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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"

42879 results found.

  1. GRB060418: optical observations
  2. GRB 060428a, SMARTS optical/IR afterglow detection
  3. GRB060510B: Swift XRT refined analysis
  4. GRB 060510B: Swift-BAT Refined Analysis
  5. GRB060510A: XRT refined analysis
  6. GRB060510 - SDSS Pre-Burst Observations
  7. GRB060510B : Faulkes North Telescope detection
  8. GRB 060510b: Gemini NIR observations
  9. GRB 060510B: Super-LOTIS Observations
  10. GRB 060510b: NIR observations
  11. GRB 060510B: Coordinate correction
  12. GRB 060510B: MDM Observations and candidate OT
  13. GRB 060510B: Swift detection of a burst
  14. GRB 060510: Swift detection of a burst with optical transient
  15. GRB060507: optical afterglow detection
  16. GRB060502B: improvement in the XRT afterglow position
  17. GRB 060507: BART limit
  18. GRB 060507: Swift-BAT Refined Analysis
  19. GRB 060505: PROMPT Observations
  20. GRB 060507: Swift/UVOT Upper Limits
  21. GRB 060507: Swift XRT Team Refined Analysis
  22. GRB 060507: MDM Optical Upper Limit
  23. GRB060507: Swift XRT position
  24. GRB 060507: Swift detection of a burst
  25. GRB 060429: Suzaku WAM observation
  26. GRB060505: Swift/UVOT Observations
  27. GRB 060505: Swift XRT Team Refined Analysis
  28. GRB060425: new MASTER survey method
  29. GRB 060306: Further Analysis of SOAR and APO NIR Observations
  30. GRB 060505: Swift XRT afterglow canditate position
  31. GRB 060502b: Second epoch Gemini observations
  32. GRB 060505: Swift-BAT detection of a weak burst
  33. GRB 060502B: optical observations
  34. GRB 060502B: AROMA refined photometric calibration
  35. GRB 060502B MDM Follow-up Observation
  36. GRB 060502b: Gemini imaging and spectroscopy
  37. GRB060502A, optical observation
  38. GRB 060502B: Swift/UVOT upper limits
  39. GRB 060502A: Swift/UVOT source detection
  40. GRB 060429: Refined IPN error box and Konus-Wind spectrum
  41. GRB 060502B: MDM Optical Observation
  42. GRB 060502B: Refined analysis of the Swift-BAT short burst
  43. Short GRB 060502B: Tautenburg Observation
  44. GRB 060427B Milagro GeV/TeV Observations
  45. GRB 060502A: TTT Observations
  46. GRB 060501: P60 Observations and Candidate Retraction
  47. GRB 060502B: Xinglong optical observation
  48. GRB 060502B: MASTER optical observations
  49. GRB 060502B: Swift detection of a short burst
  50. GRB060502: Swift-XRT refined analysis
  51. GRB 060502: Swift-BAT refined analysis
  52. GRB060502: Gemini spectroscopy
  53. GRB 060502: APO Spectroscopic Observations
  54. GRB060502: Super-LOTIS Observations
  55. GRB 060502: P60 Afterglow Confirmation
  56. GRB 060502: Swift detection of a burst with an optical counterpart
  57. GRB 060501: MDM Observations
  58. GRB060501: Super-LOTIS observations
  59. GRB060501: P60 imaging and afterglow candidate
  60. GRB 060501: Refined analysis of the Swift-BAT burst
  61. GRB060501: Swift XRT position
  62. GRB 060501: Swift detection of a burst
  63. IPN triangulation of GRB060429 (short/hard)
  64. Konus-Wind observation of GRB 060427B
  65. GRB060428B - SDSS Pre-Burst Observations
  66. GRB060428B: optical observation
  67. GRB060428B: possible detection of an optical counterpart by Swift/UVOT.
  68. GRB 060428B: MDM Observations
  69. GRB 060428A: PROMPT Observations
  70. GRB 060427B: MASTER optical observations
  71. GRB060428B: Swift XRT Team refined analysis
  72. GRB 060427B: IPN localization of a short hard burst
  73. GRB 060428B: Refined analysis of the Swift-BAT burst
  74. GRB 060428B: KAIT observations
  75. GRB060425:MASTER optical limit
  76. GRB 051117A: Bright host galaxy not confirmed
  77. GRB 060428A: Refined analysis of the Swift-BAT burst
  78. GRB 060428b : Kiso R-band limit
  79. GRB 060428b: Optical afterglow candidate
  80. GRB060428A: Swift XRT Team refined analysis
  81. GRB 060428B: Swift detection of a burst
  82. GRB 060427: NIR observations
  83. GRB060427: Xinglong optical Observations
  84. GRB 060428: Swift detection of a burst
  85. GRB 060427: NOT observations
  86. GRB 060427: Refined analysis of the Swift-BAT burst
  87. GRB060427: Swift XRT Team refined analysis
  88. GRB060418: Swift XRT Team Further Refined Analysis
  89. GRB 060427: Swift detection of a burst
  90. GRB 060425: IPN localization and KW spectrum of a short, hard burst
  91. An interactive program for GRB pseudo-redshift computations
  92. GRB060424: optical afterglow detection
  93. GRB060418: Further Analysis of MIKE Spectroscopy
  94. GRB 060424: Refined analysis of the Swift-BAT burst
  95. GRB 060424: Swift detection of a burst
  96. GRB 060421: TTT Observations
  97. OT 060420: Likely Not a New Cosmic Transient
  98. No OT 060420 in MASCOT images
  99. Swift-BAT detection of Mrk 421
  100. OT 060420: CONCAM detection of a candidate new magnitude 5 optical

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