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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"

12188 results found.

  1. GRB 161014A: Swift-XRT refined Analysis
  2. GRB 161014A: AROMA-N Optical Observation
  3. GRB 161014A: GTC spectroscopy
  4. GRB 161010A: Swift/UVOT Possible Detection
  5. GRB 161011A: Swift-XRT refined Analysis
  6. Konus-Wind observation of GRB 161010A
  7. GRB 161011A: Swift detection of a burst
  8. GRB 161010A: a long GRB detected by INTEGRAL
  9. GRB 161007A: Swift-BAT refined analysis
  10. GRB 161007A: MASTER-net early optical observations
  11. GRB 161007A: Swift detection of a burst
  12. GRB 160821A: Maisoncelles observatory optical observations
  13. Konus-Wind observation of GRB 161004B
  14. GRB 160927A: GTC observations
  15. GRB 160917A: Lomonosov BDRG gamma ray detection
  16. GRB 161004B: Swift detection of a burst
  17. Konus-Wind observation of GRB 161001A (short/hard ?)
  18. GRB 161001A: Swift-XRT refined Analysis
  19. GRB 160927A: Swift-BAT refined analysis
  20. GRB 160927A: Swift-XRT refined Analysis
  21. GRB 160927A: TNG optical afterglow confirmation
  22. GRB 160927A: Swift detection of a short hard burst
  23. GRB 160912A: Swift/UVOT Weak Afterglow Detection
  24. GRB 160912A: Mondy optical observations
  25. GRB 160912A Liverpool Telescope optical afterglow
  26. GRB 160910A: Global MASTER Net OT detection before LAT alert
  27. Konus-Wind observation of GRB 160910A
  28. GRB 160910A: CALET Gamma-Ray Burst Monitor detection
  29. GRB 160910A: Afterglow detection from OSN
  30. GRB 160910A: Swift-XRT afterglow detection
  31. GRB 160910A: Fermi-LAT detection
  32. Konus-Wind observation of GRB 160905A
  33. GRB 160905A: Fermi-LAT detection
  34. GRB 160905A: Fermi GBM observation
  35. GRB 160824B: Lomonosov BDRG gamma ray detection and MASTER limit
  36. GRB 160829A: Fermi-LAT detection of a short GRB
  37. GRB 160826A: Swift-BAT refined analysis
  38. GRB 160820A: Fermi GBM observation
  39. GRB160821A: Astrosat CZTI (veto) detection
  40. GRB 160821A: CALET Gamma-Ray Burst Monitor detection
  41. GRB 160824A: ISON/Terskol optical observations
  42. GRB 160824A: Bassano Bresciano Observatory upper limits
  43. Konus-Wind observation of GRB 160822A
  44. Konus-Wind observation of GRB 160820A
  45. GRB 160821B: Swift-BAT refined analysis
  46. Konus-Wind observation of GRB 160821A
  47. GRB 160821B: Swift-XRT refined Analysis
  48. GRB 160821A: Swift-BAT refined analysis
  49. Short GRB 160821B: MASTER early optical observations
  50. GRB 160821A: Fermi-LAT refined analysis
  51. GRB 160821A: Fermi GBM Detection
  52. GRB 160821B: Swift detection of a short burst
  53. GRB 160821A: TAROT Calern observatory optical detection
  54. GRB 160821A: Fermi-LAT detection of a bright burst
  55. GRB 160821A: Swift detection of a bright burst
  56. BAT detection and localization of GRB 160819A
  57. GRB 160819A: Fermi GBM detection
  58. GRB 160816A: ISON/UAFO optical observations
  59. Konus-Wind observation of GRB 160816A
  60. GRB 160815A: GWAC-F60A upper limit
  61. GRB 160816A: Fermi-LAT detection
  62. Konus-Wind observation of GRB 160814A
  63. GRB 160815A: Swift-XRT refined Analysis
  64. GRB 160815A: Swift detection of a burst
  65. GRB 160814A: MAXI/GSC detection
  66. IceCube 160806A: Lomonosov BDRG gamma ray prompt observations
  67. Konus-Wind observation of GRB 160806A
  68. Swift Trigger 707517 is probably not a GRB
  69. IceCube-160731A: Konus-Wind limits
  70. Konus-Wind observation of GRB 160802A
  71. GRB 160804A: Swift-XRT refined Analysis
  72. GRB 160802A: Lomonosov BDRG gamma ray detection
  73. GRB 160801A: SAO RAS optical observations
  74. GRB 160801A: Swift-XRT refined Analysis
  75. GRB 160801A: Swift detection of a burst
  76. GBM observation of SGR-like burst from the direction of PSR 1119-6127
  77. Trigger 706396: Swift detection of a short burst from PSR 1119-6127
  78. Konus-Wind observation of short GRB 160726A
  79. GRB 160721A: CALET Gamma-Ray Burst Monitor detection
  80. GRB 160720A CALET Gamma-Ray Burst Monitor detection
  81. GRB 160720A: Lomonosov BDRG gamma ray detection and MASTER limit
  82. Konus-Wind observation of GRB 160720A
  83. IPN Triangulation of GRB 160720A
  84. GRB 160703, GRB 160705, GRB 160720, SGR1935+2154: First SGRs and GRBs detected by Lomonosov.
  85. GRB 160720A: Fermi GBM detection
  86. Fermi GBM trigger 490701713/160720418 is not a GRB
  87. GRB 160716A: Swift-BAT refined analysis
  88. Swift Trigger 704327: KAIT Optical Observations
  89. GRB 160714A: MASTER early optical observations
  90. GRB 160709A CALET Gamma-Ray Burst Monitor detection
  91. Konus-Wind observation of GRB 160712A
  92. GRB 160712A: GROND observations
  93. GRB 160712A: Swift-XRT refined Analysis
  94. GRB 160712A: Skynet R-COP observations
  95. GRB 160712A: Swift-XRT observations
  96. GRB 160712A: Global MASTER-Net optical observation
  97. GRB 160712A: Swift detection of a burst
  98. GRB 160625B: Global MASTER-Crimea prompt optical emission detection (fwd)
  99. GRB 160709A: MASTER early imaging Swift BAT error box
  100. GRB 160709A: Global MASTER Net Fermi GBM Alerts observations

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