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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"

12123 results found.

  1. GRB050713b: Maidanak optical observations
  2. GRB 050724: Chandra Observations of the X-ray Afterglow
  3. GRB 050724, SMARTS optical/IR afterglow observations
  4. GRB 050726, SMARTS optical/IR observations
  5. GRB 050724: J-band observations
  6. GRB 050724: SWIFT XRT refined position
  7. GRB050721A: Swift-BAT detection of a weak burst
  8. GRB 050712, Tautenburg optical afterglow observations
  9. Konus-Wind observation of GRB 050717
  10. Swift detection of GRB 050717
  11. Konus-Wind observation of GRB 050713A
  12. GRB 050714, R-band candidate
  13. GRB 050714A: ROTSE-III Optical Limits
  14. GRB 050714 - A long GRB detected with INTEGRAL
  15. GRB 050712, optical observations
  16. GRB050709: Candidate X-ray Afterglow from Chandra
  17. GRB 050713: Swift detection of Bright Burst
  18. GRB 050713A: ROTSE-III Optical Limits
  19. GRB050709: Radio Observations
  20. GRB 050525a: ARC 3.5-meter Optical and NIR Observations
  21. GRB 050626 optical observations
  22. GRB 050626: Swift XRT observations
  23. GRB 050408: ARC 3.5-meter NIR Observations
  24. GRB050701: Swift-BAT Refined analysis
  25. H11603: An X-ray flare from V4641 Sgr, or a possible XRF
  26. GRB 050626 - a long GRB detected with INTEGRAL
  27. H3800 and H3801 on 2005 June 11: two bursts from SGR1806-20 localized by HETE
  28. Konus-Wind observation of an intermediate burst from SGR 1806-20
  29. GRB 050607: Optical decay and spectral slope
  30. Optical Afterglow of GRB 050607
  31. Konus-Wind observation of GRB 050603
  32. GRB050528: updated Liverpool Telescope limits
  33. GRB 050525: RTT150, Optical observations
  34. GRB 050525: MITSuME Optical Observation in VRI
  35. GRB050525: Super-LOTIS observations
  36. GRB 050525A: Swift-BAT refined analysis
  37. GRB050525: Optical observations
  38. Konus-Wind observation of GRB 050525
  39. INTEGRAL detection of GRB 050525
  40. GRB 050525, infrared observations
  41. GRB 050525: Optical observation
  42. GRB050525: ROTSE-III Refined Analysis
  43. GRB 050525: Swift Detection of a Bright, Possibly Short Burst
  44. GRB 050525A: ROTSE-III Detection of Possible Counterpart
  45. XRF050522: NIR observations of XRT candidate
  46. XRF 050522: Swift XRT refined analysis
  47. GRB 050509A: Further I-band imaging
  48. GRB050522,optical observation
  49. GRB050520,optical observation
  50. GRB050509b: optical observations
  51. XRF 050522: Swift XRT observation
  52. XRF050522: Optical Observations
  53. XRF 050522 detected with INTEGRAL
  54. GRB 050520: Swift XRT refined analysis
  55. XRF050509C: Chandra Afterglow Detection
  56. XRF 050509c: Swift XRT Upper Limit
  57. GRB050520: Liverpool Telescope follow-up
  58. GRB 050520 - A long GRB detected with INTEGRAL
  59. Swift-BAT trigger 122203 is not a real GRB
  60. GRB 050509B and short GRB-SN association? (corrected)
  61. GRB 050509B and short GRB-SN association?
  62. GRB050509b, Bok telescope B-band imaging
  63. Chandra observation of GRB 050509b
  64. GRB 050509b: RAPTOR deep, early limits.
  65. GRB 050509a: Swift-BAT refined analysis
  66. GRB 050509c: ROTSE-III Optical Limits
  67. GRB 050509A: Optical observations
  68. GRB 050509b: Swift-BAT refined analysis of the short hard burst
  69. GRB 050509B: ROTSE-III Optical Limits
  70. GRB 050509a: Swift XRT Position
  71. Swift-BAT detection of GRB 050507
  72. GRB 050502a: Swift XRT Upper Limit
  73. GRB050416A : 1 GHz limit from GMRT
  74. GRB050505 Swift-BAT refined analysis
  75. GRB050502b: Afterglow Confirmation: Correction to OT Coordinates
  76. GRB050502b: Afterglow Confirmation
  77. GRB 050504, R band Observations
  78. GRB 050504: A long GRB detected with INTEGRAL
  79. Renewal of SGR 1806-20 activity
  80. GRB050502A: Optical Observations
  81. GRB 050502: INTEGRAL results
  82. GRB 050502 - A long GRB detected with INTEGRAL
  83. GRB 050421: SLOTIS observations
  84. GRB 050421: IR Observations
  85. GRB 050421: ROTSE-III Optical Limits
  86. GRB 050421: NIR observations
  87. Swift Detection of GRB050421
  88. GRB050326: analysis of the XMM-Newton observation
  89. GRB 050412: Chandra observations
  90. Swift-BAT detection of the bright and long GRB 050418
  91. GRB 050416B: optical observations
  92. GRB 050416: Swift-BAT refined analysis
  93. GRB 050416: Radio observations
  94. GRB 050408: RTT150 optical observations
  95. GRB050408: optical observation
  96. GRB 050412 : XingLong optical observation
  97. GRB050412: optical limit before and during GRB
  98. GRB050412: ROTSE-III Optical Limits
  99. GRB 050410, optical observations
  100. GRB 050410, optical observations

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