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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"

26372 results found.

  1. GRB 050714B: VLT R-band observations
  2. GRB050717
  3. GRB 050716; J-band observations
  4. Konus-Wind observation of GRB 050717
  5. GRB 050717: Swift-BAT refined analysis
  6. GRB050712: optical limits
  7. Swift detection of GRB 050717
  8. GRB 050716 - UKIRT identification of candidate afterglow
  9. GRB 050716: Optical Observations
  10. GRB050716: Faulkes North Telescope observation
  11. Swift/BAT detection of GRB 050716
  12. GRB 050715: Swift-BAT detection
  13. Swift UVOT Observations of GRB 050714B
  14. Konus-Wind observation of GRB 050713A
  15. GRB 050714B: refined XRT analysis
  16. GRB 050714B: candidate afterglow does not fade
  17. GRB050714B: Refined analysis of the Swift-BAT burst
  18. GRB 050709: optical afterglow candidate
  19. GRB 050714, optical observations
  20. GRB 050714 - A long GRB detected with INTEGRAL
  21. GRB 050713A: XRT refined analysis
  22. GRB 050709: Spectroscopy
  23. GRB 050713A: RAPTOR detection of early optical emission
  24. GRB050713b: XRT refined analysis
  25. GRB050713B: Faulkes North Telescope observation
  26. GRB050709 : Chandra source optical counterpart
  27. GRB050713: Liverpool Telescope prompt observations
  28. GRB 050712, optical observations
  29. GRB050709: Candidate X-ray Afterglow from Chandra
  30. GRB 050713, R-band observations at NOT
  31. GRB 050713: ARC NIR Detections and Identification of Fading
  32. GRB 050713: Swift detection of Bright Burst
  33. GRB 050713A: ROTSE-III Optical Limits
  34. GRB050712: XRT refined analysis
  35. GRB 050709: LCO40 Observations
  36. GRB050709: A Possible Short-Hard GRB Localized by HETE
  37. GRB 050525a: ARC 3.5-meter Optical and NIR Observations
  38. GRB 050626: Swift XRT observations
  39. GRB 050701
  40. GRB 050701, optical observations
  41. GRB 050408: ARC 3.5-meter NIR Observations
  42. Swift trigger 143708 is really GRB 050701
  43. H11603: An X-ray flare from V4641 Sgr, or a possible XRF
  44. GRB 050626 - a long GRB detected with INTEGRAL
  45. GRB 050525A: Swift Late-Time Decay Rate
  46. CORRECTION: GRB050603 Swift UVOT Afterglow Observations
  47. H3804: A Possible New XRB Detected by HETE
  48. H3800 and H3801 on 2005 June 11: two bursts from SGR1806-20 localized by HETE
  49. Konus-Wind observation of an intermediate burst from SGR 1806-20
  50. IBAS Alert #2512 is NOT a GRB
  51. GRB 050607 optical decay
  52. GRB 050607: RTT150 optical observations
  53. GRB050607: refined analysis of prompt REM observations
  54. GRB 050607 : Lulin R-band observation
  55. GRB 050607: PROMPT VRcIc Observations
  56. GRB 050607: RAPTOR-S Early Optical Limits
  57. GRB050607: KAIT optical limits
  58. GRB 050525a, Mid-Infrared Observations
  59. GRB 050607: Optical decay and spectral slope
  60. GRB 050607: MDM Observations
  61. GRB050607,optical observation
  62. GRB 050607 - XRT refined data analysis
  63. GRB050607 optical limit by "Pi of the Sky"
  64. GRB050607: Swift Detection of a long GRB
  65. GRB 050603: prediction of t_break
  66. GRB 050603: Redshift
  67. Konus-Wind observation of GRB 050603
  68. GRB 050603: Analysis of UVOT data
  69. GRB050603: Fading Afterglow observed by Swift UVOT
  70. GRB 050603: Swift XRT Position
  71. GRB 050603: Swift-BAT refined analysis of a long three-spiked burst
  72. GRB 050603: INTEGRAL shows it is not a short GRB
  73. Swift/BAT Detection of GRB050603
  74. GRB 050525a, infrared observations
  75. GRB 050525a, SMARTS optical/IR afterglow observations
  76. GRB050528: BOOTES optical candidate (retraction)
  77. GRB050504: Ashra-P2/3 monitor and Ashra-AFT response
  78. Possible GRB050528: no candidate from Liverpool Telescope
  79. GRB 050509b: refined XRT/Chandra afterglow position analysis
  80. GRB050525a: optical upper limits
  81. GRB 050525a: SARA Observations
  82. GRB 050525B: Swift-BAT observations
  83. GRB 050525a: MDM Observations
  84. GRB050525A,optical observation
  85. GRB 050525 : Lulin optical afterglow observations
  86. GRB050525: Super-LOTIS observations
  87. GRB 050525, spectral lag pseudo-redshift
  88. GRB 050525: BART optical observation
  89. GRB050525: Optical observations
  90. GRB 050525B: INTEGRAL shows it is unrelated to GRB050525A
  91. GRB 050525: pseudo-redshift
  92. Konus-Wind observation of GRB 050525
  93. GRB 050525: TAROT observations of the early afterglow
  94. INTEGRAL detection of GRB 050525
  95. GRB 050525, infrared observations
  96. GRB 050525: observatons of the optical afterglow
  97. GRB050525: ROTSE-III Refined Analysis
  98. GRB 050525 - Very Bright, Not Short
  99. GRB 050509A: Further I-band imaging
  100. XRF 050522: Continued NIR P200 Monitoring

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