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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"

11552 results found.

  1. GRB 120323A: Fermi LAT observations
  2. Konus-Wind observation of GRB 120323A
  3. IPN Triangulation of GRB 120323A (short/very intense)
  4. GRB 120323A: Fermi GBM detection
  5. GRB 120316A : Suzaku WAM observation of the prompt emission
  6. GRB 120316A: Fermi-GBM and Fermi-LAT Observations
  7. Fermi GBM trigger 120319.237 is not a GRB
  8. Konus-Wind observation of GRB 120316A
  9. IPN Triangulation of GRB 120316A
  10. GBM trigger 353549464 (GRB 120316A?) : High-energy photon emission in Fermi/LAT data
  11. Fermi GBM triggers 120309.265 and 120309.402 are not GRBs
  12. Fermi GBM triggers 120305.186, 120305.802 and 120306.823 are not GRBs
  13. GRB 120302A: Fermi GBM Observation
  14. GRB 120302A found in ground analysis of BAT data
  15. Konus-Wind observation of GRB 120226A
  16. GRB 120226A: Fermi-GBM and Fermi-LAT detections; LAT position retraction
  17. GRB 120226A: Fermi-LAT data analysis
  18. IPN Triangulation of GRB 120226A
  19. GRB 120227A: RAPTOR Limit During the Gamma-Ray Emitting Interval
  20. GRB 120226A: Fermi-LAT detection of a burst
  21. Fermi GBM detection of an SGR-like burst
  22. GRB 120212A: Fermi GBM observation
  23. IPN Triangulation of GRB 120129A (long/intense)
  24. Fermi GBM trigger 120123.169 is not a GRB
  25. GRB 120119A: Fermi GBM observation
  26. GRB 120114A found in ground analysis of BAT data
  27. GRB 120107A: Suzaku WAM observation of the prompt emission
  28. GRB 120107A: Fermi GBM observation
  29. Konus-Wind observation of GRB 120107A
  30. IPN Triangulation of GRB 120107A
  31. GBM trigger 347620337 (GRB 120107A?) : High-energy photon emission in Fermi/LAT data
  32. GRB 111222A: Fermi GBM observations
  33. GRB 120102A: Fermi GBM observation
  34. FERMI GRB111228.45: MASTER observations
  35. GRB 111228A: Fermi GBM observation
  36. IPN Triangulation of GRB 111222A (short/hard/intense)
  37. GRB 111208A found in ground analysis of BAT data
  38. GRB 111201A: Confirmation of the X-ray afterglow
  39. GRB111201A: Swift-XRT observations
  40. GRB 111201A found in ground analysis of BAT data
  41. GRB 111117A: Fermi GBM observation
  42. GRB 111107A: Fermi GBM observation
  43. GRB 111103A: Fermi GBM observation
  44. GRB 111017A: Fermi GBM Detection
  45. GRB 111003A: Fermi GBM detection
  46. Fermi GBM triggers 110923481, 110924391 and 110925200 are not GRBs
  47. GCN for GRB 110921B
  48. GRB 110921A: Fermi GBM observation
  49. IPN triangulation of GRB 110918A (long duration, extremely intense)
  50. GRB 110903A: Fermi GBM observation
  51. GRB110825A: Fermi GBM observation
  52. GRB110825A: ROTSE early time optical limit
  53. IPN triangulation of GRB110825A (very intense, long-duration)
  54. Fermi GBM trigger 110823.518 is not a GRB
  55. GRB 110818A: Fermi GBM observation
  56. Fermi Gamma-ray Burst Monitor trigger 110809.346 is not a GRB
  57. Swift SGR 1834.9-0846: Swift-BAT refined analysis
  58. Fermi GBM detection of a SGR-like burst
  59. Fermi Gamma-ray Burst Monitor trigger 110806.263 is not a GRB
  60. Fermi GBM trigger 334123030 (110804165) is not a GRB
  61. EVLA observation for Fermi burst GRB 110721A
  62. GRB 110731A : Suzaku WAM observation of the prompt emission
  63. AXP 4U 0142+61: Fermi GBM detection
  64. Konus-Wind observation of GRB 110731A
  65. GRB 110731A: Fermi GBM observation
  66. Fermi-LAT Detection of GRB110731A
  67. GRB 110721A: Swift observations of afterglow candidate
  68. IPN triangulation of GRB 110721A
  69. GRB 110721A: Preliminary Swift/UVOT Upper Limits
  70. GRB 110721A: potential counterpart candidate
  71. Konus-Wind observation of GRB 110721A
  72. GRB 110721A: Fermi-LAT detection
  73. GRB 110721A: Fermi GBM detection
  74. Swift J1822.3-1606 : Fermi GBM observation
  75. Swift J1822.3-1606: A Probable New SGR in Ground Analysis of BAT Data
  76. Fermi Gamma-ray Burst Monitor trigger 332078586 is not a GRB
  77. GRB 110709A: Fermi GBM observation
  78. GRB 110705A: Suzaku WAM observation of the prompt emission
  79. Konus-Wind observation of GRB 110705A
  80. IPN triangulation of short hard GRB 110705A
  81. GRB 110705A: Fermi GBM detection
  82. GRB 110625A: Suzaku WAM observation of the prompt emission
  83. GRB 110625A: Fermi GBM and LAT observations
  84. GRB 110625A: Fermi LAT detection
  85. IPN triangulation of GRB110618A (long duration, extremely intense)
  86. Fermi Gamma-ray Burst Monitor trigger 110621949 is not a GRB
  87. GRB 110610A: Fermi GBM detection
  88. GRB 110529A: Fermi GBM detection
  89. Konus-Wind observation of GRB 110529A
  90. LAT Observations of GRB110529A
  91. Fermi Gamma-ray Burst Monitor trigger 328195911 is not a GRB
  92. Radio observations of GRB 110428A with the EVLA
  93. GRB 110426A: Fermi GBM detection
  94. GRB 110428A: Fermi-GBM observation
  95. GRB 110428A: Suzaku WAM observation of the prompt emission
  96. Fermi-GBM data processing and delivery
  97. GRB 110428A : Swift-XRT observations
  98. Konus-Wind observation of GRB 110428A
  99. GRB 110428A: Fermi-LAT Detection
  100. GRB 110426A: MASTER synchronous with MAXI/GSC observations

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