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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"

28233 results found.

  1. GRB 060117: Suzaku WAM observation of the prompt emission
  2. GRB 060111B: Suzaku WAM observation of the prompt emission
  3. GRB 060124: Swift-BAT detection of a burst
  4. GRB 060121: Liverpool Telescopes optical limits
  5. GRB 060121: Swift XRT refined analysis
  6. Konus-Wind observation of GRB 060121
  7. GRB 060121: candidate optical counterpart
  8. GRB 060121: Infrared Observations
  9. GRB 060121: optical observations
  10. GRB 060121: Optical imaging
  11. GRB060121 - SDSS pre-burst observations
  12. HETE Alert 4006: MASTER promt optical limit
  13. GRB060117 - ATCA 3/6cm radio limits - correction
  14. GRB060117 - ATCA 3/6cm radio limits
  15. GRB 060116: photometric redshift - the farthest GRB?
  16. Konus-Wind observation of GRB 060117
  17. GRB 060116: UKIRT IR Observations
  18. GRB 060117: Refined analysis of the Swift-BAT burst
  19. GRB 060117: FRAM optical afterglow candidate
  20. GRB 060117: nearby galaxy
  21. GRB 060116: VLT optical observations
  22. GRB 060116: Refined analysis of the Swift-BAT burst
  23. GRB 060116: XRT refined analysis
  24. GRB 060116: IR Candidate Afterglow
  25. GRB 060116: Swift/UVOT upper limits
  26. GRB060115: REM observations
  27. GRB 060110: XRT position and analysis
  28. GRB 060116 : Lulin optical limit
  29. GRB060116: Faulkes North observation
  30. GRB 060116: Swift-BAT detection of a burst
  31. GRB 060115: Refined analysis of the Swift-BAT burst
  32. GRB 060115: Swift/UVOT upper limits
  33. GRB 060114: REM observations
  34. GRB 060115: Swift XRT refined analysis
  35. GRB 060114: Swift/UVOT Observations
  36. GRB060115, optical observation
  37. GRB 060115: MITSuME optical afterglow candidate
  38. GRB 060115: Swift detection of a burst
  39. GRB060114, optical observation
  40. GRB060114: Faulkes North observation
  41. GRB 060108: IR observations of afterglow
  42. GRB 060108: Evidence for an XRT Position Offset
  43. GRB 060110: KAIT observations
  44. GRB 060111B: Swift XRT refined analysis
  45. GRB 060111B: MITSuME detection of optical afterglow
  46. GRB 060111B: TAROT optical observation
  47. GRB060111A: RTT150 optical observations
  48. GRB060111B: RTT150, possible host galaxy
  49. GRB 060111B: Refined analysis of the Swift-BAT burst
  50. GRB 060111(a): P60 Observations
  51. GRB 060111B: Gualba observatory limit
  52. GRB 060111B: Swift detection of a burst
  53. GRB 060111: Swift-BAT Refined Analysis
  54. GRB060111.2:_MASTER optical limit
  55. GRB 060108: VLT K-band observations
  56. GRB 060111: TAROT optical observation
  57. GRB 060111: Swift detection of a burst
  58. GRB 060110: Mitsume optical observations
  59. GRB 060110: Swift-BAT refined analysis
  60. GRB 060109: Swift-BAT refined analysis
  61. GRB 060108: z-band imaging from Gemini-North
  62. GRB 060110a: RAPTOR detection of early optical emission.
  63. GRB 060110: UKIRT K-band observations
  64. GRB 060110: IR Candidate Afterglow
  65. GRB060110, optical observation
  66. GRB 060110: Correction
  67. Correction to GRB 060109 XRT analysis
  68. GRB 050110: IR Observations
  69. GRB 060109: Refined Swift-XRT analysis
  70. GRB 060109: Swift/UVOT upper limits
  71. GRB060109, optical observation
  72. GRB 060108: ISAS early observations and near IR upper limit
  73. GRB060108: P200 Ks Observations
  74. GRB 060108: early UKIRT K-band observations
  75. GRB 060108: a dark burst?
  76. GRB 060108: Refined XRT analysis
  77. GRB 060108: VLT J-band observations
  78. GRB 060108: Mitsume optical observations
  79. GRB 060108: Swift/UVOT upper limits
  80. GRB 060105: quick look analysis of the Suzaku/XIS afterglow observation
  81. GRB060108: SDSS pre-burst observations
  82. GRB060108: Faulkes Telescope observation
  83. GRB060108, optical observation
  84. GRB 060108: Refined analysis of the Swift-BAT burst
  85. GRB060108: Swift detection of its 100th GRB
  86. GRB 060105: ISAS observations and near IR upper limit
  87. GRB 060105: Swift/UVOT upper limits
  88. GRB 060105: Mitsume optical observations
  89. GRB 060105: BAT refined analysis
  90. GRB 060105: XRT refined analysis
  91. GRB060105: Suzaku-XIS and -HXD observation plan
  92. GRB060105, optical observation
  93. GRB060105: Swift detection of a bright long burst
  94. Swift-BAT trigger 175653 is probably not a GRB
  95. GRB 060102: Swift-BAT refined analysis
  96. GRB 060102: Swift-BAT detection of a burst
  97. GRB 051221B: Optical Observations with Kuiper 1.54m
  98. GRB 051227: Likely host galaxy underlying afterglow position
  99. GRB 051227: optical observation
  100. GRB 051227: optical afterglow

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