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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"

11780 results found.

  1. GRB 111229A: Swift detection of a burst
  2. GRB 111228A: Swift-XRT refined Analysis
  3. GRB 111228A: Skynet/Dolomiti Optical Observations
  4. XMM-Newton observation of the short GRB 111020A
  5. GRB 111228A: Swift detection of a burst with an optical counterpart
  6. GRB 111225A: GRT Optical Observation
  7. GRB 111225A: Swift-XRT refined Analysis
  8. GRB 111225A: TAROT Calern observatory optical detection
  9. GRB 111222A: Swift-XRT observations
  10. Konus-Wind observation of GRB 111222A
  11. GRB 110820A: optical observations in Maidanak observatory
  12. GRB 111215B: Suzaku WAM observation of the prompt emission
  13. Konus-Wind observation of GRB 111215B
  14. GRB 111215B: Swift-XRT observations
  15. IPN Triangulation of GRB 111215B (long/intense)
  16. GRB 111215A: Swift-XRT refined Analysis
  17. GRB 111215A: Swift-BAT refined analysis
  18. GRB 111209A: RAPTOR Limits Before and During the Gamma-ray Emitting Interval
  19. GRB 111215A : Xinglong TNT upper limit
  20. Konus-Wind observation of GRB 111211A
  21. GRB 111212A: Swift-XRT refined Analysis
  22. GRB 111211A: Swift/XRT target of opportunity observation
  23. GRB 111212A: Swift-XRT observations
  24. GRB 111212A: Swift detection of a burst
  25. GRB 111211A: SuperAGILE localization of a long GRB
  26. Konus-Wind observation of GRB 111209A
  27. GRB 111210A: Swift-XRT refined Analysis
  28. GRB 111208A: Swift-XRT refined analysis
  29. GRB 111210A: Swift detection of a burst
  30. GRB 111209A optical limit by "Pi of the Sky"
  31. GRB 111209A: Swift-XRT refined Analysis
  32. GRB 111209A: Faulkes Telescope North observations
  33. GRB 111208A: Swift XRT/UVOT observations
  34. GRB 111208A found in ground analysis of BAT data
  35. Konus-Wind observation of GRB 111205A
  36. IPN Triangulation of GRB 111205A (long/hard/intense)
  37. GRB 111204A: TNG NIR observations
  38. GRB 111204A: Swift-XRT refined Analysis
  39. GRB 111022B: CrAO optical limit
  40. GRB 111123A: optical upper limit in CrAO: correction to the GCN circ. 12613
  41. GRB 111123A: optical upper limit in CrAO
  42. GRB 111204A: Swift detection of a burst
  43. GRB111201A: Swift-XRT observations
  44. GRB 111201A found in ground analysis of BAT data
  45. GRB 111129A: Swift/UVOT Detection
  46. GRB 111129A, GROND afterglow observations
  47. GRB 111129A: Swift-XRT refined Analysis
  48. GRB 111129A: Swift detection of a burst with an optical counterpart
  49. GRB 111123A: TNG NIR detection of the afterglow candidate
  50. GRB 111123A: Swift-XRT refined Analysis
  51. GRB 111123A: GMG optical observation
  52. GRB 111123A: Swift detection of a burst
  53. Konus-Wind observation of GRB 111121A
  54. GRB 111117A: Chandra detection of the afterglow
  55. GRB 111117A: Gemini Afterglow Limits
  56. GRB 111117A: Swift-XRT refined Analysis
  57. GRB 111117A: NOT observations
  58. GRB 111117A: Chandra ToO observation scheduled
  59. GRB 111117A: Swift detection of a short hard burst
  60. Konus-Wind observation of GRB 111113A
  61. XRF 111111A/MAXI J0158-744: MAXI GSC and SSC detection of a soft X-ray transient near SMC
  62. GRB 111109A: Swift-BAT refined analysis
  63. GRB 111109A: Swift detection of a burst
  64. GRB 111107A: Swift-XRT refined Analysis
  65. GRB 111107A: Swift detection of a burst with an optical counterpart
  66. Konus-Wind observation of GRB 111103B
  67. GRB 111103B: Swift-XRT refined Analysis
  68. GRB 111103B: optical observations from TAU, Ka-Dar
  69. GRB 111103A: Swift-BAT refined analysis
  70. GRB 111022B: MASTER OT observations
  71. GRB 111103B: Swift detection of a strong burst from a GRB or Galactic source
  72. GRB 111103A: Swift detection of a burst
  73. GRB 111029A: Super-LOTIS early limits
  74. GRB 111029A: KAIT optical limits
  75. GRB 111029A: ROTSE-III Optical Limits
  76. GRB 111029A: Swift detection of a burst
  77. GRB 111024A: MAXI/GSC detection of a burst
  78. GRB 111022B: Swift-XRT refined Analysis
  79. GRB 111022B: MITSuME Akeno Optical upper limits
  80. GRB 111022B: Swift detection of a burst
  81. GRB 111020A: Swift-XRT refined Analysis
  82. GRB 111020A: Faulkes Telescope South observations
  83. GRB 111020A: Planned XMM-Newton observation
  84. GRB 111020A: Swift detection of a short burst
  85. Konus-Wind observation of GRB 111016B
  86. GRB 111016A: Swift-XRT refined Analysis
  87. Konus-Wind observation of GRB 111008A
  88. GRB 111008A: Swift-XRT refined Analysis
  89. GRB 111005A: Swift-BAT refined analysis
  90. GRB 111005A: Swift detection of a burst
  91. Trigger 504307: Swift detection of MAXI J1836-194
  92. GRB 110928A: Swift-XRT refined Analysis
  93. GRB 110928A: Swift-XRT observations
  94. GRB 110928A: ROTSE-III Optical Limits
  95. GRB 110924A: Swift detection of a possible burst
  96. GRB 110921A: Swift detection of a burst
  97. GRB 110918A optical observation
  98. GRB 110918A: Gemini-N redshift
  99. GRB 110918A: GROND detection of the afterglow candidate
  100. GRB 110918A: INT optical detection of Swift candidate afterglow

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