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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"

11630 results found.

  1. IPN Triangulation of GRB 130320B (very long/bright)
  2. Swift/XRT observation of GRB 130327B
  3. GRB 130310A: RATIR Observations
  4. Konus-Wind observation of GRB 130327B
  5. GRB 130327B: Fermi-LAT detection of a burst
  6. GRB 130327B: Fermi GBM detection
  7. GRB 130327B: gamma-ray detection by AGILE
  8. Konus-Wind observation of GRB 130325A
  9. GRB 130325A Tiled Swift observations
  10. GRB 130325A: Fermi LAT detection
  11. GRB 130325A: Fermi GBM detection
  12. GRB 130305A: optical upper limit in Mondy observatory
  13. Swift XRT observations of GRB 130310A
  14. GRB 130310A : Suzaku WAM observation of the prompt emission
  15. GRB 130305A: TLS Tautenburg observations
  16. IPN Triangulation of GRB 130307A
  17. Swift XRT observations of GRB 130310A
  18. GRB 130306A: Swift Detection of a Possible Afterglow
  19. Konus-Wind observation of GRB 130310A
  20. IPN triangulation of GRB 130310A
  21. GRB 130310A: Fermi GBM detection
  22. GRB 130310A: Fermi-LAT detection and localization
  23. IPN triangulation of GRB 130228A
  24. Konus-Wind observation of GRB 130306A
  25. GRB 130307A: Fermi GBM detection
  26. GRB 130306A: Fermi GBM observation
  27. GRB 130306A: MASTER-Net pre-Swift alert observation
  28. GRB 130306A: Swift detection of a burst
  29. GRB 130305A: P60 Observations
  30. GRB 130305A: Swift/XRT detection of the afterglow
  31. Konus-Wind observation of GRB 130305A
  32. GRB 130305A: Fermi GBM observation
  33. GRB 130305A: Fermi LAT Detection
  34. Fermi GBM trigger 130301.638 is not GRB
  35. GBM trigger 383712005 (GRB 130228A?) : Possible high-energy photon emission in Fermi/LAT data
  36. GRB 130305A found in ground analysis of Swift/BAT data
  37. Konus-Wind observation of GRB 130219A
  38. IPN Triangulation of GRB 130219A
  39. GRB 130219A: Fermi GBM detection
  40. GRB 130216B: MASTER-Net early observation
  41. GRB 130216A: MASTER-Net early observations
  42. GRB 130216A: Fermi GBM observation
  43. GRB 130216B: Fermi GBM observation
  44. GRB 130216B: Burst found in ground analysis of BAT data
  45. GRB 130215A: Fermi GBM detection
  46. GRB 130215A: ROTSE-III data analysis
  47. GRB 130206A: Fermi LAT Observations
  48. GRB 130206A: Fermi GBM observation
  49. GRB 130127A: Fermi GBM detection
  50. Konus-Wind observation of GRB 121225B
  51. IPN Triangulation of GRB 121225B
  52. GRB 121225B: Fermi GBM observation
  53. GRB 121225B: Fermi LAT Detection
  54. GRB 121217A: Fermi GBM observation
  55. GRB 121211A: Fermi GBM observation
  56. GRB 121202A: Fermi GBM observation
  57. IPN Triangulation of GRB 121127A (short/hard)
  58. GRB 121122A: Fermi GBM observation
  59. GRB 121128A: Fermi GBM observation
  60. IPN Triangulation of GRB 121122A (long/intense)
  61. GRB 121125A: Fermi GBM Observation
  62. GRB 121123A: GROND observations
  63. GRB 121123A: Fermi GBM observation
  64. IPN Triangulation of GRB 121118A
  65. Fermi GBM trigger 121115.186 is not a GRB
  66. GRB 121031A: Fermi GBM detection
  67. GRB 121029A Suzaku WAM observation of the prompt emission
  68. GRB 121029A: Fermi GBM detection
  69. GRB 121011A Suzaku WAM observation of the prompt emission
  70. GRB 121012A: Fermi GBM detection
  71. GRB 121011A: NOT redshift retraction
  72. GRB 121011A: Fermi GBM observation
  73. GRB 121011A: Fermi-LAT detection of a burst
  74. Further Swift-XRT observations of the GRB 120919A field.
  75. GRB 120921A: Fermi GBM detection of its 1000th GRB
  76. GRB 120916A Suzaku WAM observation of the prompt emission
  77. GRB 120922A: Fermi GBM detection
  78. GRB 120919B: MASTER prompt optical observations
  79. GRB 120919A: Swift-XRT observations
  80. IPN Triangulation of long GRB 120919B
  81. Konus-Wind observation of GRB 120919A
  82. IPN Triangulation of long GRB 120919A
  83. GRB 120919A: Fermi GBM detection
  84. GRB 120916A: Fermi GBM Observation
  85. Konus-Wind observation of GRB 120916A
  86. IPN Triangulation of long GRB 120916A
  87. GRB 120916A: Fermi-LAT detection of a burst
  88. Corrections to the Fermi-LAT upper limits for GRB 120807A, 120908A, 120909A, and 120911A
  89. GRB 120913B: Fermi GBM observation
  90. GRB 120913A: Fermi GBM observation
  91. Konus-Wind observation of GRB 120911B
  92. GRB 120911B: Fermi GBM observation
  93. GRB 120911B: Fermi-LAT detection of a burst
  94. GRB 120911A: Fermi GBM observation
  95. GRB 120911A: Fermi/LAT upper limit
  96. GRB 120908A and GRB 120909A : Fermi/LAT upper limit
  97. GRB 120908A: Fermi GBM detection
  98. GRB 120909A: Fermi GBM observation
  99. GRB 120907A: Fermi GBM detection
  100. GRB 120830A: Further Swift Observations

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