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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"

37570 results found.

  1. GRB 060306: Further Analysis of SOAR and APO NIR Observations
  2. GRB 060505: Swift XRT afterglow canditate position
  3. GRB 060502b: Second epoch Gemini observations
  4. GRB 060505: Swift-BAT detection of a weak burst
  5. GRB 060428B: spectroscopy
  6. GRB 060502B: optical observations
  7. GRB 060502B: AROMA refined photometric calibration
  8. GRB 060502B MDM Follow-up Observation
  9. GRB 060502b: Gemini imaging and spectroscopy
  10. GRB060502A, optical observation
  11. GRB 060502B: Swift/UVOT upper limits
  12. GRB 060502A: Swift/UVOT source detection
  13. GRB 060429: Refined IPN error box and Konus-Wind spectrum
  14. GRB 060502B: MDM Optical Observation
  15. GRB 060502B: AROMA optical observations
  16. GRB 060502B: Refined analysis of the Swift-BAT short burst
  17. Short GRB 060502B: Tautenburg Observation
  18. GRB 060427B Milagro GeV/TeV Observations
  19. GRB 060502A: TTT Observations
  20. GRB 060501: P60 Observations and Candidate Retraction
  21. GRB 060502B: Xinglong optical observation
  22. GRB 060502B: MASTER optical observations
  23. GRB 060502B: Swift detection of a short burst
  24. GRB 060502: Swift-BAT refined analysis
  25. GRB060502: Gemini spectroscopy
  26. GRB 060502: APO Spectroscopic Observations
  27. GRB 060502: P60 Afterglow Confirmation
  28. GRB 060502: Swift detection of a burst with an optical counterpart
  29. GRB 060501: MDM Observations
  30. GRB060501: Super-LOTIS observations
  31. GRB 060501: Refined analysis of the Swift-BAT burst
  32. GRB060501: Swift XRT position
  33. GRB 060501: ROTSE-III Optical Limits
  34. GRB 060501: Swift detection of a burst
  35. IPN triangulation of GRB060429 (short/hard)
  36. Konus-Wind observation of GRB 060427B
  37. GRB060428B - SDSS Pre-Burst Observations
  38. GRB060428B: optical observation
  39. GRB060428B: possible detection of an optical counterpart by Swift/UVOT.
  40. GRB 060428B: MDM Observations
  41. GRB 060428A: PROMPT Observations
  42. GRB 060427B: MASTER optical observations
  43. GRB 060427B: IPN localization of a short hard burst
  44. GRB 060428B: Refined analysis of the Swift-BAT burst
  45. GRB 060428B: Xinglong I-band limit
  46. GRB 060428B: KAIT observations
  47. GRB060425:MASTER optical limit
  48. GRB 051117A: Bright host galaxy not confirmed
  49. GRB 060428A: Refined analysis of the Swift-BAT burst
  50. GRB 060428b : Kiso R-band limit
  51. GRB060427:MASTER optical limit
  52. GRB 060428b: Optical afterglow candidate
  53. GRB 060428B: Swift detection of a burst
  54. GRB 060427: NIR observations
  55. GRB 060428: Swift detection of a burst
  56. GRB 060427: NOT observations
  57. GRB 060427: Swift/UVOT upper limits.
  58. GRB 060427: Refined analysis of the Swift-BAT burst
  59. GRB060418: Swift XRT Team Further Refined Analysis
  60. GRB060425:MASTER survey observations
  61. GRB 060427, optical observation
  62. GRB 060427: Swift detection of a burst
  63. GRB 060425: IPN localization and KW spectrum of a short, hard burst
  64. An interactive program for GRB pseudo-redshift computations
  65. GRB060424: optical afterglow detection
  66. GRB060418: Further Analysis of MIKE Spectroscopy
  67. GRB 060424: Refined analysis of the Swift-BAT burst
  68. GRB 060424: Swift detection of a burst
  69. GRB 060421: TTT Observations
  70. GRB 060421: Swift-BAT Refined Analysis
  71. GRB 060421: Swift-XRT refined analysis
  72. GRB 060418: prediction of t_break
  73. GRB060418: optical observations
  74. Konus-Wind observation of GRB 060418
  75. GRB(?)060421:MASTER optical limit
  76. GRB(?)060421 : XRT position
  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 : Lulin Optical follow-up
  81. GRB 060418: JHKs PAIRITEL Observations of Afterglow
  82. GRB 060418: Radio Observations
  83. GRB060418, BVRcIc field calibration
  84. GRB060418: Optical Observations
  85. GRB 060418: FRAM early afterglow observation
  86. GRB 060418: Refined Analysis of the Swift-BAT burst
  87. GRB060418: Swift XRT Team Refined Analysis
  88. GRB 060418, SMARTS continuing afterglow observations
  89. GRB 060418: PROMPT Detections
  90. GRB 060418, SMARTS optical/IR afterglow observations
  91. GRB060418: Magellan/MIKE Spectroscopic Redshift
  92. GRB060418 : LT optical afterglow observation
  93. GRB 060418: REM candidate afterglow
  94. GRB 060418: Swift detection of a burst with bright x-ray and optical afterglow
  95. GRB 060413: REM NIR Observations
  96. GRB 060413: Refined analysis of the Swift-BAT burst
  97. GRB 060413: Watcher UBVR observations
  98. GRB 060413: XRT refined analysis
  99. GRB 060413: No Optical Afterglow in Swift/UVOT TDRSS Data
  100. GRB 060413: Swift detection of a burst

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