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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"

12190 results found.

  1. GRB 170607A: Swift-XRT refined Analysis
  2. GRB 170519A: TShAO and AbAO optical observations
  3. GRB 170519A: Mondy optical observations
  4. Swift Trigger 755873: MASTER Net optical observations
  5. GRB 170604A: Swift-XRT refined Analysis
  6. GRB 170604A: Swift-BAT refined analysis
  7. GRB 170531A: MASTER Net job
  8. GRB 170531A: Swift detection of a burst
  9. Konus-Wind observation of GRB 170529A
  10. Konus-Wind observation of GRB 170527A
  11. LIGO/Virgo G268556: optical observations and classification of Pan-STARRS1 transients
  12. GRB 170526A: Swift-XRT refined Analysis
  13. LIGO/Virgo G268556: VERITAS Very-High-Energy Gamma-Ray Observations
  14. GRB 170526A: Swift detection of a burst
  15. Konus-Wind observation of GRB 170524B
  16. GRB 170524B: MASTER-OAFA observations
  17. GRB 170524A: TSHAO and CrAO optical observations
  18. GRB 170524A: D50 optical observation and limit
  19. GRB 170511A: MAXI/GSC detection
  20. GRB 170524A: Swift detection of a burst (or possible new SGR)
  21. Konus-Wind observation of GRB 170522B
  22. IPN Triangulation of GRB 170522B (long/intense)
  23. Konus-Wind observation of GRB 170522A
  24. GRB 170522A: Fermi-LAT detection
  25. LIGO/Virgo G284239: DLT40 follow-up observation
  26. GRB 170519A: KAIT Optical Observations
  27. GRB 170519A: Swift-XRT refined Analysis
  28. LIGO/Virgo G277583: UH88/SNIFS classification of ATLAS and PS1 transients
  29. GRB 170510A: Swift-XRT afterglow detection
  30. GRB 170516A: Swift-BAT refined analysis
  31. GRB 170516A: Swift-XRT refined Analysis
  32. GRB 170516A: Swift detection of a burst
  33. Konus-Wind observation of GRB 170510A
  34. LIGO/Virgo G275404 and G275659: SkyMapper Follow-up Observations
  35. LIGO/Virgo G284239: H.E.S.S. very-high energy gamma-ray follow-up
  36. LIGO/Virgo G284239: MAXI/GSC observations
  37. GRB 170510A: Fermi-LAT detection
  38. LIGO/Virgo G284239:SVOM/Mini-GWAC observations of the initial skymap
  39. LIGO/Virgo G284239: MASTER automatic follow up and synchronous observations
  40. LIGO/Virgo G284239: Fermi-LAT search for a high-energy gamma-ray counterpart
  41. LIGO/Virgo G284239: TZAC TAROT network observations with TRE/TCA/TCH
  42. LIGO/Virgo G284239: AGILE GRID observations
  43. Short GRB 170428A: MASTER-OAFA final reduction of the optical observations
  44. Konus-Wind observation of GRB 170428A
  45. Konus-Wind observation of GRB 170424A
  46. GRB 170424A: Fermi-LAT detection
  47. Fermi GBM trigger 514379207/170420463 is not a GRB
  48. GRB 170419A: Swift-XRT refined Analysis
  49. GRB 170419A: Swift detection of a burst
  50. LIGO/Virgo G275404: DLT40 follow-up observation
  51. LIGO/Virgo G277583: DLT40 follow-up observation
  52. Konus-Wind observation of GRB 170409A
  53. GRB 170409A: Fermi GBM Observation
  54. GRB 170409A: Fermi-LAT detection
  55. GRB170405A, Swift-UVOT Detection
  56. GRB 170405A: Swift-XRT refined Analysis
  57. Konus-Wind observation of GRB 170405A
  58. GRB 170405A: ISON/Terskol optical observations
  59. GRB 170405A: Watcher optical detection
  60. GRB 170405A: Fermi-LAT detection
  61. GRB 170330A CALET Gamma-Ray Burst Monitor detection
  62. GRB 170325A: optical observations, possible OT/host detection
  63. Konus-Wind observation of GRB 170403A (short/hard)
  64. Konus-Wind observation of GRB 170330A
  65. Fermi-LAT Gamma-ray Observations of IceCube-170321
  66. IceCube-170321A: Swift-XRT observations
  67. GRB 170331A: Swift-XRT refined Analysis
  68. LIGO/Virgo G275697: LOFAR follow-up
  69. Konus-Wind observation of GRB 170329A
  70. GRB 170331A: Swift detection of a burst
  71. GRB 170329A: Fermi-LAT detection
  72. INTEGRAL pointed follow-up of IceCube-170321A
  73. Konus-Wind observation of GRB 170320A
  74. LIGO/Virgo G277583: INTEGRAL search for an X-ray and gamma-ray counterpart
  75. GRB 170318A: KAIT Optical Upper Limit
  76. GRB 170318B: Swift-BAT refined analysis
  77. GRB 170318A: Swift-BAT refined analysis
  78. GRB 170318A: Prompt enhanced Swift-XRT position
  79. IceCube-170312A: MASTER follow-up observations
  80. LIGO/Virgo G277583 : MAXI/GSC observations
  81. GRB 170317A: Mondy optical observations
  82. GRB 170317A: ISON-Ussuriysk aferglow confirmation
  83. LIGO/Virgo G277583: ATLAS coverage and transients over the first 2 days
  84. LIGO/Virgo G275697: DLT40 follow-up observation
  85. LIGO/Virgo G274296: DLT40 follow-up observation
  86. LIGO/Virgo G275697: Fermi-LAT search for a high-energy gamma-ray counterpart
  87. LIGO/Virgo G277583: ERRATUM LV GCN 20871: TAROT Calern (TCA) observations
  88. LIGO/Virgo G277583: TAROT Calern (TCA) observations
  89. LIGO/Virgo G277583: SVOM/Mini-GWAC observations of the initial skymap
  90. Konus-Wind observation of GRB 170311B
  91. GRB 170309A: POLAR Observation
  92. GRB170306A: SALT observations
  93. LIGO/Virgo G275404: Swift-XRT observations of sources in the AGILE error region
  94. GRB 170305A: POLAR observation
  95. GRB 170307A: Fermi GBM observation
  96. Swift Trigger 741528: a possible GRB
  97. Konus-Wind observation of GRB 170306B
  98. GRB 170306A, Swift-BAT refined analysis
  99. GRB 170306B: Fermi-LAT detection
  100. GRB 170306A: GROND observations

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