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GCN Circulars

GCN Circulars are rapid astronomical bulletins submitted by and distributed to community members worldwide. They are used to share discoveries, observations, quantitative near-term predictions, requests for follow-up observations, or future observing plans related to high-energy, multi-messenger, and variable or transient astrophysical events. 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"

2993 results found.

  1. Konus-Wind observation of GRB 110406A
  2. Konus-Wind observation of GRB 110402A
  3. Konus-Wind observation of GRB 110213A
  4. Konus-Wind observation of GRB 110213B
  5. Konus-Wind observation of GRB 110205A
  6. Konus-Wind observation of GRB 110120A
  7. Konus-Wind observation of GRB 110102A
  8. Konus-Wind observation of short hard GRB 101219A
  9. Konus-Wind observation of GRB 101213A
  10. Konus-Wind observation of GRB 101130A
  11. Konus-Wind observation of GRB 101129A
  12. Konus-Wind observation of GRB 101123A
  13. Konus-Wind observation of GRB 101114A
  14. Konus-Wind observation of GRB 101112A
  15. Konus-Wind observation of GRB 101023A
  16. Konus-Wind observation of GRB 101017A
  17. Konus-Wind observation of GRB 101014A
  18. Konus-Wind observation of GRB 100906A
  19. Konus-Wind observation of GRB 100829A
  20. Konus-Wind observation of GRB 100826A
  21. Konus-Wind observation of GRB 100816A
  22. Konus-Wind observation of GRB 100814A
  23. Konus-Wind observation of GRB 100728A
  24. Konus-Wind observation of GRB 100724B
  25. Konus-Wind observation of GRB 100707A
  26. Konus-Wind observation of GRB 100701B
  27. Konus-Wind observation of GRB 100704A
  28. Konus-Wind observation of GRB 100625A
  29. Konus-Wind observation of GRB 100621A
  30. Konus-Wind observation of GRB 100606A
  31. Konus-Wind observation of GRB 100528A
  32. Konus-Wind observation of GRB 100423A
  33. Konus-Wind observation of GRB 100414B
  34. Konus-Wind observation of GRB 100413A
  35. Konus-Wind observation of GRB 100324B
  36. Konus-Wind observation of GRB 100322A
  37. Konus-Wind observation of GRB 100119A
  38. Konus-Wind observation of GRB 100116A
  39. Konus-Wind observation of GRB 100103A
  40. Konus-Wind observation of GRB 091208A
  41. Konus-Wind observation of very long GRB 091123
  42. Konus-Wind observation of GRB 091127
  43. Konus-Wind observation of GRB 091120
  44. Konus-Wind observations of GRB 091117A
  45. Konus-Wind and Konus-RF observations of GRB 091024
  46. Konus-Wind observations of GRB 091010
  47. Konus-RF observation of GRB 091018
  48. Konus-Wind observations of GRB 091010
  49. Konus-Wind observation of GRB 091003A
  50. Konus-Wind observation of GRB 090929A
  51. Konus-Wind observation of GRB 090929B
  52. Konus-RF observation of GRB 090929A
  53. Konus-Wind and Konus-RF observations of GRB 090926A
  54. Konus-Wind observations of GRB 090831A
  55. Konus-Wind observations of GRB 090827
  56. Konus-Wind observations of GRB 090823
  57. Konus-Wind observations of GRB090813
  58. IPN Triangulation and Konus-Wind observaions of GRB090727B
  59. Konus-Wind and Konus-RF observations of GRB 090719
  60. Konus-RF and Konus-Wind observations of GRB 090718B
  61. Konus-Wind observations of bright hard GRB 090720B
  62. Konus-Wind observations of short/hard GRB 090715A
  63. Konus-Wind and Konus-RF observations of GRB 090715B
  64. Konus-Wind and Konus-RF observations of GRB 090709A
  65. Konus-Wind observation of GRB 090626
  66. Konus-Wind and Konus-RF observations of GRB 090618
  67. Konus-Wind observation of GRB 090510
  68. Konus-Wind observation of very bright GRB 090427
  69. GRB 090423: energetic, luminosity and jet break
  70. GRB 090423: Ep,i - Eiso correlation
  71. Konus-Wind observation of GRB 090418B
  72. Konus-Wind and Konus-RF observations of GRB 090408b
  73. Konus-Wind and Konus-RF observations of GRB 090406
  74. Konus-Wind observation of GRB 090401B
  75. Konus-Wind observation of GRB 090401A
  76. Konus-Wind observation of GRB 090328
  77. Konus-Wind observation of GRB 090323
  78. Konus-Wind observation of GRB 090315
  79. Konus-Wind observation of bright short GRB 090227B
  80. Konus-Wind observation of GRB 090301A
  81. Ongoing activity of AXP/SGR 1E1547.0-5408
  82. Konus-Wind observation of GRB 090217
  83. Konus-Wind observation of GRB 090201
  84. Konus-Wind observation of bright burst from AXP/SGR 1E1547.0-5408 on January 29
  85. Konus-Wind observation of AXP/SGR 1E1547.0-5408 bursting activity
  86. Konus-Wind observation of GRB 090102
  87. Konus-Wind observation of GRB 081222
  88. Konus-Wind observation of very bright GRB 081215A
  89. Konus-Wind observation of GRB 081221
  90. Konus-Wind observation of GRB 081209
  91. Konus-Wind observation of GRB 081203A
  92. Konus-Wind observation of GRB 081203B
  93. Konus-Wind observation of GRB 081126
  94. Konus-Wind observation of GRB 081121
  95. Konus-Wind observation of GRB 081025
  96. Konus-Wind observation of GRB 081001
  97. Konus-Wind observation of GRB 080916A
  98. Konus-Wind observation of GRB 080916C
  99. GRB 080913: Konus-Wind and Swift/BAT joint spectral analysis
  100. Konus-Wind observation of GRB 080825B

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