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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"

19662 results found.

  1. Trigger 706396: Swift detection of a short burst from PSR 1119-6127
  2. GRB 160726A, Swift-BAT refined analysis
  3. Konus-Wind observation of short GRB 160726A
  4. GRB 160726A: Fermi GBM observation
  5. GRB 160726A: Swift detection of a short burst
  6. GRB 160716A: Swift/UVOT Detection
  7. GRB 160714A: Swift/UVOT Upper Limits
  8. GRB 160716A: Swift-BAT refined analysis
  9. GRB 160716A: Swift-XRT refined Analysis
  10. GRB 160716A: Enhanced Swift-XRT position
  11. GRB 160716A: Swift detection of a burst
  12. Swift Trigger 704327: KAIT Optical Observations
  13. Swift Trigger 704444 is probably not an astrophysical event.
  14. GRB 160712A: Swift-BAT refined analysis
  15. GRB 160714A: TAROT Calern observatory optical observations
  16. GRB 160714A: Swift-XRT observations
  17. GRB 160714A: Fermi GBM observation
  18. Swift-BAT trigger 704327 was due to noise
  19. GRB 160714A: Swift-BAT refined analysis,
  20. Swift Trigger 704327: MASTER syncronous optical observations
  21. GRB 160714A: MASTER early optical observations
  22. GRB 160712A: Further GROND observations
  23. Swift Trigger 704327: a possible GRB
  24. GRB 160714A: Swift-XRT observations
  25. GRB 160714A: Swift detection of a short burst
  26. GRB 160712A: Swift/UVOT Upper Limits
  27. Konus-Wind observation of GRB 160712A
  28. GRB 160712A: GROND observations
  29. GRB 160712A: Swift-XRT refined Analysis
  30. GRB 160712A: Skynet R-COP observations
  31. GRB 160712A: Enhanced Swift-XRT position
  32. GRB 160624A: 15 GHz upper limits from AMI
  33. GRB 160712A: Initial Swift/UVOT observations
  34. GRB 160712A: Swift-XRT observations
  35. GRB 160712A: Global MASTER-Net optical observation
  36. GRB 160712A: Swift detection of a burst
  37. GRB 160709A: MASTER early imaging Swift BAT error box
  38. GRB 160709A, Swift-BAT detection and localization
  39. GRB 160709A: Swift-XRT observations
  40. GRB 160709A: Fermi-LAT detection
  41. GRB 160709A: Tiled Swift observations
  42. GRB 160705B: TAROT Calern observatory optical observations
  43. IPN Triangulation of GRB 160702A (short/hard)
  44. GRB 160705B: Swift/UVOT Upper Limits
  45. GRB 160705B: RATIR Optical and NIR Observations and Confirmation of the Fading Afterglow
  46. GRB 160705B: Swift-BAT refined analysis
  47. GRB 160705B: Swift-XRT refined Analysis
  48. GRB 160705B: Enhanced Swift-XRT position
  49. GRB 160705B: LT optical candidate
  50. GRB 160705B: Swift detection of a burst
  51. GRB 160703A: Swift/UVOT Detection
  52. GRB 160703A: Swift-XRT afterglow detection
  53. GRB 160703A: Bassano Bresciano Observatory upper limits
  54. Konus-Wind observation of GRB 160703A
  55. GRB 160703A: Swift-BAT refined analysis
  56. GRB 160703A: Zadko observatory - Gingin optical observations
  57. GRB 160703A: Swift detection of a burst
  58. Swift trigger #702630 is not an astrophysical event
  59. GRB 160629A: Swift/UVOT Upper Limits
  60. GRB 160629A: Swift-XRT afterglow detection
  61. GRB 160630A: Swift-BAT refined analysis
  62. GRB 160629A: Swift ToO observations
  63. GRB 160630A: Skynet PROMPT-CTIO observations of the optical afterglow
  64. GRB 160630A: Zadko observatory - Gingin optical observations
  65. GRB 160630A: TAROT La Silla observatory optical observations
  66. GRB 160630A: Swift/UVOT Upper Limits
  67. GRB 160630A: Swift-XRT refined Analysis
  68. GRB 160625A: GROND upper limits
  69. GRB 160630A: Enhanced Swift-XRT position
  70. GRB 160630A: GROND Afterglow Detection
  71. GRB 160630A: Swift detection of a burst
  72. Pi of the Sky detection of an optical flash accompanying GRB 160625B
  73. Konus-Wind observation of a bright burst from SGR 1935+2154
  74. GRB 160625B: Global MASTER-Net prompt optical emission detection
  75. GRB 160601A: 15 GHz upper limits from AMI
  76. SGR 1935+2154: AMI 15 GHz upper limits of the magnetar during outburst
  77. GRB 160625B: VLA Detection
  78. Fermi/GBM observation of a bright burst from magnetar SGR 1935+2154
  79. Swift-BAT refined analysis on the bright event from SGR 1935+2154
  80. Swift Trigger 701668 is probably not an astrophysical event
  81. IPN Triangulation of GRB 160620A (short/hard)
  82. GRB 160625A: Swift/UVOT Upper Limits
  83. GRB 160625A: Swift-BAT refined analysis
  84. GRB 160625A: Swift-XRT refined Analysis
  85. Trigger 701590: Swift detection of a bright outburst from SGR 1935+2154
  86. GRB 160625B: Swift/UVOT Detection
  87. GRB 160625B: RATIR Optical and NIR Afterglow Detection
  88. GRB 160625B: Fermi-LAT refined analysis
  89. GRB 160625B: Swift-XRT afterglow detection
  90. GRB 160625A: Enhanced Swift-XRT position
  91. GRB 160625B: Tiled Swift observations
  92. GRB 160625B: Fermi GBM initial observations
  93. GRB 160625B: Fermi-LAT detection of a bright burst
  94. GRB 160625A - two different events?
  95. GRB 160625A: Swift-XRT observations
  96. GRB 160625A: Swift detection of a burst
  97. GRB 160624A: Swift/UVOT Upper Limits
  98. GRB 160624A: Swift-XRT refined Analysis
  99. GRB 160624A: Fermi GBM observation
  100. GRB 160624A, Swift-BAT refined analysis

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