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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"

11610 results found.

  1. GRB 160107A: CALET Gamma-Ray Burst Monitor detection
  2. GRB 160107A: Fermi GBM observation
  3. Konus-Wind observation of GRB 160101A
  4. GRB 160104A: Fermi GBM observation
  5. LIGO/Virgo G211117: Fermi/LAT observations
  6. GRB 160101B: Fermi-LAT detection
  7. GRB 160101B: Fermi GBM detection
  8. GRB 160101A: Fermi GBM observation
  9. GRB 151231B: Fermi GBM observation
  10. GRB 151231A: Fermi GBM observation
  11. Konus-Wind observation of GRB 151227B
  12. IPN Triangulation of GRB 151227B
  13. GRB 151229A: Fermi GBM observation
  14. GRB 151228B: Fermi GBM observation
  15. LIGO/Virgo G211117: DESGW program observations with DECam
  16. LIGO/Virgo G211117: Fermi GBM Observations
  17. GRB 151228A: Fermi GBM observation
  18. GRB 151227B: Fermi GBM detection
  19. GRB 151227A: Fermi GBM detection
  20. Konus-Wind observation of GRB 151222A
  21. Fermi GBM trigger 472694170/151224997 is not a GRB
  22. IPN Triangulation of GRB 151222A (short/hard)
  23. Fermi GBM trigger 151221730 is not a GRB
  24. GRB 151222A: Fermi GBM detection
  25. Fermi GBM trigger 151221690 is not a GRB
  26. Fermi GBM trigger 472271765/151220108 is not a GRB
  27. Fermi GBM trigger 472166503/151218890 is not a GRB
  28. LIGO/Virgo G184098: Fermi-LAT search for high-energy gamma-ray counterpart
  29. GRB 151212B: CALET Gamma-Ray Burst Monitor detection
  30. GRB 151210B: Fermi GBM observation
  31. GRB 151210B: CALET Gamma-Ray Burst Monitor detection
  32. GRB 151205A: Fermi GBM detection
  33. Fermi GBM trigger 470712580/151202062 is not a GRB
  34. Fermi GBM trigger 470290196/151127174 is not a GRB
  35. Fermi GBM trigger 470375959/151128166 is not a GRB
  36. GRB 151122A: Fermi GBM detection
  37. GRB 151122A: Swift detection of a burst
  38. Konus-Wind observation of GRB 151120A
  39. GRB 151120A: Fermi GBM observation
  40. LIGO/Virgo G194575: Fermi GBM Observations
  41. GRB 151107B: CALET Gamma-Ray Burst Monitor detection
  42. LIGO/Virgo G194575: VLA follow-up
  43. GRB 151111A: Fermi GBM observation
  44. GRB 151107B: MASTER-NET OT detection inside the FERMI error box
  45. GRB 151107B: Mini-MegaTORTORA limits on simultaneous optical emission
  46. GRB 151107B
  47. GRB 151027A: the missing GeV component
  48. GRB 151030A: Fermi GBM observation
  49. Konus-Wind observation of GRB 151027A
  50. GRB 151027A: Fermi GBM observation
  51. GRB 151006A: CALET Gamma-Ray Burst Monitor detection
  52. Possible Fermi-LAT Gamma-ray counterpart for LIGO/Virgo G194575
  53. LIGO/Virgo G194575: Fermi GBM Observations
  54. LIGO/Virgo G194575: Identification of a GW CBC Candidate
  55. GRB 151021B: Fermi GBM detection
  56. Fermi GBM trigger 466602792/151015495 is not a GRB
  57. Fermi GBM trigger 466316973/151012187 is not a GRB
  58. Fermi GBM trigger 466059859/151009211 is not a GRB
  59. Konus-Wind observation of GRB 151006A
  60. GRB 151006A: Fermi-LAT detection
  61. GRB 151006A: Fermi GBM detection
  62. GRB 151001A: Fermi GBM detection
  63. Konus-Wind observation of GRB 150922A
  64. GRB 150922A: Fermi GBM observation
  65. IPN Triangulation of GRB 150922A (short/hard)
  66. LIGO/Virgo G184098: INTEGRAL search of temporally coincident prompt hard X-ray emission
  67. ANTARES neutrino detection: Fermi GBM Observations
  68. Fermi GBM trigger bn150920977 is not due to a GRB
  69. LIGO/Virgo G184098: DESGW followup program
  70. LIGO/Virgo G184098: DESGW followup program
  71. LIGO/Virgo G184098: Fermi-GBM ground-based follow-up
  72. Fermi GBM trigger 463890496/150914103 is not a GRB
  73. GRB 150912A: Fermi GBM observation
  74. Fermi GBM trigger 463422723/150908689 is not a GRB
  75. Fermi GBM trigger 463339482/150907725 is too weak to be classified
  76. Fermi GBM trigger 150907763 is not a GRB
  77. GRB 150906A: Fermi GBM detection
  78. GRB 150902A: Swift-XRT afterglow detection
  79. GRB 150902A: Swift-XRT observations
  80. GRB 150902A: MASTER-SAAO optical observations
  81. Konus-Wind observation of GRB 150902A
  82. GRB 150902A: Swift ToO observations
  83. GRB 150902A: Fermi GBM detection
  84. GRB 150902A: Fermi-LAT detection
  85. GRB 150831B: MASTER-IAC early optical observations
  86. GRB 150831B: Fermi GBM detection
  87. Fermi GBM trigger 150829183 is not a GRB
  88. Fermi GBM trigger 150828520 is not a GRB
  89. Fermi GBM trigger 150827524 is not a GRB
  90. Fermi GBM trigger 150826536 is not a GRB
  91. Konus-Wind observation of GRB 150824A
  92. IPN Triangulation of GRB 150824A
  93. GRB 150824A: Fermi GBM detection
  94. Konus-Wind observation of GRB 150821A
  95. GRB 150821A: Fermi GBM detection
  96. Konus-Wind observation of GRB 150819B
  97. GRB 150819B: Fermi GBM detection
  98. IPN Triangulation of GRB 150819B (short / very intense)
  99. MASTER OT inside bright ESO240-010 galaxy detection during FERMI trigger GRB150816.83 inspection
  100. GRB 150817A: Fermi GBM observation

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