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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"

38446 results found.

  1. GRB 080514B: Suzaku WAM observation of the prompt emission
  2. Konus-Wind observation of GRB 080514B
  3. GRB 080514B: second epoch Swift XRT data confirms the X-ray afterglow
  4. GRB 080503: Further HST imaging
  5. GRB 080517, Swift-BAT refined analysis
  6. GRB 080516, GROND further analysis
  7. GRB 080517: Swift-XRT refined analysis
  8. GRB 080514B: Further NIR observations
  9. GRB 080517: Enhanced Swift-XRT position
  10. GRB 080517: Swift detection of a burst
  11. GRB 080516, GROND 2nd epoch observations
  12. GRB 080516, GROND observations
  13. GRB080430: optical observations
  14. GRB 080516, SMARTS optical/IR observations
  15. GRB 080516: Swift-XRT Team refined analysis
  16. GRB 080516: Enhanced Swift-XRT position
  17. GRB 080514B: NOT observations
  18. GRB 080516: Swift detection of a burst
  19. Errartum: VLA upper limit on GRB 080507
  20. VLA upper limit on GRB 080705
  21. GRB 080514B : redshift estimation
  22. Konus-Wind observation of GRB 080513
  23. IPN triangulation of bright GRB 080513
  24. Swift-BAT refined analysis for Trigger 311603: Galactic source
  25. GRB 080514B: KPNO 4m IR observations
  26. GRB 080514B: slow fading behaviour ?
  27. GRB 080514B: Swift-XRT analysis
  28. GRB 080514B, GROND observations
  29. GRB 080515: Swift detection of a burst
  30. GRB 080514B: Finding chart
  31. GRB 080514B: Afterglow candidate
  32. GRB 080514B: Watcher observations
  33. GRB 080514B: possible AGILE detection at E>50 MeV
  34. GRB 080514B: SuperAGILE/IPN GRB Localization
  35. Swift detection of a possible galactic transient
  36. GRB080514: REM NIR & Optical Observations
  37. Konus-Wind observation of GRB 080507
  38. GRB 080319B: Further HST observations and underlying host
  39. GRB 080506: NAYUTA Optical Observation
  40. GRB 080507: Suzaku WAM observation of the prompt emission
  41. GRB 080507: Swift XRT analysis confirms the X-ray afterglow
  42. GRB 080507: Keck photometry
  43. GRB 080503: Chandra Observation of X-ray Rebrightening or Flattening
  44. GRB080507: Swift/UVOT followup observations
  45. GRB 080506:Optical observations from HCT
  46. GRB 080507: Swift-XRT position of a possible afterglow
  47. GRB 080506: VLA radio upper limit
  48. GRB 080507: GRB localization by SuperAGILE
  49. GRB 080503: Fading in continued Gemini imaging
  50. GRB080506: Swift/UVOT observations
  51. GRB 080506, Swift-BAT refined analysis
  52. GRB080503, RIMOTS optical upper limit
  53. GRB 080506: Observations from NOT
  54. GRB 080506: TLS afterglow detection in VRIZ
  55. GRB 080506: Enhanced Swift-XRT position
  56. GRB 080506: Optical observation with KANATA/TRISPEC
  57. GRB 080506: Swift detection of a burst with optical afterglow
  58. GRB 080503: VLA radio upper limit
  59. GRB 080503: Observations from NOT
  60. GRB 080430: TLS imaging one day after the GRB
  61. GRB 080503: No further optical rebrightening
  62. GRB 080503: Late-time Optical rebrightening (possible mini-SN)
  63. GRB 080503, Swift-BAT lag and time-resolved spectral analysis
  64. GRB 080503: MITSuME Ishigakijima optical upper limits
  65. GRB080503: Swift/UVOT Upper Limits
  66. GRB080503 XRT refined analysis
  67. GRB 080503, Swift-BAT refined analysis
  68. GRB 080430
  69. GRB 080503: Enhanced Swift-XRT position
  70. GRB 080503: MITSuME Akeno optical upper limits
  71. GRB 080503: New candidate afterglow/host in Gemini imaging
  72. GRB 080503: Swift detection of a short burst
  73. GRB 080411: Continued Swift Monitoring
  74. GRB 080430: Optical observations
  75. GRB 080430: Shallow decay
  76. GRB080430: RTT150 Optical Observations
  77. GRB080430: Swift/UVOT observations
  78. VLA radio upper limit on GRB 080430
  79. GRB 080430 - multicolor observations of the afterglow
  80. GRB080430: optical observations
  81. GRB 080430: Hobby-Eberly Telescope Absorption Redshift
  82. GRB 080430: Swift-XRT refined analysis
  83. GRB 080430: Enhanced Swift-XRT position
  84. GRB 080430: Spectroscopy from CAHA
  85. GRB 080430 - SDSS Pre-Burst Observations
  86. GRB 080430: Bootes observation
  87. GRB 080430: Swift detection of a burst with optical afterglow
  88. GRB960202B - on the association with SN 1996cr
  89. GRB080426: Observations from CAHA
  90. GRB 080426: Swift-XRT refined analysis
  91. GRB080426: Swift/UVOT upper limits
  92. GRB 080426: Enhanced Swift-XRT position
  93. GRB 080426: Swift detection of a possibly short burst
  94. Possible GRB 080315: XRT non-detection of afterglow
  95. GRB 080320 : Faulkes Telescope North Observations
  96. GRB 080319A : Liverpool and Faulkes Telescopes Observations
  97. GRB080319A: MAGIC telescope GeV observation
  98. Swift-BAT trigger 309665 is not a GRB
  99. GRB 080420A: ROTSE-III Optical Limits on a possible short burst
  100. GRB 080420?: Swift detection of a possible short burst

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