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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"

38586 results found.

  1. GRB 080503: No further optical rebrightening
  2. GRB 080503: Late-time Optical rebrightening (possible mini-SN)
  3. GRB 080503, Swift-BAT lag and time-resolved spectral analysis
  4. GRB 080503: MITSuME Ishigakijima optical upper limits
  5. GRB080503: Swift/UVOT Upper Limits
  6. GRB080503 XRT refined analysis
  7. GRB 080503, Swift-BAT refined analysis
  8. GRB 080430
  9. GRB 080503: Enhanced Swift-XRT position
  10. GRB 080503: MITSuME Akeno optical upper limits
  11. GRB 080503: New candidate afterglow/host in Gemini imaging
  12. GRB 080503: Swift detection of a short burst
  13. GRB 080411: Continued Swift Monitoring
  14. GRB 080430: Optical observations
  15. GRB 080430: Shallow decay
  16. GRB080430: RTT150 Optical Observations
  17. GRB080430: Swift/UVOT observations
  18. VLA radio upper limit on GRB 080430
  19. GRB 080430 - multicolor observations of the afterglow
  20. GRB080430: optical observations
  21. GRB 080430: Hobby-Eberly Telescope Absorption Redshift
  22. GRB 080430: Swift-XRT refined analysis
  23. GRB 080430: Enhanced Swift-XRT position
  24. GRB 080430: Spectroscopy from CAHA
  25. GRB 080430 - SDSS Pre-Burst Observations
  26. GRB 080430: Bootes observation
  27. GRB 080430: Swift detection of a burst with optical afterglow
  28. GRB960202B - on the association with SN 1996cr
  29. GRB080426: Observations from CAHA
  30. GRB 080426: Swift-XRT refined analysis
  31. GRB080426: Swift/UVOT upper limits
  32. GRB 080426: Enhanced Swift-XRT position
  33. GRB 080426: Swift detection of a possibly short burst
  34. Possible GRB 080315: XRT non-detection of afterglow
  35. GRB 080320 : Faulkes Telescope North Observations
  36. GRB 080319A : Liverpool and Faulkes Telescopes Observations
  37. GRB080319A: MAGIC telescope GeV observation
  38. Swift-BAT trigger 309665 is not a GRB
  39. GRB 080420A: ROTSE-III Optical Limits on a possible short burst
  40. GRB 080420?: Swift detection of a possible short burst
  41. GRB080310, BVRcIc field calibration
  42. GRB 080413A: Suzaku/WAM and Swift/BAT joint spectral analysis
  43. Swift XRT and UVOT observations of GRB080414
  44. GRB 080319B: Jet Break, Energetics, Supernova
  45. GRB 080413B: Faulkes Telescope South optical afterglow observations
  46. GRB 080413A: Liverpool Telescope and Faulkes Telescope South optical observations
  47. GRB 080413A: Suzaku WAM observation of the prompt emission
  48. GRB 080413B: Suzaku WAM observation of the prompt emission
  49. GRB 080413A: MOA-II optical afterglow observations
  50. GRB 080319B: Continued Gemini-N monitoring
  51. GRB 080414 Watcher observations
  52. GRB 080414: A long GRB detected by INTEGRAL
  53. VLA radio observations of GRB 080413B
  54. GRB 080413A: Gemini-South Spectroscopy
  55. GRB 080413B: Gemini-South Spectroscopy
  56. VLA radio observations of GRB 080413A
  57. IBAS Alert n. 5257 : not a GRB
  58. GRB080413B
  59. Swift-BAT spectral lag analysis of GRB 080413B
  60. GRB 080413a, SMARTS optical/IR afterglow observations
  61. GRB 080413B: Swift XRT refined analysis
  62. GRB080413A: Swift/UVOT observations
  63. GRB 080413A: Swift-XRT refined analysis
  64. GRB 080413A Bootes observation
  65. GRB 080413A: VLT/UVES redshift
  66. GRB 080413B: VLT redshift
  67. GRB080413B: REM NIR & Optical Observation
  68. GRB 080413B: GROND detection of afterglow in all bands
  69. GRB 080413B: Swift detection of a possibly short burst with optical counterpart
  70. GRB 080413A: REM detection of the NIR Afterglow
  71. GRB 080413: Enhanced Swift-XRT position
  72. GRB 080413: Swift detection of a burst with an optical afterglow
  73. GRB 080413: ROTSE-III Detection of Optical Counterpart
  74. GRB 080411: Swift/UVOT refined analysis
  75. GRB 080411, Swift-BAT refined analysis
  76. GRB 080411: Swift-XRT Refined Analysis
  77. Konus-Wind observation of GRB 080411
  78. GRB 080411: Enhanced Swift-XRT position
  79. GRB 080411: VLT redshift
  80. GRB 080411: GROND detection of optical afterglow candidate
  81. GRB080330: MAGIC telescope GeV observation
  82. GRB 080411: Swift detection of a bright burst
  83. GRB 080330: Swift-XRT refined position retraction
  84. GRB 080408: GROND detection of optical/NIR afterglow candidate
  85. GRB 080330 optical observations
  86. Swift/UVOT observations of GRB080409
  87. GRB 080409: Swift XRT refined analysis
  88. UVOT/Swift Observations of GRB080408
  89. GRB 080408: Swift-XRT position of a possible afterglow
  90. GRB 080409: Enhanced Swift-XRT position
  91. GRB 080409: REM optical/NIR observations
  92. GRB 080409: Swift detection of a burst
  93. GRB 080408: Analysis of AGILE Gamma-ray data
  94. GRB 080408: GRB Localization by SuperAGILE
  95. GRB 080319B: HST observations
  96. GRB 080319B: Potential Jet Break Observed by Swift-XRT and UVOT
  97. GRB 080405: Swift-BAT refined analysis
  98. GRB 080405: Swift-XRT position
  99. GRB 080405: Mars Oddysey and Swift-BAT detection, possible host galaxy
  100. GRB 080325: optical upper limit

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