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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"

27630 results found.

  1. GRB 080702B : Burst detected in BAT during Swift slew
  2. Swift Trigger 315630: TLS R-band observation
  3. Swift Trigger 315630: Probably not a GRB
  4. GRB 080702: Swift detection of a short burst
  5. GRB 080701A: Swift/UVOT Upper Limits
  6. GRB 080701A: Early Super-LOTIS Observations
  7. GRB 080701A, Swift-BAT refined analysis
  8. Trigger 315630: Swift detection of a possible burst
  9. GRB 080701: Swift-XRT Prompt Analysis
  10. GRB 080701: Swift detection of a burst
  11. GRB 080623: Suzaku WAM observation of the prompt emission
  12. GRB 080625: Swift/UVOT Follow-Up Observations
  13. GRB 080625:Swift-XRT detection of the afterglow
  14. GRB 080625: Swift/UVOT Detection of an Optical Afterglow
  15. GRB 080623: GROND upper limits
  16. GRB080623: Swift UVOT followup observations
  17. GRB 080623, Swift-BAT refined analysis
  18. GRB 080623: TAROT La Silla observatory optical observations
  19. GRB 080623: Swift/UVOT Non-Detection of an Optical Afterglow
  20. GRB 080623: Swift XRT prompt analysis
  21. GRB 080623: Swift detection of a burst
  22. Swift trigger 314975 is not a GRB
  23. Swift-BAT trigger 314975 possible burst
  24. GRB080613B: MITSuME upper limits
  25. GRB080613A: Optical upper limits with Okayama MITSuME telescope
  26. Konus-Wind observation of GRB 080613B
  27. GRB 080613A: Swift-XRT detection of the afterglow
  28. GRB080613A: Swift/UVOT Upper Limits
  29. GRB 080613A: GROND Confirmation of the Afterglow Candidate
  30. GRB 080613B: GROND Upper Limits
  31. GRB080613B: Swift/UVOT Upper Limits
  32. GRB 080613B, Swift-BAT refined analysis
  33. GRB 080613B: Swift-XRT refined analysis
  34. GRB 080613B: Swift detection of a burst
  35. GRB 080613: Faulkes Telescope North optical candidate
  36. Swift observations of BAT Slew Survey event (Trigger=010)
  37. Konus-Wind observation of GRB 080607
  38. GRB080607: RTT150 optical observations
  39. GRB 080607: Swift-XRT refined analysis
  40. Swift/UVOT Observations of GRB080607
  41. GRB 080607 KAIT observations
  42. Konus-Wind observation of GRB 080605
  43. GRB 080607, Swift-BAT refined analysis
  44. GRB 080605: GROND 2nd epoch observations
  45. GRB 080607: Keck/LRIS spectroscopy and redshift
  46. GRB 080607: Super-LOTIS early observations
  47. GRB 080607: Swift detection of a burst with optical afterglow
  48. GRB 080607: ROTSE-III Detection of Optical Counterpart
  49. GRB 080605: Swift-UVOT refined analysis
  50. GRB 080605, Swift-BAT refined analysis
  51. GRB 080605, Swift-BAT refined analysis
  52. GRB 080605: Swift-XRT refined analysis
  53. GRB080605: observation by BOOTES
  54. GRB 080605: MASTER VWF 46 s AT observation
  55. GRB 080605: GROND detection of the optical afterglow candidate
  56. GRB 080605: Liverpool Telescope optical afterglow candidate
  57. GRB 080605: Swift/UVOT Position of the Optical Afterglow
  58. GRB 080605: Swift detection of a burst with an optical afterglow
  59. GRB 080603B: PAIRITEL infrared detection
  60. GRB 080603A: PAIRITEL infrared detection
  61. Swift/UVOT observations of GRB080604
  62. GRB 080604, Swift-BAT refined analysis
  63. GRB 080604: Swift-XRT refined analysis
  64. GRB 080603B : Liverpool Telescope Observations
  65. Konus-Wind observation of GRB 080603B
  66. GRB 080603B: Swift-XRT refined analysis
  67. GRB 080603A: Swift-XRT detection of the afterglow
  68. GRB 080603B: Swift/UVOT detection of the afterglow
  69. GRB 080603B, Swift-BAT refined analysis
  70. GRB 080603A: Swift/UVOT detection of the afterglow
  71. GRB080603B: RTT150 optical observations, break in light curves
  72. GRB 080604: Early Super-LOTIS Observations
  73. GRB080604: confirmation of optical afterglow
  74. GRB 080604: Swift detection of a burst with an optical afterglow
  75. GRB 080603B: TAROT Calern observatory confirmation of slow optical decay
  76. GRB 080516: TAROT La Silla observatory optical observations
  77. GRB 080603B: TAROT Calern observatory detection of a plateau in the light curve
  78. GRB 080603B: Swift detection of a burst with optical afterglow
  79. GRB 080603B: ROTSE-III Detection of Optical Counterpart
  80. GRB 080603: Gemini-North redshift
  81. Possible GRB080603: Faulkes Telescope North optical afterglow candidate
  82. SGR 1627-41: Chandra/RXTE/Swift Observations Scheduled
  83. GRB 080602, Swift-BAT refined analysis
  84. GRB 080602: Swift-XRT refined analysis
  85. Konus-Wind observation of GRB 080602
  86. GRB 080602: NOT R-band upper limit
  87. GRB 080602: Swift detection of a burst
  88. Swift analysis of BAT Slew Survey event (Trigger=009)
  89. Konus-Wind observation of reactivation of SGR 1627-41
  90. Reactivation of SGR 1627-41
  91. GRB 080524: Swift XRT and UVOT analysis
  92. GRB 080524: Swift-BAT detection of a burst in ground analysis
  93. GRB 080523, Swift-BAT refined analysis
  94. Swift/UVOT observations of GRB 080523
  95. GRB 080523: Swift detection of a burst
  96. GRB080521(?): detection of possible burst from BAT slew data and XRT ToO
  97. GRB 80516: Swift/UVOT Observations
  98. GRB 080515: Swift-XRT position and analysis
  99. GRB 080520, Swift-BAT refined analysis
  100. GRB080520: Swift/UVOT observations

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