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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"

45764 results found.

  1. GRB071008: Swift-XRT observation
  2. GRB 071010 REM NIR observations
  3. GRB 071010: Keck/LRIS Spectroscopy
  4. GRB 071010: TAROT La Silla observatory photometry of the afterglow
  5. GRB 071010: Rapid PROMPT Detections
  6. GRB 071010: Keck Observations of the Afterglow
  7. GRB 071010: TAROT La Silla observatory detection of the afterglow
  8. GRB 071010: Swift detection of a burst
  9. GRB 071006 Swift-BAT detection of a burst
  10. GRB071008: IAC80 observation
  11. GRB 071008: Swift detection of a burst
  12. GRB 071003: XRT refined analysis
  13. GRB070920A: MAGIC telescope GeV observation
  14. Radio detection of GRB 071003 with the VLA
  15. GRB 070810B: further XRT analysis
  16. GRB 071003: VLT spectroscopy
  17. GRB 071003: Keck spectroscopy
  18. Konus-Wind observation of GRB 071003
  19. GRB 071003: Possible rebrightening
  20. GRB 071003 : Lulin R-band observations
  21. GRB 071003: Swift XRT position
  22. GRB 071003: OA power-law decay indices from KAIT
  23. GRB 071003: Keck HIRES spectroscopy
  24. GRB 071003, Swift-BAT refined analysis
  25. GRB 071003: MARGE Observations
  26. GRB 071003 Optical observations
  27. GRB 071003: P60 Confirmation of Optical Afterglow
  28. GRB 071003: KAIT optical afterglow observations
  29. GRB 071003: Swift detection of a bright burst
  30. GRB 070714B: host galaxy spectroscopic redshift
  31. GRB 071001: Swift-XRT Team refined analysis
  32. GRB 071001, Swift-BAT refined analysis
  33. Faulkes Telescope South observations of GRB 071001
  34. GRB 071001: Swift detection of a burst
  35. VLA observation of GRB 070923
  36. Disregard the Swift-XRT Notices today
  37. GRB 070911, SMARTS optical/IR afterglow observations
  38. GRB070925: Swift-XRT Afterglow confirmation
  39. GRB 070925: Gemini South Imaging
  40. GRB070925: Swift-XRT Position
  41. Update on Swift Status
  42. GRB 070920B: ROTSE-III Early Optical Limits
  43. GRB 070925: a long GRB detected by INTEGRAL
  44. Recent SGR1806-20 Activity
  45. GRB 070923, Swift-BAT refined analysis
  46. GRB 070920B: XRT observations
  47. GRB 070923: Galaxies within BAT localization
  48. GRB 070923: Swift detection of a short hard burst
  49. GRB 070917: Suzaku/WAM observation of the prompt emission
  50. GRB 070920B: TAROT La Silla observatory optical observations
  51. INTEGRAL ToO observations of SGR1806-20
  52. GRB 070920b, SMARTS optical observation
  53. GRB 070917: Confirmation of the X-ray afterglow
  54. GRB 070920b: LCO optical observations
  55. GRB 070920B, Swift-BAT refined analysis
  56. GRB 070911: Swift/BAT and Suzaku/WAM joint spectral analysis
  57. GRB 070920B: NOT optical observations
  58. GRB 070920B: Swift detection of a burst
  59. GRB 070920, Swift-BAT refined analysis
  60. GRB 070920: TAROT Calern observatory optical observations
  61. GRB 070920: Swift detection of a burst
  62. SGR1806-20: Swift-BAT detection of enhanced activity
  63. GRB070917: Confirmation of optical afterglow
  64. GRB920925C: search for host galaxy
  65. GRB070917: optical observations
  66. GRB 070917: P60 Observations
  67. GRB 070917: pseudo-z= 2.40 from prompt emission spectrum
  68. Konus-Wind observation of GRB 070917
  69. Swift Status and XRT Calibration Uncertainties
  70. GRB 070917: Swift-XRT observations
  71. GRB 070917: KAIT optical limits
  72. GRB 070917: MITSuME Akeno Ic upper limit
  73. GRB 070917: R band observations
  74. GRB 070917, Swift-BAT refined analysis
  75. GRB 070917: Swift detection of a bright burst
  76. GRB 070911: Suzaku WAM observation of the prompt emission
  77. GRB 070913: Swift-XRT detection of the possible X-ray afterglow
  78. GRB 070809: The Swift evidence for the SHB nature of this burst
  79. GRB 070913: Afterglow candidate detected by TAROT La Silla observatory
  80. GRB 070913: Swift-BAT refined analysis
  81. GRB 070913: Corrected BAT position
  82. GRB 070913: SMARTS optical/IR observations
  83. GRB 070913: TAROT La Silla observatory optical observations
  84. GRB 070913: Swift detection of a burst
  85. Swift-BAT Notices back to autonomous real-time distribution
  86. GRB 070911: PAIRITEL IR Observations
  87. GRB 070911: Swift XRT refined analysis
  88. GRB 070911, Swift-BAT refined analysis
  89. GRB 070911: Swift detection of a burst
  90. IPN search for a GRB associated with TAROT transient on August 31
  91. Intense burst from SGR 1806-20 detected on September 7
  92. GRB 070809: Confirmation of optical transient
  93. Observations of possible TAROT GRB transient near IC 4779
  94. Candidate Orphan GRB Optical Transient in IC 4779
  95. GRB 070810b: Image Subtraction of Multiple Keck Observations
  96. Las Campanas observations of possible TAROT GRB transient near IC
  97. Orphan GRB candidate in IC 4779 at TAROT La Silla observatory
  98. Konus-Wind observation of GRB 070824
  99. GRB 070824 - Combined SuperAGILE/IPN Localization
  100. Konus-Wind observation of very bright GRB 070821

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