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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"

24587 results found.

  1. GRB 220624A: AGILE/GRID refined analysis
  2. Fermi-LAT Gamma-ray Observations of IceCube-220627A
  3. IceCube-220629A: No significant detection in HAWC
  4. IceCube-220629A - IceCube observation of a high-energy neutrino candidate track-like event
  5. IceCube-220627A: No significant detection in HAWC
  6. IceCube Alert 220629.99: Global MASTER-Net observations report
  7. Konus-Wind detection of GRB 220627A
  8. IceCube-220627A: Upper limits from a search for additional neutrino events in IceCube
  9. GRB 220627A: Fermi GBM Detection of a possible Lensed or Ultra-long GRB
  10. GRB 220627A: Swift/BAT-GUANO detection outside the coded FOV
  11. Konus-Wind detection of GRB 220624A
  12. Fermi-LAT Gamma-ray Observations of IceCube-220624A and and detection of a new gamma-ray source, Fermi J1458.0+4119
  13. GRB 220627A: Fermi-LAT detection
  14. Fermi trigger No 678058621: Global MASTER-Net observations report
  15. Fermi GRB 220627A: Global MASTER-Net observations report
  16. IceCube-Cascade 220625A: Upper limits from a search for additional neutrino events in IceCube
  17. GRB 220627A: Fermi GBM Final Real-time Localization
  18. IceCube-220627A - IceCube observation of a high-energy neutrino candidate track-like event
  19. IceCube Alert 220627.74: Global MASTER-Net observations report
  20. IceCube-220624A: Upper limits from a search for additional neutrino events in IceCube
  21. IceCube-220624A: No significant detection in HAWC
  22. GRB 220624A: CALET Gamma-Ray Burst Monitor detection
  23. GRB 220623A: T193-OHP optical upper limit
  24. IceCube-220624A: No Candidate Counterparts from the Zwicky Transient Facility
  25. GRB 220624A: Fermi GBM Detection
  26. Fermi GRB 220623B: Global MASTER-Net observations report
  27. Fermi GRB 220624A: Global MASTER-Net observations report
  28. IceCube Alert 220624.68: Global MASTER-Net observations report
  29. IPN triangulation of GRB 220624A
  30. GRB 220623A: Swift-BAT refined analysis
  31. GRB 220624A: Swift/BAT-GUANO detection outside the coded FOV
  32. GRB 220611A: X-ray afterglow Chandra sub-arcsecond localization
  33. GRB 220624A: AGILE/GRID analysis
  34. IceCube-220624A - IceCube observation of a high-energy neutrino candidate track-like event
  35. GRB 220624A: AGILE detection
  36. Konus-Wind detection of GRB 220623A
  37. GRB 220624B: Fermi GBM Final Real-time Localization
  38. GRB 220624A: Fermi GBM Final Real-time Localization
  39. Konus-Wind detection of GRB 220609B
  40. GRB 220623B: Fermi GBM Final Real-time Localization
  41. GRB 220623A: AGILE detection
  42. GRB 220623A: iTelescope optical upper limit
  43. GRB 220623A: Swift detection of a burst
  44. Fermi trigger No 677597318: Global MASTER-Net observations report
  45. GRB 220618A: Fermi GBM detection
  46. Swift Detection of MAXI J0655-013
  47. GRB 220618A: Swift-BAT refined analysis
  48. Konus-Wind detection of GRB 220617A
  49. Fermi trigger No 677377371: Global MASTER-Net observations report
  50. Fermi GRB 220620B: Global MASTER-Net observations report
  51. Fermi GRB 220620A: Global MASTER-Net observations report
  52. GRB 220620B: Fermi GBM Final Real-time Localization
  53. Integral GRB220619.53: Global MASTER-Net observations report
  54. Swift GRB220620.02: Global MASTER-Net observations report
  55. GRB 220620A: Fermi GBM Final Real-time Localization
  56. GRB 220617A: TNG optical observations
  57. Fermi trigger No 677307509: Global MASTER-Net observations report
  58. Fermi trigger No 677236224: Global MASTER-Net observations report
  59. GRB 220617A: Fermi GBM observation
  60. Swift Trigger 1110865 is probably not an astrophysical event
  61. GRB 220611A optical counterpart
  62. IPN triangulation of GRB 220617A (short)
  63. GRB 220617A: Swift-XRT observations
  64. Swift GRB220618.38: Global MASTER-Net observations report
  65. GRB 220617A: Fermi-LAT detection
  66. Fermi GRB 220617A: Global MASTER-Net observations report
  67. GRB 220617A: Fermi GBM Final Real-time Localization
  68. GRB 220611A: Gemini Ks counterpart detection
  69. Fermi trigger No 677174940: Global MASTER-Net observations report
  70. Konus-Wind detection of GRB 220613A
  71. IPN triangulation of GRB 220613A
  72. Konus-Wind detection of an intermediate flare from SGR 1935+2154 on June 16
  73. IPN triangulation of GRB 220606C
  74. Fermi trigger No 676909037: Global MASTER-Net observations report
  75. GRB 220612A: Swift/BAT-GUANO detection
  76. GRB 220611A: Swift-BAT refined analysis
  77. Swift GRB 220611A: Global MASTER-Net observations report
  78. GRB 220611A: Swift-XRT refined Analysis
  79. GRB 220611A: Swift detection of a burst
  80. IPN triangulation of GRB 220609B
  81. Fermi GRB 220610A: Global MASTER-Net observations report
  82. GRB 220610A: Fermi GBM Final Real-time Localization
  83. Fermi trigger No 676537486: Global MASTER-Net observations report
  84. Fermi trigger No 676366592: Global MASTER-Net observations report
  85. GRB 220609A: Fermi GBM Final Real-time Localization
  86. GRB 220606A: Fermi GBM observation
  87. Fermi GRB 220608A: Global MASTER-Net observations report
  88. GRB 220608A: Fermi GBM Final Real-time Localization
  89. MAXI GRB220607.31: Global MASTER-Net observations report
  90. MAXI GRB220607.41: Global MASTER-Net observations report
  91. GRB 220606B: Fermi GBM Observation
  92. Konus-Wind detection of GRB 220601A
  93. GRB 220606A: Swift/BAT-GUANO detection
  94. GRB 220606B: GUANO coordinate correction to GCN 32167
  95. GRB 220527A: A BdHN I with a clear UPE phase
  96. GRB 220606B: Swift/BAT-GUANO candidate arcminute localization of a short burst
  97. Fermi GRB 220606B: Global MASTER-Net observations report
  98. GRB 220606B: Fermi GBM Final Real-time Localization
  99. GRB 220606A: Fermi GBM Final Real-time Localization
  100. IPN triangulation of GRB 220601A (long)

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