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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').
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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"

36185 results found.

  1. GRB 060510: Swift detection of a burst with optical transient
  2. GRB060507: optical afterglow detection
  3. GRB060502B: improvement in the XRT afterglow position
  4. GRB 060507: BART limit
  5. GRB 060507: Final Refined analysis of the Swift-BAT burst
  6. GRB 060507: Swift-BAT Refined Analysis
  7. GRB 060505: PROMPT Observations
  8. GRB 060507: Swift/UVOT Upper Limits
  9. GRB 060507: Swift XRT Team Refined Analysis
  10. GRB 060507: MDM Optical Upper Limit
  11. GRB060507: Swift XRT position
  12. GRB 060507: Swift detection of a burst
  13. GRB 060429: Suzaku WAM observation
  14. GRB 060505: Swift XRT Team Refined Analysis
  15. GRB060425: new MASTER survey method
  16. GRB 060306: Further Analysis of SOAR and APO NIR Observations
  17. GRB 060505: Swift XRT afterglow canditate position
  18. GRB 060502b: Second epoch Gemini observations
  19. GRB 060505: Swift-BAT detection of a weak burst
  20. GRB 060428B: spectroscopy
  21. GRB 060502B: optical observations
  22. GRB 060502B: AROMA refined photometric calibration
  23. GRB 060502B MDM Follow-up Observation
  24. GRB 060502b: Gemini imaging and spectroscopy
  25. GRB060502A, optical observation
  26. GRB 060502B: Swift/UVOT upper limits
  27. GRB 060502A: Swift/UVOT source detection
  28. GRB 060429: Refined IPN error box and Konus-Wind spectrum
  29. GRB 060502B: MDM Optical Observation
  30. GRB 060502B: AROMA optical observations
  31. GRB 060502B: Refined analysis of the Swift-BAT short burst
  32. Short GRB 060502B: Tautenburg Observation
  33. GRB 060427B Milagro GeV/TeV Observations
  34. GRB 060502A: TTT Observations
  35. GRB 060501: P60 Observations and Candidate Retraction
  36. GRB 060502B: Xinglong optical observation
  37. GRB 060502B: MASTER optical observations
  38. GRB 060502B: Swift detection of a short burst
  39. GRB 060502: Swift-BAT refined analysis
  40. GRB060502: Gemini spectroscopy
  41. GRB 060502: APO Spectroscopic Observations
  42. GRB 060502: P60 Afterglow Confirmation
  43. GRB 060502: Swift detection of a burst with an optical counterpart
  44. GRB 060501: MDM Observations
  45. GRB060501: Super-LOTIS observations
  46. GRB 060501: Refined analysis of the Swift-BAT burst
  47. GRB060501: Swift XRT position
  48. GRB 060501: ROTSE-III Optical Limits
  49. GRB 060501: Swift detection of a burst
  50. IPN triangulation of GRB060429 (short/hard)
  51. Konus-Wind observation of GRB 060427B
  52. GRB060428B - SDSS Pre-Burst Observations
  53. GRB060428B: optical observation
  54. GRB060428B: possible detection of an optical counterpart by Swift/UVOT.
  55. GRB 060428B: MDM Observations
  56. GRB 060428A: PROMPT Observations
  57. GRB 060427B: MASTER optical observations
  58. GRB 060427B: IPN localization of a short hard burst
  59. GRB 060428B: Refined analysis of the Swift-BAT burst
  60. GRB 060428B: Xinglong I-band limit
  61. GRB 060428B: KAIT observations
  62. GRB060425:MASTER optical limit
  63. GRB 051117A: Bright host galaxy not confirmed
  64. GRB 060428A: Refined analysis of the Swift-BAT burst
  65. GRB 060428b : Kiso R-band limit
  66. GRB060427:MASTER optical limit
  67. GRB 060428b: Optical afterglow candidate
  68. GRB 060428B: Swift detection of a burst
  69. GRB 060427: NIR observations
  70. GRB 060428: Swift detection of a burst
  71. GRB 060427: NOT observations
  72. GRB 060427: Swift/UVOT upper limits.
  73. GRB 060427: Refined analysis of the Swift-BAT burst
  74. GRB060418: Swift XRT Team Further Refined Analysis
  75. GRB060425:MASTER survey observations
  76. GRB 060427, optical observation
  77. GRB 060427: Swift detection of a burst
  78. GRB 060425: IPN localization and KW spectrum of a short, hard burst
  79. An interactive program for GRB pseudo-redshift computations
  80. GRB060424: optical afterglow detection
  81. GRB060418: Further Analysis of MIKE Spectroscopy
  82. GRB 060424: Refined analysis of the Swift-BAT burst
  83. GRB 060424: Swift detection of a burst
  84. GRB 060421: TTT Observations
  85. GRB 060421: Swift-BAT Refined Analysis
  86. GRB 060421: Swift-XRT refined analysis
  87. GRB 060418: prediction of t_break
  88. GRB060418: optical observations
  89. Konus-Wind observation of GRB 060418
  90. GRB(?)060421:MASTER optical limit
  91. GRB(?)060421 : XRT position
  92. GRB(?) 060421: Swift detection of a burst
  93. Erratum of GCN 4983 for GRB 060418 IR follow-up
  94. GRB 060418 : IR afterglow observations
  95. GRB 060418 : Lulin Optical follow-up
  96. GRB 060418: JHKs PAIRITEL Observations of Afterglow
  97. GRB 060418: Radio Observations
  98. GRB060418, BVRcIc field calibration
  99. GRB060418: Optical Observations
  100. GRB 060418: FRAM early afterglow observation

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