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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').
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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"

43998 results found.

  1. GRB 180204A: Swift-XRT refined Analysis
  2. GRB 180204A: Swift detection of a short burst
  3. GW170817/GRB170817A: Updated results from the full Chandra dataset
  4. GRB 180126A CALET Gamma-Ray Burst Monitor detection
  5. GW170817/GRB170817A: Preliminary results of Chandra monitoring
  6. LIGO/Virgo GW170817: Chandra X-ray Emission Continues to Rise ~156 Days Post-Merger
  7. GRB 180120A: AstroSat CZTI detection
  8. Fermi GBM trigger 538030981/180119210 is not a GRB
  9. LIGO/Virgo G298048 GRAWITA: VST-ESO PARANAL follow up of AT2017gfo
  10. GRB 180120A: Fermi GBM Detection
  11. GRB 180120A CALET Gamma-Ray Burst Monitor detection
  12. Fermi GBM trigger 538316685/180122517 is not a GRB
  13. GRB 180113B: AstroSat CZTI detection
  14. GRB 180113A: AstroSat CZTI detection
  15. GRB 180115A: SEDM Observations
  16. GRB 180116A CALET Gamma-Ray Burst Monitor detection
  17. Konus-Wind observation of GRB 171209A
  18. GRB 180113A CALET Gamma-Ray Burst Monitor detection
  19. GRB 180112A CALET Gamma-Ray Burst Monitor detection
  20. GRB 180116A: Fermi GBM Detection
  21. Konus-Wind observation of GRB 180113B
  22. IPN Triangulation of GRB 180113B
  23. GRB 180112A: Insight-HXMT/HE detection/observation
  24. GRB 180111A AROMA-N optical observation
  25. Konus-Wind observation of GRB 180113C
  26. e-MERLIN detection of GRB 171205A
  27. IPN Triangulation of GRB 180113C
  28. GRB 180115A: Swift-BAT refined analysis
  29. GRB 180116A: MAXI/GSC detection
  30. GRB 180115A: Redshift from OSIRIS/GTC
  31. GRB 180115A: NOT detection of optical counterpart
  32. Konus-Wind observation of GRB 180113A
  33. GRB 180113C: Insight-HXMT/HE observation
  34. GRB 180113B: Insight-HXMT/HE observation
  35. GRB 180111A: Insight-HXMT/HE observation
  36. GRB 180113A: Swift ToO observations
  37. GRB 180115A: Swift-XRT refined Analysis
  38. GRB 180115A: Enhanced Swift-XRT position
  39. Konus-Wind observation of GRB 180111A
  40. GRB 180115A: Swift detection of a burst with an optical counterpart.
  41. GRB 180113C: Fermi GBM detection
  42. GRB 180111A CALET Gamma-Ray Burst Monitor detection
  43. GRB 180113A: Swift-BAT refined analysis
  44. GRB 180111A: AbAO optical observations
  45. GRB 180113A: KAIT Optical Observations
  46. GRB 180113B: Fermi GBM detection
  47. GRB 180113A: Fermi GBM observation
  48. GRB 180111A: Swift/UVOT Detection
  49. GRB 180103A: Swift-XRT afterglow detection
  50. GRB 180113A: Swift detection of a burst
  51. GRB 180111A: Swift-BAT refined analysis
  52. GRB 180111A: RATIR Optical and NIR Observations
  53. GRB 180111A: Swift-XRT refined Analysis
  54. GRB 180111A: AGILE/MCAL detection
  55. GRB180111A: Xinglong TNT possible optical detection
  56. GRB 180111A: Enhanced Swift-XRT position
  57. GRB 180111A: Swift detection of a burst with an optical counterpart
  58. GRB 171230B: Insight-HXMT/HE detection
  59. GRB 180103A: LCO Sutherland 1-m telescope observations
  60. Konus-Wind observation of GRB 180103A
  61. GRB 171227A: AstroSat CZTI detection
  62. GRB 171223A; AstroSat CZTI detection
  63. Fermi GBM Trigger 537135776/180108849 is not a GRB
  64. GRB 180103A: AstroSat CZTI detection
  65. GRB 180103A: Swift/UVOT Upper Limits
  66. GRB 180103A: Swift-XRT observations
  67. GRB 171230A CALET Gamma-Ray Burst Monitor detection
  68. GRB 180103A: Swift ToO observations
  69. GRB 180103A: Swift detection of a burst
  70. GRB 171229A CALET Gamma-Ray Burst Monitor detection
  71. GRB 180102A AROMA-N optical observation
  72. VLBA detection of GRB 171205A
  73. GRB 180102A: TSHAO optical upper limit
  74. GRB 180102A: Swift-BAT refined analysis
  75. GRB 180102A: Swift/UVOT Upper Limits
  76. GRB 180102A: NOT optical observations
  77. GRB 180102A: MASTER-Net robotic report
  78. GRB 180102A: Swift-XRT refined Analysis
  79. GRB 180102A: Fermi GBM detection
  80. GRB 180102A: Enhanced Swift-XRT position
  81. GRB 180102A: Prompt enhanced Swift-XRT position
  82. GRB 180102A: Swift detection of a burst
  83. Konus-Wind observation of GRB 171227A
  84. IPN Triangulation of GRB 171227A
  85. GRB 171227A: Fermi GBM detection
  86. GRB 171227A: AGILE/MCAL detection
  87. GRB 171215A: Insight-HXMT/HE detection
  88. GRB 171223A: Insight-HXMT/HE detection
  89. GRB 171212C CALET Gamma-Ray Burst Monitor detection
  90. Konus-Wind observation of GRB 171216B
  91. IceCube-171106A: Konus-Wind upper limits
  92. IceCube-171015A: Konus-Wind upper limits
  93. IceCube-170922A: Konus-Wind upper limits
  94. GRB 171222A: Swift-BAT refined analysis
  95. GRB 171222A: AROMA-N optical observation
  96. GRB 171223A: Fermi GBM detection
  97. GRB 171222A: Fermi GBM detection
  98. GRB 171222A: Nanshan-0.36m optical upper limit
  99. GRB 171222A: Swift/UVOT Upper Limits
  100. GRB 171222A: Nanshan-1m optical afterglow detection

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