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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"

43952 results found.

  1. GRB 170728B: LT afterglow confirmation
  2. GRB 170728B: NOT optical afterglow confirmation
  3. GRB 170728B: TNG optical afterglow candidate
  4. GRB 170728B: Swift detection of a short burst
  5. GRB 170728A: Swift-BAT refined analysis
  6. Swift triggers on a new galactic source: Swift J181723.1-164300
  7. GRB 170728A: Enhanced Swift-XRT position
  8. GRB 170728A: Swift detection of a burst
  9. GRB 170726A: Insight-HXMT detection
  10. GRB 170724A, Swift-BAT refined analysis
  11. GRB 170724A: Swift detection of a burst
  12. Fermi GBM trigger 522477026/170723188 is not a GRB
  13. Fermi GBM trigger 522470841/170723116 is not a GRB
  14. Fermi GBM trigger 522334209/170721535 is not a GRB
  15. GRB170714A: ATCA observation
  16. GRB 170714A: Bastille Day Burst redshift from OSIRIS/GTC
  17. Trigger 763539 from Swift is probably not astrophysical
  18. Fermi GBM trigger 522048561/170718229 is not a GRB
  19. GRB 170714A: NOEMA non-detection of the Bastille Day Burst
  20. LIGO/Virgo G275697: LOFAR follow-up
  21. GRB 170710B: Further Swift-XRT observations
  22. Correction to GCN Circular 21351: GRB 170714A: Swift/UVOT Observations
  23. GRB170714A: VLA Observations of the Bastille Day Ultra-long Burst
  24. GRB 170714A: Swift/UVOT Observations
  25. GRB 170714A: TNG NIR observations
  26. Fermi GBM trigger 521905898/170716577 is not a GRB
  27. GRB 170702A: AstroSat CZTI detection
  28. GRB 170714A, Swift-BAT refined analysis
  29. GRB 170714A: z-band afterglow candidate for OSIRIS/GTC
  30. GRB 170714A: Bastille Day Burst: ULGRB or RTDE?
  31. GRB 170714B: Insight-HXMT detection
  32. GRB 170714A: Swift-XRT refined Analysis
  33. Fermi GBM Detection of possible burst from AXP 4U 0142+61
  34. GRB 170714A: Enhanced Swift-XRT position
  35. GRB 170714A: Swift detection of a burst
  36. GRB 170712A: AstroSat CZTI detection
  37. GRB 170710D CALET Gamma-Ray Burst Monitor detection
  38. GRB 170708B CALET Gamma-Ray Burst Monitor detection
  39. GRB 170703A CALET Gamma-Ray Burst Monitor detection
  40. GRB 170702A CALET Gamma-Ray Burst Monitor detection
  41. GRB 170711A: ISON/Terskol and AbAO optical observations
  42. GRB 170712A: Insight-HXMT detection
  43. GRB 170711A: Swift-BAT refined analysis
  44. Konus-Wind observation of GRB 170708A
  45. GRB 170711A: RATIR Optical and NIR Observations
  46. GRB 170705A: AstroSat CZTI detection
  47. GRB 170710C: a long GRB detected by INTEGRAL
  48. GRB 170711A: Swift-XRT refined Analysis
  49. GRB 170711A: Fermi GBM observation
  50. GRB 170711A: Enhanced Swift-XRT position
  51. GRB 170711A: Prompt enhanced Swift-XRT position
  52. GRB 170711A: Swift detection of a burst
  53. GRB 170705A: TShAO optical observations
  54. GRB 170710B: Fermi GBM observation
  55. GRB 170710B: Swift-XRT and UVOT observations
  56. GRB 170710B: Swift ToO observations
  57. GRB 170710B: Swift detection of a burst
  58. GRB170710A: Swift/UVOT detection
  59. IPN Triangulation of GRB 170708A (short)
  60. GRB 170710A: Swift-BAT refined analysis
  61. GRB 170710A: Swift-XRT refined Analysis
  62. GRB 170710A: Gemini-S candidate counterpart
  63. GRB 170710A: Enhanced Swift-XRT position
  64. GRB 170710A: Prompt enhanced Swift-XRT position
  65. GRB 170710A: Swift detection of a burst
  66. GRB 170708A: Insight-HXMT detection
  67. Correction to GCN Circular 21305: Trigger 760835: Swift misidentification of GRS1716-249
  68. Trigger 760835: Swift misidentification of GRS1716-249
  69. LIGO/Virgo G288732: Konus-Wind observations
  70. GRB 170705A: Further RATIR Optical and NIR Observations and Steepening of Fading
  71. GRB 170705A: KAIT Optical Observations
  72. GRB 170705A: Insight-HXMT observation
  73. GRB 170705A: ISON/Terskol optical observations
  74. Konus-Wind observation of GRB 170705A
  75. GRB 170705A: Redshift from 10.4m GTC/OSIRIS
  76. GRB 170705A: Fermi GBM observation
  77. GRB 170705A: Swift-BAT refined analysis
  78. GRB 170705A: Swift/UVOT Detection
  79. GRB 170705A: RATIR Optical and NIR Observations
  80. GRB 170705A: Swift-XRT refined Analysis
  81. GRB 170705A: MASTER-OAFA early OT observations
  82. GRB 170705A: Enhanced Swift-XRT position
  83. GRB 170705A: Swift detection of a burst with an optical counterpart
  84. GRB 170629A: Swift-XRT refined Analysis
  85. GRB 170629A: Swift-BAT refined analysis
  86. GRB 170629A: Enhanced Swift-XRT position
  87. GRB 170629A: Fermi GBM observation
  88. LIGO/Virgo G274296: Updated localization from LIGO data
  89. GRB 170629A: Swift detection of a burst
  90. GRB 170626B CALET Gamma-Ray Burst Monitor detection
  91. LIGO/Virgo G270580: Candidate retracted due to H1 data quality
  92. Konus-Wind observation of GRB 170626B
  93. IPN Triangulation of GRB 170626B
  94. Konus-Wind observation of GRB 170626A
  95. GRB 170626A: SAO RAS confirmation of OT fading
  96. GRB 170626A: TShAO optical observations
  97. GRB 170607A: 15 GHz upper limits from AMI
  98. GRB 170626A: Insight-HXMT observation
  99. GRB 170626A: OASDG optical observations
  100. GRB 170626A: MASTER-Tunka OT detection.

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