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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"

24584 results found.

  1. IBAS weak Alert nr.7881: possible GRB 170730A
  2. Swift J181723.1-164300: Swift-BAT refined analysis
  3. GRB 170728B, Swift-BAT refined analysis
  4. GRB 170728B: Fermi GBM detection
  5. GRB 170728B: Fermi-LAT detection
  6. GRB 170728B: LT afterglow confirmation
  7. GRB 170728A: Swift-BAT refined analysis
  8. GRB 170726A: Insight-HXMT detection
  9. GRB 170724A, Swift-BAT refined analysis
  10. GRB 170724A: Swift detection of a burst
  11. LIGO/Virgo G275697: LOFAR follow-up
  12. GRB170714A: VLA Observations of the Bastille Day Ultra-long Burst
  13. GRB 170714A: TNG NIR observations
  14. GRB 170714A, Swift-BAT refined analysis
  15. GRB 170714A: z-band afterglow candidate for OSIRIS/GTC
  16. GRB 170714A: Swift-XRT refined Analysis
  17. Fermi GBM Detection of possible burst from AXP 4U 0142+61
  18. GRB 170712A: AstroSat CZTI detection
  19. GRB 170710D CALET Gamma-Ray Burst Monitor detection
  20. GRB 170708B CALET Gamma-Ray Burst Monitor detection
  21. GRB 170703A CALET Gamma-Ray Burst Monitor detection
  22. GRB 170702A CALET Gamma-Ray Burst Monitor detection
  23. GRB 170712A: Insight-HXMT detection
  24. GRB 170711A: Swift-BAT refined analysis
  25. Konus-Wind observation of GRB 170708A
  26. GRB 170710C: a long GRB detected by INTEGRAL
  27. GRB 170711A: Fermi GBM observation
  28. GRB 170710B: Fermi GBM observation
  29. GRB 170710B: Swift detection of a burst
  30. IPN Triangulation of GRB 170708A (short)
  31. GRB 170710A: Swift-BAT refined analysis
  32. GRB 170710A: Swift detection of a burst
  33. GRB 170708A: Insight-HXMT detection
  34. LIGO/Virgo G288732: Konus-Wind observations
  35. GRB 170705A: KAIT Optical Observations
  36. GRB 170705A: Insight-HXMT observation
  37. Konus-Wind observation of GRB 170705A
  38. GRB 170705A: Fermi GBM observation
  39. GRB 170705A: Swift-BAT refined analysis
  40. GRB 170705A: MITSuME Akeno Optical Observation
  41. GRB 170705A: RATIR Optical and NIR Observations
  42. GRB 170705A: Swift-XRT refined Analysis
  43. GRB 170705A: MASTER-OAFA early OT observations
  44. GRB 170629A: Swift-BAT refined analysis
  45. GRB 170629A: Fermi GBM observation
  46. LIGO/Virgo G274296: Updated localization from LIGO data
  47. GRB 170629A: Swift detection of a burst
  48. GRB 170626B CALET Gamma-Ray Burst Monitor detection
  49. Konus-Wind observation of GRB 170626B
  50. IPN Triangulation of GRB 170626B
  51. Konus-Wind observation of GRB 170626A
  52. GRB 170626A: TShAO optical observations
  53. GRB 170626A: Insight-HXMT observation
  54. GRB 170626A: MASTER-Tunka OT detection.
  55. GRB 170626A: Swift-BAT refined analysis
  56. GRB 170626A: Swift-XRT refined Analysis
  57. GRB 170626A: Fermi GBM observation
  58. GRB 170626B: The first GRB detected by the Insight-HXMT X-ray Telescope (revised)
  59. LIGO/Virgo G288732: Fermi GBM Upper Limits for the LIGO Trigger and LAT Candidate
  60. LIGO/Virgo G288732: Pan-STARRS coverage of the Fermi/LAT candidate position
  61. Swift trigger 758168 is probably not an astrophysical source
  62. Konus-Wind observation of GRB 170616A
  63. IPN Triangulation of GRB 170616A (short/hard)
  64. GRB 170614A: AstroSat CZTI detection
  65. GRB 170614A CALET Gamma-Ray Burst Monitor detection
  66. Swift Trigger 756953 is probably not an astrophysical source
  67. GRB170612.87 MASTER-Net OT detection
  68. LIGO/Virgo G288732: HAWC follow-up
  69. Konus-Wind observation of GRB 170604A
  70. Konus-Wind observation of GRB 170607B
  71. LIGO/Virgo G288732: UKIRT near-IR imaging of the Fermi/LAT candidate
  72. LIGO/Virgo G288732: LBT optical imaging of the Fermi/LAT candidate
  73. IPN Triangulation of GRB 170607B
  74. LIGO/Virgo G288732 : MAXI/GSC observations
  75. LIGO/Virgo G288732: Updated sky map from gravitational-wave data
  76. GRB 170607B: Fermi GBM detection
  77. LIGO/Virgo G288732: Swift/BAT data search
  78. LIGO/Virgo G288732: Swift-XRT follow up of the putative LAT counterpart
  79. LIGO/Virgo G288732: INTEGRAL search for a prompt gamma-ray counterpart
  80. GRB 170607A: Swift-BAT refined analysis
  81. LIGO/Virgo G288732:SVOM/Mini-GWAC observations of the initial skymap
  82. LIGO/Virgo G288732: AGILE GRID Observations
  83. LIGO/Virgo G288732: Fermi-LAT detection of a weak candidate
  84. LIGO/Virgo G288732: IceCube neutrino observations update
  85. LIGO/Virgo G288732: AGILE MCAL Observations
  86. LIGO/Virgo G288732 ANTARES search
  87. LIGO/VIRGO G288732: Fermi GBM Observations
  88. LIGO/Virgo G288732: Identification of a GW Binary Merger Candidate
  89. GRB 170607A: MASTER-Tavrida early OT observations
  90. GRB 170607A: Fermi GBM observation
  91. GRB 170607A: NOT optical afterglow detection
  92. GRB 170607A: Swift-XRT refined Analysis
  93. GRB 170531B: WHT spectroscopy
  94. Swift Trigger 755873: MASTER Net optical observations
  95. GRB 170604A: Swift-XRT refined Analysis
  96. GRB 170604A: Swift-BAT refined analysis
  97. Swift Trigger 755873: D50 optical limits
  98. Swift Trigger 755873: a possible GRB
  99. GRB 170604A: Swift detection of a burst
  100. Trigger 755848: Swift spurious trigger on Cen X-3

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