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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"

32551 results found.

  1. GRB 071112C: Optical and NIR afterglows observed with KANATA
  2. GRB 071112C: ROTSE-III Confirmation of Optical Counterpart
  3. GRB 071112B: ROTSE-III Rapid Optical Limits
  4. GRB071109: Super-LOTIS observations
  5. VLA IInd observation of INTEGRAL burst GRB 071109
  6. Swift/UVOT initial analysis of GRB071109
  7. GRB 071109: further Swift-XRT analysis
  8. No radio detection at Swift-XRT position
  9. GRB 071109: Swift-XRT possible X-ray counterpart
  10. VLA prompt radio detection of the INTEGRAL burst 071109
  11. GRB 071109: IBIS refined analysis
  12. GRB 071109: BOOTES-2 prompt optical observations
  13. GRB 071104: Swift-XRT Team Refined Analysis
  14. GRB 071104: Possible Swift UVOT Afterglow Candidate
  15. GRB 071104: Swift-XRT position
  16. GRB071010b: optical observation
  17. Swift XRT and UVOT observations of GRB071028B
  18. GRB 071101, Swift-BAT refined analysis
  19. GRB 071101: Swift-XRT Team refined analysis
  20. GRB071101: Optical and NIR upper limits by KANATA
  21. GRB0711101: Two new source from Xinglong TNT observation
  22. GRB 071101: TAROT Calern observatory optical observations
  23. GRB 071101: Swift XRT position
  24. GRB 071101: BOOTES-2 prompt optical observations
  25. GRB 071101: a nearby galaxy
  26. GRB 071031, Swift-BAT refined analysis
  27. GRB 071031: Swift/UVOT detection of afterglow
  28. GRB 071031: Swift-XRT Team refined analysis
  29. GRB 071020: MITSuME Akeno optical observations
  30. GRB 071031: REM NIR and Optical observation
  31. GRB 071031, SMARTS afterglow observations
  32. GRB 071031: VLT high-resolution spectroscopy
  33. GRB071031: Rapid PROMPT Detections
  34. GRB 071028B Swift-BAT detection of a burst
  35. GRB071025: Optical+NIR observations
  36. GRB 071028: SARA observations of variable source
  37. Swift UVOT upper limits to GRB071028
  38. GRB 071028: Swift-XRT Team refined analysis
  39. GRB 071028, Swift-BAT refined analysis
  40. GRB 071025: Kuiper Telescope Optical Observations
  41. GRB 071003: Infrared Photometry with Keck Adaptive Optics
  42. GRB 071018: Revised BAT position
  43. GRB 071025A: RAPTOR Observations of Complex Early Optical Behavior
  44. GRB071021: MARGE Optical Limits
  45. GRB071020, optical upper limit
  46. GRB 071025: SARA VRI upper limits
  47. GRB 071025 Milagro GeV/TeV Observations
  48. GRB071025: Optical Pre-imaging from Palomar
  49. Swift UVOT upper limits
  50. GRB071025: Xinglong TNT I-band upper limit
  51. GRB 071025: Swift-XRT Team refined analysis
  52. GRB 071025, Swift-BAT refined analysis
  53. GRB 071025: Early Super-LOTIS Observations
  54. GRB 071025: R/I-band update
  55. GRB071021 : CFHT Ks-band observation
  56. GRB 071025: ROTSE-III Refined Analysis
  57. GRB 071025: Swift XRT refined position
  58. GRB 071025a: PAIRITEL observations
  59. GRB071025: REM NIR afterglow
  60. GRB 071025: ROTSE-III Detection of Optical Counterpart
  61. GRB 071021: R-band detection and analysis
  62. GRB 071020: BTA spectroscopy
  63. GRB071021: Optical+NIR observations
  64. Possible radio detection of GRB 071021 with the VLA
  65. Optical observations of GRB 071020
  66. GRB 071021: (Relatively shallow) IR non-detections; motivation for optical spectroscopy
  67. GRB 071020: SARA observations
  68. Radio detection of GRB 071020 with the VLA
  69. GRB071010b: optical observation
  70. GRB 071021: Subaru NIR observation
  71. GRB 071021: Magellan i-band observation
  72. GRB 071021: Z-band detection
  73. GRB 071020: Fading slowly?
  74. GRB 071010B: Fading quickly
  75. GRB 071021: optical and NIR observations
  76. GRB 071021: possible high-z burst
  77. GRB 071021, Swift-BAT refined analysis
  78. GRB071018: 2nd epoch obsevations of Xinglong TNT
  79. GRB 071021: retraction of Faulkes Telescope South candidate
  80. GRB 071021: Swift-XRT Team refined analysis
  81. GRB 071021: Xinglong TNT optical Upper Limit
  82. GRB 071021 : Lulin R-band limit
  83. Konus-Wind observation of GRB 071020
  84. GRB 071021: Faulkes Telescope South optical candidate
  85. GRB 071010B: Independent Confirmation of Break
  86. GRB071020A: Xinglong TNT Optical afterglow observations
  87. GRB 071020: Swift-XRT refined analysis
  88. GRB 071020, Swift-BAT refined analysis
  89. GRB 071020A: IR Imaging with PAIRITEL
  90. GRB 071020: VLT spectroscopy
  91. GRB 071020: ROTSE-III Analysis of Optical Counterpart
  92. GRB 071020A: ROTSE-III Detection of Optical Counterpart
  93. Swift autonomous slewing re-enabled
  94. GRB071010b: optical observations
  95. GRB 071018: SARA observations
  96. GRB 071018: Swift-XRT observation
  97. GRB 071017 - Swift XRT observations
  98. VLA radio observation of GRB 071018
  99. GRB071018: Correction to the GCN 6936
  100. GRB071018: Correction to the GCN 6936

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