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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"

19316 results found.

  1. GRB 080514B: Swift-XRT analysis
  2. GRB 080514B, GROND observations
  3. GRB 080514B: Afterglow candidate
  4. GRB 080514B: possible AGILE detection at E>50 MeV
  5. GRB 080514B: SuperAGILE/IPN GRB Localization
  6. procesure for GRB Circular
  7. GRB 080507: Suzaku WAM observation of the prompt emission
  8. GRB 080507: Swift XRT analysis confirms the X-ray afterglow
  9. GRB 080507: Keck photometry
  10. GRB 080503: Chandra Observation of X-ray Rebrightening or Flattening
  11. GRB 080503: Hubble Space Telescope Imaging
  12. GRB 080507: GRB localization by SuperAGILE
  13. GRB 080506: Swift XRT refined analysis
  14. GRB 080506, Swift-BAT refined analysis
  15. GRB080503, RIMOTS optical upper limit
  16. GRB 080506: Swift detection of a burst with optical afterglow
  17. GRB 080503: Slow-rise optical AG ?
  18. GRB 080430: TLS imaging one day after the GRB
  19. GRB 080503, Swift-BAT lag and time-resolved spectral analysis
  20. GRB080503 XRT refined analysis
  21. GRB 080503, Swift-BAT refined analysis
  22. GRB 080503: Swift detection of a short burst
  23. GRB 080430, Swift-BAT refined analysis
  24. GRB 080430: Swift-XRT refined analysis
  25. GRB 080430: Spectroscopy from CAHA
  26. GRB 080430: Bootes observation
  27. GRB 080430: Swift detection of a burst with optical afterglow
  28. GRB 080426: Swift-XRT refined analysis
  29. GRB 080426, Swift-BAT refined analysis
  30. Possible GRB 080315: XRT non-detection of afterglow
  31. GRB 080413A: Suzaku/WAM and Swift/BAT joint spectral analysis
  32. Swift XRT and UVOT observations of GRB080414
  33. GRB 080319B: Jet Break, Energetics, Supernova
  34. GRB 080413A: Suzaku WAM observation of the prompt emission
  35. GRB 080413B: Suzaku WAM observation of the prompt emission
  36. GRB 080414: A long GRB detected by INTEGRAL
  37. GRB 080413B: Ep,i-Eiso correlation
  38. GRB080413B
  39. Swift-BAT spectral lag analysis of GRB 080413B
  40. GRB 080413B, Swift-BAT refined analysis
  41. GRB 080413A: Swift-XRT refined analysis
  42. GRB 080413A, Swift-BAT refined analysis
  43. GRB 080413A Bootes observation
  44. GRB 080413B: Swift detection of a possibly short burst with optical counterpart
  45. GRB 080413: Swift detection of a burst with an optical afterglow
  46. GRB 080413: ROTSE-III Detection of Optical Counterpart
  47. GRB 080411, Swift-BAT refined analysis
  48. GRB 080411: Swift-XRT Refined Analysis
  49. GRB 080411: Swift detection of a bright burst
  50. GRB 080409: Swift-BAT refined analysis
  51. GRB 080408: GROND detection of optical/NIR afterglow candidate
  52. GRB 080330 optical observations
  53. GRB 080409: Swift XRT refined analysis
  54. GRB 080408: Swift-XRT position of a possible afterglow
  55. GRB 080408: Analysis of AGILE Gamma-ray data
  56. GRB 080408: GRB Localization by SuperAGILE
  57. GRB 080319B: Potential Jet Break Observed by Swift-XRT and UVOT
  58. GRB080330: optical observations
  59. GRB080328, RIMOTS optical upper limit
  60. GRB080330: Swift XRT refined analysis
  61. GRB 080328: Suzaku WAM observation of the prompt emission
  62. GRB 080330, Swift-BAT refined analysis
  63. Konus-Wind observation of GRB 080328
  64. GRB 080330: Redshift Confirmation from Hobby-Eberly Telescope Spectroscopy
  65. GRB 080330: TAROT Calern observatory optical observations
  66. GRB080330 - SDSS Pre-Burst Observations
  67. GRB 080330A: ROTSE-III Detection of Optical Counterpart
  68. GRB 080330: Swift detection of a burst with an optical counterpart
  69. GRB 080330: TAROT Calern observatory optical detection
  70. GRB 080328, Swift-BAT refined analysis
  71. GRB 080325, Swift-BAT refined analysis
  72. GRB 080328: Swift detection of a burst with an optical counterpart
  73. GRB 080319B : Apparent spectral evolution in very early Swift/XRT WT mode data: intrinsic or pile-up effect?
  74. GRB 080319C: Suzaku WAM observation of the prompt emission
  75. GRB 080320, Swift-BAT refined analysis
  76. GRB 080319D, Swift-BAT refined analysis
  77. GRB 080320: Swift XRT refined analysis
  78. GRB 080319D: Swift XRT refined analysis
  79. GRB 080319B: Allen Telescope Array Observations
  80. GRB 080319C, Swift-BAT refined analysis
  81. Konus-Wind observation of GRB 080319B
  82. GRB 080320 - SDSS Pre-Burst Observations
  83. GRB 080319B : Lulin observation of temporal break at 0.2 days
  84. GRB 080319C - SDSS Pre-Burst Observations
  85. GRB 080319A SDSS Pre-Burst Observations
  86. GRB080319B - SDSS Pre-Burst Observations
  87. GRB 080319A: Swift-XRT Team Refined Analysis
  88. GRB 080319B, Swift-BAT refined analysis
  89. GRB 080319C: Swift-XRT Team Refined Analysis
  90. GRB 080319B: Swift-XRT Team Refined Analysis
  91. GRB 080319C: AGILE-MCAL observation of the prompt emission
  92. GRB 080319B: TORTORA synchronous observation
  93. GRB 080319A, Swift-BAT refined analysis
  94. GRB 080319B: REM early data
  95. GRB 080319C: Swift detection of a burst with an optical afterglow
  96. GRB 080319B: Gemini-South Spectroscopy
  97. GRB 080319B: Swift detection of an intense burst with a bright optical counterpart
  98. Swift Trigger 306745 is not a GRB
  99. Swift Trigger 306616 is not a GRB
  100. GRB080315: Bok Optical Observations

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