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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"

36366 results found.

  1. GRB 060502B: Swift/UVOT upper limits
  2. GRB 060502A: Swift/UVOT source detection
  3. GRB 060429: Refined IPN error box and Konus-Wind spectrum
  4. GRB 060502B: MDM Optical Observation
  5. GRB 060502B: AROMA optical observations
  6. GRB 060502B: Refined analysis of the Swift-BAT short burst
  7. Short GRB 060502B: Tautenburg Observation
  8. GRB 060427B Milagro GeV/TeV Observations
  9. GRB 060502A: TTT Observations
  10. GRB 060501: P60 Observations and Candidate Retraction
  11. GRB 060502B: Xinglong optical observation
  12. GRB 060502B: MASTER optical observations
  13. GRB 060502B: Swift detection of a short burst
  14. GRB 060502: Swift-BAT refined analysis
  15. GRB060502: Gemini spectroscopy
  16. GRB 060502: APO Spectroscopic Observations
  17. GRB 060502: P60 Afterglow Confirmation
  18. GRB 060502: Swift detection of a burst with an optical counterpart
  19. GRB 060501: MDM Observations
  20. GRB060501: Super-LOTIS observations
  21. GRB 060501: Refined analysis of the Swift-BAT burst
  22. GRB060501: Swift XRT position
  23. GRB 060501: ROTSE-III Optical Limits
  24. GRB 060501: Swift detection of a burst
  25. IPN triangulation of GRB060429 (short/hard)
  26. Konus-Wind observation of GRB 060427B
  27. GRB060428B - SDSS Pre-Burst Observations
  28. GRB060428B: optical observation
  29. GRB060428B: possible detection of an optical counterpart by Swift/UVOT.
  30. GRB 060428B: MDM Observations
  31. GRB 060428A: PROMPT Observations
  32. GRB 060427B: MASTER optical observations
  33. GRB 060427B: IPN localization of a short hard burst
  34. GRB 060428B: Refined analysis of the Swift-BAT burst
  35. GRB 060428B: Xinglong I-band limit
  36. GRB 060428B: KAIT observations
  37. GRB060425:MASTER optical limit
  38. GRB 051117A: Bright host galaxy not confirmed
  39. GRB 060428A: Refined analysis of the Swift-BAT burst
  40. GRB 060428b : Kiso R-band limit
  41. GRB060427:MASTER optical limit
  42. GRB 060428b: Optical afterglow candidate
  43. GRB 060428B: Swift detection of a burst
  44. GRB 060427: NIR observations
  45. GRB 060428: Swift detection of a burst
  46. GRB 060427: NOT observations
  47. GRB 060427: Swift/UVOT upper limits.
  48. GRB 060427: Refined analysis of the Swift-BAT burst
  49. GRB060418: Swift XRT Team Further Refined Analysis
  50. GRB060425:MASTER survey observations
  51. GRB 060427, optical observation
  52. GRB 060427: Swift detection of a burst
  53. GRB 060425: IPN localization and KW spectrum of a short, hard burst
  54. An interactive program for GRB pseudo-redshift computations
  55. GRB060424: optical afterglow detection
  56. GRB060418: Further Analysis of MIKE Spectroscopy
  57. GRB 060424: Refined analysis of the Swift-BAT burst
  58. GRB 060424: Swift detection of a burst
  59. GRB 060421: TTT Observations
  60. GRB 060421: Swift-BAT Refined Analysis
  61. GRB 060421: Swift-XRT refined analysis
  62. GRB 060418: prediction of t_break
  63. GRB060418: optical observations
  64. Konus-Wind observation of GRB 060418
  65. GRB(?)060421:MASTER optical limit
  66. GRB(?)060421 : XRT position
  67. GRB(?) 060421: Swift detection of a burst
  68. Erratum of GCN 4983 for GRB 060418 IR follow-up
  69. GRB 060418 : IR afterglow observations
  70. GRB 060418 : Lulin Optical follow-up
  71. GRB 060418: JHKs PAIRITEL Observations of Afterglow
  72. GRB 060418: Radio Observations
  73. GRB060418, BVRcIc field calibration
  74. GRB060418: Optical Observations
  75. GRB 060418: FRAM early afterglow observation
  76. GRB 060418: Refined Analysis of the Swift-BAT burst
  77. GRB060418: Swift XRT Team Refined Analysis
  78. GRB 060418, SMARTS continuing afterglow observations
  79. GRB 060418: PROMPT Detections
  80. GRB 060418, SMARTS optical/IR afterglow observations
  81. GRB060418: Magellan/MIKE Spectroscopic Redshift
  82. GRB060418 : LT optical afterglow observation
  83. GRB 060418: REM candidate afterglow
  84. GRB 060418: Swift detection of a burst with bright x-ray and optical afterglow
  85. GRB 060413: REM NIR Observations
  86. GRB 060413: Refined analysis of the Swift-BAT burst
  87. GRB 060413: Watcher UBVR observations
  88. GRB 060413: XRT refined analysis
  89. GRB 060413: No Optical Afterglow in Swift/UVOT TDRSS Data
  90. GRB 060413: Swift detection of a burst
  91. GRB060403: optical observations
  92. GRB 060403 Optical observations
  93. GRB 060403: MITSuME optical observation
  94. GRB060403: XRT refined analysis
  95. GRB 060403: Swift/UVOT upper limits
  96. GRB 060403: Refined analysis of the Swift-BAT burst
  97. GRB 060403: Swift detection of a burst
  98. GRB 060322: LNA optical limit
  99. GRB 060218SN 2006aj: optical observations at Rozhen Observatory
  100. GRB 060323 : WIDGET simultaneous optical observations

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