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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"

19324 results found.

  1. GRB 081222: Swift detection of a burst with a bright optical afterglow
  2. GRB 081221: Enhanced Swift-XRT position
  3. GRB 081221: NOT observations
  4. GRB 081221: Swift detection of a burst
  5. GRB 081217: Fermi GBM detection
  6. GRB 081211B: Further Swift-XRT analysis
  7. GRB 081215B: Fermi GBM detection
  8. GRB 081216: Suzaku WAM observation of the prompt emission
  9. GRB 081216 : Fermi GBM observation
  10. GRB 081215A: Fermi GBM detection
  11. IPN localization of short hard GRB 081216
  12. GRB 081118: Zadko observations
  13. GRB 081213: Fermi GBM detection
  14. Possible GRB 081211B - Swift-XRT analysis
  15. GRB 081207: Fermi GBM detection
  16. GRB 081209: Fermi GBM detection
  17. GRB 081211B(?): Possible burst detection from Swift-BAT slew data
  18. GRB 081211: Swift-BAT refined analysis
  19. GRB 081211: Swift XRT refined analysis
  20. GRB 081210: Swift-XRT refined analysis
  21. GRB 081210: Enhanced Swift-XRT position
  22. GRB 081210: Swift-BAT refined analysis
  23. GRB 081210: Swift detection of a burst with optical afterglow
  24. IPN triangulation of short hard GRB 081209
  25. GRB 081206C: Fermi GBM detection
  26. Radio observation of GRB 081121 with ATCA
  27. Radio observation of GRB 081118 with ATCA
  28. GRB 081206B: Fermi GBM detection
  29. GRB 081206: Fermi GBM detection
  30. GRB 081203B: Suzaku WAM observation of the prompt emission
  31. Radio observation of GRB 081109 with ATCA
  32. Radio observation of GRB 081104 with ATCA
  33. Radio observation of GRB 081029 with ATCA
  34. Radio observation of GRB 081008 with ATCA
  35. GRB081203A: Ashra-1 observation of early optical and VHE-neutrino emission
  36. GRB 081204B: Fermi GBM detection
  37. GRB 081204: Swift/UVOT Upper Limits
  38. GRB 081204: Swift XRT afterglow confirmation
  39. GRB 081204: Swift XRT afterglow candidate
  40. GRB 081204 : a long GRB localized by INTEGRAL
  41. Swift-XRT observations of GRB 081203B
  42. GRB081203A: Swift-XRT refined analysis
  43. GRB 081203B: Swift-XRT candidate afterglow.
  44. GRB081203A: Swift/UVOT grism redshift
  45. GRB 081203A: Burst detection from Swift-BAT slew data
  46. GRB 081203A: Swift-BAT refined analysis
  47. GRB 081130B: MASTER prompt optical observations
  48. GRB 081203: Swift detection of a burst with a bright optical counterpart
  49. GRB 081130B: Fermi GBM detection
  50. GRB 081130: Fermi GBM detection
  51. GRB 081126: Fermi GBM detection
  52. GRB 081129: Fermi GBM detection
  53. GRB 081122B: Fermi GBM Detection
  54. GRB 081128: Swift-XRT refined analysis
  55. GRB 081128: Liverpool Telescope afterglow confirmation
  56. GRB 081128: Swift-BAT refined analysis
  57. GRB 081128: Swift detection of a burst
  58. GRB081126: Afterglow photometry from Crni Vrh
  59. GRB 081126: GRT Optical Observation
  60. GRB 081127: Swift-XRT refined analysis
  61. GRB 081127: Swift-BAT refined analysis
  62. GRB 081126: Swift-XRT refined analysis
  63. GRB 081127: Swift detection of a burst
  64. GRB 081126: optical observations
  65. GRB 081126: Swift-BAT refined analysis
  66. GRB 081126: Enhanced Swift-XRT position
  67. GRB 081126: Swift detection of a burst
  68. GRB 081125: Fermi GBM detection
  69. GRB 081124: Fermi GBM detection
  70. GRB 081120: Fermi GBM detection
  71. GRB 081118: Fermi GBM detection.
  72. GRB 081122: Fermi GBM detection
  73. Konus-Wind observation of GRB 081121
  74. GRB 081121, SMARTS optical/IR afterglow observations
  75. Fermi GBM detection of a weak source
  76. GRB 081121: Swift-XRT refined analysis
  77. GRB 081121: Swift-BAT refined analysis
  78. GRB081121: Swift/UVOT observations
  79. GRB 081121: ROTSE-III Detection of Optical Counterpart
  80. GRB081118 : optical upper limit
  81. GRB 081119: Fermi GBM detection
  82. GRB 081118: Swift-XRT refined analysis
  83. GRB 081118: GROND detection of afterglow
  84. GRB 081118: Swift-BAT refined analysis
  85. GRB 081118: Swift detection of a burst
  86. GRB 081109A: confirmation of possible detection host galaxy
  87. Further Swift-XRT observations of the probable GRB 081105.
  88. GRB 081113: Fermi GBM detection
  89. GRB 081110: Fermi GBM detection
  90. GRB 081102: MASTER refind and final results
  91. Swift-BAT refined analysis of trigger 334129
  92. GRB 081109A, Swift-BAT refined analysis
  93. GRB 081109A: Swift-XRT refined analysis
  94. GRB 081109: Fermi GBM detection
  95. GRB 081109: REM NIR afterglow detection
  96. GRB 081109: Swift detection of a burst
  97. GRB 081024C: Fermi Gamma-ray Burst Monitor detection
  98. SGR 1806-20: Fermi GBM detection
  99. GRB 081102B: Fermi GBM detection
  100. GRB 081105B: Fermi GBM detection

Advanced

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