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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"

29110 results found.

  1. GRB 080605, Swift-BAT refined analysis
  2. GRB 080605, Swift-BAT refined analysis
  3. GRB 080605: Swift-XRT refined analysis
  4. GRB080605: observation by BOOTES
  5. GRB 080605: MASTER VWF 46 s AT observation
  6. GRB 080605: GROND detection of the optical afterglow candidate
  7. GRB 080605: Liverpool Telescope optical afterglow candidate
  8. GRB 080605: Swift/UVOT Position of the Optical Afterglow
  9. GRB 080605: Swift detection of a burst with an optical afterglow
  10. GRB 080603B: PAIRITEL infrared detection
  11. GRB 080603A: PAIRITEL infrared detection
  12. Swift/UVOT observations of GRB080604
  13. GRB 080604, Swift-BAT refined analysis
  14. GRB 080604: Swift-XRT refined analysis
  15. GRB 080603B : Liverpool Telescope Observations
  16. Konus-Wind observation of GRB 080603B
  17. GRB 080603B: Swift-XRT refined analysis
  18. GRB 080603A: Swift-XRT detection of the afterglow
  19. GRB 080603B: Swift/UVOT detection of the afterglow
  20. GRB 080603B, Swift-BAT refined analysis
  21. GRB 080603A: Swift/UVOT detection of the afterglow
  22. GRB080603B: RTT150 optical observations, break in light curves
  23. GRB 080604: Early Super-LOTIS Observations
  24. GRB080604: confirmation of optical afterglow
  25. GRB 080604: Swift detection of a burst with an optical afterglow
  26. GRB 080603B: TAROT Calern observatory confirmation of slow optical decay
  27. GRB 080516: TAROT La Silla observatory optical observations
  28. GRB 080603B: TAROT Calern observatory detection of a plateau in the light curve
  29. GRB 080603B: Swift detection of a burst with optical afterglow
  30. GRB 080603B: ROTSE-III Detection of Optical Counterpart
  31. GRB 080603: Gemini-North redshift
  32. Possible GRB080603: Faulkes Telescope North optical afterglow candidate
  33. GRB 080602, Swift-BAT refined analysis
  34. GRB 080602: Swift-XRT refined analysis
  35. Konus-Wind observation of GRB 080602
  36. GRB 080602: NOT R-band upper limit
  37. GRB 080602: Swift detection of a burst
  38. Swift analysis of BAT Slew Survey event (Trigger=009)
  39. Konus-Wind observation of reactivation of SGR 1627-41
  40. GRB 080523, Swift-BAT refined analysis
  41. Swift/UVOT observations of GRB 080523
  42. GRB 080523: Swift detection of a burst
  43. GRB080521(?): detection of possible burst from BAT slew data and XRT ToO
  44. GRB 80516: Swift/UVOT Observations
  45. GRB 080515: Swift-XRT position and analysis
  46. GRB 080520, Swift-BAT refined analysis
  47. GRB080520: Swift/UVOT observations
  48. GRB 080520: Swift XRT Refined Analysis
  49. GRB 080520: Swift detection of a burst with optical afterglow
  50. GRB 080514B: second epoch Swift XRT data confirms the X-ray afterglow
  51. GRB 080503: Further HST imaging
  52. GRB 080517, Swift-BAT refined analysis
  53. GRB 080517: Swift-XRT refined analysis
  54. GRB 080514B: Further NIR observations
  55. GRB080517: Liverpool Telescope Optical Observations
  56. GRB 080517: Swift detection of a burst
  57. GRB 080516: Swift-XRT Team refined analysis
  58. GRB 080516, Swift-BAT refined analysis
  59. GRB 080514B: NOT observations
  60. GRB 080516: Swift detection of a burst
  61. Swift-BAT refined analysis for Trigger 311603: Galactic source
  62. GRB 080515, Swift-BAT refined analysis
  63. GRB 080514B: KPNO 4m IR observations
  64. GRB 080514B: Swift-XRT analysis
  65. GRB 080515: Swift detection of a burst
  66. Swift detection of a possible galactic transient
  67. GRB 080506: NAYUTA Optical Observation
  68. GRB 080507: Keck photometry
  69. GRB 080507: E Pur Si Muove!
  70. GRB080507: Swift/UVOT followup observations
  71. GRB 080506: Swift XRT refined analysis
  72. GRB080506: Swift/UVOT observations
  73. GRB 080506, Swift-BAT refined analysis
  74. GRB080503, RIMOTS optical upper limit
  75. GRB 080506: TLS afterglow detection in VRIZ
  76. GRB 080506: Optical observation with KANATA/TRISPEC
  77. GRB 080506: Swift detection of a burst with optical afterglow
  78. GRB 080503: Late-time Optical rebrightening (possible mini-SN)
  79. GRB 080503, Swift-BAT lag and time-resolved spectral analysis
  80. GRB 080503: MITSuME Ishigakijima optical upper limits
  81. GRB080503: Swift/UVOT Upper Limits
  82. GRB080503 XRT refined analysis
  83. GRB 080503, Swift-BAT refined analysis
  84. GRB 080503: MITSuME Akeno optical upper limits
  85. GRB 080503: Swift detection of a short burst
  86. GRB 080411: Continued Swift Monitoring
  87. GRB080430: Swift/UVOT observations
  88. GRB 080430, Swift-BAT refined analysis
  89. GRB 080430: Swift-XRT refined analysis
  90. GRB 080430 - SDSS Pre-Burst Observations
  91. GRB 080430: Swift detection of a burst with optical afterglow
  92. GRB 080430: TAROT Calern observatory optical observations
  93. GRB960202B - on the association with SN 1996cr
  94. GRB 080426: Swift-XRT refined analysis
  95. GRB080426: Swift/UVOT upper limits
  96. GRB 080426, Swift-BAT refined analysis
  97. GRB 080426: Swift detection of a possibly short burst
  98. Possible GRB 080315: XRT non-detection of afterglow
  99. GRB 080320 : Faulkes Telescope North Observations
  100. GRB 080319A : Liverpool and Faulkes Telescopes Observations

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