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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.

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subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

24587 results found.

  1. Fermi trigger No 686403226: Global MASTER-Net observations report
  2. Fermi trigger No 686350260: Global MASTER-Net observations report
  3. Konus-Wind detection of GRB 220930A
  4. GRB 220930A: Swift-BAT refined analysis
  5. GRB 220930A: Swift-XRT refined Analysis
  6. GRB 220930A: LCOGT Optical Upper Limits
  7. Swift GRB 220930A: Global MASTER-Net observations report
  8. GRB 220930A: Swift detection of a burst
  9. Fermi-LAT gamma-ray observations of IceCube-220928A
  10. IceCube-220928A: Upper limits from a search for additional neutrino events in IceCube
  11. Konus-Wind detection of GRB 220927A
  12. IceCube-220928A - IceCube observation of a high-energy neutrino candidate track-like event
  13. Fermi GRB 220927A: Global MASTER-Net observations report
  14. IPN triangulation of GRB 220927A (long)
  15. GRB 220921A: LCOGT Optical Observations
  16. GRB 220927A: Fermi GBM Final Localization
  17. GRB 220924A: Fermi GBM detection
  18. Integral GRB220926.44: Global MASTER-Net observations report
  19. Ultra-long GRB 220525B: Konus-Wind and Fermi-GBM detection
  20. Swift GRB220926.34: Global MASTER-Net observations report
  21. Swift GRB 220926A: Global MASTER-Net observations report
  22. Analysis of long GRB 220926B detected by INTEGRAL
  23. GRB 220926A: Swift detection of a burst
  24. Fermi GRB 220925A: Global MASTER-Net observations report
  25. GRB 220924A: Swift/BAT-GUANO detection outside the coded FOV
  26. GRB 220925A: Fermi GBM Final Real-time Localization
  27. Fermi trigger No 685748699: Global MASTER-Net observations report
  28. GRB 220924A: Fermi GBM Final Real-time Localization
  29. Swift GRB220923.47: Global MASTER-Net observations report
  30. Konus-Wind detection of GRB 220921A
  31. GRB 220921A: Fermi GBM detection
  32. GRB 220921A: MeerLICHT afterglow observations
  33. LAT GRB220921.46: Global MASTER-Net observations report
  34. GRB 220921A: Fermi-LAT detection
  35. Fermi trigger No 685452089: Global MASTER-Net observations report
  36. Fermi-LAT gamma-ray observations of IceCube-220918A and detection of a new gamma-ray source, Fermi J0502.5+0037
  37. IceCube-220918A: Upper limits from a search for additional neutrino events in IceCube
  38. IceCube Alert 220918.53: Global MASTER-Net observations report
  39. IceCube-220918A - IceCube observation of a high-energy neutrino candidate track-like event
  40. Fermi trigger No 684894705: Global MASTER-Net observations report
  41. IceCube-220907A: No significant detection in HAWC
  42. Fermi trigger No 684927323: Global MASTER-Net observations report
  43. Fermi trigger No 684911625: Global MASTER-Net observations report
  44. GRB 220909A: Fermi GBM observation
  45. Konus-Wind detection of GRB 220910A
  46. GRB 220910B: Fermi GBM Final Localization
  47. Fermi trigger No 684716840: Global MASTER-Net observations report
  48. Fermi GRB 220912A: Global MASTER-Net observations report
  49. GRB 220910A: Fermi GBM observation
  50. IPN triangulation of GRB 220910A (bright/long)
  51. GRB 220909A: Swift-XRT observations
  52. GRB 220912A: Fermi GBM Final Real-time Localization
  53. IPN triangulation of GRB 220905A
  54. GRB 220909A: Swift/BAT-GUANO candidate arcminute localization
  55. GRB 220831A: Gemini-South Infrared Observations
  56. GRB 220909A: Fermi GBM Final Real-time Localization
  57. IceCube-220907A: Upper limits from a search for additional neutrino events in IceCube
  58. GRB 220907A: Swift-BAT refined analysis
  59. IceCube-220907A: One Candidate Counterpart from the Zwicky Transient Facility
  60. GRB 220831A: Gemini-South/GMOS detection of potential optical counterpart
  61. IPN triangulation of GRB 220903A (long)
  62. GRB 220907A: Fermi GBM observation
  63. Fermi-LAT Gamma-ray Observations of IceCube-220907A
  64. GRB 220907A: Fermi GBM Final Real-time Localization
  65. Swift GRB220907.59: Global MASTER-Net observations report
  66. IceCube-220907A - IceCube observation of a high-energy neutrino candidate track-like event
  67. IceCube Alert 220907.28: Global MASTER-Net observations report
  68. Fermi GRB 220905A: Global MASTER-Net observations report
  69. GRB 220905A: BALROG localization (Fermi Trigger 684070128 / GRB 220905478)
  70. GRB 220905A: Fermi GBM Final Real-time Localization
  71. Fermi GRB 220902A: Global MASTER-Net observations report
  72. GRB 220902A: Fermi GBM Final Real-time Localization
  73. GRB 220831A, VLT/HAWK-I near-infrared observations
  74. GRB 220831C: Fermi GBM Final Localization
  75. GRB 220831A: Fermi GBM observation
  76. GRB 220831A: Swift-XRT observations
  77. GRB 220831B: Fermi GBM Final Localization
  78. Fermi trigger No 683654200: Global MASTER-Net observations report
  79. GRB 220831A: Swift/BAT-GUANO localization of a short burst
  80. Fermi trigger No 683646997: Global MASTER-Net observations report
  81. IceCube-220822A: No significant detection in HAWC
  82. Fermi trigger No 683537972: Global MASTER-Net observations report
  83. Fermi trigger No 683476673: Global MASTER-Net observations report
  84. Konus-Wind detection of GRB 220826A
  85. IceCube-Cascade 220826A: Upper limits from a search for additional neutrino events in IceCube
  86. GRB 220827A: Fermi GBM Final Real-time Localization
  87. GRB 220826A: Swift-BAT refined analysis
  88. GRB 220826A: Fermi GBM observation
  89. Fermi trigger No 683202084: Global MASTER-Net observations report
  90. Fermi trigger No 683183601: Global MASTER-Net observations report
  91. Fermi trigger No 683152759: Global MASTER-Net observations report
  92. GRB 220826A: Swift-XRT refined Analysis
  93. GRB 220825A: Fermi GBM observation
  94. Swift GRB 220826A: Global MASTER-Net observations report
  95. GRB 220825A: Swift/BAT-GUANO detection
  96. GRB 220825A: Fermi GBM Final Localization
  97. IceCube-220822A: Upper limits from a search for additional neutrino events in IceCube
  98. IceCube-220822A: One Candidate Counterpart from the Zwicky Transient Facility
  99. GRB 220823A: Fermi GBM detection
  100. Fermi-LAT gamma-ray observations of IceCube-220822A and detection of a new gamma-ray source, Fermi J1810.1+2154

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