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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"

19609 results found.

  1. GRB110213A: RAPTOR Early Optical Peak and Plateau Measurements
  2. GRB 110212A: Swift XRT and UVOT observations
  3. Swift GRB110213A: interesting behaviour
  4. GRB 110213A: Fermi GBM observation
  5. GRB 110205A: Konkoly optical observations
  6. GRB 110213B: Swift XRT observation
  7. Konus-Wind observation of GRB 110213A
  8. GRB 110213A: Swift-XRT refined Analysis
  9. GRB 110213A: Swift/UVOT refined analysis
  10. GRB 110213A: Lightbuckets Optical Observations
  11. GRB 110213A, Swift-BAT refined analysis
  12. GRB 110213A: optical observations
  13. GRB 110213A: Enhanced Swift-XRT position
  14. GRB 110213A: Bok Telescope Redshift
  15. GRB 110213A: ROTSE-III Detection of Optical Counterpart
  16. GRB 110213A: Swift detection of a burst with optical afterglow
  17. GRB 110212A: GRT Optical Observation
  18. GRB 110212A, Swift-BAT refined analysis
  19. GRB 110212A: ROTSE-III Optical Limits
  20. GRB 110212A: Swift detection of a burst
  21. GRB 110207A: Suzaku WAM observation of the prompt emission
  22. GRB 110210A: Swift-XRT refined Analysis
  23. GRB 110205A: Swift/BAT and Suzaku/WAM joint spectral analysis
  24. GRB 110210A: Swift-BAT refined analysis
  25. Swift-BAT refined analysis of outburst from 1E 1841-04.5
  26. GRB 110210A: Enhanced Swift-XRT position
  27. GRB 110201A: optical observations
  28. GRB 110210A: Swift detection of a burst
  29. GRB 110206A: Swift-XRT confirmation of the X-ray afterglow
  30. Fermi GBM detection of a burst from 1E 1841-045
  31. Swift/UVOT observations of GRB110208a
  32. GRB 110205A: Suzaku WAM observation of the prompt emission
  33. GRB 110207A: Swift-XRT observations
  34. GRB 110208A: Swift-XRT refined Analysis
  35. GRB 110208A: Enhanced Swift-XRT position
  36. GRB 110208A: Swift-BAT refined analysis
  37. GRB 110208A: Swift detection of a burst
  38. SGR-like outburst from the magnetar 1E 1841-04.5
  39. GRB 110205A: optical observations in Mondy observatory
  40. GRB 110207A: Fermi GBM observation
  41. GRB 110205A : HCT optical observations
  42. GRB 110207A: TAROT Calern observatory optical observations
  43. GRB 110207A: Swift-BAT refined analysis
  44. GRB 110206A: UVOT detection of afterglow candidate
  45. GRB 110207A: MASTER prompt and early optical observations
  46. Konus-Wind observation of GRB 110205A
  47. GRB 110207A: Swift detection of a burst
  48. GRB 110206A: Swift detection of a probable X-ray afterglow
  49. GRB 110205A: Lightbuckets Optical Observations
  50. GRB 110205A: Swift/UVOT Continuing Observations
  51. Observations GRB 110205A
  52. GRB 110205A: Swift-BAT refined analysis
  53. GRB 110205A: Newcastle Observatory Optical Observations
  54. GRB 110205A: Swift-XRT refined Analysis
  55. GRB 110205A: optical flare confirmation
  56. GRB 110205A: Enhanced Swift-XRT position
  57. GRB 110205A: PAIRITEL NIR Afterglow Detection
  58. GRB 110205A: Swift/UVOT Confirmation of Flaring Afterglow
  59. GRB 110205A: Liverpool Telescope Afterglow Confirmation
  60. GRB 110205A: ROTSE-III, Optical Counterpart is flaring to ~14 mag
  61. GRB 110205A: TAROT Calern observatory optical detection
  62. GRB 110205A: Swift detection of a burst with an optical candidate
  63. GRB 110128A: Fermi GBM detection
  64. GRB 110201A: Swift-XRT refined Analysis
  65. Swift/UVOT observations of GRB110201A
  66. GRB 110201A: Swift-BAT refined analysis
  67. GRB 110201A: MASTER optical observations
  68. GRB 110201A: Swift detection of a burst
  69. GRB 110128A, Swift-BAT refined analysis
  70. GRB 110128A: Swift/UVOT observations
  71. GRB 110128A: Swift-XRT refined Analysis
  72. GRB 110128A: Enhanced Swift-XRT position
  73. GRB 110128A: TAROT Calern observatory upper limits
  74. GRB 110128A: Swift detection of a burst
  75. GRB 110106B, radio observations
  76. IPN triangulation of GRB 110120A
  77. GRB 110106A: CrAO optical observations
  78. GRB 110119A: Fermi GBM detection
  79. GRB 110119A: Suzaku WAM observation of the prompt emission
  80. GRB 110112A: optical upper limit
  81. GRB110119: Swift/UVOT Detection
  82. GRB 110119A: Swift-XRT refined Analysis
  83. GRB 110119A: Swift-BAT refined analysis
  84. GRB 110119A: PAIRITEL NIR Afterglow Detection
  85. GRB 110119A: Enhanced Swift-XRT position
  86. GRB 110119A: Swift detection of a burst with an optical detection
  87. GRB 101219B: GROND detection of a SN signature
  88. Swift-BAT trigger 442771 is a noise fluctuation
  89. GRB 101219B: correction
  90. GRB 101219B: Likely the GRB host emission dominates now in the uvw2 filter
  91. New feature in Fermi GBM GRB Ground Position Notices
  92. Swift-BAT Trigger 442539 is not a GRB
  93. Swift Trigger 442539 is probably not a GRB
  94. GRB 110112B: Swift XRT and UVOT observations of the INTEGRAL burst
  95. GRB 110107A: Swift-XRT afterglow confirmation
  96. GRB 110112A: Swift-XRT refined Analysis
  97. GRB 110112A: Swift/UVOT upper limits
  98. GRB 110112A: MASTER optical observations
  99. GRB 110112A: Swift-BAT refined analysis
  100. GRB 110112A: Enhanced Swift-XRT position

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