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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.

Advanced Search Examples (click to copy):

subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

19607 results found.

  1. GRB 060807: Refined analysis of the Swift-BAT burst
  2. IPN triangulation of GRB060806 (long, exceptionally bright)
  3. GRB060807 - SDSS Pre-burst Observations
  4. GRB 060805B: X-ray Afterglow Detection, Spectral/Spatial/Temporal Properties
  5. GRB 060805B: Swift/UVOT Upper Limits
  6. GRB 060807: Swift detection of a burst
  7. GRB 060805: XRT Team Refined Analysis
  8. GRB 060805: Swift-BAT Refined Analysis
  9. GRB 060805: Swift/UVOT Upper Limits
  10. GRB 060805: KAIT observations
  11. GRB 060805 - SDSS Pre-Burst Observations
  12. GRB 060805: Swift detection of a burst
  13. GRB 060804: Swift UVOT observations
  14. GRB 060804: Swift-XRT Team Refined Analysis
  15. GRB 060804: Refined analysis of the Swift-BAT burst
  16. GRB 060804: Swift detection of a burst with a possible UVOT counterpart
  17. GRB 060728: Upper limits of the X-ray emission
  18. GRB 060801: WSRT Radio Observations
  19. GRB060801: Radio Observations
  20. GRB060801: Swift/UVOT Upper Limits
  21. GRB 060801: optical observations at Hanle and Calar Alto
  22. GRB 060801: Swift XRT refined analysis
  23. GRB 060801: Refined analysis of the Swift-BAT short hard burst
  24. GRB 060801: Swift detection of a short burst
  25. GRB060729: ROTSE-III Observations of the Slow Optical Decay
  26. Swift-BAT trigger 221873 is not a GRB or a Transient
  27. GRB 060729: Swift/UVOT Detections
  28. GRB 060729: Refined analysis of the Swift-BAT burst
  29. GRB 060729: Swift-XRT refined analysis
  30. GRB 060729: Swift/UVOT Observations
  31. GRB 060729: ROTSE-III Detection of Optical Counterpart
  32. GRB 060729: Swift detection of a burst with an UVOT optical counterpart
  33. GRB 060728: Swift/UVOT Upper Limits
  34. GRB 060728: Refined analysis of the Swift-BAT burst
  35. Swift/XRT preliminary analysis
  36. GRB 060728: Swift detection of a burst
  37. GRB060614 ATCA Radio Limits
  38. GRB 060714: Swift/UVOT Observations
  39. GRB 060522: VLA observation
  40. GRB 060719: Swift/UVOT Upper Limits
  41. GRB 060719: Refined analysis of the Swift-BAT burst
  42. GRB 060719: XRT refined analysis
  43. GRB 060719: optical limit by Pi-of-the-Sky
  44. GRB060719: FRAM early follow-up limit
  45. GRB 060719: Swift detection of a burst
  46. GRB 060717: Swift XRT refined analysis
  47. GRB 060714: Refined analysis of the Swift-BAT burst
  48. GRB060717: Swift/UVOT upper limits
  49. GRB 060717: Swift XRT refined position
  50. GRB 060717: Swift-BAT refined analysis
  51. GRB 060717: Swift detection of a burst
  52. GRB 060714: Swift XRT refined analysis
  53. GRB060708: MARGE low resolution spectrum observations
  54. Swift-BAT trigger 219136 is not a GRB
  55. GRB060707 possible optical confirmation
  56. Swift trigger 219136 is probably not a GRB
  57. GRB 060714: Swift detection of a burst with an UVOT optical afterglow
  58. GRB 060712: XRT refined analysis
  59. GRB 060712: Swift/UVOT Upper Limits
  60. GRB 060712: XRT refined position
  61. GRB 060712: Refined analysis of the Swift-BAT burst
  62. GRB 060712: Swift detection of a burst
  63. GRB 060708: Swift-XRT refined analysis
  64. GCN 060708: Swift-UVOT Observations
  65. GRB 060708: Refined analysis of the Swift-BAT burst
  66. GCN 060707: Swift-UVOT observations
  67. GRB 060707: Swift-XRT refined analysis
  68. GRB 060708: Swift detection of a burst with an UVOT countpart
  69. GRB060707 possible optical confirmation
  70. GRB 060707: BOOTES-IR optical afterglow candidate
  71. GRB 060707: Refined analysis of the Swift-BAT burst
  72. GRB 060707: BOOTES-IR optical observation
  73. GRB060614: Possible SN Bump in UVOT U Band Light Curve
  74. GRB 060707: Swift detection of a burst
  75. GRB 060614: Detection of a Possible, Late-Time Rebrightening
  76. Swift-BAT trigger 215279 is not a GRB
  77. Trigger 215279: Swift detection of a possible burst (GRB 060619)
  78. GRB 060614: pseudo-z from spectral parameters of the prompt emission
  79. Konus-Wind observation of GRB 060614
  80. The Unusually Long-Lived Afterglow of GRB 060614
  81. GRB 060605, optical observations
  82. GRB060614: SSO 1m observations
  83. GRB060614: Watcher observation
  84. GRB 060614: Swift-BAT refined analysis
  85. GRB 060614: Swift/UVOT Observations
  86. GRB060614: Swift-XRT refined analysis
  87. GRB 060604, optical observations
  88. GRB 060614: Swift detection of a burst with a bright optical and X-ray counterpart
  89. GRB 060602A: Swift/XRT analysis
  90. BAT Trigger #214277 is SGR 1900+14
  91. GRB 060610: KAIT observations
  92. GRB 060607: RTT150 optical observations
  93. GRB 070706B: Watcher upper limit
  94. GRB 060607B: Swift-BAT Refined Analysis
  95. GRB060602A: Swift/UVOT upper limits
  96. GRB 060607B: Swift detection of a burst
  97. GCN 060607: Swift-UVOT obswervations.
  98. GRB 060607: Swift-BAT Refined Analysis
  99. GRB 060607: optical limit by "Pi of the Sky"
  100. GRB 060607: Swift-XRT Team refined analysis

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