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GCN Circulars

GCN Circulars are rapid astronomical bulletins submitted by and distributed to community members worldwide. They are used to share discoveries, observations, quantitative near-term predictions, requests for follow-up observations, or future observing plans related to high-energy, multi-messenger, and variable or transient astrophysical events. See the documentation for help with subscribing to or submitting Circulars.

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To navigate to a specific circular, enter the associated Circular ID (e.g. 'gcn123', 'Circular 123', or '123').

18345 results found.

  1. GRB050724: Refined analysis of the Swift-BAT possible short burst
  2. GRB050724: a short-burst detected by Swift
  3. Swift-BAT trigger 147325 is not due to a real GRB
  4. GRB050723: XRT distributed coordinates are not related to the burst
  5. GRB 050721A: Swift-BAT refined analysis
  6. GRB 050721A: Early Swift XRT analysis results
  7. Swift BAT Trigger 146986 is SWIFT J1753.5-0127
  8. GRB 050721a: Optical Observations
  9. GRB050721A: Swift-BAT detection of a weak burst
  10. GRB 050714a: Refined XRT analysis and afterglow confirmation
  11. Swift-BAT trigger 146731 is not a real GRB
  12. Swift-BAT detection of a possible GRB
  13. GRB050717
  14. Konus-Wind observation of GRB 050717
  15. Swift/UVOT Observations of GRB 050717
  16. GRB 050717: Swift-BAT refined analysis
  17. GRB 050717: Refined XRT analysis.
  18. GRB050712: optical limits
  19. GRB050717: Swift XRT position
  20. Swift detection of GRB 050717
  21. GRB 050716 - UKIRT identification of candidate afterglow
  22. Swift UVOT Observations of GRB 050716
  23. GRB 050716: Refined XRT analysis.
  24. GRB050716: Refined analysis of the Swift-BAT burst
  25. GRB050716, optical observation
  26. GRB050716: Faulkes North Telescope observation
  27. GRB050716: Correction to sign in XRT coordinate
  28. Swift/BAT detection of GRB 050716
  29. GRB050715: Refined analysis of the Swift-BAT burst
  30. GRB 050715: Swift-BAT detection
  31. Swift UVOT Observations of GRB 050714B
  32. Konus-Wind observation of GRB 050713A
  33. GRB 050714B: refined XRT analysis
  34. GRB050714B: Refined analysis of the Swift-BAT burst
  35. Swift detection of a long transient (GRB 050714B?)
  36. GRB 050714: Swift XRT afterglow position
  37. GRB 050713A: XRT refined analysis
  38. GRB 050713A: RAPTOR detection of early optical emission
  39. GRB050713B :Swift/UVOT observations
  40. GRB050713b: XRT refined analysis
  41. GRB 050713B: Swift-BAT Refined Analysis
  42. Swift-BAT Trigger 145729 is not a GRB
  43. GRB 050713A: Swift/UVOT observation
  44. GRB 050713A : Swift-BAT Refined Analysis
  45. GRB050712: Swift UVOT Observation of Afterglow Emission
  46. GRB 050713A XMM-Newton observation
  47. GRB050713B: Faulkes North Telescope observation
  48. RBO RI observations of GRB 050713A
  49. GRB 050713B
  50. GRB050713: Liverpool Telescope prompt observations
  51. GRB050709: Candidate X-ray Afterglow from Chandra
  52. GRB 050713, R-band observations at NOT
  53. GRB 050713: Swift detection of Bright Burst
  54. GRB 050713A: ROTSE-III Optical Limits
  55. GRB050712: XRT refined analysis
  56. GRB 050709: Swift UVOT and XRT observations
  57. GRB 050712: Swift-BAT Refined Analysis
  58. GRB050712: UVOT candidate optical counterpart
  59. GRB 050712: Swift XRT afterglow position
  60. GRB 050712: Swift detection of a weak burst
  61. GRB 050525a: ARC 3.5-meter Optical and NIR Observations
  62. GRB 050626: Swift XRT observations
  63. GRB 050701
  64. GRB 050701, optical observations
  65. GRB 050701: Refined XRT analysis
  66. Swift UVOT observations of GRB 050701
  67. GRB050701: Swift-BAT Refined analysis
  68. GRB 050701: Swift XRT afterglow position
  69. Swift trigger 143708 is really GRB 050701
  70. GRB 050525A: Swift Late-Time Decay Rate
  71. CORRECTION: GRB050603 Swift UVOT Afterglow Observations
  72. GRB 050416(a): Host Galaxy Redshift Determination
  73. Swift/UVOT observations of GRB050607
  74. GRB 050607: RAPTOR-S Early Optical Limits
  75. GRB050607: KAIT optical limits
  76. GRB 050607: MDM Observations
  77. GRB050607,optical observation
  78. GRB 050607 - XRT refined data analysis
  79. GRB050607 optical limit by "Pi of the Sky"
  80. GRB050607: Swift Detection of a long GRB
  81. GRB 050603 - XRT data analysis of the first day
  82. Konus-Wind observation of GRB 050603
  83. GRB 050603: Analysis of UVOT data
  84. GRB050603: Fading Afterglow observed by Swift UVOT
  85. GRB 050603: Swift XRT Position
  86. GRB 050603: Swift-BAT refined analysis of a long three-spiked burst
  87. Swift/BAT Detection of GRB050603
  88. GRB 050408: jet break in the XRT light curve
  89. GRB050528, XRT observations
  90. Correction to GCN Circ 3502 on GRB 050528
  91. Swift-BAT GRB 050528: a soft burst
  92. Update on Swift-BAT GRB 050528 (Trigger 130679)
  93. Possible GRB050528: no candidate from Liverpool Telescope
  94. Swift-BAT detection of possible GRB 050528
  95. GRB 050509b: refined XRT/Chandra afterglow position analysis
  96. GRB050525a: optical upper limits
  97. GRB 050525B: Swift-BAT observations
  98. GRB050525A,optical observation
  99. GRB050525: Super-LOTIS observations
  100. GRB 050525, spectral lag pseudo-redshift

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