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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').

559 results found.

  1. GRB 140622A: An unusual short event, Swift-BAT refined analysis
  2. GRB 140610A: Swift-XRT refined Analysis
  3. GRB 140518A, Swift-BAT refined analysis
  4. GRB 140306A: Fermi GBM detection
  5. GRB 140304A: Swift-BAT refined analysis
  6. GRB 140219A: Fermi GBM Detection
  7. GRB 140209A, Swift-BAT refined analysis
  8. GRB 140206A: Swift-XRT refined Analysis
  9. GRB 140102A: Swift detection of a burst with optical counterpart
  10. GRB 131202A, Swift-BAT refined analysis
  11. GRB 131024B, Swift-BAT refined analysis
  12. GRB 130912A, Swift-BAT refined analysis
  13. GRB 130831A, Swift-BAT refined analysis
  14. GRB 130806A, Swift-BAT refined analysis
  15. GRB 130725A: Swift/UVOT Upper Limits
  16. GRB 130605A: Swift-BAT refined analysis
  17. GRB 130603B: Swift-BAT refined analysis
  18. GRB 130528A: Swift-BAT refined analysis
  19. GRB 130518A: mm detection at PdBI
  20. Konus-Wind observation of GRB 130504C
  21. GRB 130504A, Swift-BAT refined analysis
  22. GRB 130425A: Suzaku WAM observation of the prompt emission
  23. GRB 130420B, Swift-BAT refined analysis
  24. GRB 130418A: Swift detection of a burst with an optical counterpart
  25. GRB 130327A: Swift-BAT refined analysis
  26. GRB 130206A, Swift-BAT refined analysis
  27. GRB 130122A: Swift-BAT refined analysis
  28. GRB 121226A, Swift-BAT refined analysis
  29. GRB 121202A: Swift-BAT refined analysis
  30. GRB 121117A, Swift-BAT refined analysis
  31. GRB 121031A, Early peak observed with Swift-BAT
  32. GRB 121102A: Swift-BAT refined analysis
  33. GRB 121031A: Swift-BAT refined analysis
  34. GRB 121027A: Swift/UVOT Possible Detection
  35. GRB 121028A: Swift-BAT refined analysis
  36. GRB 121027A: Swift-BAT refined analysis
  37. GRB 121017A: Swift-BAT refined analysis
  38. GRB 120923A: Swift-BAT refined analysis
  39. Konus-Wind observation of GRB 120909A
  40. GRB 120907A: Swift-BAT refined analysis
  41. GRB 120803A: Swift-BAT refined analysis
  42. GRB 120729A, Swift-BAT refined analysis
  43. GRB 120703A: Swift-BAT refined analysis
  44. GRB 120701A: Swift-XRT afterglow detection and analysis
  45. GRB 120701A: Swift-BAT refined analysis
  46. GRB 120624B: Further analysis of the HAWKI observations
  47. Skynet/PROMPT observations of IGR J17062-6143 (Swift trigger 525148)
  48. Swift detection of IGR J17062-6143
  49. GRB 120514A: Swift-BAT refined analysis
  50. GRB 120422A: Swift-BAT refined analysis
  51. GRB120404A: MOA optical observations of the initial rise afterglow
  52. GRB 120324A: Swift detection of a burst
  53. LS I +61 303: Swift-BAT refined analysis
  54. Swift detection of a burst from LS I +61 303
  55. Konus-Wind observation of GRB 120129A
  56. GRB 120118B, Swift-BAT refined analysis
  57. Konus-Wind observation of GRB 120119A
  58. GRB 120119A: Swift detection of a burst with an optical counterpart
  59. XRF 120118A: Optical candidate
  60. AXP 4U 1042+61: Mondy optical observations
  61. GRB 120116A: Swift-BAT refined analysis
  62. AXP 4U 0142+61: Swift-BAT refined analysis (trigger 511611)
  63. Swift detection of an SGR burst from AXP 4U 0142+61
  64. GRB 111222A : Suzaku WAM observation of the prompt emission
  65. GRB 111215B: Suzaku WAM observation of the prompt emission
  66. GRB 111210A: Swift-BAT refined analysis
  67. GRB 111129A: Swift-BAT refined analysis
  68. GRB 111029A: Faulkes Telescope North observations
  69. SGR Swift J1834.9-0846: Swift-BAT refined analysis of trigger 501752
  70. GRB 110827A, Swift-BAT refined analysis
  71. Swift-BAT refined analysis of SFXT IGR J08408-4503 (trigger 501368)
  72. GRB 110818A: Swift-XRT refined Analysis
  73. GRB110731A: MOA optical observations of the steeply fading afterglow
  74. AXP 4U 0142+61: Fermi GBM detection
  75. GRB110731A: Swift/UVOT Observations
  76. AXP 4U 0142+61: Swift-BAT refined analysis
  77. Swift detection of a SGR-like burst from the AXP 4U 0142+61
  78. GRB 110709B: Preliminary Swift-BAT refined analysis
  79. GRB 110530A: optical observations in Mondy observatory
  80. GRB 110530A: optical observations at Mt. Terskol, second epoch
  81. GRB 110530A: Swift/UVOT Detection of a Fading Afterglow
  82. GRB 110530A: optical observations at Mt. Terskol
  83. GRB 110530A: Swift-BAT refined analysis
  84. GRB 110530A: Swift detection of a burst with an optical afterglow
  85. GRB 110521A: Swift-XRT refined analysis
  86. GRB 110422A: Swift-BAT refined analysis
  87. GRB 110420B: Swift-BAT refined analysis
  88. GRB 110420A: Swift-BAT refined analysis
  89. GRB 110411A, Swift-BAT refined analysis
  90. GRB 110402A: fading optical afterglow
  91. GRB 110402A: optical observations in Mondy
  92. GRB 110402A: Liverpool Telescope Observations
  93. GRB 110305A: Swift-BAT refined analysis
  94. IBAS trigger n. 6138 is not a GRB
  95. Konus-Wind observation of GRB 110213A
  96. GRB 110106B: Swift-BAT refined analysis
  97. GRB 110106A: Swift-BAT refined analysis
  98. GRB 100906A: Swift-BAT refined analysis
  99. GRB 100905A: Swift-BAT refined analysis
  100. GRB 100904A: Swift-BAT refined analysis

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