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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"

19612 results found.

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

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