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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"

39364 results found.

  1. GRB 060502b: Gemini imaging and spectroscopy
  2. GRB060502A, optical observation
  3. GRB 060502B: Swift/UVOT upper limits
  4. GRB 060502A: Swift/UVOT source detection
  5. GRB 060429: Refined IPN error box and Konus-Wind spectrum
  6. GRB 060502B: MDM Optical Observation
  7. GRB 060502B: AROMA optical observations
  8. GRB 060502B: Refined analysis of the Swift-BAT short burst
  9. Short GRB 060502B: Tautenburg Observation
  10. GRB 060427B Milagro GeV/TeV Observations
  11. GRB 060502A: TTT Observations
  12. GRB 060501: P60 Observations and Candidate Retraction
  13. GRB 060502B: Xinglong optical observation
  14. GRB 060502B: MASTER optical observations
  15. GRB 060502B: Swift detection of a short burst
  16. GRB 060502: Swift-BAT refined analysis
  17. GRB060502: Gemini spectroscopy
  18. GRB 060502: APO Spectroscopic Observations
  19. GRB 060502: P60 Afterglow Confirmation
  20. GRB 060502: Swift detection of a burst with an optical counterpart
  21. GRB 060501: MDM Observations
  22. GRB060501: Super-LOTIS observations
  23. GRB 060501: Refined analysis of the Swift-BAT burst
  24. GRB060501: Swift XRT position
  25. GRB 060501: ROTSE-III Optical Limits
  26. GRB 060501: Swift detection of a burst
  27. IPN triangulation of GRB060429 (short/hard)
  28. Konus-Wind observation of GRB 060427B
  29. GRB060428B - SDSS Pre-Burst Observations
  30. GRB060428B: optical observation
  31. GRB060428B: possible detection of an optical counterpart by Swift/UVOT.
  32. GRB 060428B: MDM Observations
  33. GRB 060428A: PROMPT Observations
  34. GRB 060427B: MASTER optical observations
  35. GRB 060427B: IPN localization of a short hard burst
  36. GRB 060428B: Refined analysis of the Swift-BAT burst
  37. GRB 060428B: Xinglong I-band limit
  38. GRB 060428B: KAIT observations
  39. GRB060425:MASTER optical limit
  40. GRB 051117A: Bright host galaxy not confirmed
  41. GRB 060428A: Refined analysis of the Swift-BAT burst
  42. GRB 060428b : Kiso R-band limit
  43. GRB060427:MASTER optical limit
  44. GRB 060428b: Optical afterglow candidate
  45. GRB 060428B: Swift detection of a burst
  46. GRB 060427: NIR observations
  47. GRB 060428: Swift detection of a burst
  48. GRB 060427: NOT observations
  49. GRB 060427: Swift/UVOT upper limits.
  50. GRB 060427: Refined analysis of the Swift-BAT burst
  51. GRB060418: Swift XRT Team Further Refined Analysis
  52. GRB060425:MASTER survey observations
  53. GRB 060427, optical observation
  54. GRB 060427: Swift detection of a burst
  55. GRB 060425: IPN localization and KW spectrum of a short, hard burst
  56. An interactive program for GRB pseudo-redshift computations
  57. GRB060424: optical afterglow detection
  58. GRB060418: Further Analysis of MIKE Spectroscopy
  59. GRB 060424: Refined analysis of the Swift-BAT burst
  60. GRB 060424: Swift detection of a burst
  61. GRB 060421: TTT Observations
  62. No OT 060420 in MASCOT images
  63. Swift-BAT detection of Mrk 421
  64. GRB 060421: Swift-BAT Refined Analysis
  65. GRB 060421: Swift-XRT refined analysis
  66. GRB 060418: prediction of t_break
  67. GRB060418: optical observations
  68. Konus-Wind observation of GRB 060418
  69. GRB(?)060421:MASTER optical limit
  70. GRB(?)060421 : XRT position
  71. Possible GRB060421: BART limits
  72. GRB(?) 060421: Swift detection of a burst
  73. Erratum of GCN 4983 for GRB 060418 IR follow-up
  74. GRB 060418 : IR afterglow observations
  75. GRB 060418 : Lulin Optical follow-up
  76. GRB 060418: JHKs PAIRITEL Observations of Afterglow
  77. GRB 060418: Radio Observations
  78. GRB060418, BVRcIc field calibration
  79. GRB060418: Optical Observations
  80. GRB 060418: FRAM early afterglow observation
  81. GRB 060418: Refined Analysis of the Swift-BAT burst
  82. GRB060418: Swift XRT Team Refined Analysis
  83. GRB 060418, SMARTS continuing afterglow observations
  84. GRB 060418: PROMPT Detections
  85. GRB 060418, SMARTS optical/IR afterglow observations
  86. GRB060418: Magellan/MIKE Spectroscopic Redshift
  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. GRB 060413: REM NIR Observations
  91. SGR 1900+14: Swift detection of an outburst
  92. GRB 060413: Refined analysis of the Swift-BAT burst
  93. GRB 060413: Watcher UBVR observations
  94. GRB 060413: XRT refined analysis
  95. GRB 060413: No Optical Afterglow in Swift/UVOT TDRSS Data
  96. GRB 060413: Swift detection of a burst
  97. GRB060403: optical observations
  98. GRB 060403 Optical observations
  99. GRB 060403: MITSuME optical observation
  100. GRB060403: XRT refined analysis

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