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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"

12170 results found.

  1. GRB051211b: P60 Observations
  2. GRB 051211B: a long GRB detected by INTEGRAL
  3. IPN observations of SGR1806-20
  4. An extraordinary long burst on December 3 from SGR1806-20
  5. Possible resuming of the SGR 1806-20 activity
  6. GRB 051127: Swift-BAT detection of a possible burst
  7. GRB051117B: Swift XRT refined analysis
  8. GRB051111: Suzaku WAM observation of the prompt emission
  9. GRB051111: Rc optical observations
  10. GRB051008: Suzaku WAM observation of the prompt emission
  11. GRB 051021 Optical Observations
  12. GRB 051117B: ROTSE-III Optical Limits
  13. GRB 051117: Swift detection of a bright burst
  14. GRB050925: analysis of the XMM-Newton observation
  15. GRB 051111: Further spectroscopic analysis
  16. GRB/SGR 050925: XMM-Newton ToO observation
  17. GRB051111: Swift/UVOT Observations
  18. GRB 051111A: KAIT optical observations
  19. GRB051111: Swift-BAT detection of a bright burst
  20. GRB 051109b: GETS observation
  21. Early RAPTOR measurements of GRB 051109a - the movie.
  22. Konus-Wind observation of GRB 051109A
  23. GRB 051109B: ROTSE-III Optical Limits
  24. IPN triangulation and Konus spectrum of the short/soft GRB051107 (large
  25. GRB051105B: REM Optical observation
  26. GRB 051109B: Swift detection of a burst
  27. GRB 051109: Swift-BAT refined analysis
  28. GRB051109: Swift detection of a burst
  29. GRB051103: MASTER: OT limit and host galaxy candidates
  30. GRB 051105a: MDM Observations
  31. GRB 051105A: TNG optical observations
  32. IPN triangulation and Konus spectrum of the bright short/hard GRB051103
  33. GRB051105B - A long GRB detected by INTEGRAL
  34. Konus-Wind observation of GRB 051028
  35. GRB051028:MASTER correction and final results
  36. GRB 051022: RTT150 optical observations
  37. GRB051028: Swift/UVOT upper limits
  38. GRB051028: Swift XRT Position
  39. GRB051022: Swift XRT measurement of jet break
  40. SGR 1806-20: continued moderate activity seen with INTEGRAL
  41. Chandra Observations of GRB 051022
  42. GRB 051022 Chandra Observations scheduled
  43. Konus-Wind observation of GRB 051022
  44. GRB 051022 (=H3950): SXC Flight Localization is Valid
  45. GRB 051021B: Refined analysis of the Swift-BAT burst
  46. GRB 051022A: ROTSE-III Optical Limits
  47. GRB 050502b: Optical limit
  48. GRB 051016B: refined analysis of the Swift/XRT data
  49. GRB 051016: LCO optical and near-IR imaging
  50. GRB050805A: Rc optical observations
  51. GRB 051008 - a low redshift low-luminosity burst?
  52. Konus-Wind observation of GRB 051008
  53. GRB 051008, optical observations
  54. GRB 051006: P60 Observations
  55. GRB 051006: XRT refined analysis
  56. GRB051006: Refined analysis of the Swift-BAT burst
  57. GRB 051006: XRT position
  58. GRB051006: Swift detection of a burst
  59. GRB 051001: Swift XRT refined analysis
  60. GRB 051001: AAT infra-red observations
  61. GRB 051001: ROTSE-III Optical Limits
  62. GRB050922C: optical observation
  63. GRB050922C: UVES/VLT high resolution spectroscopy
  64. GRB050925: Swift/XRT limits
  65. GRB/SGR 050925: IR Observations
  66. GRB050925: Swift-BAT detection of a short burst
  67. GRB 050922B: Correction to BAT refined analysis, longer burst
  68. Konus-Wind observation of GRB 050922C
  69. GRB050922C: Optical Observations
  70. GRB 050922C: Swift XRT refined analysis
  71. GRB 050922C: optical obserations
  72. GRB 050922C: ROTSE-IIId Refined Analysis
  73. GRB 050922B: ROTSE-III Optical Limits
  74. Possible GRB 050922 detected by INTEGRAL
  75. GRB050820B: analysis of the XMM-Newton observation
  76. GRB050916: Swift/UVOT Upper Limits
  77. GRB 050918 - A long GRB detected by INTEGRAL
  78. Swift-BAT trigger 155535 is definitely not a GRB
  79. GRB 050916: XRT position
  80. GRB050916: Swift-BAT detection of a long weak burst
  81. GRB 050915B: XRT position
  82. GRB050915B: Swift-BAT detection of a long bright burst
  83. GRB 050915: Swift-BAT refined analysis
  84. GRB050915: P60 Optical Observations
  85. GRB 050915: ROTSE-III optical limits
  86. Swift is in normal operation
  87. GRB 050911: Swift-BAT refined analysis
  88. GRB 050911: z~0.16 cluster in the field
  89. GRB050911: Swift-BAT detection of a long burst
  90. GRB 050910a: TAROT early optical limits
  91. GRB 050906: Possible X-ray Counterpart
  92. GRB 050908: Swift-BAT refined analysis
  93. GRB 050908: Optical observations
  94. GRB 050908: Prompt PROMPT Observations
  95. Swift trigger 154073 is not a GRB
  96. GRB050904: CrAO optical observations
  97. GRB 050906: Swift-BAT refined analysis
  98. GRB 050906: Radio Observations
  99. GRB 050906: Bright galaxy in BAT error box
  100. GRB 050904: Swift/UVOT observations

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