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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"

36398 results found.

  1. GRB 060418 : IR afterglow observations
  2. GRB 060418 : Lulin Optical follow-up
  3. GRB 060418: JHKs PAIRITEL Observations of Afterglow
  4. GRB 060418: Radio Observations
  5. GRB060418, BVRcIc field calibration
  6. GRB060418: Optical Observations
  7. GRB 060418: FRAM early afterglow observation
  8. GRB 060418: Refined Analysis of the Swift-BAT burst
  9. GRB060418: Swift XRT Team Refined Analysis
  10. GRB 060418, SMARTS continuing afterglow observations
  11. GRB 060418: PROMPT Detections
  12. GRB 060418, SMARTS optical/IR afterglow observations
  13. GRB060418: Magellan/MIKE Spectroscopic Redshift
  14. GRB060418 : LT optical afterglow observation
  15. GRB 060418: REM candidate afterglow
  16. GRB 060418: Swift detection of a burst with bright x-ray and optical afterglow
  17. GRB 060413: REM NIR Observations
  18. GRB 060413: Refined analysis of the Swift-BAT burst
  19. GRB 060413: Watcher UBVR observations
  20. GRB 060413: XRT refined analysis
  21. GRB 060413: No Optical Afterglow in Swift/UVOT TDRSS Data
  22. GRB 060413: Swift detection of a burst
  23. GRB060403: optical observations
  24. GRB 060403 Optical observations
  25. GRB 060403: MITSuME optical observation
  26. GRB060403: XRT refined analysis
  27. GRB 060403: Swift/UVOT upper limits
  28. GRB 060403: Refined analysis of the Swift-BAT burst
  29. GRB 060403: Swift detection of a burst
  30. GRB 060322: LNA optical limit
  31. GRB 060218SN 2006aj: optical observations at Rozhen Observatory
  32. GRB 060323 : WIDGET simultaneous optical observations
  33. GRB 060323: Early optical observation at Xinglong
  34. GRB060218, optical observations
  35. GRB 060322: Confirmation of Swift XRT afterglow
  36. GRB 060211A: optical observation
  37. GRB060323: optical limit
  38. GRB060211B: optical observation
  39. GRB060323: NOT optical observations
  40. GRB 060322: IAC80 optical observations
  41. GRB 060322: Swift XRT afterglow candidate
  42. GRB 060323: Swift/UVOT Observations
  43. GRB 060323: optical afterglow confirmed
  44. GRB060323: NOT observations
  45. GRB 060323: Optical Observations
  46. GRB 060323: Tautenburg OT candidate retraction
  47. GRB 060323: Refined analysis of the Swift-BAT burst
  48. GRB 060323: optical observations at TNG
  49. GRB 060323: Swift XRT refined analysis
  50. GRB 060323: BVRI observations at Tautenburg, aftreglow candidate
  51. GRB 060323: Swift/XRT position
  52. GRB 060322: Refined analysis of the Swift-BAT burst
  53. GRB060323 - SDSS Pre-Burst Observations
  54. GRB 060323: Swift detection of a burst with a possible optical afterglow
  55. GRB 060322: Swift-BAT detection of a 200-sec burst
  56. GRB060219: optical observation
  57. GRB060206: optical observation
  58. GRB060218/SN2006aj: optical observations
  59. GRB 060218/SN 2006aj, LNA optical observation
  60. GRB060218: Refined photometric calibration of comparison stars
  61. GRB 060319: WHT K-band candidate afterglow
  62. GRB 060319: IAC-80 optical observations
  63. GRB060319: Swift XRT refined analysis
  64. GRB 060319: Re-analysis of TNG data
  65. GRB060319: MASTER limit
  66. GRB 060319: Swift-BAT refined analysis
  67. GRB 060319 optical observations at TNG
  68. GRB060319 : Liverpool Telescope optical limit
  69. GRB060319: MASTER optical observation
  70. GRB060319 - SDSS Pre-burst Observations
  71. GRB 060319: Swift detection of a burst
  72. GRB060313: Radio Observations
  73. GRB 060313: early afterglow NIR upper limits with REM
  74. IBAS Alert n. 3221: not a GRB
  75. Konus-Wind observation of GRB 060313
  76. GRB060313: SSO 40inch Observations
  77. GRB 060313: Further analysis of the Swift-BAT bright short hard burst
  78. GRB 060313: PROMPT Observations
  79. GRB 060313: Swift/UVOT Observations
  80. GRB060313:Gemini South Observations
  81. GRB 060313: Swift-XRT team refined analysis
  82. GRB060313: optical observations of the afterglow candidate
  83. GRB 060313: Refined analysis of the Swift-BAT bright short hard burst
  84. GRB 060313, SMARTS optical counterpart?
  85. GRB 060313: Possible optical counterpart
  86. GRB 060313: Swift XRT position
  87. GRB 060313, SMARTS optical/IR observations
  88. GRB060313: optical and near infrared observations with REM
  89. GRB 060313: Swift-BAT detection of a bright short hard burst
  90. GRB060218: SARA Observations of SN2006aj
  91. GRB 060312: Refined analysis of the Swift-BAT burst
  92. GRB 060218/SN 2006aj, high resolution spectra
  93. GRB 060312: Swift XRT team refined analysis
  94. GRB060306: APO Ks-band Imaging Observations
  95. GRB 060312: ROTSE-III Optical Limits
  96. GRB 060312: Swift detection of a burst
  97. IBAS Alert n. 3218 : not a real GRB
  98. GRB 060306: SOAR Ks Observations
  99. Bright short hard GRB 060303: IPN localization and Konus spectrum
  100. GRB 060306: MAGNUM observations

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