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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.

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subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

24429 results found.

  1. GRB 091109A: GROND and VLT observations
  2. GRB 091109B: VLT afterglow confirmation
  3. GRB 091109B: Swift-XRT Team refined analysis
  4. GRB 091109B: Swift-BAT refined analysis
  5. GRB 091109B: Optical limits from Watcher
  6. GRB 091109B: ROTSE-III Optical Limits
  7. GRB 091030: Fermi GBM detection
  8. GRB 091109: Faulkes Telescope South observations
  9. GRB 091109: Swift-BAT refined analysis
  10. GRB 091029: Observations from Stardome Observatory
  11. GRB 091104: Swift-BAT refined analysis
  12. GRB 091102: LABOCA/APEX submm observations
  13. Fermi LAT Upper Limits on GRB 091010
  14. GRB 091102A: Fermi GBM observation
  15. GRB 091102: GROND Upper Limits
  16. GRB 091102: Swift-BAT refined analysis
  17. GRB 091102: Swift/XRT localization
  18. GRB 091102: ROTSE-III Optical Limits
  19. GRB 091102: Swift detection of a burst
  20. GRB 091031: Fermi GBM detection
  21. GRB 091024: Fermi LAT upper limits
  22. GRB 090926a, SMARTS optical/IR afterglow observations
  23. GRB 091029, SMARTS optical/IR afterglow observations
  24. GRB 091018, SMARTS optical/IR afterglow observations
  25. GRB 090920: Skynet/DSO Detection
  26. GRB 091029: Swift-BAT refined analysis
  27. GRB 091029: Skynet/PROMPT Observations of Peak and Fading
  28. GRB 091020: Fermi GBM observation
  29. GRB 091026: Suzaku WAM observation of the prompt emission
  30. GRB 091026: Swift-BAT refined analysis
  31. GRB 091026: Swift-XRT refined analysis
  32. Konus-Wind and Konus-RF observations of GRB 091024
  33. GRB 091020 : Xinglong TNT upper limit
  34. Swift-BAT Triggers 373776-373778 are not real
  35. GRB 091024: KAIT optical afterglow observations
  36. GRB091024: VRcIc Afterglow Observations
  37. GRB 091024: Swift-BAT refined analysis
  38. Swift-BAT Triggers 373679-373684 are not real
  39. GRB 091024: Fermi GBM Observations
  40. GRB 091024: Swift-XRT team refined analysis
  41. GRB 091024: Xinglong TNT optical observation
  42. GRB 091024: Faulkes Telescope North Afterglow Candidate
  43. GRB 091024: Swift detection of a burst
  44. GRB 091020: Additional Lick observations
  45. Konus-Wind observations of GRB 091010
  46. GRB 091020: Swift-XRT refined analysis
  47. GRB 091020: NOT spectroscopic redshift
  48. GRB 091020: MASTER optical transient polarimetry
  49. GRB 091020, Swift-BAT refined analysis
  50. GRB 090926A: Late-time Gemini South Observations and Possible Jet Break
  51. GRB 091018: Skynet/PROMPT Observations of Fading
  52. Konus-RF observation of GRB 091018
  53. GRB 091018: Swift-BAT refined analysis
  54. GRB 091018: ROTSE-III Detection of Optical Counterpart
  55. GRB 091015: Skynet/PROMPT Observations
  56. GRB 091003: Possible Supernova Component
  57. GRB 090726 R band observations
  58. GRB 091010: optical afterglow candidate rejection
  59. GRB 090815: a faint long GRB localized by INTEGRAL
  60. GRB 091010: Swift-XRT refined analysis
  61. GRB 091010: Suzaku WAM observation of the prompt emission
  62. GRB 091010: AGILE-MCAL measurement and GRID upper limit
  63. GRB 091010: Fermi GBM observation
  64. GRB 091010: Faulkes Telescope North observations
  65. GRB 090531A: Skynet/PROMPT Observations
  66. GRB 090530A: Skynet/DSO Detections
  67. GRB 091010: RXTE detection
  68. Konus-Wind observations of GRB 091010
  69. Detection of a short GRB 090929A by RT-2 Experiment
  70. RT-2 observation of the bright GRB 090926A
  71. GRB 091010: Swift/UVOT Upper Limits
  72. SuperAGILE GRB is 091010 and not 090910
  73. GRB 090910: SuperAGILE Localization of a Long GRB
  74. GRB 090518: Skynet/PROMPT Observations
  75. Short-Duration GRB 090621: Skynet/Dolomiti Observations
  76. GRB 090904A: afterglow confirmation
  77. GRB 090812: Skynet/PROMPT and GORT Observations
  78. GRB 091003A: Suzaku WAM observation of the prompt emission
  79. GRB 090926B: Skynet/PROMPT Observations
  80. Konus-Wind observation of GRB 091003A
  81. GRB 090929B: Suzaku WAM observation of the prompt emission
  82. GRB 090929A: Suzaku WAM observation of the prompt emission
  83. GRB 091003: Skynet/DSO Observations
  84. GRB 091003A: Fermi LAT detection
  85. GRB 091003A: Fermi GBM detection
  86. GRB 090929A, Swift-BAT refined analysis
  87. GRB 090929B, Swift-BAT refined analysis
  88. GRB 090929A: Swift-XRT non-detection
  89. Konus-Wind observation of GRB 090929A
  90. Konus-Wind observation of GRB 090929B
  91. GRB 090927: Fermi GBM observation
  92. GRB 090926A: Fermi LAT and GBM refined analysis
  93. GRB 090929B: Skynet/DSO Observations
  94. GRB 090929B: Swift/UVOT Observations
  95. Konus-RF observation of GRB 090929A
  96. GRB 090929A BAT location of the Fermi GBM burst
  97. GRB 090929A: Fermi GBM detection
  98. Konus-Wind and Konus-RF observations of GRB 090926A
  99. GRB 090926B: Fermi GBM detection
  100. GRB 090927: Zadko Telescope observations

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