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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"

36197 results found.

  1. Konus-Wind observation of GRB 060418
  2. GRB(?)060421:MASTER optical limit
  3. GRB(?)060421 : XRT position
  4. GRB(?) 060421: Swift detection of a burst
  5. Erratum of GCN 4983 for GRB 060418 IR follow-up
  6. GRB 060418 : IR afterglow observations
  7. GRB 060418 : Lulin Optical follow-up
  8. GRB 060418: JHKs PAIRITEL Observations of Afterglow
  9. GRB 060418: Radio Observations
  10. GRB060418, BVRcIc field calibration
  11. GRB060418: Optical Observations
  12. GRB 060418: FRAM early afterglow observation
  13. GRB 060418: Refined Analysis of the Swift-BAT burst
  14. GRB060418: Swift XRT Team Refined Analysis
  15. GRB 060418, SMARTS continuing afterglow observations
  16. GRB 060418: PROMPT Detections
  17. GRB 060418, SMARTS optical/IR afterglow observations
  18. GRB060418: Magellan/MIKE Spectroscopic Redshift
  19. GRB060418 : LT optical afterglow observation
  20. GRB 060418: REM candidate afterglow
  21. GRB 060418: Swift detection of a burst with bright x-ray and optical afterglow
  22. GRB 060413: REM NIR Observations
  23. GRB 060413: Refined analysis of the Swift-BAT burst
  24. GRB 060413: Watcher UBVR observations
  25. GRB 060413: XRT refined analysis
  26. GRB 060413: No Optical Afterglow in Swift/UVOT TDRSS Data
  27. GRB 060413: Swift detection of a burst
  28. GRB060403: optical observations
  29. GRB 060403 Optical observations
  30. GRB 060403: MITSuME optical observation
  31. GRB060403: XRT refined analysis
  32. GRB 060403: Swift/UVOT upper limits
  33. GRB 060403: Refined analysis of the Swift-BAT burst
  34. GRB 060403: Swift detection of a burst
  35. GRB 060322: LNA optical limit
  36. GRB 060218SN 2006aj: optical observations at Rozhen Observatory
  37. GRB 060323 : WIDGET simultaneous optical observations
  38. GRB 060323: Early optical observation at Xinglong
  39. GRB060218, optical observations
  40. GRB 060322: Confirmation of Swift XRT afterglow
  41. GRB 060211A: optical observation
  42. GRB060323: optical limit
  43. GRB060211B: optical observation
  44. GRB060323: NOT optical observations
  45. GRB 060322: IAC80 optical observations
  46. GRB 060322: Swift XRT afterglow candidate
  47. GRB 060323: Swift/UVOT Observations
  48. GRB 060323: optical afterglow confirmed
  49. GRB060323: NOT observations
  50. GRB 060323: Optical Observations
  51. GRB 060323: Tautenburg OT candidate retraction
  52. GRB 060323: Refined analysis of the Swift-BAT burst
  53. GRB 060323: optical observations at TNG
  54. GRB 060323: Swift XRT refined analysis
  55. GRB 060323: BVRI observations at Tautenburg, aftreglow candidate
  56. GRB 060323: Swift/XRT position
  57. GRB 060322: Refined analysis of the Swift-BAT burst
  58. GRB060323 - SDSS Pre-Burst Observations
  59. GRB 060323: Swift detection of a burst with a possible optical afterglow
  60. GRB 060322: Swift-BAT detection of a 200-sec burst
  61. GRB060219: optical observation
  62. GRB060206: optical observation
  63. GRB060218/SN2006aj: optical observations
  64. GRB 060218/SN 2006aj, LNA optical observation
  65. GRB060218: Refined photometric calibration of comparison stars
  66. GRB 060319: WHT K-band candidate afterglow
  67. GRB 060319: IAC-80 optical observations
  68. GRB060319: Swift XRT refined analysis
  69. GRB 060319: Re-analysis of TNG data
  70. GRB060319: MASTER limit
  71. GRB 060319: Swift-BAT refined analysis
  72. GRB 060319 optical observations at TNG
  73. GRB060319 : Liverpool Telescope optical limit
  74. GRB060319: MASTER optical observation
  75. GRB060319 - SDSS Pre-burst Observations
  76. GRB 060319: Swift detection of a burst
  77. GRB060313: Radio Observations
  78. GRB 060313: early afterglow NIR upper limits with REM
  79. IBAS Alert n. 3221: not a GRB
  80. Konus-Wind observation of GRB 060313
  81. GRB060313: SSO 40inch Observations
  82. GRB 060313: Further analysis of the Swift-BAT bright short hard burst
  83. GRB 060313: PROMPT Observations
  84. GRB 060313: Swift/UVOT Observations
  85. GRB060313:Gemini South Observations
  86. GRB 060313: Swift-XRT team refined analysis
  87. GRB060313: optical observations of the afterglow candidate
  88. GRB 060313: Refined analysis of the Swift-BAT bright short hard burst
  89. GRB 060313, SMARTS optical counterpart?
  90. GRB 060313: Possible optical counterpart
  91. GRB 060313: Swift XRT position
  92. GRB 060313, SMARTS optical/IR observations
  93. GRB060313: optical and near infrared observations with REM
  94. GRB 060313: Swift-BAT detection of a bright short hard burst
  95. GRB060218: SARA Observations of SN2006aj
  96. GRB 060312: Refined analysis of the Swift-BAT burst
  97. GRB 060218/SN 2006aj, high resolution spectra
  98. GRB 060312: Swift XRT team refined analysis
  99. GRB060306: APO Ks-band Imaging Observations
  100. GRB 060312: ROTSE-III Optical Limits

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