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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').
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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"

32762 results found.

  1. GRB 060502: Swift-BAT refined analysis
  2. GRB060502: Gemini spectroscopy
  3. GRB 060502: APO Spectroscopic Observations
  4. GRB060501: Swift UVOT followup observations
  5. GRB060502: Super-LOTIS Observations
  6. GRB 060502: P60 Afterglow Confirmation
  7. GRB 060501: MDM Observations
  8. GRB060501: Super-LOTIS observations
  9. GRB060501: P60 imaging and afterglow candidate
  10. GRB 060501: Refined analysis of the Swift-BAT burst
  11. GRB 060501: ROTSE-III Optical Limits
  12. Konus-Wind observation of GRB 060427B
  13. GRB060428B - SDSS Pre-Burst Observations
  14. GRB060428B: optical observation
  15. GRB060428B: possible detection of an optical counterpart by Swift/UVOT.
  16. GRB 060428B: MDM Observations
  17. GRB 060428A: PROMPT Observations
  18. GRB060428B: Swift XRT Team refined analysis
  19. GRB 060428B: Refined analysis of the Swift-BAT burst
  20. GRB 060428B: Xinglong I-band limit
  21. GRB 060428B: KAIT observations
  22. GRB 051117A: Bright host galaxy not confirmed
  23. GRB060428A: Swift/UVOT observations.
  24. GRB060428B, optical observation
  25. GRB 060428A: Refined analysis of the Swift-BAT burst
  26. GRB 060428b : Kiso R-band limit
  27. GRB 060428b: Optical afterglow candidate
  28. GRB060428A: Swift XRT Team refined analysis
  29. GRB 060427: NIR observations
  30. GRB060427: Xinglong optical Observations
  31. GRB 060427: Swift/UVOT upper limits.
  32. GRB 060427: Refined analysis of the Swift-BAT burst
  33. GRB060427: Swift XRT Team refined analysis
  34. GRB060418: Swift XRT Team Further Refined Analysis
  35. GRB 060427, optical observation
  36. GRB060424: optical afterglow detection
  37. GRB060418: Further Analysis of MIKE Spectroscopy
  38. GRB 060424: Refined analysis of the Swift-BAT burst
  39. GRB 060421: TTT Observations
  40. OT 060420: Likely Not a New Cosmic Transient
  41. No OT 060420 in MASCOT images
  42. GRB060421: Swift/UVOT observations
  43. GRB 060421: Swift-BAT Refined Analysis
  44. GRB 060421: Swift-XRT refined analysis
  45. GRB 060418: prediction of t_break
  46. GRB060418: optical observations
  47. Konus-Wind observation of GRB 060418
  48. Possible GRB060421: BART limits
  49. Erratum of GCN 4983 for GRB 060418 IR follow-up
  50. GRB 060418 : IR afterglow observations
  51. GRB 060418 : Lulin Optical follow-up
  52. GRB 060418: JHKs PAIRITEL Observations of Afterglow
  53. GRB 060418: Radio Observations
  54. GRB060418, BVRcIc field calibration
  55. GRB060418: Swift/UVOT Observations
  56. GRB060418: Optical Observations
  57. GRB 060418: FRAM early afterglow observation
  58. GRB 060418: Refined Analysis of the Swift-BAT burst
  59. VLT/UVES observations of GRB060418
  60. GRB 060418, SMARTS continuing afterglow observations
  61. GRB 060418: PROMPT Detections
  62. GRB 060418, SMARTS optical/IR afterglow observations
  63. GRB060418: Magellan/MIKE Spectroscopic Redshift
  64. GRB060418 : LT optical afterglow observation
  65. GRB 060418: REM candidate afterglow
  66. SGR 1900+14: Refined analysis of the Swift-BAT outburst
  67. GRB060413: Swift/UVOT upper limits
  68. GRB 060413: REM NIR Observations
  69. GRB 060413: Refined analysis of the Swift-BAT burst
  70. GRB 060413: Watcher UBVR observations
  71. GRB 060413: XRT refined analysis
  72. GRB 060413: No Optical Afterglow in Swift/UVOT TDRSS Data
  73. GRB 060413: Swift detection of a burst
  74. GRB060403: optical observations
  75. GRB 060403 Optical observations
  76. GRB 060403: MITSuME optical observation
  77. GRB060403: Optical Limit
  78. GRB060403: XRT refined analysis
  79. GRB 060403: Swift/UVOT upper limits
  80. SGR 1900+14: BAT observations
  81. GRB 060403: Refined analysis of the Swift-BAT burst
  82. GRB060403: Swift XRT refined position
  83. Konus-Wind observation of the recent SGR 1900+14 activity. Will
  84. HETE trigger H4044: RTT150 optical observations
  85. GRB060331: Swift/UVOT upper limits
  86. H4044, a Repeat Outburst From The Source of H4043 (="GRB060331")
  87. Swift XRT observations of the HETE transient H4043
  88. HETE Trigger 4043: ROTSE-III Optical Limits
  89. H4043, an unusual high-energy transient observed by HETE
  90. GRB 060322: LNA optical limit
  91. SGR 1900+14: bright burst detected by Konus-Wind on March 28
  92. INTEGRAL and XMM ToO observations of SGR1900+14
  93. GRB 060218SN 2006aj: optical observations at Rozhen Observatory
  94. GRB 060323 : WIDGET simultaneous optical observations
  95. GRB 060323: Early optical observation at Xinglong
  96. GRB060218, optical observations
  97. GRB 060322: Confirmation of Swift XRT afterglow
  98. GRB 060211A: optical observation
  99. GRB060323: optical limit
  100. GRB060211B: optical observation

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