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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"

11659 results found.

  1. GRB 180914A: Fermi GBM detection
  2. GRB 180914A: Fermi-LAT detection
  3. Fermi-LAT Gamma-ray Observations of IceCube-180908A
  4. Fermi GBM trigger 557852757/180905629 is not a GRB
  5. Konus-Wind observation of GRB 180828A
  6. GRB 180828A: AstroSat CZTI detection
  7. GRB 180828A: Fermi GBM observation
  8. Fermi GBM trigger 557014342/180826925 is not a GRB
  9. Fermi GBM trigger 557008382/180826856 is not a GRB
  10. GRB 180818B: 1.5m OSN optical afterglow candidate
  11. GRB180806A: confirmation of the X-ray afterglow
  12. GRB 180818B: Fermi GBM observations
  13. GRB 180812A: Fermi GBM detection
  14. Konus-Wind observation of GRB 180809B
  15. MASTER: OT detection during two Fermi GBM triggers (555263883 and 555263883) error boxes inspection in 22.5 mag SDSS galaxy direction
  16. GRB 180806A: AstroSat CZTI detection
  17. Konus-Wind observation of GRB 180806A
  18. GRB 180809A: Fermi GBM observation
  19. GRB 180809A: CALET Gamma-Ray Burst Monitor detection
  20. GRB 180728A: AstroSat CZTI detection
  21. GRB180806A: correction to Circular 23097
  22. GRB 180723A: AstroSat CZTI detection
  23. GRB 180806A: NOT optical observations
  24. GRB 180806A: Swift-XRT afterglow detection
  25. GRB 180806A/180806.98: RATIR Optical Observations of MASTER OT J004613.05+242014.1
  26. GRB 180806A: Fermi GBM detection
  27. GRB 180806A/180806.94: Refined COATLI Photometry of MASTER OT J004613.05+242014.1
  28. GRB 180806A: Swift ToO observations
  29. GRB 180806.94: COATLI Detection of MASTER OT J004613.05+242014.1 and Confirmation of Fading
  30. GRB 180806.94: MASTER possible OT detection in Fermi GMB trigger 555287944 error box
  31. GRB 180805B: Fermi GBM detection
  32. Fermi Trigger 554765006: MASTER optical inspection
  33. Fermi GBM trigger 554730582/180731493 is not a GRB
  34. Konus-Wind observation of the bright nearby GRB 180728A
  35. GRB 180703B: CALET CAL gamma-ray analysis
  36. GRB 180728B: Fermi GBM detection
  37. IPN Triangulation of GRB 180728B (short)
  38. GRB 180728A: Fermi GBM observation
  39. GRB 180727A: Fermi GBM observation
  40. GRB 180727A: Swift detection of a burst
  41. GRB 180720B: CALET Gamma-Ray Burst Monitor detection
  42. GRB 180720B: OAJ optical observations
  43. GRB 180722B: Insight-HXMT/HE detection
  44. GRB 180724A: Insight-HXMT/HE detection
  45. GRB 180720B long follow up requested
  46. GRB 180723A: Fermi GBM detection
  47. GRB 180718B: Swift-XRT observations
  48. GRB 180723A: CALET Gamma-Ray Burst Monitor detection
  49. GRB 180722B: CALET Gamma-Ray Burst Monitor detection
  50. GRB 180723.13: MASTER optical observation of the short Fermi GBM trigger number 554008254
  51. GRB 180723.76: MASTER optical observation of the bright long Fermi GBM trigger number 554062193
  52. GRB 180720B: ISON-Castelgrande optical observations
  53. GRB 180715B: AstroSat CZTI detection
  54. GRB 180715A: AstroSat CZTI detection
  55. Konus-Wind observation of GRB 180720B
  56. Fermi Trigger 553879512: MASTER optical observation
  57. GRB 180720B: MAXI/GSC detection
  58. GRB 180720C: Fermi GBM observation
  59. GRB 180720B: OSN detection, fading slower?
  60. GRB 180720B: Fermi GBM observation
  61. GRB 180720B : Fermi-LAT detection
  62. GRB 180720A: Fermi GBM observation
  63. GRB 180718A: MASTER optical observation
  64. GRB180715B: Zwicky Transient Facility Follow-Up of a Fermi Short GRB (Trigger 553369644)
  65. GRB 180718B: Fermi GBM detection
  66. GRB 180718B: Swift ToO observations
  67. GRB 180718B: Fermi-LAT detection
  68. GRB 180718A: Fermi GBM detection
  69. GRB 180718A short GRB detected by IPN and found in ground analysis of BAT data
  70. GRB 180715A: CALET Gamma-Ray Burst Monitor detection
  71. GRB 180715A: Fermi GBM detection
  72. IceCube-171106A: MASTER optical observation
  73. GRB 180703A: optical afterglow confirmation
  74. GRB 180703B: further analysis of CGBM data
  75. GRB 180703A: Swift-XRT afterglow detection
  76. Konus-Wind observation of GRB 180703A
  77. GRB 180703A: MASTER optical observation
  78. IPN Triangulation of GRB 180703A
  79. GRB 180706A: Fermi GBM observation
  80. Konus-Wind observation of GRB 180703B
  81. IPN Triangulation of GRB 180703B
  82. Fermi GBM triggers 552488966/180705548 and 552490104/180705561 are not GRBs
  83. GRB 180703A: AstroSat CZTI detection
  84. GRB 180703A: Swift/UVOT Upper Limits
  85. GRB 180703B: Fermi GBM detection
  86. GRB 180703A: Fermi GBM detection
  87. GRB 180703A: LCO Sutherland possible optical candidate
  88. GRB 180703A: Swift-XRT observations
  89. GRB150101B: INTEGRAL prompt gamma-ray signal from a possible GRB170817A-analogue
  90. GRB 180703B: CALET Gamma-Ray Burst Monitor detection
  91. GRB 180703B: Fermi-LAT detection
  92. GRB 180703A: Fermi-LAT detection
  93. GRB 180703A: Tiled Swift observations
  94. GRB 180630A: Fermi GBM detection
  95. GRB 180626C / Fermi trigger 551697835: MASTER inspection
  96. GRB 180626C: Zwicky Transient Facility Follow-Up of a Fermi Short GRB (Trigger 551697835)
  97. IPN Triangulation of GRB 180626C (short)
  98. GRB 180623B: CALET Gamma-Ray Burst Monitor detection
  99. GRB 180620B: AstroSat CZTI detection
  100. GRB 180618A: AstroSat CZTI detection

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