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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"

14929 results found.

  1. GRB 140311A: RATIR Optical and NIR Detection
  2. GRB 140311C: Fermi GBM Detection
  3. GRB 140311B: Fermi GBM Detection
  4. GRB 140311A: Swift/UVOT Upper Limits
  5. Fermi416242156: possible iPTF counterpart
  6. GRB 140311B: RATIR Optical and NIR Observations
  7. GRB 140311A: NOT redshift confirmation
  8. GRB 140311B: Nanshan afterglow detection
  9. GRB 140311A: Nanshan OT detection
  10. GRB 140311B: Swift detection of a burst
  11. GRB 140311A: Swift detection of a probable burst
  12. GRB 140304A: Suzaku WAM observation of the prompt emission
  13. GRB 140306A: Suzaku WAM observation of the prompt emission
  14. Konus-Wind observation of GRB 140306A
  15. GRB 140304A: Continued RATIR Optical and NIR Observations
  16. GRB 140306A: Fermi GBM detection
  17. Trigger 590503: Swift-BAT triggered on noise
  18. GRB 140304A: CARMA 3mm detection
  19. GRB 140304A: VLA Detection
  20. GRB 140305A: Swift detection of a burst
  21. GRB 140304A: Fermi GBM detection
  22. GRB 140304A: 10.4m GTC redshift z = 5.39
  23. iPTF14yb: JVLA and CARMA observations
  24. GRB 140304A: Khureltogot optical observations
  25. GRB 140304A: Swift detection of a burst
  26. GRB140302A: Fermi GBM detection
  27. GRB 140301A: GROND Detection of the Optical/NIR Afterglow
  28. GRB 140302A: Swift detection of a burst
  29. GRB 140301A: Swift detection of a burst
  30. PTF14yb: GROND Transient Detection
  31. GRB 140219A: Suzaku WAM observation of the prompt emission
  32. iPTF14yb: Swift-XRT detection
  33. GRB 140219A: MAXI/GSC detection
  34. GRB 140219A: MASTER optical brightening inside XRT-5 error box detection
  35. GRB 140219A: iPTF optical observations
  36. GRB 140102A: TAOS early optical afterglow detection
  37. GRB 140219A: Xuyi and Nanshan upper limits
  38. Konus-Wind observation of exceptionally bright GRB 140219A
  39. GRB 140221A: MAXI/GSC detection
  40. GRB 140219A: Fermi-LAT detection of a burst
  41. GRB 140219A: Fermi GBM Detection
  42. GRB 140215A: RAPTOR Observations During Gamma-Ray Emitting Interval
  43. Konus-Wind observation of GRB 140213A
  44. GRB 140215A: Swift/UVOT Detection
  45. GRB 140215A: KAIT Optical Detection
  46. GRB 140215A: Swift detection of a burst with optical counterpart
  47. GRB140206A: Discovery Channel Telescope Optical Detection
  48. GRB 140213A: Fermi GBM Detection
  49. GRB 140213A: GROND Detection of the Optical/NIR Afterglow
  50. GRB 140213A: Skynet R-COP Detection of Optical Afterglow
  51. GRB 140213A: Swift/UVOT Detection
  52. GRB 140213A: Swift detection of a burst
  53. Trigger 586482: Swift detection of GROJ1744-28
  54. Konus-Wind observation of GRB 140209A
  55. GRB 140211A: Swift detection of a burst
  56. GRB 140209A: Early RAPTOR Optical Detection
  57. GRB 140209A: P60 optical afterglow detection
  58. GRB 140209A: Swift detection of a burst
  59. Konus-Wind observation of GRB 140206B
  60. GRB 140206A: MITSuME Akeno detection of the optical counterpart
  61. GRB 140206A: Fermi GBM detection
  62. GRB 140206A: Swift/UVOT Detection
  63. GRB 140206B: Fermi-LAT detection
  64. GRB 140206B: Fermi GBM detection
  65. GRB 140206A: MASTER OT detection
  66. GRB 140206A: Swift/UVOT optical detection
  67. GRB 140206A: Swift detection of a burst
  68. GRB 140129B: Swift/UVOT Detection
  69. GRB 140129B: MASTER OT early light curve
  70. GRB 140129B, Swift-BAT refined analysis (probably not a short burst)
  71. GRB 140129B: Swift detection of a burst with an optical afterglow
  72. GRB 140129A: ROTSE-III Detection of Optical Counterpart
  73. GRB 140129A: P60 optical afterglow detection
  74. GRB 140129A: Swift detection of a burst with an optical afterglow
  75. Konus-Wind observation of GRB 131215A
  76. GRB 140118A: Swift detection of a burst
  77. GRB 140103A: MASTER-Net early OT detection
  78. GRB 140114A: Continued RATIR Optical and NIR Observations
  79. GRB 140114A: RATIR Optical and NIR Afterglow Detection
  80. GRB 140114A: Swift detection of a burst
  81. GRB 140104B: Suzaku WAM observation of the prompt emission
  82. GRB 140110A: OT detection in Swift/UVOT imaging
  83. GRB 140110A: Fermi-LAT detection of a burst
  84. GRB 140108A: Fermi GBM detection
  85. GRB 140108A: Swift/UVOT Detection
  86. GRB 140108A: D50+BART optical candidate detection
  87. GRB 140108A: MASTER-Net OT detection
  88. GRB 140108A: Swift detection of a burst
  89. New Fermi-LAT GRB Table
  90. GRB 140104B: Swift XRT observations
  91. GRB 140102A: Swift/UVOT Detection
  92. GRB 140105A: Fermi GBM detection
  93. GRB 140102A: BOOTES-4 early optical observations
  94. GRB 140104B: Fermi-LAT detection of a burst
  95. GRB 131231A: CARMA 3mm detection
  96. Konus-Wind observation of GRB 131231A
  97. Konus-Wind observation of GRB 140102A
  98. GRB 140102A: MAXI/GSC detection
  99. GRB 140102A: Fermi-LAT detection of a burst
  100. GRB 140103A: Swift detection of a burst

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