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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"

36114 results found.

  1. GRB050716: Faulkes North Telescope observation
  2. Swift/BAT detection of GRB 050716
  3. GRB 050715: Swift-BAT detection
  4. Swift UVOT Observations of GRB 050714B
  5. Konus-Wind observation of GRB 050713A
  6. GRB 050714B: refined XRT analysis
  7. GRB 050713b: RTT150 optical observations
  8. GRB 050714B: candidate afterglow does not fade
  9. GRB050714B: Refined analysis of the Swift-BAT burst
  10. GRB 050714B: optical afterglow
  11. Swift detection of a long transient (GRB 050714B?)
  12. GRB 050709: optical afterglow candidate
  13. GRB 050714, R-band candidate
  14. GRB 050714: Swift XRT afterglow position
  15. GRB 050714, optical observations
  16. GRB 050714A: ROTSE-III Optical Limits
  17. GRB 050714 - A long GRB detected with INTEGRAL
  18. GRB 050713A: XRT refined analysis
  19. GRB 050709: Spectroscopy
  20. GRB 050713A: RAPTOR detection of early optical emission
  21. GRB050713B :Swift/UVOT observations
  22. GRB050712: TNG R-band observations
  23. GRB 050713B: Swift-BAT Refined Analysis
  24. Swift-BAT Trigger 145729 is not a GRB
  25. GRB 050713A: Swift/UVOT observation
  26. GRB 050713A : Swift-BAT Refined Analysis
  27. GRB 050713A : Lulin R-band observation
  28. GRB 050713A XMM-Newton observation
  29. GRB 050713b : Lulin R-band observations
  30. GRB050713B: Faulkes North Telescope observation
  31. RBO RI observations of GRB 050713A
  32. GRB 050713B
  33. GRB050709 : Chandra source optical counterpart
  34. GRB050713: Liverpool Telescope prompt observations
  35. GRB 050712, optical observations
  36. GRB 050713 : Planned XMM-Newton observation
  37. GRB050709: Candidate X-ray Afterglow from Chandra
  38. GRB 050713, R-band observations at NOT
  39. GRB 050713: ARC NIR Detections and Identification of Fading
  40. GRB050713: possible I-band afterglow
  41. GRB 050713: Swift detection of Bright Burst
  42. GRB 050713A: ROTSE-III Optical Limits
  43. GRB 050709: Swift UVOT and XRT observations
  44. GRB 050712: Swift-BAT Refined Analysis
  45. GRB 050712: Swift XRT afterglow position
  46. GRB 050712: Swift detection of a weak burst
  47. GRB 050709: LCO40 Observations
  48. GRB050709: A Possible Short-Hard GRB Localized by HETE
  49. PROMPT Rc Observations of GRB 050709
  50. GRB 050525a: PROMPT VRcIc Detections
  51. GRB 050525a: ARC 3.5-meter Optical and NIR Observations
  52. GRB 050525a: ARC 3.5-Meter SPIcam Field Calibration
  53. GRB 050626 optical observations
  54. GRB 050626: Swift XRT observations
  55. GRB 050701
  56. GRB 050701, optical observations
  57. GRB 050408: ARC 3.5-meter NIR Observations
  58. GRB 050701: Refined XRT analysis
  59. Swift UVOT observations of GRB 050701
  60. GRB 050701: Swift XRT afterglow position
  61. Swift trigger 143708 is really GRB 050701
  62. GRB 050607, radio observations
  63. GRB 050626 - Correction to GCN 3552
  64. GRB 050626 - a long GRB detected with INTEGRAL
  65. GRB 050525A: Swift Late-Time Decay Rate
  66. H3804: A Possible New XRB Detected by HETE
  67. XRF 050509c: Optical monitoring
  68. IBAS Alert #2512 is NOT a GRB
  69. GRB 050416(a): Host Galaxy Redshift Determination
  70. GRB 050607: MDM Observation
  71. GRB 050607 optical decay
  72. GRB 050607: RTT150 optical observations
  73. GRB 050607 : Lulin R-band observation
  74. GRB 050607: PROMPT VRcIc Observations
  75. GRB 050607: RAPTOR-S Early Optical Limits
  76. GRB 050525a, Mid-Infrared Observations
  77. GRB 050607: Optical decay and spectral slope
  78. GRB 050607: MDM Observations
  79. GRB050607,optical observation
  80. GRB 050607 - XRT refined data analysis
  81. Optical Afterglow of GRB 050607
  82. GRB050607 optical limit by "Pi of the Sky"
  83. GRB050607: Swift Detection of a long GRB
  84. GRB050607: P60 Observations
  85. GRB 050603: prediction of t_break
  86. Limits on a SN in the field of GRB 050509b
  87. GRB 050603: Redshift
  88. GRB 050603 - XRT data analysis of the first day
  89. Konus-Wind observation of GRB 050603
  90. GRB 050603: Analysis of UVOT data
  91. GRB 050603: Swift XRT Position
  92. GRB050603: Radio Detection
  93. GRB 050603: Swift-BAT refined analysis of a long three-spiked burst
  94. GRB 050603: Afterglow Identification from LCO
  95. GRB 050603: INTEGRAL shows it is not a short GRB
  96. GRB 050408: jet break in the XRT light curve
  97. GRB 050525a, infrared observations
  98. GRB 050525a, SMARTS optical/IR afterglow observations
  99. Correction to GCN Circ 3502 on GRB 050528
  100. GRB050528: updated Liverpool Telescope limits

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