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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"

24436 results found.

  1. GRB060124:MASTER optical observation
  2. GRB 060111B: Suzaku WAM observation of the prompt emission
  3. GRB 060124: Swift-BAT detection of a burst
  4. GRB 060121: Swift XRT refined analysis
  5. Konus-Wind observation of GRB 060121
  6. GRB 060121: I-band Limits
  7. GRB060121: SARA Observations
  8. GRB 060121: optical observations
  9. HETE Alert 4006: MASTER promt optical limit
  10. GRB 060116: photometric redshift - the farthest GRB?
  11. Correction to GCN 4542 on GRB 060117
  12. Konus-Wind observation of GRB 060117
  13. GRB060108: photometric redshift determination
  14. GRB 060117: Refined analysis of the Swift-BAT burst
  15. GRB 060116: PROMPT Observations
  16. GRB 060116: Refined analysis of the Swift-BAT burst
  17. GRB 060115: PROMPT Observations
  18. GRB 060116: IR Candidate Afterglow
  19. GRB 060116: Swift/UVOT upper limits
  20. GRB060115: REM observations
  21. GRB 060110: XRT position and analysis
  22. GRB 060116 : Lulin optical limit
  23. GRB 060116: ROTSE-III Optical Limits
  24. GRB060116: Faulkes North observation
  25. GRB 060115: Refined analysis of the Swift-BAT burst
  26. GRB 060114: REM observations
  27. GRB 060114: Swift/UVOT Observations
  28. GRB 060115: Swift detection of a burst
  29. GRB 060114: refined position
  30. GRB 060114: A long GRB detected by INTEGRAL
  31. GRB060114: Faulkes North observation
  32. GRB 060108: Evidence for an XRT Position Offset
  33. GRB 060111B: Refined analysis of the Swift-BAT burst
  34. GRB 060111B: Gualba observatory limit
  35. GRB 060111B: ROTSE-III Detection of Optical Counterpart Flare
  36. GRB 060111: Swift-BAT Refined Analysis
  37. GRB060111.2:_MASTER optical limit
  38. GRB 060111: ROTSE-III Optical Limits
  39. GRB 060110: Swift-BAT refined analysis
  40. GRB 060109: Swift-BAT refined analysis
  41. GRB 060108: z-band imaging from Gemini-North
  42. GRB 060110: ROTSE-III Confirmation of Optical Counterpart
  43. GRB 060110: Correction
  44. GRB060108: Faulkes Telescope observation
  45. GRB 060108: Refined analysis of the Swift-BAT burst
  46. GRB060108: Swift detection of its 100th GRB
  47. Konus-Wind observation of GRB 060105
  48. GRB 060105: Mitsume optical observations
  49. GRB 060105: BAT refined analysis
  50. Swift-BAT trigger 175653 is not an astrophysical source
  51. Swift-BAT trigger 175653 is probably not a GRB
  52. GRB 060102: Swift-BAT refined analysis
  53. Time Correction to GRB 060102
  54. GRB 060102: Swift-BAT detection of a burst
  55. GRB051211B: optical observations
  56. GRB 051227: Magellan r'-band Imaging/Astrometry
  57. GRB 051227: XRT refined analysis
  58. GRB 051227: Swift detection of a burst
  59. GRB051117B: optical observation
  60. IBAS_alert n. 2719 : not a real GRB
  61. Konus-Wind observation of GRB 051221A
  62. GRB051221A: Suzaku WAM observation of the prompt emission
  63. GRB 051221A: MDM Optical Observations
  64. GRB051016: analysis of the XMM-Newton observation
  65. GRB 051221A: Refined spectral and temporal analysis of the Swift-BAT short hard burst
  66. GRB 051221B: ROTSE-III Optical Limits
  67. Possible GRB 051221B: MDM Optical Detection
  68. GRB 051221B: BOOTES optical observations.
  69. Swift-BAT detection of a possible burst
  70. GRB 051221: Improved astrometry of the IR counterpart
  71. GRB 051221: Refined analysis of the Swift-BAT short hard burst
  72. GRB051211A (=H3979): Refined Analysis
  73. GRB051211A: possible optical candidate
  74. GRB 051215: near-infrared observations
  75. GRB051105: optical observations
  76. GRB 051213: Swift-BAT refined analysis
  77. GRB051211B, RBO optical observations
  78. GRB051211B: Liverpool Telescope observation
  79. GRB 051211B: Swift XRT Observations
  80. GRB 051210: Magellan Imaging
  81. GRB 051211B: a long GRB detected by INTEGRAL
  82. GRB 051211: Swift XRT upper limit
  83. GRB 051211:IAC80 optical observations
  84. HETE SXC localization of GRB 051211 (=H3979)
  85. GRB 051210: Swift-BAT refined analysis of a short burst
  86. IPN observations of SGR1806-20
  87. Swift XRT positions
  88. An extraordinary long burst on December 3 from SGR1806-20
  89. IBAS Alert 2706 : not a real GRB
  90. Possible resuming of the SGR 1806-20 activity
  91. GRB051117B: optical observation
  92. GRB051111: optical observaion
  93. Swift-BAT trigger 165579 is not a GRB
  94. GRB 051127: Swift-BAT detection of a possible burst
  95. GRB051117B: Swift XRT refined analysis
  96. GRB051117b: No Swift/UVOT Detection
  97. GRB051111: Suzaku WAM observation of the prompt emission
  98. GRB051111: Rc optical observations
  99. GRB051008: Suzaku WAM observation of the prompt emission
  100. GRB 051117B: MARGE Optical Limits

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