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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"

37803 results found.

  1. GRB 091018 : Faulkes Telescope South Observations
  2. GRB 091018: BOOTES-3 observations
  3. GRB 091018: VLT/X-shooter spectra
  4. GRB091018: Swift/UVOT observations
  5. GRB 091018: Swift-BAT refined analysis
  6. GRB 091018: GROND observations
  7. GRB091018: Magellan Echellette Observations
  8. GRB 091018: Enhanced Swift-XRT position
  9. GRB 091018: ROTSE-III Detection of Optical Counterpart
  10. GRB 091015: Skynet/PROMPT Observations
  11. GRB 091018: Swift detection of a burst with optical afterglow
  12. Fwd: GRB 091003: Possible Supernova Component Retraction
  13. GRB 091003: Possible Supernova Component
  14. GRB 091003: Gemini-N redshift of possible host galaxy
  15. GRB 091010: optical obsevation
  16. GRB 091015: RTT150 optical observations
  17. GRB 090726 R band observations
  18. GRB 091010: optical afterglow candidate rejection
  19. GRB 091015: correction to GCN 10025
  20. GRB 090815: a faint long GRB localized by INTEGRAL
  21. GRB 091010: Swift-XRT refined analysis
  22. GRB 091010: Suzaku WAM observation of the prompt emission
  23. GRB 091010: AGILE-MCAL measurement and GRID upper limit
  24. Radio observation of GRB090927 with ATCA
  25. Radio observation of GRB090926a with ATCA
  26. Radio observation of GRB080916c with ATCA
  27. GRB 091010: Fermi GBM observation
  28. GRB 091010: Faulkes Telescope North observations
  29. GRB 090531A: Skynet/PROMPT Observations
  30. GRB 090530A: Skynet/DSO Detections
  31. GRB 091010: RXTE detection
  32. Konus-Wind observations of GRB 091010
  33. GRB 091010: Enhanced XRT position
  34. GRB 091010 optical upper limits
  35. Detection of a short GRB 090929A by RT-2 Experiment
  36. RT-2 observation of the bright GRB 090926A
  37. GRB 091010: GROND afterglow candidate
  38. GRB 091010: Swift/UVOT Upper Limits
  39. GRB 091010: Swift-XRT position
  40. SuperAGILE GRB is 091010 and not 090910
  41. GRB 090910: SuperAGILE Localization of a Long GRB
  42. GRB 090926A: Skynet/PROMPT Observations of Day 6 - 11 Fading
  43. GRB 090518: Skynet/PROMPT Observations
  44. Short-Duration GRB 090621: Skynet/Dolomiti Observations
  45. GRB 090904A: afterglow confirmation
  46. GRB 090812: Skynet/PROMPT and GORT Observations
  47. GRB 091003A: Suzaku WAM observation of the prompt emission
  48. GRB 091003: Lick observations and possible SDSS host galaxy
  49. GRB 090926B: Skynet/PROMPT Observations
  50. GRB 091003: WHT ACAM observations
  51. Konus-Wind observation of GRB 091003A
  52. GRB 090929B: Suzaku WAM observation of the prompt emission
  53. GRB 090929A: Suzaku WAM observation of the prompt emission
  54. GRB 091003: Swift-XRT confirmation of fading afterglow
  55. GRB 091003: Swift/UVOT Detection of an Optical Afterglow
  56. GRB 091003: Skynet/DSO Observations
  57. GRB 091003: UVOT-enhanced XRT position
  58. GRB 091003: Swift UVOT Detection of a Candidate UV Afterglow
  59. GRB 091003: Swift XRT analysis
  60. GRB 091003A: Fermi LAT detection
  61. GRB 090926A: Skynet/PROMPT Observations of Day 4 - 6 Fading Rate
  62. GRB 091003A: Fermi GBM detection
  63. GRB 090926A: Skynet/PROMPT Observations of Post-Peak Fading
  64. GRB 090929A: Swift/UVOT Observations
  65. GRB 090929A, Swift-BAT refined analysis
  66. GRB 090929B, Swift-BAT refined analysis
  67. Trigger 371210: Swift/BAT Triggered on IGR J17511-3057
  68. GRB 090929A: Swift-XRT non-detection
  69. Konus-Wind observation of GRB 090929A
  70. Konus-Wind observation of GRB 090929B
  71. GRB 090927: Fermi GBM observation
  72. GRB 090929B: Swift-XRT refined analysis
  73. GRB 090926A: Fermi LAT and GBM refined analysis
  74. GRB 090929B: Gemini-N upper limits
  75. GRB 090929B: Skynet/DSO Observations
  76. GRB 090929B: Swift/UVOT Observations
  77. Konus-RF observation of GRB 090929A
  78. GRB 090929B: RAPTOR Discovery of Optical Counterpart
  79. GRB 090929A BAT location of the Fermi GBM burst
  80. Correction: GRB 090929B: Enhanced Swift-XRT position
  81. GRB 090929: Enhanced Swift-XRT position
  82. GRB 090929B: Swift detection of a burst
  83. GRB 090929A: Fermi GBM detection
  84. GRB090926A: Swift-XRT refined analysis
  85. GRB 090927: Faulkes Telescope South Detection of the Optical Afterglow
  86. Konus-Wind and Konus-RF observations of GRB 090926A
  87. GRB 090927: VLT redshift
  88. GRB 090926B: Fermi GBM detection
  89. GRB 090927: Zadko Telescope observations
  90. GRB 090927, Swift-BAT refined analysis of the possibly short burst
  91. Swift/UVOT observations of GRB 090927
  92. GRB 090926A: Skynet/PROMPT Continued Observations
  93. GRB 090927: Swift XRT refined analysis
  94. GRB 090926A: Suzaku WAM observation of the prompt emission
  95. GRB 090927: Enhanced Swift-XRT position
  96. GRB090926B: Swift/UVOT Upper Limits
  97. GRB090926A: Swift/UVOT observations
  98. GRB 090926B: VLT spectroscopy
  99. GRB 090927: Swift/UVOT detection of an optical afterglow
  100. GRB 090927: Swift detection of a short burst

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