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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"

11559 results found.

  1. Fermi GBM trigger 300370702 (100709513) is not a GRB
  2. Konus-Wind observation of GRB 100707A
  3. IPN triangulation of GRB 100707A
  4. GRB 100707A: Fermi LAT detection
  5. GRB 100707A: Fermi GBM detection
  6. IPN triangulation of GRB 100701B
  7. GRB 100704A: Fermi GBM observation
  8. Fermi GBM trigger 299767472 (100702531) is not a GRB
  9. GRB 100701B: Fermi GBM detection
  10. GRB 100625A: Fermi GBM detection
  11. GRB 100619A: Correction to the Fermi GBM trigger time
  12. GRB 100619A: Fermi GBM detection
  13. Fermi GBM trigger 100612038 is not a GRB
  14. GRB 100615A: Fermi GBM detection
  15. GRB 100528A: Faulkes Telescope North Detection
  16. GRB 100528A: GROND detection in all bands
  17. GRB 100528A: Fermi GBM observation
  18. GRB100522A: Suzaku WAM observation of the prompt emission
  19. GRB 100522A: GROND observations, upper limits
  20. GRB 100522A: Fermi GBM observation
  21. Update to the configuration of the Fermi-LAT onboard GRB search
  22. Fermi/GBM trigger 295791986 - unreliable location
  23. GRB 100517A: MASTER-Net wide field camera prompt optical observations
  24. GRB 100510A: Fermi GBM detection/observation
  25. GRB 100511A: Fermi GBM detection/observation
  26. GRB 100510A: MAXI/GSC detection
  27. GRB100503A: Suzaku WAM observation of the prompt emission
  28. Fermi Gamma-ray Burst Monitor trigger 294712621 is not a GRB
  29. GRB 100504A: Fermi GBM observation
  30. GRB 100503A: Fermi GBM detection
  31. GRB 100427A: Fermi GBM detection
  32. GRB 100414A : EVLA Radio Detection
  33. GRB 100414A : WSRT Radio Detection
  34. GRB 100423B: Fermi GBM detection
  35. GRB 100414A: Radio Afterglow Detection with the Expanded VLA
  36. GRB 100414A: Confirmation of the X-ray afterglow
  37. GRB100414A: SAO RAS optical observations
  38. GRB 100414A: Suzaku WAM observation of the prompt emission
  39. GRB 100414A: Swift/UVOT Observations
  40. GRB 100414A: GROND Detection of the Optical Afterglow
  41. GRB 100414A: Gemini-N candidate and redshift
  42. GRB 100414A: Palomar Transient Factory Observations
  43. GRB 100414A: Swift-XRT detection of a possible X-ray afterglow
  44. GRB 100414A: IPN Localization
  45. Konus-Wind observation of GRB 100414B
  46. GRB 100414A: Fermi GBM detection
  47. GRB100414A: Fermi LAT detection
  48. GRB 100401A: Swift/UVOT Upper Limit
  49. Swift/BAT trigger 417974 (GRB100401A): Swift/XRT observations
  50. GRB 100401A: Fermi GBM detection
  51. IPN triangulation of GRB100324B
  52. Konus-Wind observation of GRB 100322A
  53. Fermi GBM detection of four Solar Flares
  54. GRB 100322A: Suzaku WAM observation of the prompt emission
  55. Fermi/GBM and Swift/BAT detection of a burst from SGR 1806-20
  56. GRB 100325A: Fermi LAT detection
  57. GRB 100325A: Fermi GBM detection
  58. GRB 100322A: Fermi GBM detection
  59. GRB 100224B: Fermi GBM detection
  60. GRB 100225A: Fermi LAT detection
  61. GRB 100225A: Fermi GBM detection
  62. GRB 100223A: Fermi GBM detection
  63. GRB 100218A : Fermi GBM detection
  64. GRB 100216A Short, hard GRB detected in ground analysis of Swift-BAT data
  65. GRB 100212A: Fermi GBM detection
  66. GRB 100205B: Fermi GBM detection
  67. GRB 100131A: MASTER-Net optical alert observations
  68. GRB 100206A: Fermi GBM observation
  69. GRB 100130B: Fermi GBM detection
  70. GRB 100113A: Fermi GBM detection
  71. GRB 100131A: Suzaku WAM observation of the prompt emission
  72. GRB 100131A: Fermi GBM detection
  73. GRB 100122A: Fermi GBM detection
  74. GRB 100122A: MASTER-Net optical observations
  75. GRB 100116A: Suzaku WAM observation of the prompt emission
  76. Konus-Wind observation of GRB 100116A
  77. GRB 100117A: Fermi GBM detection
  78. GRB 100116A: Fermi LAT detection
  79. GRB 100116A: Fermi GBM detection
  80. GRB 100111A: Fermi GBM observation
  81. GRB 091221: Fermi GBM Observation
  82. GRB 091208B: Fermi GBM observation
  83. GRB 091123: Suzaku WAM observation of the prompt emission
  84. GRB 091126A: Suzaku WAM observation of the prompt emission
  85. Konus-Wind observation of very long GRB 091123
  86. GRB 091123: Fermi GBM detection of a very long burst
  87. GRB 091126B: Fermi GBM detection
  88. GRB 091127: Suzaku WAM observation of the prompt emission
  89. GRB 091126: Fermi GBM detection
  90. GRB 091128: Fermi GBM detection
  91. GRB 091127: Fermi GBM detection
  92. IPN Triangulation of GRB091120
  93. Konus-Wind observation of GRB 091120
  94. GRB 091120: MAXI GSC detection
  95. GRB 091120: Fermi GBM observation
  96. GRB 091112: Suzaku WAM observation of the prompt emission
  97. GRB 091102A: Suzaku WAM observation of the prompt emission
  98. Konus-Wind and Konus-RF observations of GRB 091031
  99. GRB 091112: Fermi GBM observation
  100. GRB 091031: Fermi LAT detection of a faint burst

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Download all Circulars as a .tar.gz archive (updated once a day):
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