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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"

32763 results found.

  1. GRB 091018: miniTAO/ANIR Observations
  2. GRB 091018: Skynet/PROMPT Observations of Fading
  3. Konus-RF observation of GRB 091018
  4. GRB 091018 : Faulkes Telescope South Observations
  5. GRB 091018: BOOTES-3 observations
  6. GRB 091018: VLT/X-shooter spectra
  7. GRB091018: Swift/UVOT observations
  8. GRB 091018: Swift-BAT refined analysis
  9. GRB 091018: GROND observations
  10. GRB091018: Magellan Echellette Observations
  11. GRB 091018: ROTSE-III Detection of Optical Counterpart
  12. GRB 091015: Skynet/PROMPT Observations
  13. GRB 091003: Gemini-N redshift of possible host galaxy
  14. GRB 091010: optical obsevation
  15. GRB 091015: RTT150 optical observations
  16. GRB 090726 R band observations
  17. GRB 091010: optical afterglow candidate rejection
  18. GRB 091015: correction to GCN 10025
  19. GRB 091010: Swift-XRT refined analysis
  20. GRB 091010: Suzaku WAM observation of the prompt emission
  21. GRB 091010: AGILE-MCAL measurement and GRID upper limit
  22. Radio observation of GRB090927 with ATCA
  23. Radio observation of GRB090926a with ATCA
  24. Radio observation of GRB080916c with ATCA
  25. GRB 091010: Fermi GBM observation
  26. GRB 091010: Faulkes Telescope North observations
  27. GRB 090531A: Skynet/PROMPT Observations
  28. GRB 090530A: Skynet/DSO Detections
  29. GRB 091010: RXTE detection
  30. Konus-Wind observations of GRB 091010
  31. GRB 091010: Enhanced XRT position
  32. GRB 091010 optical upper limits
  33. Detection of a short GRB 090929A by RT-2 Experiment
  34. RT-2 observation of the bright GRB 090926A
  35. GRB 091010: GROND afterglow candidate
  36. GRB 091010: Swift/UVOT Upper Limits
  37. GRB 091010: Swift-XRT position
  38. SuperAGILE GRB is 091010 and not 090910
  39. GRB 090926A: Skynet/PROMPT Observations of Day 6 - 11 Fading
  40. GRB 090518: Skynet/PROMPT Observations
  41. Short-Duration GRB 090621: Skynet/Dolomiti Observations
  42. GRB 090904A: afterglow confirmation
  43. GRB 090812: Skynet/PROMPT and GORT Observations
  44. GRB 091003A: Suzaku WAM observation of the prompt emission
  45. GRB 091003: Lick observations and possible SDSS host galaxy
  46. GRB 090926B: Skynet/PROMPT Observations
  47. GRB 091003: WHT ACAM observations
  48. Konus-Wind observation of GRB 091003A
  49. GRB 090929B: Suzaku WAM observation of the prompt emission
  50. GRB 091003: Swift-XRT confirmation of fading afterglow
  51. GRB 091003: Swift/UVOT Detection of an Optical Afterglow
  52. GRB 091003: Skynet/DSO Observations
  53. GRB 091003: UVOT-enhanced XRT position
  54. GRB 091003: Swift UVOT Detection of a Candidate UV Afterglow
  55. GRB 091003: Swift XRT analysis
  56. GRB 090926A: Skynet/PROMPT Observations of Day 4 - 6 Fading Rate
  57. GRB 090926A: Skynet/PROMPT Observations of Post-Peak Fading
  58. GRB 090929A: Swift/UVOT Observations
  59. GRB 090929A, Swift-BAT refined analysis
  60. GRB 090929B, Swift-BAT refined analysis
  61. GRB 090929A: Swift-XRT non-detection
  62. Konus-Wind observation of GRB 090929A
  63. Konus-Wind observation of GRB 090929B
  64. GRB 090927: Fermi GBM observation
  65. GRB 090929B: Swift-XRT refined analysis
  66. GRB 090926A: Fermi LAT and GBM refined analysis
  67. GRB 090929B: Gemini-N upper limits
  68. GRB 090929B: Skynet/DSO Observations
  69. GRB 090929B: Swift/UVOT Observations
  70. Konus-RF observation of GRB 090929A
  71. GRB 090929B: RAPTOR Discovery of Optical Counterpart
  72. GRB 090929A BAT location of the Fermi GBM burst
  73. Correction: GRB 090929B: Enhanced Swift-XRT position
  74. GRB090926A: Swift-XRT refined analysis
  75. GRB 090927: Faulkes Telescope South Detection of the Optical Afterglow
  76. Konus-Wind and Konus-RF observations of GRB 090926A
  77. GRB 090927: VLT redshift
  78. GRB 090926B: Fermi GBM detection
  79. GRB 090927: Zadko Telescope observations
  80. GRB 090927, Swift-BAT refined analysis of the possibly short burst
  81. Swift/UVOT observations of GRB 090927
  82. GRB 090926A: Skynet/PROMPT Continued Observations
  83. GRB 090927: Swift XRT refined analysis
  84. GRB 090926A: Suzaku WAM observation of the prompt emission
  85. GRB090926B: Swift/UVOT Upper Limits
  86. GRB090926A: Swift/UVOT observations
  87. GRB 090926B: VLT spectroscopy
  88. GRB 090926B: optical object in error circle
  89. GRB 090926B: MAXI GSC detection
  90. GRB 090926A: VLT/X-shooter redshift
  91. GRB 090926B: NOT optical observation
  92. GRB 090926B: Swift XRT refined analysis
  93. GRB 090926B: Swift-BAT refined analysis
  94. GRB 090926A: Swift/UVOT detection of an optical afterglow
  95. GRB 090926A: Skynet/PROMPT Discovery of the Optical Afterglow
  96. GRB090922A: correction to Fermi location
  97. GRB 090715B: Skynet/PROMPT Detections
  98. GRB 090726: Skynet/GORT Observations
  99. GRB 090916: Swift-XRT upper limit
  100. GRB 090807: Skynet/DSO Observations

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