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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"

11633 results found.

  1. GRB 181222B: Global MASTER Net observations of short bright Fermi GRB
  2. Konus-Wind observation of GRB 181222B
  3. IPN Triangulation of extremely bright short GRB 181222B
  4. GRB 181222A: CALET Gamma-Ray Burst Monitor detection
  5. GRB 181222B: Global MASTER Net observations of the short bright Fermi GRB error box.
  6. GRB 181222B : Fermi GBM detection
  7. GRB 181222A: Fermi GBM observation
  8. GRB 181217A: Insight-HXMT/HE detection
  9. GRB 181212A:Insight-HXMT/HE detection
  10. Konus-Wind observation of GRB 181212A
  11. IPN Triangulation of GRB 181212A (long)
  12. GRB 181212A: Fermi GBM Detection
  13. GRB 181126B: KAIT Follow-Up Observations of a Fermi Short GRB (Trigger 564897175)
  14. MASTER OT J063515.49-624002.9 of Fermi trigger 565936249: optical observations in SAAO
  15. MASTER: OTs detection during Fermi alert trigger 565936249 early observations
  16. GRB 181126B: Zwicky Transient Facility Follow-Up of a Fermi Short GRB (Trigger 564897175)
  17. Fermi-GBM Observations During Four New GW-Detected BBH Mergers (Correction)
  18. Fermi-GBM Observations During Four New GW-Detected BBH Mergers
  19. GRB 181201A: Insight-HXMT/HE detection
  20. GRB 181201A: Fermi-LAT detection
  21. Short-duration GRB 181121.4: MASTER-Tavrida possible OT detection near the PGC galaxy during large Fermi error box inspection
  22. GRB 181126A: Fermi GBM observation
  23. GRB 181125A: Fermi GBM observation
  24. GRB 181020A: AstroSat CZTI detection
  25. GRB 181119A: Insight-HXMT/HE detection
  26. GRB 181120A: Fermi GBM observation
  27. GRB 181120A: Fermi-LAT detection
  28. Fermi GRB 181105.31: Global MASTER Net optical observations
  29. GRB 181028A: Insight-HXMT/HE detection
  30. GRB 181028A: CALET Gamma-Ray Burst Monitor detection
  31. GRB 181026A: AstroSat CZTI detection
  32. Konus-Wind observation of GRB 181028A
  33. IPN Triangulation of GRB 181028A (long)
  34. GRB 181028A: Fermi GBM observation
  35. GRB 181028A: Fermi-LAT detection
  36. GRB 181027A: Fermi GBM detection
  37. GRB 180728B: Zwicky Transient Facility Follow-Up of a Fermi Short GRB (Trigger 554505003)
  38. Fermi-LAT Gamma-ray Observations of IceCube-181023A
  39. IceCube-181023A - IceCube observation of a high-energy neutrino candidate event
  40. Konus-Wind observation of GRB 181020A
  41. GRB 181020A: Swift/UVOT Detection
  42. GRB 181020A: Global MASTER Net OT observations
  43. GRB 181020A: VLT/X-shooter spectroscopy and redshift
  44. GRB 181020A: Fermi GBM detection
  45. GRB 181020A: Fermi-LAT detection
  46. GRB 181014A: Insight-HXMT/HE detection
  47. Fermi GBM Observation of IceCube-181014A
  48. Fermi-LAT Gamma-ray Observations of IceCube-181014A
  49. GRB180913A: Zwicky Transient Facility Follow-Up of a Fermi Short GRB (Trigger 558557292)
  50. GRB 181010A: Fermi GBM observation
  51. IPN Triangulation of GRB 181008B (long)
  52. GRB 181008A: Insight-HXMT/HE detection
  53. INTEGRAL detections of the prompt gamma-ray emission of GRB 180914B
  54. Konus-Wind observation of GRB 180923A
  55. GRB 180923B - GBM Correction to GCN 23263
  56. GRB 180923B: Fermi GBM detection
  57. GRB 180914B: OSN Detection and light curve/SED analysis
  58. Konus-Wind observation of GRB 180914A
  59. GRB 180914B: DDOTI/OAN Detection and Confirmation of Fading
  60. GRB 180914B: AstroSat CZTI detection
  61. GRB 180914A: AstroSat CZTI detection
  62. IPN Triangulation of GRB 180914A (long)
  63. GRB 180914B: VLT/X-shooter spectroscopic redshift
  64. GRB 180914B: AGILE/MCAL refined analysis
  65. GRB180914B: Swift UVOT detection of an optical afterglow
  66. Konus-Wind of the very bright GRB 180914B
  67. GRB 180914B: RATIR Optical and NIR Observations
  68. GRB 180914B: Swift-XRT afterglow detection
  69. GRB 180914A: RATIR Optical and NIR Observations
  70. GRB 180914B: Tiled Swift observations
  71. GRB 180914B: Fermi-LAT detection
  72. GRB 180914A: MASTER automatic inspection
  73. GRB 180914A: Swift-XRT observations
  74. GRB 180914A: Tiled Swift observations
  75. GRB 180914A: Fermi GBM detection
  76. GRB 180914A: Fermi-LAT detection
  77. Fermi-LAT Gamma-ray Observations of IceCube-180908A
  78. Fermi GBM trigger 557852757/180905629 is not a GRB
  79. Konus-Wind observation of GRB 180828A
  80. GRB 180828A: AstroSat CZTI detection
  81. GRB 180828A: Fermi GBM observation
  82. Fermi GBM trigger 557014342/180826925 is not a GRB
  83. Fermi GBM trigger 557008382/180826856 is not a GRB
  84. GRB 180818B: 1.5m OSN optical afterglow candidate
  85. GRB180806A: confirmation of the X-ray afterglow
  86. GRB 180818B: Fermi GBM observations
  87. GRB 180812A: Fermi GBM detection
  88. Konus-Wind observation of GRB 180809B
  89. MASTER: OT detection during two Fermi GBM triggers (555263883 and 555263883) error boxes inspection in 22.5 mag SDSS galaxy direction
  90. GRB 180806A: AstroSat CZTI detection
  91. Konus-Wind observation of GRB 180806A
  92. GRB 180809A: Fermi GBM observation
  93. GRB 180809A: CALET Gamma-Ray Burst Monitor detection
  94. GRB 180728A: AstroSat CZTI detection
  95. GRB180806A: correction to Circular 23097
  96. GRB 180723A: AstroSat CZTI detection
  97. GRB 180806A: NOT optical observations
  98. GRB 180806A: Swift-XRT afterglow detection
  99. GRB 180806A/180806.98: RATIR Optical Observations of MASTER OT J004613.05+242014.1
  100. GRB 180806A: Fermi GBM detection

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