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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').
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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"

28281 results found.

  1. GRB 071010B: Gemini Spectroscopic Observations
  2. GRB 071011: NAYUTA Optical Observation
  3. GRB 071010A: Continued Keck Imaging
  4. GRB 071010B: Bright OT confirmed with TLS
  5. GRB 071011: Swift detection of a burst
  6. Optical Observation: GRB 071010
  7. Optical observations: GRB 071010A
  8. Konus-Wind observation of GRB 071010B
  9. GRB071010B: Swift/XRT detection
  10. GRB 071010B, Swift-BAT refined analysis
  11. GRB 071010A: bright NIR afterglow
  12. GRB 071006, Swift-BAT refined analysis
  13. GRB 071010A: Keck/LRIS Photometry
  14. GRB 071008, Swift-BAT refined analysis
  15. GRB 071010, Swift-BAT refined analysis
  16. GRB 071010 REM NIR observations
  17. GRB 071010: TAROT La Silla observatory detection of the afterglow
  18. GRB 071008: Swift detection of a burst
  19. GRB 071003: XRT refined analysis
  20. GRB070920A: MAGIC telescope GeV observation
  21. Radio detection of GRB 071003 with the VLA
  22. GRB 070810B: further XRT analysis
  23. GRB 071003: Possible rebrightening
  24. GRB 071003 : Lulin R-band observations
  25. GRB 071003: Keck HIRES spectroscopy
  26. GRB 071003, Swift-BAT refined analysis
  27. GRB 071003: P60 Confirmation of Optical Afterglow
  28. GRB 071001: Swift-XRT Team refined analysis
  29. GRB 071001, Swift-BAT refined analysis
  30. Faulkes Telescope South observations of GRB 071001
  31. GRB 071001: Swift detection of a burst
  32. VLA observation of GRB 070923
  33. GRB 070911, SMARTS optical/IR afterglow observations
  34. GRB 070925: Gemini South Imaging
  35. GRB070925: Swift-XRT Position
  36. GRB 070920B: ROTSE-III Early Optical Limits
  37. GRB 070925: a long GRB detected by INTEGRAL
  38. GRB 070923, Swift-BAT refined analysis
  39. GRB 070920B: XRT observations
  40. GRB 070917: Suzaku/WAM observation of the prompt emission
  41. GRB 070920B: TAROT La Silla observatory optical observations
  42. GRB 070920B, Swift-BAT refined analysis
  43. GRB 070911: Swift/BAT and Suzaku/WAM joint spectral analysis
  44. GRB 070920B: NOT optical observations
  45. GRB 070920, Swift-BAT refined analysis
  46. GRB 070920: TAROT Calern observatory optical observations
  47. GRB 070917: P60 Observations
  48. Konus-Wind observation of GRB 070917
  49. Swift Status and XRT Calibration Uncertainties
  50. GRB 070917: Swift-XRT observations
  51. GRB 070917: MITSuME Akeno Ic upper limit
  52. GRB 070917: R band observations
  53. GRB 070917, Swift-BAT refined analysis
  54. GRB 070911: Suzaku WAM observation of the prompt emission
  55. GRB 070913: Swift-XRT detection of the possible X-ray afterglow
  56. GRB 070809: The Swift evidence for the SHB nature of this burst
  57. GRB 070913: Afterglow candidate detected by TAROT La Silla observatory
  58. GRB 070913: Swift-BAT refined analysis
  59. GRB 070913: SMARTS optical/IR observations
  60. GRB 070913: TAROT La Silla observatory optical observations
  61. GRB 070911: PAIRITEL IR Observations
  62. GRB 070911: Swift XRT refined analysis
  63. GRB 070911, Swift-BAT refined analysis
  64. Intense burst from SGR 1806-20 detected on September 7
  65. GRB 070809: Confirmation of optical transient
  66. Candidate Orphan GRB Optical Transient in IC 4779
  67. Las Campanas observations of possible TAROT GRB transient near IC
  68. Orphan GRB candidate in IC 4779 at TAROT La Silla observatory
  69. GRB 070824 - Combined SuperAGILE/IPN Localization
  70. GRB 070731: Swift/UVOT Upper Limit
  71. GRB 070805: UVOT afterglow candidate retraction
  72. GRB 070810B : Faulkes Telescope South Observations
  73. GRB 070810A: Continued Keck Imaging
  74. GRB 070810B: Keck spectroscopy of possible host galaxies
  75. GRB070810B: Swift/UVOT Upper Limits
  76. GRB 070810B: XRT refined analysis
  77. GRB 070810B, Swift-BAT refined analysis
  78. Swift Trigger 287421: False trigger due to star tracker loss
  79. GRB 070810A: Swift-BAT refined analysis
  80. GRB 070810B: Xinglong TNT optical Upper Limit
  81. GRB070810B: Optical observations with KANATA
  82. A giant outburst from Cygnus X-1 detected by Konus-Wind and Suzaku-WAM
  83. GRB 070809: Swift/UVOT Upper Limits
  84. VLA upper limit on the short hard burst GRB 070729
  85. No radio detection in superAGILE burst 070724B
  86. GRB 070809: Keck Imaging
  87. GRB 070810: Swift-XRT Team Refined Analysis
  88. GRB 070809: Swift-XRT refined analysis
  89. GRB 070810: enhanced Swift-XRT position
  90. GRB 070810: Swift/UVOT Optical Counterpart
  91. GRB 070809, Swift-BAT refined analysis
  92. GRB 070808: Swift/UVOT upper limits
  93. GRB 070809: Swift detection of a short burst
  94. GRB 070808 : Faulkes Telescope South Observations
  95. GCN Swift XRT update position notices and enhanced position circulars
  96. GRB 070808: Swift XRT refined analysis
  97. GRB 070808, Swift-BAT refined analysis
  98. GRB 070808: OPTIMA-Burst optical upper limit
  99. GRB 070808: Xinglong TNT optical Upper Limit
  100. GRB070808: Optical observations with KANATA

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