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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"

23623 results found.

  1. GRB 080702B Swift-BAT refined analysis
  2. GRB 080703: Swift detection of a burst with optical afterglow
  3. Swift/UVOT observation of GRB080702A
  4. GRB 080702B: Swift XRT and UVOT observations
  5. GRB 080625: Suzaku WAM observation of the prompt emission
  6. GRB 080702A, Swift-BAT refined analysis
  7. GRB 080702A: Swift-XRT Team refined analysis
  8. GRB 080702: Swift detection of a short burst
  9. TLS I-Band Observation of GRB 080701A
  10. GRB 080701A, Swift-BAT refined analysis
  11. Trigger 315630: Swift detection of a possible burst
  12. GRB 080701: Swift detection of a burst
  13. GRB 080623: Suzaku WAM observation of the prompt emission
  14. GRB 080625: Gamma Ray Burst Localization by SuperAGILE
  15. GRB 080623, Swift-BAT refined analysis
  16. GRB 080623: TAROT La Silla observatory optical observations
  17. GRB 080623: Swift detection of a burst
  18. Swift trigger 314975 is not a GRB
  19. Swift-BAT trigger 314975 possible burst
  20. GRB 080603b: optical observation
  21. GRB 070809: Putative host galaxy and redshift
  22. GRB 0800603A: optical observation
  23. GRB080613B: MITSuME upper limits
  24. GRB080613A: Optical upper limits with Okayama MITSuME telescope
  25. Konus-Wind observation of GRB 080613B
  26. GRB 080613B, Swift-BAT refined analysis
  27. GRB 080613B: Swift detection of a burst
  28. GRB 080613: Faulkes Telescope North optical candidate
  29. GRB 080613 : a long GRB detected with INTEGRAL
  30. Swift observations of BAT Slew Survey event (Trigger=010)
  31. GRB 080607: AGILE-MCAL observation of the prompt emission
  32. GRB080605: optical observation with the MITSuME-OAO telescope
  33. Konus-Wind observation of GRB 080607
  34. GRB080607: RTT150 optical observations
  35. GRB 080605: optical observations
  36. GRB 080607, Swift-BAT refined analysis
  37. GRB 080605: Swift-UVOT refined analysis
  38. GRB 080605, Swift-BAT refined analysis
  39. GRB 080605, Swift-BAT refined analysis
  40. GRB080605: observation by BOOTES
  41. GRB 080605: VLT redshift
  42. GRB 080605: Liverpool Telescope optical afterglow candidate
  43. GRB 080605: Swift detection of a burst with an optical afterglow
  44. GRB 080604: Xinglong R band observation
  45. GRB 080603A: Xinglong R band observation
  46. GRB 080603B: TLS Afterglow Observation
  47. GRB 080603A: TLS Afterglow Observation
  48. GRB 080604: MITSuME Okayama observation
  49. Swift/UVOT observations of GRB080604
  50. GRB 080604, Swift-BAT refined analysis
  51. GRB 080603B : Liverpool Telescope Observations
  52. Konus-Wind observation of GRB 080603B
  53. GRB 080603B: Swift-XRT refined analysis
  54. GRB 080603B: Swift/UVOT detection of the afterglow
  55. GRB 080603B, Swift-BAT refined analysis
  56. GRB 080603A: Swift/UVOT detection of the afterglow
  57. GRB080603B: RTT150 optical observations, break in light curves
  58. GRB 080604: Early Super-LOTIS Observations
  59. GRB080604: confirmation of optical afterglow
  60. GRB 080604: Swift detection of a burst with an optical afterglow
  61. GRB 080603B: TAROT Calern observatory confirmation of slow optical decay
  62. GRB 080516: TAROT La Silla observatory optical observations
  63. GRB 080603B: BOOTES2/TELMA optical observations
  64. GRB 080603B: TAROT Calern observatory detection of a plateau in the light curve
  65. GRB 080603B: Swift detection of a burst with optical afterglow
  66. GRB 080603: A long GRB detected by INTEGRAL
  67. Possible GRB080603: Faulkes Telescope North optical afterglow candidate
  68. SGR 1627-41: Chandra/RXTE/Swift Observations Scheduled
  69. GRB 080602, Swift-BAT refined analysis
  70. GRB 080602: Swift-XRT refined analysis
  71. Konus-Wind observation of GRB 080602
  72. GRB 080602: NOT R-band upper limit
  73. GRB 080602: Swift detection of a burst
  74. Konus-Wind observation of reactivation of SGR 1627-41
  75. Reactivation of SGR 1627-41
  76. GRB 080503: 2nd Epoch Chandra X-ray Observations
  77. GRB 080524: Swift-BAT detection of a burst in ground analysis
  78. GRB 080523: Swift-XRT refined analysis
  79. GRB 080523, Swift-BAT refined analysis
  80. Swift/UVOT observations of GRB 080523
  81. GRB 080523: Swift detection of a burst
  82. GRB 080520, Swift-BAT refined analysis
  83. GRB 080520: Swift detection of a burst with optical afterglow
  84. GRB 080514B: Suzaku WAM observation of the prompt emission
  85. GRB 080514B: second epoch Swift XRT data confirms the X-ray afterglow
  86. GRB 080503: Further HST imaging
  87. GRB 080517, Swift-BAT refined analysis
  88. GRB080517: Liverpool Telescope Optical Observations
  89. GRB 080517: Swift detection of a burst
  90. GRB080430: optical observations
  91. GRB 080516, Swift-BAT refined analysis
  92. GRB 080516: Swift detection of a burst
  93. GRB 080514B : redshift estimation
  94. IPN triangulation of bright GRB 080513
  95. Swift-BAT refined analysis for Trigger 311603: Galactic source
  96. GRB 080515, Swift-BAT refined analysis
  97. GRB 080514B: Swift-XRT analysis
  98. GRB 080515: Swift detection of a burst
  99. GRB 080514B: Finding chart
  100. GRB 080514B: Afterglow candidate

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