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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"

32768 results found.

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

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