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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"

12385 results found.

  1. GRB 150426A: Fermi GBM detection
  2. Fermi GBM trigger 150424722 is not a GRB
  3. GRB 150424B: Fermi GBM detection
  4. GRB 150422A: Fermi GBM detection
  5. GRB 150416A: Fermi GBM detection
  6. GRB 150416A: Fermi-LAT detection
  7. Konus-Wind observation of a bright burst from SGR 1935+2154
  8. GRB 150404A: Fermi GBM detection
  9. Konus-Wind observation of GRB 150403A
  10. Fermi trigger 449861706: MASTER-SAAO possible candidate to OT of Short GRB
  11. GRB 150403A: Fermi GBM Detection
  12. GRB 150403A: Fermi-LAT detection
  13. Konus-Wind observation of GRB 150330A
  14. IPN Triangulation of GRB 150330A (long/very intense)
  15. GRB 150330A: Fermi GBM detection
  16. Konus-Wind observation of GRB 150323B
  17. GRB150323C: Fermi GBM detection
  18. GRB 150323B: Fermi GBM observation
  19. GRB 150323B detected in ground analysis of Swift-BAT data
  20. Fermi GBM trigger 150319666 is not a GRB
  21. Konus-Wind observation of GRB 150314A
  22. GRB 150314A: Redshift from OSIRIS/GTC
  23. GRB 150314A: Fermi GBM observation
  24. GRB 150314A: Fermi-LAT detection
  25. Fermi GBM trigger 150312827 is not a GRB
  26. Fermi GBM trigger 150311331 is not a GRB
  27. GRB 150309A: Fermi GBM detection
  28. GRB 150309A: MASTER prompt optical observation
  29. Fermi GBM trigger 150307942 is not a GRB
  30. Fermi GBM trigger 150305751 is not a GRB
  31. GRB 150301B: LCOGT-Sutherland observations
  32. GRB 150301B: Fermi GBM detection
  33. GRB 150301A: Swift-BAT refined analysis
  34. GRB 150301A: Fermi GBM observation
  35. Fermi GBM Observations of Magnetar 4U 0142+61
  36. GRB 150220A: Fermi GBM observation
  37. IPN Triangulation of GRB 150220A
  38. Fermi GBM Observations of SGR 1935+2154
  39. Fermi GBM trigger 150223068 is not a GRB
  40. Fermi GBM trigger 150220229 is not a GRB
  41. GRB 150219A: Fermi GBM observation
  42. GRB 150213A: Fermi GBM detection
  43. GRB 150210A: Swift-XRT observations
  44. GRB 150210A: MASTER SN detection during LAT error box inspection
  45. GRB 150210A: Tiled Swift observations
  46. Konus-Wind observation of GRB 150210A
  47. IPN Triangulation of GRB 150210A
  48. GRB 150210A: Fermi-LAT detection
  49. GRB 150210A: Fermi GBM detection
  50. Konus-Wind observation of GRB 150202B
  51. GRB 150206B: Fermi GBM detection
  52. GRB 150206B: iPTF Optical Observations
  53. GRB 150204A: LCOGT-Sutherland and Siding Springs observations
  54. GRB 150204A: Fermi GBM detection
  55. GRB 150202B: Swift XRT/UVOT observations
  56. GRB 150204A found in ground analysis of Swift-BAT data
  57. IPN Triangulation of GRB 150202B
  58. GRB 150202B: Tiled Swift observations
  59. Fermi GBM trigger 150202624 is not a GRB
  60. GRB 150203A: Fermi GBM observation
  61. GRB 150202B: Fermi GBM detection
  62. GRB 150202B: Fermi-LAT detection
  63. Konus-Wind observation of GRB 150201A
  64. GRB 150201A: Fermi GBM observation
  65. GRB 150128A: MASTER OT detction during inspection
  66. GRB 150127B: Fermi GBM detection
  67. IPN Triangulation of GRB 150127B
  68. IPN Triangulation of GRB 150127A
  69. Konus-Wind observation of GRB 150126A reveals its ultra-long nature
  70. GRB 150127A: Fermi-LAT detection
  71. GRB150127A: Fermi GBM Detection
  72. GRB 150126A: Fermi GBM Detection
  73. GRB 150126A: MAXI/GSC afterglow candidate detection
  74. Konus-Wind observation of GRB 150118B
  75. IPN Triangulation of GRB 150118B (long/intense)
  76. GRB 150118C: Fermi GBM Detection
  77. IPN triangulation of GRB 150118C (short/hard)
  78. GRB 150120A: Fermi GBM observation
  79. GRB 150118B: Fermi GBM Detection
  80. GRB 150118B: Fermi-LAT detection
  81. GRB 150110A: MASTER inspection
  82. GRB 150110B: Fermi GBM Detection
  83. GRB 150110A: Fermi GBM Detection
  84. GRB 150110A: MAXI/GSC detection
  85. Fermi GBM trigger 150108121 is not a GRB
  86. Fermi GBM trigger 150106207 is not a GRB
  87. GRB 150105A: Fermi GBM detection
  88. GRB 150101B: potential host galaxy redshift by GTC
  89. GRB 150101B: Fermi GBM detection
  90. Swift J123205.1-105602: Magellan candidate afterglow
  91. Short burst found in ground analysis of Swift-BAT data
  92. GRB 150101A: Fermi GBM detection
  93. Konus-Wind observation of GRB 141229A
  94. Swift-XRT and UVOT follow-up of iPTF14jko (GRB 141230A)
  95. GRB 141230A: Fermi GBM detection
  96. GRB 141230A: Nanshan optical obsrvations
  97. GRB 141230A: iPTF Optical Observations and Candidate Afterglow iPTF14jko
  98. GRB 141229A: Swift-XRT observations
  99. Fermi GBM trigger 141229739 is not a GRB
  100. GRB 141229A: Fermi GBM detection

Advanced

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