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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"

21470 results found.

  1. GRB 080703, Swift-BAT refined analysis
  2. GRB 080702B Swift-BAT refined analysis
  3. GRB 080703: Swift detection of a burst with optical afterglow
  4. GRB 080703A: ROTSE-III Detection of Optical Counterpart
  5. No radio detection from the short GRB 080702A
  6. Swift/UVOT observation of GRB080702A
  7. GRB 080702B: Swift XRT and UVOT observations
  8. GRB 080702A: MITSuME Akeno optical upper limits
  9. GRB 080701A: Early RAPTOR optical limits
  10. Swift Trigger 315630: Swift/UVOT Upper Limits
  11. GRB 080702A, Swift-BAT refined analysis
  12. GRB 080702A: Swift-XRT Team refined analysis
  13. GRB 080702B : Burst detected in BAT during Swift slew
  14. GRB 080702A: Enhanced Swift-XRT position
  15. Swift Trigger 315630: TLS R-band observation
  16. Swift Trigger 315630: Probably not a GRB
  17. GRB 080702: Swift detection of a short burst
  18. GRB 080701: Swift-XRT refined analysis
  19. GRB 080701A, VATT optical upper limit
  20. TLS I-Band Observation of GRB 080701A
  21. GRB 080701A: Swift/UVOT Upper Limits
  22. GRB 080701A: Early Super-LOTIS Observations
  23. GRB 080701: Enhanced Swift-XRT position
  24. GRB 080701A, Swift-BAT refined analysis
  25. Trigger 315630: Swift detection of a possible burst
  26. GRB 080701: Swift-XRT Prompt Analysis
  27. GRB 080701: Swift detection of a burst
  28. GRB 080623: Suzaku WAM observation of the prompt emission
  29. GRB 080625: Swift/UVOT Follow-Up Observations
  30. GRB 080625:Swift-XRT detection of the afterglow
  31. GRB 080625: Swift/UVOT Detection of an Optical Afterglow
  32. GRB 080623: GROND upper limits
  33. GRB080623: Swift UVOT followup observations
  34. GRB 080623: Swift-XRT refined analysis
  35. GRB 080623, Swift-BAT refined analysis
  36. GRB 080623: Enhanced Swift-XRT position
  37. GRB 080623: TAROT La Silla observatory optical observations
  38. GRB 080623: Swift/UVOT Non-Detection of an Optical Afterglow
  39. GRB 080623: Swift XRT prompt analysis
  40. GRB 080623: Swift detection of a burst
  41. Swift trigger 314975 is not a GRB
  42. Swift-BAT trigger 314975 possible burst
  43. GRB080607: optical observation
  44. GRB 080603b: optical observation
  45. GRB 070809: Putative host galaxy and redshift
  46. VLA upper limit on INTEGRAL burst GRB 080613A
  47. GRB080613B: MITSuME upper limits
  48. Konus-Wind observation of GRB 080613B
  49. GRB 080613A: Swift-XRT detection of the afterglow
  50. GRB080613A: Swift/UVOT Upper Limits
  51. GRB 080613B: GROND Upper Limits
  52. GRB 080613B - NOT optical and IR nondetections
  53. GRB080613B: Swift/UVOT Upper Limits
  54. GRB 080613B, Swift-BAT refined analysis
  55. GRB 080613B: Swift-XRT refined analysis
  56. GRB 080613B: Swift detection of a burst
  57. GRB 080603b: optical observation
  58. Swift observations of BAT Slew Survey event (Trigger=010)
  59. GRB 080603A: final Swift-XRT observations.
  60. GRB 080607: AGILE-MCAL observation of the prompt emission
  61. GRB 080603B - TLS 2nd Epoch: Another Break
  62. GRB 080605: TLS 3rd Epoch - Source Confusion
  63. Konus-Wind observation of GRB 080607
  64. GRB080607: RTT150 optical observations
  65. GRB 080607: Swift-XRT refined analysis
  66. Swift/UVOT Observations of GRB080607
  67. GRB 080605: optical observations
  68. GRB 080607 KAIT observations
  69. Konus-Wind observation of GRB 080605
  70. GRB 080607: Enhanced Swift-XRT position
  71. GRB 080607, Swift-BAT refined analysis
  72. GRB 080605: GROND 2nd epoch observations
  73. GRB 080607: Swift detection of a burst with optical afterglow
  74. GRB 080607: ROTSE-III Detection of Optical Counterpart
  75. GRB 080605: Swift-UVOT refined analysis
  76. GRB 080604: VLA radio upper limit
  77. GRB 080605, Swift-BAT refined analysis
  78. GRB 080603B: VLA radio upper limit
  79. GRB 080605, Swift-BAT refined analysis
  80. GRB 080605: Swift-XRT refined analysis
  81. GRB 080605: MASTER VWF 46 s AT observation
  82. GRB 080605: Enhanced Swift-XRT position
  83. GRB 080605: GROND detection of the optical afterglow candidate
  84. GRB080605: optical observations
  85. GRB 080605: Liverpool Telescope optical afterglow candidate
  86. GRB 080605: Swift/UVOT Position of the Optical Afterglow
  87. GRB 080605: TLS RRM Afterglow
  88. GRB 080605: Swift detection of a burst with an optical afterglow
  89. GRB 080603B: TLS Afterglow Observation
  90. Swift/UVOT observations of GRB080604
  91. GRB 080604, Swift-BAT refined analysis
  92. GRB 080604: Swift-XRT refined analysis
  93. GRB 080603B : Liverpool Telescope Observations
  94. Konus-Wind observation of GRB 080603B
  95. GRB 080603B: Swift-XRT refined analysis
  96. GRB 080603A: Swift-XRT detection of the afterglow
  97. GRB 080603B: Swift/UVOT detection of the afterglow
  98. GRB 080604: Enhanced Swift-XRT position
  99. GRB 080603B, Swift-BAT refined analysis
  100. GRB 080603A: Swift/UVOT detection of the afterglow

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