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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"

19670 results found.

  1. GRB 060719: Swift/UVOT Upper Limits
  2. GRB 060719: Refined analysis of the Swift-BAT burst
  3. GRB 060719: XRT refined analysis
  4. GRB 060719: optical limit by Pi-of-the-Sky
  5. GRB060719: FRAM early follow-up limit
  6. GRB 060719: Swift detection of a burst
  7. GRB 060717: Swift XRT refined analysis
  8. GRB 060714: Refined analysis of the Swift-BAT burst
  9. GRB060717: Swift/UVOT upper limits
  10. GRB 060717: Swift XRT refined position
  11. GRB 060717: Swift-BAT refined analysis
  12. GRB 060717: Swift detection of a burst
  13. GRB 060714: Swift XRT refined analysis
  14. GRB060708: MARGE low resolution spectrum observations
  15. Swift-BAT trigger 219136 is not a GRB
  16. GRB060707 possible optical confirmation
  17. Swift trigger 219136 is probably not a GRB
  18. GRB 060714: Swift detection of a burst with an UVOT optical afterglow
  19. GRB 060712: XRT refined analysis
  20. GRB 060712: Swift/UVOT Upper Limits
  21. GRB 060712: XRT refined position
  22. GRB 060712: Refined analysis of the Swift-BAT burst
  23. GRB 060712: Swift detection of a burst
  24. GRB 060708: Swift-XRT refined analysis
  25. GCN 060708: Swift-UVOT Observations
  26. GRB 060708: Refined analysis of the Swift-BAT burst
  27. GCN 060707: Swift-UVOT observations
  28. GRB 060707: Swift-XRT refined analysis
  29. GRB 060708: Swift detection of a burst with an UVOT countpart
  30. GRB060707 possible optical confirmation
  31. GRB 060707: BOOTES-IR optical afterglow candidate
  32. GRB 060707: Refined analysis of the Swift-BAT burst
  33. GRB 060707: BOOTES-IR optical observation
  34. GRB060614: Possible SN Bump in UVOT U Band Light Curve
  35. GRB 060707: Swift detection of a burst
  36. GRB 060614: Detection of a Possible, Late-Time Rebrightening
  37. Swift-BAT trigger 215279 is not a GRB
  38. Trigger 215279: Swift detection of a possible burst (GRB 060619)
  39. GRB 060614: pseudo-z from spectral parameters of the prompt emission
  40. Konus-Wind observation of GRB 060614
  41. The Unusually Long-Lived Afterglow of GRB 060614
  42. GRB 060605, optical observations
  43. GRB060614: SSO 1m observations
  44. GRB060614: Watcher observation
  45. GRB 060614: Swift-BAT refined analysis
  46. GRB 060614: Swift/UVOT Observations
  47. GRB060614: Swift-XRT refined analysis
  48. GRB 060604, optical observations
  49. GRB 060614: Swift detection of a burst with a bright optical and X-ray counterpart
  50. GRB 060602A: Swift/XRT analysis
  51. BAT Trigger #214277 is SGR 1900+14
  52. GRB 060610: KAIT observations
  53. GRB 060607: RTT150 optical observations
  54. GRB 070706B: Watcher upper limit
  55. GRB 060607B: Swift-BAT Refined Analysis
  56. GRB060602A: Swift/UVOT upper limits
  57. GRB 060607B: Swift detection of a burst
  58. GCN 060607: Swift-UVOT obswervations.
  59. GRB 060607: Swift-BAT Refined Analysis
  60. GRB 060607: optical limit by "Pi of the Sky"
  61. GRB 060607: Swift-XRT Team refined analysis
  62. VLT/UVES observations of GRB 060607
  63. GRB 060605: RTT150 optical observations
  64. GRB 060607: Swift detection of a burst with bright optical counterpart
  65. GRB 060605 BAT refined analysis
  66. GRB060605: Swift/UVOT detections
  67. GRB 060605: Swift-XRT Team refined analysis
  68. GRB 060605: RTT150 optical observations
  69. GRB 060605: ROTSE-III Optical Counterpart
  70. GRB 060605: Swift detection of a burst with optical counterpart
  71. GRB 060605: ROTSE-III Detection of Optical Counterpart
  72. GRB060604: Swift/UVOT detections
  73. GRB 060604: redshift
  74. GRB 060604 optical photometry
  75. GRB 060604: Swift-XRT Team refined analysis
  76. GRB 060604: BAT refined analysis
  77. GRB 060604A: ROTSE-III Optical Limits
  78. GRB 060604: Swift detection of a burst with possible optical counterpart
  79. GRB 060602A: Swift-BAT Refined Analysis: Correction
  80. GRB 060602B: XMM-Newton Survey Source
  81. GRB 060602B: Swift-XRT Refined Analysis
  82. GRB 060602B: Swift-BAT Refined Analysis
  83. GRB 060602B: Swift/UVOT observations
  84. GRB 060602A: Swift-BAT Refined Analysis
  85. GRB 060602B: RTT150 optical observations
  86. GRB 060602B: Swift detection of a burst
  87. GRB060602 - SDSS Pre-Burst Observations
  88. GRB 060602: Swift detection of a burst
  89. GRB 060526: Break in X-ray light curve
  90. GRB 051227 : WIDGET simultaneous optical observations
  91. GRB 060526: Multiple Optical Flares
  92. GRB060502b: optical observations
  93. GRB 060526: Optical Flare
  94. GRB 060526: Refined analysis of the Swift-BAT burst
  95. GRB 060526: RTT150 optical observations
  96. GRB060526: Further Swift-UVOT Observations
  97. GRB 060526: Swift/XRT Team refined analysis
  98. GRB 060526: ROTSE-III Observations of Optical Counterpart
  99. GRB 060526: Watcher Observations
  100. GRB 060526: Continued emission for the Swift burst

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