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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"

32766 results found.

  1. GRB060502B: correction to XRT position
  2. GRB 060501: P60 Observations and Candidate Retraction
  3. GRB 060502B: Xinglong optical observation
  4. GRB060502: Swift-XRT refined analysis
  5. GRB 060502: Swift-BAT refined analysis
  6. GRB060502: Gemini spectroscopy
  7. GRB 060502: APO Spectroscopic Observations
  8. GRB060501: Swift UVOT followup observations
  9. GRB060502: Super-LOTIS Observations
  10. GRB 060502: P60 Afterglow Confirmation
  11. GRB 060501: MDM Observations
  12. GRB060501: Super-LOTIS observations
  13. GRB060501: P60 imaging and afterglow candidate
  14. GRB 060501: Refined analysis of the Swift-BAT burst
  15. GRB 060501: ROTSE-III Optical Limits
  16. Konus-Wind observation of GRB 060427B
  17. GRB060428B - SDSS Pre-Burst Observations
  18. GRB060428B: optical observation
  19. GRB060428B: possible detection of an optical counterpart by Swift/UVOT.
  20. GRB 060428B: MDM Observations
  21. GRB 060428A: PROMPT Observations
  22. GRB060428B: Swift XRT Team refined analysis
  23. GRB 060428B: Refined analysis of the Swift-BAT burst
  24. GRB 060428B: Xinglong I-band limit
  25. GRB 060428B: KAIT observations
  26. GRB 051117A: Bright host galaxy not confirmed
  27. GRB060428A: Swift/UVOT observations.
  28. GRB060428B, optical observation
  29. GRB 060428A: Refined analysis of the Swift-BAT burst
  30. GRB 060428b : Kiso R-band limit
  31. GRB 060428b: Optical afterglow candidate
  32. GRB060428A: Swift XRT Team refined analysis
  33. GRB 060427: NIR observations
  34. GRB060427: Xinglong optical Observations
  35. GRB 060427: Swift/UVOT upper limits.
  36. GRB 060427: Refined analysis of the Swift-BAT burst
  37. GRB060427: Swift XRT Team refined analysis
  38. GRB060418: Swift XRT Team Further Refined Analysis
  39. GRB 060427, optical observation
  40. GRB060424: optical afterglow detection
  41. GRB060418: Further Analysis of MIKE Spectroscopy
  42. GRB 060424: Refined analysis of the Swift-BAT burst
  43. GRB 060421: TTT Observations
  44. OT 060420: Likely Not a New Cosmic Transient
  45. No OT 060420 in MASCOT images
  46. GRB060421: Swift/UVOT observations
  47. GRB 060421: Swift-BAT Refined Analysis
  48. GRB 060421: Swift-XRT refined analysis
  49. GRB 060418: prediction of t_break
  50. GRB060418: optical observations
  51. Konus-Wind observation of GRB 060418
  52. Possible GRB060421: BART limits
  53. Erratum of GCN 4983 for GRB 060418 IR follow-up
  54. GRB 060418 : IR afterglow observations
  55. GRB 060418 : Lulin Optical follow-up
  56. GRB 060418: JHKs PAIRITEL Observations of Afterglow
  57. GRB 060418: Radio Observations
  58. GRB060418, BVRcIc field calibration
  59. GRB060418: Swift/UVOT Observations
  60. GRB060418: Optical Observations
  61. GRB 060418: FRAM early afterglow observation
  62. GRB 060418: Refined Analysis of the Swift-BAT burst
  63. VLT/UVES observations of GRB060418
  64. GRB 060418, SMARTS continuing afterglow observations
  65. GRB 060418: PROMPT Detections
  66. GRB 060418, SMARTS optical/IR afterglow observations
  67. GRB060418: Magellan/MIKE Spectroscopic Redshift
  68. GRB060418 : LT optical afterglow observation
  69. GRB 060418: REM candidate afterglow
  70. SGR 1900+14: Refined analysis of the Swift-BAT outburst
  71. GRB060413: Swift/UVOT upper limits
  72. GRB 060413: REM NIR Observations
  73. GRB 060413: Refined analysis of the Swift-BAT burst
  74. GRB 060413: Watcher UBVR observations
  75. GRB 060413: XRT refined analysis
  76. GRB 060413: No Optical Afterglow in Swift/UVOT TDRSS Data
  77. GRB 060413: Swift detection of a burst
  78. GRB060403: optical observations
  79. GRB 060403 Optical observations
  80. GRB 060403: MITSuME optical observation
  81. GRB060403: Optical Limit
  82. GRB060403: XRT refined analysis
  83. GRB 060403: Swift/UVOT upper limits
  84. SGR 1900+14: BAT observations
  85. GRB 060403: Refined analysis of the Swift-BAT burst
  86. GRB060403: Swift XRT refined position
  87. Konus-Wind observation of the recent SGR 1900+14 activity. Will
  88. HETE trigger H4044: RTT150 optical observations
  89. GRB060331: Swift/UVOT upper limits
  90. H4044, a Repeat Outburst From The Source of H4043 (="GRB060331")
  91. Swift XRT observations of the HETE transient H4043
  92. HETE Trigger 4043: ROTSE-III Optical Limits
  93. H4043, an unusual high-energy transient observed by HETE
  94. GRB 060322: LNA optical limit
  95. SGR 1900+14: bright burst detected by Konus-Wind on March 28
  96. INTEGRAL and XMM ToO observations of SGR1900+14
  97. GRB 060218SN 2006aj: optical observations at Rozhen Observatory
  98. GRB 060323 : WIDGET simultaneous optical observations
  99. GRB 060323: Early optical observation at Xinglong
  100. GRB060218, optical observations

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