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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"

24583 results found.

  1. GRB 170531B: Swift-BAT refined analysis
  2. GRB 170531B: Swift-XRT refined Analysis
  3. GRB 170531A: MASTER Net job
  4. GRB 170531B: MASTER Net optical counterpart refind position and magnitude
  5. GRB 170531B: MASTER Net OT detection
  6. GRB 170531A: Swift detection of a burst
  7. Konus-Wind observation of GRB 170529A
  8. Konus-Wind observation of GRB 170527A
  9. IPN Triangulation of GRB 170529A (long)
  10. IPN Triangulation of GRB 170527A
  11. GRB 170511A: Fermi GBM observation
  12. LIGO/Virgo G268556: BSA radio observations at 110 MHz
  13. LIGO/Virgo G268556/GW170104: Konus-Wind observations
  14. GRB 170527A: Fermi GBM detection
  15. GRB 170526A, Swift-BAT refined analysis
  16. LIGO/Virgo G268556: VERITAS Very-High-Energy Gamma-Ray Observations
  17. GRB 170524B: Swift-XRT observations
  18. GRB 170526A: Swift detection of a burst
  19. Konus-Wind observation of GRB 170524B
  20. GRB 170524B: MASTER-OAFA observations
  21. GRB 170511A CALET Gamma-Ray Burst Monitor detection
  22. GRB 170524A: Swift-BAT refined analysis
  23. GRB 170524B: Swift detection of a burst
  24. GRB 170524A: D50 optical observation and limit
  25. GRB 170524A: Swift-XRT refined Analysis
  26. GRB 170511A: MAXI/GSC detection
  27. GRB 170524A: Swift detection of a burst (or possible new SGR)
  28. GRB 170522A: Swift-XRT observations
  29. GRB 170522A: Global MASTER-Net job
  30. Konus-Wind observation of GRB 170522B
  31. IPN Triangulation of GRB 170522B (long/intense)
  32. Konus-Wind observation of GRB 170522A
  33. GRB 170522A: Fermi-LAT detection
  34. GRB 170522A: Fermi GBM detection
  35. GRB 170514A CALET Gamma-Ray Burst Monitor detection
  36. GRB 170519A: MITSuME Akeno Optical Observation
  37. GRB 170519A: Watcher optical observations
  38. GRB 170519A: MITSuME Okayama Optical Observation
  39. GRB 170519A: BOOTES-5/JGT early optical detection
  40. LIGO/Virgo G284239: DLT40 follow-up observation
  41. GRB 170519A: KAIT Optical Observations
  42. GRB 170519A: Swift-XRT refined Analysis
  43. GRB 170519A: iTelescope T11 optical observations
  44. GRB 170519A: Swift-BAT refined analysis
  45. GRB 170510A: LCO Siding Springs early observations
  46. GRB 170519A: Swift detection of a burst with an optical counterpart
  47. LIGO/Virgo G277583: UH88/SNIFS classification of ATLAS and PS1 transients
  48. GRB 170516A: Swift-BAT refined analysis
  49. AXP CXOU J164710.2-455216: Fermi GBM observation
  50. Swift Trigger AXP CXOU J164710.2-455216: MASTER-OAFA observations
  51. Swift Trigger on AXP CXOU J164710.2-455216
  52. GRB 170514A: Fermi GBM detection
  53. GRB 170510A: Global MASTER Net possible OT observations
  54. Konus-Wind observation of GRB 170510A
  55. LIGO/Virgo G275404 and G275659: SkyMapper Follow-up Observations
  56. LIGO/Virgo G284239: Konus-Wind observations
  57. GRB 170510A: Swift-XRT observations
  58. GRB 170510A: Fermi GBM observation
  59. GRB 170510A: Fermi-LAT detection
  60. Swift Trigger 752193 is not a GRB
  61. LIGO/Virgo G284239: AstroSat CZTI upper limits
  62. IceCube-170506A - IceCube update on a high-energy neutrino candidate event
  63. Swift XRT observations of GRB 170424A
  64. LIGO/Virgo G284239:SVOM/Mini-GWAC observations of the initial skymap
  65. LIGO/VIRGO G284239: Fermi GBM Upper Limits
  66. LIGO/Virgo G284239: HAWC follow-up
  67. LIGO/Virgo G284239: MASTER automatic follow up and synchronous observations
  68. LIGO/Virgo G284239: Fermi-LAT search for a high-energy gamma-ray counterpart
  69. LIGO/Virgo G284239: TZAC TAROT network observations with TRE/TCA/TCH
  70. GRB 170428A CALET Gamma-Ray Burst Monitor detection
  71. LIGO/Virgo: G284239 ANTARES search
  72. LIGO/Virgo G284239: Swift/BAT data search
  73. LIGO/Virgo G284239: AGILE GRID observations
  74. LIGO/Virgo G284239: INTEGRAL search for a prompt gamma-ray counterpart
  75. LIGO/Virgo G284239: AGILE MCAL Observations
  76. LIGO/Virgo G284239: IceCube neutrino observations
  77. LIGO/Virgo G284239: Identification of a GW Burst Candidate
  78. GRB 170428A: GTC spectroscopic redshift of candidate host galaxy
  79. LIGO/Virgo G268556: Refined localization from CBC parameter estimation
  80. Short GRB 170428A: MASTER-OAFA final reduction of the optical observations
  81. GRB 170428A: GROND detection of the afterglow
  82. GRB 170428A: Swift-BAT refined analysis
  83. Konus-Wind observation of GRB 170428A
  84. GRB 170428A: MASTER-OAFA early optical observations
  85. GRB 170428A: Swift detection of a short burst
  86. GRB170426.95 MASTER-Net OT detection
  87. Swift Trigger 750096 is probably a noise fluctuation
  88. Konus-Wind observation of GRB 170424A
  89. GRB 170424A: Fermi GBM detection
  90. GRB 170424A: Fermi-LAT detection
  91. GRB 170423A: Fermi GBM detection
  92. Swift Trigger 748858: RATIR Optical and NIR Observations
  93. GRB 170419B, Swift-BAT refined analysis
  94. GRB 170419B: Fermi GBM observation
  95. GRB 170419A: Swift-BAT refined analysis
  96. Swift trigger 748858: Swift BAT, XRT, and UVOT refined analysis
  97. GRB 170419B: Swift detection of a burst
  98. Swift Trigger 748858: MASTER-OAFA early optical observations
  99. GRB 170419A: Swift detection of a burst
  100. LIGO/Virgo G275404: DLT40 follow-up observation

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