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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"

28119 results found.

  1. Konus-Wind observation of GRB 060510A
  2. GRB060418: optical observations
  3. GRB 060428a, SMARTS optical/IR afterglow detection
  4. GRB060510B: Swift XRT refined analysis
  5. GRB 060510A: Refined analysis of the Swift-BAT burst
  6. GRB 060510B: Swift-BAT Refined Analysis
  7. GRB060510A: XRT refined analysis
  8. GRB060510 - SDSS Pre-Burst Observations
  9. GRB 060510B: Swift detection of a burst
  10. GRB 060510: Swift detection of a burst with optical transient
  11. GRB060507: optical afterglow detection
  12. GRB060502B: improvement in the XRT afterglow position
  13. GRB 060507: Final Refined analysis of the Swift-BAT burst
  14. GRB 060507: Swift-BAT Refined Analysis
  15. GRB 060505: PROMPT Observations
  16. GRB 060507: Swift XRT Team Refined Analysis
  17. GRB 060507: Swift detection of a burst
  18. GRB 060429: Suzaku WAM observation
  19. GRB060505: Swift/UVOT Observations
  20. GRB060425: new MASTER survey method
  21. GRB 060306: Further Analysis of SOAR and APO NIR Observations
  22. GRB 060505: Swift XRT afterglow canditate position
  23. GRB 060502b: Second epoch Gemini observations
  24. GRB 060505: Swift-BAT detection of a weak burst
  25. GRB 060428B: spectroscopy
  26. GRB 060502B: optical observations
  27. GRB 060502B: AROMA refined photometric calibration
  28. GRB 060502B MDM Follow-up Observation
  29. GRB 060502b: Gemini imaging and spectroscopy
  30. GRB060502A, optical observation
  31. GRB 060502B: Swift/UVOT upper limits
  32. GRB 060502A: Swift/UVOT source detection
  33. GRB 060502B: MDM Optical Observation
  34. GRB 060502B: Refined analysis of the Swift-BAT short burst
  35. GRB060502B: Swift XRT Team refined analysis
  36. GRB 060501: P60 Observations and Candidate Retraction
  37. GRB 060502B: Xinglong optical observation
  38. GRB060502: Swift-XRT refined analysis
  39. GRB 060502: Swift-BAT refined analysis
  40. GRB060501: Swift UVOT followup observations
  41. GRB 060502: P60 Afterglow Confirmation
  42. GRB 060502: Swift detection of a burst with an optical counterpart
  43. GRB060501: P60 imaging and afterglow candidate
  44. GRB 060501: Refined analysis of the Swift-BAT burst
  45. GRB060428B - SDSS Pre-Burst Observations
  46. GRB060428B: possible detection of an optical counterpart by Swift/UVOT.
  47. GRB 060428B: MDM Observations
  48. GRB060428B: Swift XRT Team refined analysis
  49. GRB 060427B: IPN localization of a short hard burst
  50. GRB 060428B: Refined analysis of the Swift-BAT burst
  51. GRB 060428B: Xinglong I-band limit
  52. GRB 051117A: Bright host galaxy not confirmed
  53. GRB060428A: Swift/UVOT observations.
  54. GRB060428B, optical observation
  55. GRB 060428A: Refined analysis of the Swift-BAT burst
  56. GRB 060428b : Kiso R-band limit
  57. GRB 060428b: Optical afterglow candidate
  58. GRB060428A: Swift XRT Team refined analysis
  59. GRB 060428B: Swift detection of a burst
  60. GRB 060427: NIR observations
  61. GRB060427: Xinglong optical Observations
  62. GRB 060428: Swift detection of a burst
  63. GRB 060427: Swift/UVOT upper limits.
  64. GRB 060427: Refined analysis of the Swift-BAT burst
  65. GRB060427: Swift XRT Team refined analysis
  66. GRB060418: Swift XRT Team Further Refined Analysis
  67. GRB060425:MASTER survey observations
  68. GRB 060427, optical observation
  69. GRB 060427: Swift detection of a burst
  70. GRB060418: Further Analysis of MIKE Spectroscopy
  71. GRB 060424: Refined analysis of the Swift-BAT burst
  72. GRB 060421: TTT Observations
  73. GRB060421: Swift/UVOT observations
  74. GRB 060421: Swift-BAT Refined Analysis
  75. GRB 060421: Swift-XRT refined analysis
  76. GRB 060418: prediction of t_break
  77. GRB(?) 060421: Swift detection of a burst
  78. Erratum of GCN 4983 for GRB 060418 IR follow-up
  79. GRB 060418 : IR afterglow observations
  80. GRB 060418: Radio Observations
  81. GRB060418, BVRcIc field calibration
  82. GRB060418: Swift/UVOT Observations
  83. GRB060418: Optical Observations
  84. GRB 060418: Refined Analysis of the Swift-BAT burst
  85. GRB 060418, SMARTS continuing afterglow observations
  86. GRB 060418, SMARTS optical/IR afterglow observations
  87. GRB060418 : LT optical afterglow observation
  88. GRB 060418: REM candidate afterglow
  89. GRB 060418: Swift detection of a burst with bright x-ray and optical afterglow
  90. GRB060413: Swift/UVOT upper limits
  91. GRB 060413: REM NIR Observations
  92. GRB 060413: Refined analysis of the Swift-BAT burst
  93. GRB 060403: MITSuME optical observation
  94. GRB060403: Optical Limit
  95. GRB060403: XRT refined analysis
  96. GRB 060403: Swift/UVOT upper limits
  97. SGR 1900+14: BAT observations
  98. GRB 060403: Refined analysis of the Swift-BAT burst
  99. Konus-Wind observation of the recent SGR 1900+14 activity. Will
  100. GRB 060403: Swift detection of a burst

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