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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"

32717 results found.

  1. GRB060418: optical observations
  2. Konus-Wind observation of GRB 060418
  3. Possible GRB060421: BART limits
  4. Erratum of GCN 4983 for GRB 060418 IR follow-up
  5. GRB 060418 : IR afterglow observations
  6. GRB 060418 : Lulin Optical follow-up
  7. GRB 060418: JHKs PAIRITEL Observations of Afterglow
  8. GRB 060418: Radio Observations
  9. GRB060418, BVRcIc field calibration
  10. GRB060418: Swift/UVOT Observations
  11. GRB060418: Optical Observations
  12. GRB 060418: FRAM early afterglow observation
  13. GRB 060418: Refined Analysis of the Swift-BAT burst
  14. VLT/UVES observations of GRB060418
  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. SGR 1900+14: Refined analysis of the Swift-BAT outburst
  22. GRB060413: Swift/UVOT upper limits
  23. GRB 060413: REM NIR Observations
  24. GRB 060413: Refined analysis of the Swift-BAT burst
  25. GRB 060413: Watcher UBVR observations
  26. GRB 060413: XRT refined analysis
  27. GRB 060413: No Optical Afterglow in Swift/UVOT TDRSS Data
  28. GRB 060413: Swift detection of a burst
  29. GRB060403: optical observations
  30. GRB 060403 Optical observations
  31. GRB 060403: MITSuME optical observation
  32. GRB060403: Optical Limit
  33. GRB060403: XRT refined analysis
  34. GRB 060403: Swift/UVOT upper limits
  35. SGR 1900+14: BAT observations
  36. GRB 060403: Refined analysis of the Swift-BAT burst
  37. GRB060403: Swift XRT refined position
  38. Konus-Wind observation of the recent SGR 1900+14 activity. Will
  39. HETE trigger H4044: RTT150 optical observations
  40. GRB060331: Swift/UVOT upper limits
  41. H4044, a Repeat Outburst From The Source of H4043 (="GRB060331")
  42. Swift XRT observations of the HETE transient H4043
  43. HETE Trigger 4043: ROTSE-III Optical Limits
  44. H4043, an unusual high-energy transient observed by HETE
  45. GRB 060322: LNA optical limit
  46. SGR 1900+14: bright burst detected by Konus-Wind on March 28
  47. INTEGRAL and XMM ToO observations of SGR1900+14
  48. GRB 060218SN 2006aj: optical observations at Rozhen Observatory
  49. GRB 060323 : WIDGET simultaneous optical observations
  50. GRB 060323: Early optical observation at Xinglong
  51. GRB060218, optical observations
  52. GRB 060322: Confirmation of Swift XRT afterglow
  53. GRB 060211A: optical observation
  54. GRB060323: optical limit
  55. GRB060211B: optical observation
  56. SGR 1900+14: CORRECTION to GCN 4923
  57. SGR 1900+14: Refined Swift-BAT analysis of the renewed activity
  58. GRB060323: NOT optical observations
  59. GRB 060322: Swift XRT afterglow candidate
  60. GRB060323: P60 Observations
  61. GRB 060323: Swift/UVOT Observations
  62. GRB 060323: optical afterglow confirmed
  63. GRB060323: NOT observations
  64. GRB 060323: Optical Observations
  65. GRB 060323: Tautenburg OT candidate retraction
  66. GRB 060323: Refined analysis of the Swift-BAT burst
  67. GRB 060323: optical observations at TNG
  68. GRB 060323: Swift XRT refined analysis
  69. GRB 060323: BVRI observations at Tautenburg, aftreglow candidate
  70. GRB 060323: Swift/XRT position
  71. GRB 060322: Refined analysis of the Swift-BAT burst
  72. GRB060323, optical observation
  73. GRB060206: optical observation
  74. GRB060218/SN2006aj: optical observations
  75. GRB 060218/SN 2006aj, LNA optical observation
  76. GRB060218: Refined photometric calibration of comparison stars
  77. GRB 060319: WHT K-band candidate afterglow
  78. GRB060319: Swift XRT refined analysis
  79. GRB060319: Swift/UVOT upper limits
  80. GRB 060319: Re-analysis of TNG data
  81. GRB060319: MASTER limit
  82. GRB 060319: Swift-BAT refined analysis
  83. GRB 060319 optical observations at TNG
  84. GRB060319 : Liverpool Telescope optical limit
  85. GRB060319 - SDSS Pre-burst Observations
  86. GRB060319: Swift/XRT position
  87. GRB060313: Radio Observations
  88. GRB 060313: early afterglow NIR upper limits with REM
  89. Konus-Wind observation of GRB 060313
  90. GRB060313: SSO 40inch Observations
  91. GRB 060313: Further analysis of the Swift-BAT bright short hard burst
  92. GRB 060313: PROMPT Observations
  93. GRB 060313: Swift/UVOT Observations
  94. GRB060313:Gemini South Observations
  95. GRB 060313: Swift-XRT team refined analysis
  96. GRB060313: optical observations of the afterglow candidate
  97. GRB 060313: Refined analysis of the Swift-BAT bright short hard burst
  98. GRB 060313, SMARTS optical counterpart?
  99. GRB 060313: Possible optical counterpart
  100. GRB 060313: Swift XRT position

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