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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"

29093 results found.

  1. GRB 071227: Suzaku WAM observation of the prompt emission
  2. Konus-Wind observation of GRB 071227
  3. GRB 071227: Swift-XRT refined analysis
  4. GRB071227: Swift/UVOT refined analysis
  5. Swift-BAT refined analysis of short GRB 071227
  6. GRB 071227: Swift detection of a burst
  7. GRB 070429B: Possible UVOT Detection of an Optical Afterglow
  8. Swift-BAT trigger 298308 is not a GRB
  9. GRB 071208?: Swift detection of a possible burst
  10. GRB 071129, Swift-BAT refined analysis
  11. GRB 071129: Swift detection of a burst
  12. Disregard the "GRB 071126" position
  13. GRB071122: Swift/UVOT Observations
  14. GRB 071122, Swift-BAT refined analysis
  15. GRB 071122 Swift-XRT refined analysis
  16. GRB 071122: ROTSE-III Optical Limits
  17. GRB 071122: Swift detection of a burst
  18. GRB071118 MITSuME OAO optical observation
  19. Swift/UVOT observations of GRB071118
  20. GRB 071117: Swift-XRT revised position
  21. Konus-Wind and Konus-A observations of GRB 071117
  22. Swift XRT follow-up observations of GRB071008
  23. Swift/UVOT upper limits for GRB 071117
  24. GRB071118: Swift XRT refined analysis
  25. GRB 071118, Swift-BAT refined analysis
  26. GRB 071117: TAROT La Silla observatory optical observations
  27. GRB 071118: Swift detection of a burst
  28. GRB 071117: Swift-XRT refined analysis
  29. GRB 071117, Swift-BAT refined analysis
  30. GRB 071117: Initial Swift/UVOT observations
  31. GRB 071117: Swift detection of a bright burst
  32. Swift detection of MXB 0656-072
  33. Correction to the Swift-BAT Transient Identification (trigger=296683)
  34. GRB 071112C MITSuME Akeno early optical observation
  35. GRB 071112C: SARA upper limit
  36. GRB 071112C: Swift-BAT refined analysis
  37. GRB 071112C: Swift/UVOT observations
  38. GRB 071112C: Swift XRT refined analysis
  39. Swift UVOT upper limits of GRB071112B
  40. GRB 071112B: Swift-XRT preliminary analysis
  41. GRB 071112B, Swift-BAT partial refined analysis of the SHB
  42. Swift-BAT trigger 296491 is not a GRB
  43. GRB 071112C: TAROT Calern observatory optical observations
  44. GRB 071112C: ROTSE-III Confirmation of Optical Counterpart
  45. GRB 071112B: ROTSE-III Rapid Optical Limits
  46. GRB 071112C: Swift detection of a burst with an optical counterpart
  47. GRB 071112B: Swift detection of a short hard burst
  48. GRB 071112: Swift detection of a possible burst
  49. Swift/UVOT initial analysis of GRB071109
  50. GRB 071109: further Swift-XRT analysis
  51. GRB 071109: TAROT Calern observatory optical observations
  52. GRB 071109: Swift-XRT possible X-ray counterpart
  53. GRB 071104: Swift-XRT Team Refined Analysis
  54. GRB 071104: Possible Swift UVOT Afterglow Candidate
  55. GRB 071104: Swift-XRT position
  56. GRB 071101, Swift-BAT refined analysis
  57. GRB 071101: TAROT Calern observatory optical observations
  58. GRB 071101: Swift XRT position
  59. GRB 071101: Swift detection of a burst
  60. GRB 071031, Swift-BAT refined analysis
  61. GRB 071031: Swift/UVOT detection of afterglow
  62. GRB 071020: MITSuME Akeno optical observations
  63. GRB 071031: VLT high-resolution spectroscopy
  64. GRB 071031: GROND detection in all bands
  65. GRB 071031: Swift detection of a burst with an optical counterpart
  66. GRB 071028B Swift-BAT detection of a burst
  67. GRB 071028: SARA observations of variable source
  68. Swift UVOT upper limits to GRB071028
  69. GRB 071028, Swift-BAT refined analysis
  70. GRB 071028: Swift detection of a burst
  71. GRB 071025: Kuiper Telescope Optical Observations
  72. GRB 071025A: RAPTOR Observations of Complex Early Optical Behavior
  73. GRB071021: MARGE Optical Limits
  74. GRB071020, optical upper limit
  75. GRB 071025: SARA VRI upper limits
  76. GRB 071025A: Complex Early-Time IR Behavior, Simultaneous with Gamma- and X-rays
  77. Swift UVOT upper limits
  78. GRB 071025, Swift-BAT refined analysis
  79. GRB 071025: Early Super-LOTIS Observations
  80. GRB 071025: ROTSE-III Refined Analysis
  81. GRB 071025a: PAIRITEL observations
  82. GRB 071025: ROTSE-III Detection of Optical Counterpart
  83. GRB 071025: Swift detection of a burst
  84. GRB 071020: SARA observations
  85. GRB071021: MITSuME Okayama Optical Upper Limits
  86. GRB 071021: optical and NIR observations
  87. GRB 071021, Swift-BAT refined analysis
  88. GRB 071021: Swift-XRT Team refined analysis
  89. Konus-Wind observation of GRB 071020
  90. GRB 071021: Faulkes Telescope South optical candidate
  91. GRB 071021: Swift detection of a burst
  92. GRB 071010B: Independent Confirmation of Break
  93. GRB 071020: Swift-XRT refined analysis
  94. GRB 071020, Swift-BAT refined analysis
  95. GRB 071020: ROTSE-III Analysis of Optical Counterpart
  96. GRB071020 - SDSS Pre-burst Observations
  97. GRB 071020: Swift detection of a bright burst
  98. GRB 071020A: ROTSE-III Detection of Optical Counterpart
  99. GRB 071018: Mercator Telescope optical observations
  100. GRB 071018: SARA observations

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