GRBs
  25. GRB980425 BATSE observations
  26. SAX J0840.7+2248 Optical Observations
  27. GRB980425: optical obs.
  28. GRB980425: Radio Observations
  29. report on BSAX observations of GRB980425
  30. GRB 980329 ROSAT observation
  31. GRB980326 X-ray Observations
  32. GRB980326, optical observations
  33. GRB980326, optical observations
  34. GRB980329
  35. GRB980329 Keck K-band observations
  36. GRB980329 sub-millimeter observations
  37. GRB980329 IPN annulus
  38. GRB980329 optical observations
  39. GRB980329 near-IR observations
  40. GRB980326 optical observations
  41. GRB980329 optical observations
  42. GRB980329 VLA observations
  43. GRB980329 optical observations
  44. GRB980326 optical observations
  45. GRB980326 optical observations
  46. GRB980326 optical observations
  47. GRB970508 SAO RAS optical observations
  48. Optical Observations of GRB 970508
  49. Near-IR follow-up on GRB 971227
  50. GRB971214: Keck R & I-band Observations
  51. Optical Observations of the GRB 971227 field
  52. Optical Observations on GRB 971227
  53. GRB971227: Plaskett R-band observations
  54. GRB 971227: Optical clarifications
  55. GRB971227: Further CAHA R-band images
  56. GRB971227: LOTIS observations
  57. GRB971214: Optical Observations and Calibrations
  58. GRB 971214: EUVE Observations
  59. GRB 971214: KPNO Optical Observations
  60. GRB 971214: Optical Observations
  61. Radio Observations of GRB 971214 at the VLA
  62. GRB 971214: USNOFS Observations Summary
  63. GRB 971024: KPNO Optical Observations Summary
  64. GRB 971024: KPNO Optical Observations
  65. Possible new SGR from US Naval Observatory
  66. GRB 970828: Palomar Observations

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