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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"

38659 results found.

  1. GRB 051001: AAT infra-red observations
  2. GRB 051001: Swift-BAT refined analysis
  3. GRB 051001: Swift Detection of a Burst
  4. GRB 051001: ROTSE-III Optical Limits
  5. GRB050908: optical observations
  6. GRB050922C: optical observation
  7. GRB050922B: optical limit
  8. GRB 050922C: further VLT observations
  9. GRB 050820A: NIR photometry at the TNG
  10. GRB050922C: UVES/VLT high resolution spectroscopy
  11. GRB050925: Swift/XRT limits
  12. GRB/SGR 050925: IR Observations
  13. GRB050922C - Swift UVOT preliminary analysis
  14. GRB 050922C: break in the lightcurve
  15. GRB 050925: WSRT Radio Observations
  16. GRB050925: Swift UVOT upper limits
  17. Refined analysis of the Swift-BAT soft short burst
  18. GRB 050925 : I-band observation at Xinglong observatory
  19. GRB050925: Faulkes Telescope North R-band limit
  20. GRB050925: Swift-BAT detection of a short burst
  21. GRB 050922B: Correction to BAT refined analysis, longer burst
  22. GRB050922C: TNG spectroscopic observations
  23. GRB050922B: refined XRT analysis
  24. Konus-Wind observation of GRB 050922C
  25. GRB 050922C: Refined redshift
  26. GRB050922B: Swift UVOT early upper limits.
  27. INT 2.5m limit for GRB050922B
  28. GRB050922C: Optical Observations
  29. GRB 050922C: Swift XRT refined analysis
  30. HETE Fregate observations of GRB 050922C
  31. GRB 050922C: Swift-BAT refined analysis
  32. GRB 050922B: Swift-BAT refined analysis
  33. GRB 050922C: Absorption redshift from the Nordic Optical Telescope
  34. GRB 050922C: optical obserations
  35. GRB 050922C: NOT optical observations
  36. GRB 050922A: Analysis of Swift/XRT TOO observation
  37. GRB 050922C: Swift detection of a bright burst
  38. GRB 050922C: ROTSE-IIId Refined Analysis
  39. GRB 050922C: ROTSE-III Detection of Possible Counterpart
  40. GRB 050922B: ROTSE-III Optical Limits
  41. GRB 050922B,optical observation
  42. GRB050922B: Swift-BAT detection of a weak long burst
  43. Possible GRB 050922 detected by INTEGRAL
  44. GRB050918: Possible Swift/XRT detected afterglow
  45. GRB050820B: analysis of the XMM-Newton observation
  46. GRB050916: Swift/UVOT Upper Limits
  47. GRB 050916: Swift-BAT refined analysis
  48. GRB 050918 - A long GRB detected by INTEGRAL
  49. GRB 050915a: Radio Observations
  50. Swift-BAT trigger 155764 is not a GRB
  51. Swift-BAT trigger 155764 is probably not a GRB
  52. Swift trigger 155764: bad XRT centroid
  53. Swift-BAT trigger 155535 is definitely not a GRB
  54. GRB050916 : Swift-XRT refined analysis
  55. GRB 050916: XRT position
  56. GRB 050915B: Swift-BAT refined analysis
  57. GRB 050915B: Swift/UVOT Upper Limits
  58. GRB050916: Swift-BAT detection of a long weak burst
  59. GRB 050915a: IR Transient
  60. GRB 050915B: XRT position
  61. GRB 050915b, SMARTS optical/IR observations
  62. GRB050915B: Swift-BAT detection of a long bright burst
  63. GRB050915: Swift/UVOT upper limits
  64. GRB 050915: KAIT optical limit
  65. GRB 050915: IR Observations
  66. GRB 050915: Swift XRT refined analysis
  67. GRB 050915: Swift-BAT refined analysis
  68. GRB050915: P60 Optical Observations
  69. GRB050915, optical observations
  70. GRB050915: XRT position
  71. GRB 050915: ROTSE-III optical limits
  72. GRB 050915: Swift detection of a GRB
  73. GRB050911: Upper limit on X-ray afterglow
  74. Swift-BAT trigger 155072 ground analysis
  75. Swift-BAT trigger 155072 is probably not a GRB
  76. GRB050914: XRT position probably due to cosmic ray
  77. GRB 050911: LCO limits on a variable source
  78. GRB 050908: DEIMOS spectrum and further analysis
  79. Swift is in normal operation
  80. GRB050911: Swift UVOT followup observations
  81. GRB050911: Swift-XRT position
  82. GRB 050911: LCO observations
  83. GRB 050911: Swift-BAT refined analysis
  84. Later Swift-BAT triggers 154632 and 154633 RETRACTION
  85. GRB050911: Swift-BAT detection of a long burst
  86. GRB050908: detection of Swift/UVOT optical counterpart
  87. RBO GRB 050908 observations
  88. WIRO observations in I of GRB 050908
  89. GRB 050906: RTT150 optical observations
  90. GRB050908: Swift/UVOT Early upper limits
  91. GRB050908: VLT R-band decay index.
  92. GRB050908 : Swift-XRT refined analysis
  93. GRB 050908: Swift-BAT refined analysis
  94. GRB 050908: Optical observations
  95. Gemini Spectroscopy of GRB 050908
  96. GRB 050908: spectroscopic redshift
  97. GRB 050908: Prompt PROMPT Observations
  98. GRB 050908 : Swift XRT position
  99. GRB 050908: KAIT observations
  100. GRB 050908: P60 Confirmation of Optical Afterglow

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