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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"

26521 results found.

  1. GRB 080605: TLS 3rd Epoch - Source Confusion
  2. Konus-Wind observation of GRB 080607
  3. GRB080607: RTT150 optical observations
  4. GRB 080603A: optical observations
  5. GRB 080607: Swift-XRT refined analysis
  6. GRB 080605: optical observations
  7. GRB 080607 KAIT observations
  8. VLA detection of INTEGRAL burst GRB 080603A
  9. Konus-Wind observation of GRB 080605
  10. GRB 080607: Enhanced Swift-XRT position
  11. GRB 080607, Swift-BAT refined analysis
  12. GRB 080605: GROND 2nd epoch observations
  13. GRB 080607: Super-LOTIS early observations
  14. GRB 080607: Swift detection of a burst with optical afterglow
  15. GRB 080605: TLS RRM Analysis, Plateau/Rebrightening, Red OT
  16. Possible VLA radio detection on INTEGRAL burst GRB 080603A
  17. GRB 080604: VLA radio upper limit
  18. GRB 080605, Swift-BAT refined analysis
  19. GRB 080603B: VLA radio upper limit
  20. GRB 080605, Swift-BAT refined analysis
  21. GRB 080605: Swift-XRT refined analysis
  22. GRB080605: observation by BOOTES
  23. GRB 080605: Enhanced Swift-XRT position
  24. GRB 080605: GROND detection of the optical afterglow candidate
  25. GRB 080605: Swift detection of a burst with an optical afterglow
  26. GRB 080603A: Xinglong R band observation
  27. GRB 080603B: TLS Afterglow Observation
  28. GRB 080603A: TLS Afterglow Observation
  29. GRB 080604, Swift-BAT refined analysis
  30. GRB 080604: Swift-XRT refined analysis
  31. GRB 080603B: Hobby-Eberly Telescope redshift confirmation
  32. GRB 080603B : Liverpool Telescope Observations
  33. Konus-Wind observation of GRB 080603B
  34. GRB 080603B: Swift-XRT refined analysis
  35. GRB 080603A: Swift-XRT detection of the afterglow
  36. GRB 080430: optical observations
  37. GRB 080604: Enhanced Swift-XRT position
  38. GRB 080603B, Swift-BAT refined analysis
  39. GRB080603B: RTT150 optical observations, break in light curves
  40. GRB 080604: Early Super-LOTIS Observations
  41. GRB 080604: Swift detection of a burst with an optical afterglow
  42. GRB 080516: TAROT La Silla observatory optical observations
  43. GRB 080603B: BOOTES2/TELMA optical observations
  44. GRB 080603B: TAROT Calern observatory detection of a plateau in the light curve
  45. GRB 080603B: Swift detection of a burst with optical afterglow
  46. GRB080603: Super-LOTIS detection of Optical Counterpart
  47. GRB 080603: A long GRB detected by INTEGRAL
  48. GRB 080602, Swift-BAT refined analysis
  49. GRB 080602: Swift-XRT refined analysis
  50. Konus-Wind observation of GRB 080602
  51. GRB 080602: Enhanced Swift-XRT position
  52. GRB 080602: Swift detection of a burst
  53. Swift analysis of BAT Slew Survey event (Trigger=009)
  54. GRB 080523: afterglow confirmation and redshift constraints
  55. Konus-Wind observation of reactivation of SGR 1627-41
  56. Reactivation of SGR 1627-41
  57. GRB 080523: Swift-XRT refined analysis
  58. GRB 080523, Swift-BAT refined analysis
  59. GRB 080520: VLT host detection
  60. GRB 080523: Enhanced Swift-XRT position
  61. GRB 080523: Swift detection of a burst
  62. GRB080521(?): detection of possible burst from BAT slew data and XRT ToO
  63. GRB 80516: Swift/UVOT Observations
  64. GRB 080515: Swift-XRT position and analysis
  65. GRB 080520, Swift-BAT refined analysis
  66. GRB 080514B: pseudo-z= 1.8 from prompt emission spectrum
  67. GRB 080520, GROND observations
  68. GRB 080520: Enhanced Swift-XRT position
  69. GRB 080520: Swift XRT Refined Analysis
  70. GRB 080520: Swift detection of a burst with optical afterglow
  71. GRB 080514B: Suzaku WAM observation of the prompt emission
  72. Konus-Wind observation of GRB 080514B
  73. GRB 080514B: second epoch Swift XRT data confirms the X-ray afterglow
  74. GRB 080517, Swift-BAT refined analysis
  75. GRB 080517: Enhanced Swift-XRT position
  76. GRB 080517: Swift detection of a burst
  77. GRB 080516, GROND 2nd epoch observations
  78. GRB 080516: Swift-XRT Team refined analysis
  79. GRB 080516, Swift-BAT refined analysis
  80. GRB 080516: Enhanced Swift-XRT position
  81. GRB 080516: Swift detection of a burst
  82. Errartum: VLA upper limit on GRB 080507
  83. VLA upper limit on GRB 080705
  84. GRB 080514B : redshift estimation
  85. Konus-Wind observation of GRB 080513
  86. IPN triangulation of bright GRB 080513
  87. Swift-BAT refined analysis for Trigger 311603: Galactic source
  88. GRB 080515, Swift-BAT refined analysis
  89. GRB 080514B: slow fading behaviour ?
  90. GRB 080514B: Swift-XRT analysis
  91. GRB 080514B, GROND observations
  92. GRB 080515: Swift detection of a burst
  93. GRB 080514B: SuperAGILE/IPN GRB Localization
  94. Swift detection of a possible galactic transient
  95. Konus-Wind observation of GRB 080507
  96. GRB 080507: Suzaku WAM observation of the prompt emission
  97. GRB 080507: Swift XRT analysis confirms the X-ray afterglow
  98. GRB 080507: Keck photometry
  99. GRB 080507: E Pur Si Muove!
  100. GRB 080503: Chandra Observation of X-ray Rebrightening or Flattening

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