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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"

24582 results found.

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

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