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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"

11620 results found.

  1. GRB 130325A: Fermi GBM detection
  2. GRB 130305A: optical upper limit in Mondy observatory
  3. Swift XRT observations of GRB 130310A
  4. GRB 130310A : Suzaku WAM observation of the prompt emission
  5. GRB 130305A: TLS Tautenburg observations
  6. IPN Triangulation of GRB 130307A
  7. Swift XRT observations of GRB 130310A
  8. GRB 130306A: Swift Detection of a Possible Afterglow
  9. Konus-Wind observation of GRB 130310A
  10. IPN triangulation of GRB 130310A
  11. GRB 130310A: Fermi GBM detection
  12. GRB 130310A: Fermi-LAT detection and localization
  13. IPN triangulation of GRB 130228A
  14. Konus-Wind observation of GRB 130306A
  15. GRB 130307A: Fermi GBM detection
  16. GRB 130306A: Fermi GBM observation
  17. GRB 130306A: MASTER-Net pre-Swift alert observation
  18. GRB 130306A: Swift detection of a burst
  19. GRB 130305A: P60 Observations
  20. GRB 130305A: Swift/XRT detection of the afterglow
  21. Konus-Wind observation of GRB 130305A
  22. GRB 130305A: Fermi GBM observation
  23. GRB 130305A: Fermi LAT Detection
  24. Fermi GBM trigger 130301.638 is not GRB
  25. GBM trigger 383712005 (GRB 130228A?) : Possible high-energy photon emission in Fermi/LAT data
  26. GRB 130305A found in ground analysis of Swift/BAT data
  27. Konus-Wind observation of GRB 130219A
  28. IPN Triangulation of GRB 130219A
  29. GRB 130219A: Fermi GBM detection
  30. GRB 130216B: MASTER-Net early observation
  31. GRB 130216A: MASTER-Net early observations
  32. GRB 130216A: Fermi GBM observation
  33. GRB 130216B: Fermi GBM observation
  34. GRB 130216B: Burst found in ground analysis of BAT data
  35. GRB 130215A: Fermi GBM detection
  36. GRB 130215A: ROTSE-III data analysis
  37. GRB 130206A: Fermi LAT Observations
  38. GRB 130206A: Fermi GBM observation
  39. GRB 130127A: Fermi GBM detection
  40. Konus-Wind observation of GRB 121225B
  41. IPN Triangulation of GRB 121225B
  42. GRB 121225B: Fermi GBM observation
  43. GRB 121225B: Fermi LAT Detection
  44. GRB 121217A: Fermi GBM observation
  45. GRB 121211A: Fermi GBM observation
  46. GRB 121202A: Fermi GBM observation
  47. IPN Triangulation of GRB 121127A (short/hard)
  48. GRB 121122A: Fermi GBM observation
  49. GRB 121128A: Fermi GBM observation
  50. IPN Triangulation of GRB 121122A (long/intense)
  51. GRB 121125A: Fermi GBM Observation
  52. GRB 121123A: GROND observations
  53. GRB 121123A: Fermi GBM observation
  54. IPN Triangulation of GRB 121118A
  55. Fermi GBM trigger 121115.186 is not a GRB
  56. GRB 121031A: Fermi GBM detection
  57. GRB 121029A Suzaku WAM observation of the prompt emission
  58. GRB 121029A: Fermi GBM detection
  59. GRB 121011A Suzaku WAM observation of the prompt emission
  60. GRB 121012A: Fermi GBM detection
  61. GRB 121011A: NOT redshift retraction
  62. GRB 121011A: Fermi GBM observation
  63. GRB 121011A: Fermi-LAT detection of a burst
  64. Further Swift-XRT observations of the GRB 120919A field.
  65. GRB 120921A: Fermi GBM detection of its 1000th GRB
  66. GRB 120916A Suzaku WAM observation of the prompt emission
  67. GRB 120922A: Fermi GBM detection
  68. GRB 120919B: MASTER prompt optical observations
  69. GRB 120919A: Swift-XRT observations
  70. IPN Triangulation of long GRB 120919B
  71. Konus-Wind observation of GRB 120919A
  72. IPN Triangulation of long GRB 120919A
  73. GRB 120919A: Fermi GBM detection
  74. GRB 120916A: Fermi GBM Observation
  75. Konus-Wind observation of GRB 120916A
  76. IPN Triangulation of long GRB 120916A
  77. GRB 120916A: Fermi-LAT detection of a burst
  78. Corrections to the Fermi-LAT upper limits for GRB 120807A, 120908A, 120909A, and 120911A
  79. GRB 120913B: Fermi GBM observation
  80. GRB 120913A: Fermi GBM observation
  81. Konus-Wind observation of GRB 120911B
  82. GRB 120911B: Fermi GBM observation
  83. GRB 120911B: Fermi-LAT detection of a burst
  84. GRB 120911A: Fermi GBM observation
  85. GRB 120911A: Fermi/LAT upper limit
  86. GRB 120908A and GRB 120909A : Fermi/LAT upper limit
  87. GRB 120908A: Fermi GBM detection
  88. GRB 120909A: Fermi GBM observation
  89. GRB 120907A: Fermi GBM detection
  90. GRB 120830A: Further Swift Observations
  91. GRB 120830A: Swift-XRT and UVOT observations
  92. GRB 120830A: Fermi GBM observation
  93. Konus-Wind observation of GRB 120830A
  94. GRB 120830A: early MASTER optical limit
  95. IPN Triangulation of short GRB 120830A
  96. GRB 120830A: Fermi-LAT detection of a short burst
  97. Fermi trigger 368003226 : MASTER optical observations
  98. Konus-Wind observation of GRB 120817B
  99. GRB 120817B: Fermi GBM detection
  100. IPN Triangulation of GRB 120817B (short/very intense)

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