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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 130310A: Fermi GBM detection
  2. GRB 130310A: Fermi-LAT detection and localization
  3. IPN triangulation of GRB 130228A
  4. Konus-Wind observation of GRB 130306A
  5. GRB 130307A: Fermi GBM detection
  6. GRB 130306A: Fermi GBM observation
  7. GRB 130306A: MASTER-Net pre-Swift alert observation
  8. GRB 130306A: Swift detection of a burst
  9. GRB 130305A: P60 Observations
  10. GRB 130305A: Swift/XRT detection of the afterglow
  11. Konus-Wind observation of GRB 130305A
  12. GRB 130305A: Fermi GBM observation
  13. GRB 130305A: Fermi LAT Detection
  14. Fermi GBM trigger 130301.638 is not GRB
  15. GBM trigger 383712005 (GRB 130228A?) : Possible high-energy photon emission in Fermi/LAT data
  16. GRB 130305A found in ground analysis of Swift/BAT data
  17. Konus-Wind observation of GRB 130219A
  18. IPN Triangulation of GRB 130219A
  19. GRB 130219A: Fermi GBM detection
  20. GRB 130216B: MASTER-Net early observation
  21. GRB 130216A: MASTER-Net early observations
  22. GRB 130216A: Fermi GBM observation
  23. GRB 130216B: Fermi GBM observation
  24. GRB 130216B: Burst found in ground analysis of BAT data
  25. GRB 130215A: Fermi GBM detection
  26. GRB 130215A: ROTSE-III data analysis
  27. GRB 130206A: Fermi LAT Observations
  28. GRB 130206A: Fermi GBM observation
  29. GRB 130127A: Fermi GBM detection
  30. Konus-Wind observation of GRB 121225B
  31. IPN Triangulation of GRB 121225B
  32. GRB 121225B: Fermi GBM observation
  33. GRB 121225B: Fermi LAT Detection
  34. GRB 121217A: Fermi GBM observation
  35. GRB 121211A: Fermi GBM observation
  36. GRB 121202A: Fermi GBM observation
  37. IPN Triangulation of GRB 121127A (short/hard)
  38. GRB 121122A: Fermi GBM observation
  39. GRB 121128A: Fermi GBM observation
  40. IPN Triangulation of GRB 121122A (long/intense)
  41. GRB 121125A: Fermi GBM Observation
  42. GRB 121123A: GROND observations
  43. GRB 121123A: Fermi GBM observation
  44. IPN Triangulation of GRB 121118A
  45. Fermi GBM trigger 121115.186 is not a GRB
  46. GRB 121031A: Fermi GBM detection
  47. GRB 121029A Suzaku WAM observation of the prompt emission
  48. GRB 121029A: Fermi GBM detection
  49. GRB 121011A Suzaku WAM observation of the prompt emission
  50. GRB 121012A: Fermi GBM detection
  51. GRB 121011A: NOT redshift retraction
  52. GRB 121011A: Fermi GBM observation
  53. GRB 121011A: Fermi-LAT detection of a burst
  54. Further Swift-XRT observations of the GRB 120919A field.
  55. GRB 120921A: Fermi GBM detection of its 1000th GRB
  56. GRB 120916A Suzaku WAM observation of the prompt emission
  57. GRB 120922A: Fermi GBM detection
  58. GRB 120919B: MASTER prompt optical observations
  59. GRB 120919A: Swift-XRT observations
  60. IPN Triangulation of long GRB 120919B
  61. Konus-Wind observation of GRB 120919A
  62. IPN Triangulation of long GRB 120919A
  63. GRB 120919A: Fermi GBM detection
  64. GRB 120916A: Fermi GBM Observation
  65. Konus-Wind observation of GRB 120916A
  66. IPN Triangulation of long GRB 120916A
  67. GRB 120916A: Fermi-LAT detection of a burst
  68. Corrections to the Fermi-LAT upper limits for GRB 120807A, 120908A, 120909A, and 120911A
  69. GRB 120913B: Fermi GBM observation
  70. GRB 120913A: Fermi GBM observation
  71. Konus-Wind observation of GRB 120911B
  72. GRB 120911B: Fermi GBM observation
  73. GRB 120911B: Fermi-LAT detection of a burst
  74. GRB 120911A: Fermi GBM observation
  75. GRB 120911A: Fermi/LAT upper limit
  76. GRB 120908A and GRB 120909A : Fermi/LAT upper limit
  77. GRB 120908A: Fermi GBM detection
  78. GRB 120909A: Fermi GBM observation
  79. GRB 120907A: Fermi GBM detection
  80. GRB 120830A: Further Swift Observations
  81. GRB 120830A: Swift-XRT and UVOT observations
  82. GRB 120830A: Fermi GBM observation
  83. Konus-Wind observation of GRB 120830A
  84. GRB 120830A: early MASTER optical limit
  85. IPN Triangulation of short GRB 120830A
  86. GRB 120830A: Fermi-LAT detection of a short burst
  87. Fermi trigger 368003226 : MASTER optical observations
  88. Konus-Wind observation of GRB 120817B
  89. GRB 120817B: Fermi GBM detection
  90. IPN Triangulation of GRB 120817B (short/very intense)
  91. GRB 120811B: Fermi GBM observation
  92. GCN for GRB 120811C
  93. Improved IPN error box for short hard GRB 120811B
  94. IPN Triangulation of short hard GRB 120811B
  95. GRB 120807A: Fermi/LAT upper limit
  96. Fermi/GBM detection of an SGR-like burst
  97. GRB 120728A: Fermi GBM observation
  98. GRB 120729A: Fermi GBM observation
  99. GRB 120728B: Fermi GBM detection
  100. IPN Triangulation of GRB 120728B (long/intense)

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