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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"

24420 results found.

  1. GRB060213: MASTER final result
  2. GRB060213:_MASTER_optical_observation
  3. Konus-Wind observation of bright hard GRB 060213
  4. GRB 060213: IPN localization
  5. GRB 060211A: Further refined analysis of the Swift burst
  6. GRB060121: optical observations
  7. GRB060110: optical observations
  8. GRB060105: optical observations
  9. GRB 060211A: Partial refined analysis on the Swift-BAT burst
  10. GRB 060206: SOAR Detections
  11. GRB 050826: Optical Afterglow and Host Galaxy
  12. GRB 060210: Further refined analysis of the Swift-BAT burst
  13. GRB 060211B: Swift/BAT refined analysis
  14. GRB 060211B: Swift-XRT Team refined analysis
  15. GRB060211.7: MASTER_optical_observation under the snow
  16. GRB 060211A: Swift XRT Team Refined Analysis
  17. GRB060211: Faulkes North observation
  18. GRB 060211: ROTSE-III Optical Limits
  19. GRB 060211: Swift detection of a long burst
  20. GRB 060210: Refined analysis of the Swift-BAT burst
  21. GRB060210: Swift XRT Refined Analysis
  22. GRB060206, optical observations
  23. GRB 060210 : Xinglong and Lulin optical limit
  24. GRB060210: Optical Observations
  25. GRB060210:Faulkes Telescope North Afterglow Confirmation
  26. GRB060210: Optical afterglow
  27. GRB060209A: MASTER optical observation
  28. GRB 060206: TTT Observations
  29. GRB 060206: More PROMPT Detections
  30. GRB 060206: Tenagra II Observations
  31. GRB 060206: PROMPT Detections
  32. Retraction of orphan GRB afterglow candidate
  33. GRB 060206: optical observations at Asiago
  34. Orphan GRB Afterglow candidate
  35. GRB 060206: Subaru/FOCAS optical spectroscopy
  36. GRB 060206: Swift-BAT refined analysis
  37. GRB 060206 : Lulin optical observations
  38. GRB060206: Liverpool Telescope observation
  39. GRB 060206: RAPTOR observations of afterglow candidate variability.
  40. GRB060204a: Swift XRT Detection of an Afterglow Candidate
  41. GRB 060204C: XRT analysis of Swift J061223.0+701243.9
  42. GRB060203: WHT Z-band observations
  43. BAT GRB 060204C is probably not a GRB
  44. GRB 060204C: optical observations
  45. GRB 060204B: Swift-BAT refined analysis
  46. GRB060204B: Swift XRT Team Refined Analysis
  47. GRB 060204C: BOOTES-IR optical limits
  48. GRB 060204C: ROTSE-III Optical Limits
  49. GRB 060204C: Swift-BAT detection of a burst
  50. GRB060204B: Faulkes OT candidate
  51. GRB 060204A: further INTEGRAL results
  52. GRB060204B, optical observation
  53. GRB 060203: Swift-BAT refined analysis
  54. GRB 060204: a long GRB detected by INTEGRAL
  55. GRB 060202: UKIRT/WFCAM K-band and KeckI/LRIS I-band Observation
  56. GRB060203: Observations with SARA
  57. Swift BAT Trigger 180151: Swift XRT source detection
  58. Possible GRB 060203: optical observations at Asiago
  59. GRB 060202: PROMPT Observations
  60. Swift-BAT trigger 180151 is unknown origin at this time
  61. GRB 060202: Near-IR Observation with UKIRT/WFCAM
  62. GRB 060202: Optical Afterglow Candidate from Keck/LRIS
  63. GRB 060202: Refined analysis of the Swift-BAT burst
  64. GRB060202, optical observation
  65. GRB 060202: Swift XRT Team Refined Analysis
  66. GRB 060202 : Lulin R and I band limit
  67. GRB060202: Faulkes North observation
  68. GRB 060121: Gemini Late-time Observations
  69. GRB 060130: PROMPT Observations
  70. GRB 060123: Gemini spectroscopy of the putative host galaxy
  71. GRB060130: REM infrared observations
  72. GRB 060130: further INTEGRAL IBIS results
  73. GRB 060130: a long GRB detected with INTEGRAL
  74. GRB050121: optical observation
  75. GRB050121b: optical observation
  76. GRB 060123: Swift refined analysis of an unusual GRB
  77. GRB060124 optical observations
  78. GRB 060124: HETE detection and spectrum of the main peak
  79. Konus-Wind observation of GRB 060124
  80. GRB060123: Optical and IR Imaging
  81. GRB 060124: Keck optical spectrum
  82. GRB 060124: XRT refined analysis
  83. GRB 060116: Further analysis of VLT photometry and optical spectroscopy
  84. GRB 060117: Suzaku WAM observation of the prompt emission
  85. GRB060124:MASTER optical observation
  86. GRB 060111B: Suzaku WAM observation of the prompt emission
  87. GRB 060124: Swift-BAT detection of a burst
  88. GRB 060121: Swift XRT refined analysis
  89. Konus-Wind observation of GRB 060121
  90. GRB 060121: I-band Limits
  91. GRB060121: SARA Observations
  92. GRB 060121: optical observations
  93. HETE Alert 4006: MASTER promt optical limit
  94. GRB 060116: photometric redshift - the farthest GRB?
  95. Correction to GCN 4542 on GRB 060117
  96. Konus-Wind observation of GRB 060117
  97. GRB060108: photometric redshift determination
  98. GRB 060117: Refined analysis of the Swift-BAT burst
  99. GRB 060116: PROMPT Observations
  100. GRB 060116: Refined analysis of the Swift-BAT burst

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