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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"

12113 results found.

  1. GRB 060124: Confirmation of the Afterglow
  2. GRB 060124: Optical Observations at Tautenburg
  3. GRB 060117: Suzaku WAM observation of the prompt emission
  4. GRB 060111B: Suzaku WAM observation of the prompt emission
  5. Konus-Wind observation of GRB 060121
  6. GRB060117 - ATCA 3/6cm radio limits - correction
  7. GRB060117 - ATCA 3/6cm radio limits
  8. Konus-Wind observation of GRB 060117
  9. GRB 060116: PROMPT Observations
  10. GRB 060117: FRAM refined analysis
  11. GRB 060116: Refined analysis of the Swift-BAT burst
  12. GRB 060116: ROTSE-III Optical Limits
  13. GRB 060115: Refined analysis of the Swift-BAT burst
  14. GRB 060115: MITSuME optical afterglow candidate
  15. GRB 060115: Swift detection of a burst
  16. GRB 060114: A long GRB detected by INTEGRAL
  17. GRB 060111B: MITSuME detection of optical afterglow
  18. GRB 060110: MARGE observations
  19. GRB 060111B: ROTSE-III Detection of Optical Counterpart Flare
  20. GRB 060111B: Swift detection of a burst
  21. GRB 060111: TAROT optical observation
  22. GRB 060111: Swift detection of a burst
  23. GRB 060109: Swift-BAT refined analysis
  24. GRB060109, optical observation
  25. GRB060108: Swift detection of its 100th GRB
  26. Konus-Wind observation of GRB 060105
  27. GRB 060105: Mitsume optical observations
  28. GRB 060105: XRT refined analysis
  29. GRB 060102: Swift-BAT detection of a burst
  30. GRB051227: SARA Observations
  31. GRB 051227: Gemini observations
  32. GRB 051227: Magellan r'-band Imaging/Astrometry
  33. GRB 051227: refined analysis of VLT images
  34. GRB 051227: R-band object in the XRT error circle
  35. Konus-Wind observation of GRB 051221A
  36. GRB051221A: Suzaku WAM observation of the prompt emission
  37. GRB 051221A: Chandra Afterglow Position
  38. GRB 051221B: ROTSE-III Optical Limits
  39. GRB 051221A: RAPTOR Fading Counterpart Constraint
  40. GRB 051221B: BOOTES optical observations.
  41. Swift-BAT detection of a possible burst
  42. GRB 051211B: Swift XRT confirmation of the afterglow
  43. GRB 051211b: RTT150 optical observations
  44. GRB051211b: P60 Observations
  45. GRB 051211B: a long GRB detected by INTEGRAL
  46. IPN observations of SGR1806-20
  47. An extraordinary long burst on December 3 from SGR1806-20
  48. Possible resuming of the SGR 1806-20 activity
  49. GRB 051127: Swift-BAT detection of a possible burst
  50. GRB051117B: Swift XRT refined analysis
  51. GRB051111: Suzaku WAM observation of the prompt emission
  52. GRB051111: Rc optical observations
  53. GRB051008: Suzaku WAM observation of the prompt emission
  54. GRB 051021 Optical Observations
  55. GRB 051117B: ROTSE-III Optical Limits
  56. GRB 051117: Swift detection of a bright burst
  57. GRB050925: analysis of the XMM-Newton observation
  58. GRB 051111: Further spectroscopic analysis
  59. GRB/SGR 050925: XMM-Newton ToO observation
  60. GRB051111: Swift/UVOT Observations
  61. GRB 051111A: KAIT optical observations
  62. GRB051111: Swift-BAT detection of a bright burst
  63. GRB 051109b: GETS observation
  64. Early RAPTOR measurements of GRB 051109a - the movie.
  65. Konus-Wind observation of GRB 051109A
  66. GRB 051109B: ROTSE-III Optical Limits
  67. IPN triangulation and Konus spectrum of the short/soft GRB051107 (large
  68. GRB051105B: REM Optical observation
  69. GRB 051109B: Swift detection of a burst
  70. GRB 051109: Swift-BAT refined analysis
  71. GRB051109: Swift detection of a burst
  72. GRB051103: MASTER: OT limit and host galaxy candidates
  73. GRB 051105a: MDM Observations
  74. GRB 051105A: TNG optical observations
  75. IPN triangulation and Konus spectrum of the bright short/hard GRB051103
  76. GRB051105B - A long GRB detected by INTEGRAL
  77. Konus-Wind observation of GRB 051028
  78. GRB051028:MASTER correction and final results
  79. GRB 051022: RTT150 optical observations
  80. GRB051028: Swift/UVOT upper limits
  81. GRB051028: Swift XRT Position
  82. GRB051022: Swift XRT measurement of jet break
  83. SGR 1806-20: continued moderate activity seen with INTEGRAL
  84. Chandra Observations of GRB 051022
  85. GRB 051022 Chandra Observations scheduled
  86. Konus-Wind observation of GRB 051022
  87. GRB 051022 (=H3950): SXC Flight Localization is Valid
  88. GRB 051021B: Refined analysis of the Swift-BAT burst
  89. GRB 051022A: ROTSE-III Optical Limits
  90. GRB 050502b: Optical limit
  91. GRB 051016B: refined analysis of the Swift/XRT data
  92. GRB 051016: LCO optical and near-IR imaging
  93. GRB050805A: Rc optical observations
  94. GRB 051008 - a low redshift low-luminosity burst?
  95. Konus-Wind observation of GRB 051008
  96. GRB 051008, optical observations
  97. GRB 051006: P60 Observations
  98. GRB 051006: XRT refined analysis
  99. GRB051006: Refined analysis of the Swift-BAT burst
  100. GRB 051006: XRT position

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