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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"

27112 results found.

  1. GRB 060805B: X-ray Afterglow Detection, Spectral/Spatial/Temporal Properties
  2. GRB 060807, optical observation
  3. GRB 060807: Kanazawa R-band observation
  4. GRB 060807: Swift detection of a burst
  5. GRB 060805: optical upper limit in R
  6. GRB 060805: XRT Team Refined Analysis
  7. GRB 060805: Swift-BAT Refined Analysis
  8. GRB 060805: Swift/UVOT Upper Limits
  9. GRB 060805: KAIT observations
  10. GRB 060805 - SDSS Pre-Burst Observations
  11. GRB 060805: Swift detection of a burst
  12. GRB 060804: Swift UVOT observations
  13. GRB 060804: Swift-XRT Team Refined Analysis
  14. GRB 060804: Refined analysis of the Swift-BAT burst
  15. GRB 060804: Swift detection of a burst with a possible UVOT counterpart
  16. GRB 060728: Upper limits of the X-ray emission
  17. GRB060801: Swift/UVOT Upper Limits
  18. GRB060801: optical upper limit in R
  19. GRB 060801: Swift XRT refined analysis
  20. GRB 060801: Refined analysis of the Swift-BAT short hard burst
  21. GRB 060801: Kanazawa Optical Observation
  22. GRB 060801: Swift detection of a short burst
  23. GRB060729: ROTSE-III Observations of the Slow Optical Decay
  24. GRB 060218 / SN 2006aj Nebular Spectrum
  25. Swift-BAT trigger 221873 is not a GRB or a Transient
  26. GRB 060719: TORTOREM optical upper limits
  27. GRB 060729: Refined analysis of the Swift-BAT burst
  28. GRB 060729: Swift/UVOT Observations
  29. GRB 060729: ROTSE-III Detection of Optical Counterpart
  30. GRB 060729: Swift detection of a burst with an UVOT optical counterpart
  31. GRB 060728: Swift/UVOT Upper Limits
  32. GRB 060728: Refined analysis of the Swift-BAT burst
  33. Swift/XRT preliminary analysis
  34. GRB 060728: Swift detection of a burst
  35. GRB 060714: Swift/UVOT Observations
  36. GRB060719: prompt NIR observations with REM
  37. GRB 060719: Swift/UVOT Upper Limits
  38. GRB 060719: VLT/ISAAC observations
  39. GRB 060719: Refined analysis of the Swift-BAT burst
  40. GRB 060719: XRT refined analysis
  41. GRB 060719: further analysis of VLT observations
  42. GRB 060719: optical limit by Pi-of-the-Sky
  43. GRB060719: FRAM early follow-up limit
  44. GRB060719: REM NIR Observations
  45. GRB 060719: Swift detection of a burst
  46. GRB 060714: Refined analysis of the Swift-BAT burst
  47. GRB060717: Swift/UVOT upper limits
  48. GRB 060717: Swift XRT refined position
  49. GRB 060717: Swift-BAT refined analysis
  50. GRB060717 - SDSS Pre-burst Observations
  51. GRB 060714: REM infrared observations
  52. GRB 060717: Swift detection of a burst
  53. GRB 060714: Swift XRT refined analysis
  54. GRB060708: MARGE low resolution spectrum observations
  55. Swift-BAT trigger 219136 is not a GRB
  56. Swift trigger 219136 is probably not a GRB
  57. GRB 060714: Swift detection of a burst with an UVOT optical afterglow
  58. GRB 060605: SkyNet Optical Limits
  59. GRB 060712: XRT refined analysis
  60. GRB 060712: Swift/UVOT Upper Limits
  61. GRB 060712: XRT refined position
  62. GRB 060712: Refined analysis of the Swift-BAT burst
  63. GRB 060712: Swift detection of a burst
  64. GRB 060708: Swift-XRT refined analysis
  65. GCN 060708: Swift-UVOT Observations
  66. GRB 060708: Refined analysis of the Swift-BAT burst
  67. GCN 060707: Swift-UVOT observations
  68. GRB 060707: Swift-XRT refined analysis
  69. GRB 060708: Swift detection of a burst with an UVOT countpart
  70. GRB 060707: Refined analysis of the Swift-BAT burst
  71. GRB060614: Possible SN Bump in UVOT U Band Light Curve
  72. GRB 060707: Swift detection of a burst
  73. GRB 060614: Detection of a Possible, Late-Time Rebrightening
  74. Swift-BAT trigger 215279 is not a GRB
  75. Trigger 215279: Swift detection of a possible burst (GRB 060619)
  76. Konus-Wind observation of GRB 060614
  77. The Unusually Long-Lived Afterglow of GRB 060614
  78. GRB060614: SSO 1m observations
  79. GRB 060614: Swift-BAT refined analysis
  80. GRB 060614: Swift/UVOT Observations
  81. GRB060614: Swift-XRT refined analysis
  82. GRB 060614: Swift detection of a burst with a bright optical and X-ray counterpart
  83. GRB 060602A: Swift/XRT analysis
  84. BAT Trigger #214277 is SGR 1900+14
  85. GRB 060610: KAIT observations
  86. GRB 060607: RTT150 optical observations
  87. GRB 060607B: Swift-BAT Refined Analysis
  88. GRB060602A: Swift/UVOT upper limits
  89. GRB 060607B: Swift detection of a burst
  90. GCN 060607: Swift-UVOT obswervations.
  91. GRB 060607: Swift-BAT Refined Analysis
  92. GRB 060607: optical limit by "Pi of the Sky"
  93. GRB 060607: Swift-XRT Team refined analysis
  94. GRB 060607: IR observations
  95. VLT/UVES observations of GRB 060607
  96. GRB 060607: PROMPT Observations
  97. GRB 060605: RTT150 optical observations
  98. GRB 060607: Swift detection of a burst with bright optical counterpart
  99. GRB 060605 BAT refined analysis
  100. GRB060605: Swift/UVOT detections

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