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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"

11659 results found.

  1. Konus-Wind observation of GRB 180620B
  2. Konus-Wind observation of GRB 180618A (a short GRB with extended emission)
  3. GRB 180620B: Fermi GBM detection
  4. GRB 180611A: AstroSat CZTI detection
  5. GRB 180618A: Fermi GBM detection
  6. Konus-Wind observation of GRB 180611A
  7. GRB 180611A: Fermi GBM observation
  8. IPN Triangulation of GRB 180611A (long)
  9. GRB 180605A: Fermi GBM observation
  10. IPN Triangulation of GRB 180605A (long)
  11. Fermi GBM trigger 180604900/549840956 likely not a GRB
  12. GRB 180602B: Fermi GBM detection
  13. Fermi GBM trigger 549533811/180601345 is not a GRB
  14. GRB180523B: Zwicky Transient Facility Follow-Up of a Fermi Short GRB (Trigger 548793993)
  15. Fermi GBM trigger 548829437/180524192 is not a GRB
  16. GRB 180505A: AstroSat CZTI detection
  17. GRB 180427A: AstroSat CZTI detection
  18. GRB 180505A: Fermi GBM detection
  19. GRB 180416A: AstroSat CZTI detection
  20. GRB 180416B: AstroSat CZTI detection
  21. Konus-Wind observation of GRB 180427A
  22. IPN Triangulation of GRB 180427A
  23. GRB 180427A: Fermi GBM detection
  24. Fermi GBM trigger 545979055/180421202 is not a GRB
  25. GRB 180418A: Fermi GBM observation
  26. GRB 180416B: CALET Gamma-Ray Burst Monitor detection
  27. GRB 180404B: AstroSat CZTI detection
  28. GRB 180416A: Fermi GBM detection
  29. GRB 180411A: CALET Gamma-Ray Burst Monitor detection
  30. Konus-Wind observation of GRB 180411A
  31. GRB 180410A: Fermi GBM observation
  32. GRB 180409A CALET Gamma-Ray Burst Monitor detection
  33. GRB 180411A: Fermi GBM detection
  34. GRB 180409A: Fermi GBM observation
  35. Konus-Wind observation of GRB 180404C
  36. IPN Triangulation of GRB 180409A
  37. Konus-Wind observation of GRB 180404B
  38. Fermi GBM triggers 544628550/180405571, 544542853/180404579, 544531428/180404447 are not GRBs
  39. GRB 180402A: Fermi GBM refined spectral analysis
  40. GRB 180404B: Fermi GBM observation
  41. Fermi GBM triggers 544440014/180403389 and 544451446/180403521 are not GRBs
  42. Konus-Wind observation of GRB 180402A
  43. GRB 180402A: Fermi GBM detection
  44. GRB 180314A: AstroSat CZTI detection
  45. Konus-Wind observation of GRB 180314A
  46. GRB 180313A: Fermi GBM detection
  47. GRB 180314A: Fermi GBM observation
  48. GRB 180305A: AstroSat CZTI detection
  49. GRB 180305A CALET Gamma-Ray Burst Monitor detection
  50. GRB 180305A: Swift/UVOT Upper Limits
  51. GRB 180305A: Mondy optical observations
  52. GRB 180305A: Swift-XRT afterglow detection
  53. Konus-Wind observation of GRB 180305A
  54. GRB 180305A: Swift ToO observations
  55. GRB 180305A: Fermi GBM detection
  56. GRB 180305A: Fermi-LAT detection
  57. Fermi GBM trigger 541402602/180227234 is not a GRB
  58. GRB 180210A: Insight-HXMT/HE observation
  59. GRB 180218A: AstroSat CZTI detection
  60. GRB 180219A CALET Gamma-Ray Burst Monitor detection
  61. Konus-Wind observation of GRB 180218A
  62. GRB 180218A: Fermi GBM Detection
  63. IPN Triangulation of GRB 180218A (long/bright)
  64. Fermi GBM triggers 540405116/180215689 and 540476225/180216512 are not a GRBs
  65. Konus-Wind observation of GRB 180210A
  66. GRB 180210A: Swift-XRT afterglow detection
  67. GRB 180210A: Tiled Swift observations
  68. GRB 180210A: Swift ToO observations
  69. GRB 180210A: Fermi-LAT detection
  70. GRB 180210A: Fermi GBM detection
  71. Fermi-GBM Detection of possible burst from AXP CXOU J164710.2-455216/PSR J1647-4552
  72. GRB 180205A: Fermi GBM observation
  73. Konus-Wind observation of GRB 180204A
  74. GRB 180204A: Fermi GBM detection
  75. GRB 180126A CALET Gamma-Ray Burst Monitor detection
  76. GRB 180120A: AstroSat CZTI detection
  77. Fermi GBM trigger 538030981/180119210 is not a GRB
  78. GRB 180120A: Fermi GBM Detection
  79. GRB 180120A CALET Gamma-Ray Burst Monitor detection
  80. Fermi GBM trigger 538316685/180122517 is not a GRB
  81. GRB 180113B: AstroSat CZTI detection
  82. GRB 180113A: AstroSat CZTI detection
  83. GRB 180116A CALET Gamma-Ray Burst Monitor detection
  84. GRB 180116A: Fermi GBM Detection
  85. Konus-Wind observation of GRB 180113B
  86. IPN Triangulation of GRB 180113B
  87. Konus-Wind observation of GRB 180113C
  88. IPN Triangulation of GRB 180113C
  89. Konus-Wind observation of GRB 180113A
  90. GRB 180113C: Insight-HXMT/HE observation
  91. GRB 180113B: Insight-HXMT/HE observation
  92. GRB 180113C: Fermi GBM detection
  93. GRB 180113B: Fermi GBM detection
  94. GRB 180113A: Fermi GBM observation
  95. GRB 171230B: Insight-HXMT/HE detection
  96. GRB 171227A: AstroSat CZTI detection
  97. GRB 171223A; AstroSat CZTI detection
  98. Fermi GBM Trigger 537135776/180108849 is not a GRB
  99. GRB 171230A CALET Gamma-Ray Burst Monitor detection
  100. GRB 180102A: Fermi GBM detection

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