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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"

32701 results found.

  1. GRB080613A: Swift/UVOT Upper Limits
  2. GRB 080613A: GROND Confirmation of the Afterglow Candidate
  3. GRB 080613B: GROND Upper Limits
  4. GRB 080613B - NOT optical and IR nondetections
  5. GRB080613B: Swift/UVOT Upper Limits
  6. GRB 080613B, Swift-BAT refined analysis
  7. GRB 080613B: Swift-XRT refined analysis
  8. GRB 080514B: Spectroscopic constraints and probable host galaxy
  9. GRB 080613: Faulkes Telescope North optical candidate
  10. GRB 080603A: Late-time Keck imaging and spectroscopy
  11. GRB 080603b: optical observation
  12. Swift observations of BAT Slew Survey event (Trigger=010)
  13. GRB 080603A: final Swift-XRT observations.
  14. GRB 080607: AGILE-MCAL observation of the prompt emission
  15. GRB 080603B - TLS 2nd Epoch: Another Break
  16. GRB 080605: TLS 3rd Epoch - Source Confusion
  17. GRB080605: optical observation with the MITSuME-OAO telescope
  18. Konus-Wind observation of GRB 080607
  19. GRB080607: RTT150 optical observations
  20. GRB 080603A: optical observations
  21. GRB 080607: Swift-XRT refined analysis
  22. Swift/UVOT Observations of GRB080607
  23. GRB 080605: optical observations
  24. GRB 080607 KAIT observations
  25. VLA detection of INTEGRAL burst GRB 080603A
  26. Konus-Wind observation of GRB 080605
  27. GRB 080607, Swift-BAT refined analysis
  28. GRB 080605: GROND 2nd epoch observations
  29. GRB 080607 - PAIRITEL NIR detection
  30. GRB 080607: Keck/LRIS spectroscopy and redshift
  31. GRB 080607: Super-LOTIS early observations
  32. GRB 080607: ROTSE-III Detection of Optical Counterpart
  33. GRB 080605: TLS RRM Analysis, Plateau/Rebrightening, Red OT
  34. GRB 080605: Swift-UVOT refined analysis
  35. Possible VLA radio detection on INTEGRAL burst GRB 080603A
  36. GRB 080604: VLA radio upper limit
  37. GRB 080605, Swift-BAT refined analysis
  38. GRB 080603B: VLA radio upper limit
  39. GRB 080605, Swift-BAT refined analysis
  40. GRB 080605: Swift-XRT refined analysis
  41. GRB080605: observation by BOOTES
  42. GRB 080605: MASTER VWF 46 s AT observation
  43. GRB 080605: GROND detection of the optical afterglow candidate
  44. GRB080605: optical observations
  45. GRB 080605: VLT redshift
  46. GRB 080605: Swift/UVOT Position of the Optical Afterglow
  47. GRB 080605: TLS RRM Afterglow
  48. GRB 080603B: PAIRITEL infrared detection
  49. GRB 080603A: PAIRITEL infrared detection
  50. GRB 080604: Xinglong R band observation
  51. GRB 080603A: Xinglong R band observation
  52. GRB 080603B: TLS Afterglow Observation
  53. GRB 080603A: TLS Afterglow Observation
  54. Swift/UVOT observations of GRB080604
  55. GRB080604: HET redshift retraction
  56. GRB 080604: Gemini-North spectroscopy
  57. GRB 080604, Swift-BAT refined analysis
  58. GRB 080604: Swift-XRT refined analysis
  59. GRB 080603B: Hobby-Eberly Telescope redshift confirmation
  60. GRB 080603B : Xinglong EST observations
  61. GRB 080603B : Liverpool Telescope Observations
  62. Konus-Wind observation of GRB 080603B
  63. GRB 080603B: Swift-XRT refined analysis
  64. GRB 080603A: Swift-XRT detection of the afterglow
  65. GRB 080430: optical observations
  66. GRB 080603B: Swift/UVOT detection of the afterglow
  67. GRB 080603B, Swift-BAT refined analysis
  68. GRB 080604: Hobby-Eberly Telescope spectroscopy
  69. GRB 080603A: Swift/UVOT detection of the afterglow
  70. GRB080603B: RTT150 optical observations, break in light curves
  71. GRB 080604: Early Super-LOTIS Observations
  72. GRB080604: confirmation of optical afterglow
  73. GRB080603B: NOT redshift
  74. GRB 080603B: BOOTES2/TELMA optical observations
  75. GRB080603: Super-LOTIS detection of Optical Counterpart
  76. GRB 080603B: ROTSE-III Detection of Optical Counterpart
  77. GRB 080603: Gemini-North redshift
  78. GRB 080602, Swift-BAT refined analysis
  79. GRB 080602: Swift-XRT refined analysis
  80. Konus-Wind observation of GRB 080602
  81. GRB 080602: NOT R-band upper limit
  82. Swift analysis of BAT Slew Survey event (Trigger=009)
  83. GRB 080523: afterglow confirmation and redshift constraints
  84. Konus-Wind observation of reactivation of SGR 1627-41
  85. Reactivation of SGR 1627-41
  86. GRB 080524: Swift XRT and UVOT analysis
  87. GRB 080503: 2nd Epoch Chandra X-ray Observations
  88. GRB 080523: Swift-XRT refined analysis
  89. GRB 080523, Swift-BAT refined analysis
  90. GRB 080520: VLT host detection
  91. GRB 080523: VLT optical observations
  92. Swift/UVOT observations of GRB 080523
  93. GRB 080515: KPNO 4m NIR afterglow detection
  94. GRB 80516: Swift/UVOT Observations
  95. GRB 080515: Swift-XRT position and analysis
  96. GRB 080520, Swift-BAT refined analysis
  97. GRB 080514B: pseudo-z= 1.8 from prompt emission spectrum
  98. GRB 080514B: UVOT Observations
  99. GRB080520: Swift/UVOT observations
  100. GRB 080520: VLT redshift

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