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GCN Circulars

GCN Circulars are rapid astronomical bulletins submitted by and distributed to community members worldwide. They are used to share discoveries, observations, quantitative near-term predictions, requests for follow-up observations, or future observing plans related to high-energy, multi-messenger, and variable or transient astrophysical events. See the documentation for help with subscribing to or submitting Circulars.

"200205A/SWIFT J0840.7-3516" does not adhere to advanced search syntax. Please refer to the documentation and try again.
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"

19593 results found.

  1. GRB 170531B: Swift/UVOT Detection
  2. GRB 170531B: Swift-BAT refined analysis
  3. GRB 170531A: Swift/UVOT Upper Limits
  4. GRB 170531B: LCO observations
  5. GRB 170531B: Swift-XRT refined Analysis
  6. GRB 170531A: MASTER Net job
  7. GRB 170531A: Swift-XRT refined Analysis
  8. GRB 170531B: MASTER Net optical counterpart refind position and magnitude
  9. GROND observations of GRB 170531B
  10. GRB 170531B: Redshift from GTC/OSIRIS
  11. GRB 170531B: Enhanced Swift-XRT position
  12. GRB 170531A: Swift/UVOT Observations
  13. GRB 170531B: Swift detection of a burst
  14. GRB 170531A: Swift detection of a burst
  15. GRB 170524B: Swift-UVOT/XRT Confirmation of Afterglow
  16. IPN Triangulation of GRB 170529A (long)
  17. GRB 170526A, Swift-BAT refined analysis
  18. GRB 170526A: Swift/UVOT Upper Limits
  19. GRB 170526A: Swift-XRT refined Analysis
  20. GRB 170524A: RATIR Optical and NIR Observations
  21. GRB 170526A: Enhanced Swift-XRT position
  22. GRB 170524B: Swift-XRT observations
  23. GRB 170526A: Swift detection of a burst
  24. Konus-Wind observation of GRB 170524B
  25. GRB 170524B: MASTER-OAFA observations
  26. GRB 170524A: TSHAO and CrAO optical observations
  27. GRB 170524B: Swift ToO observations
  28. GRB 170524A: Swift-BAT refined analysis
  29. GRB 170524B: Swift detection of a burst
  30. GRB 170524A: Swift/UVOT Upper Limits
  31. GRB 170524A: Swift-XRT refined Analysis
  32. IPN Triangulation of GRB 170522A
  33. GRB 170524A: Enhanced Swift-XRT position
  34. GRB 170524A: Swift detection of a burst (or possible new SGR)
  35. GRB 170522A: LCO McDonald observations
  36. GRB 170522A: Swift-XRT observations
  37. GRB 170522A: Tiled Swift observations
  38. GRB 170522A: Fermi-LAT detection
  39. GRB170519A, Swift-UVOT Detection
  40. GRB 170519A: BOOTES-5/JGT early optical detection
  41. GRB 170519A: KAIT Optical Observations
  42. GRB 170519A: Swift-XRT refined Analysis
  43. GRB 170519A: Swift-BAT refined analysis
  44. GRB 170510A: LCO Siding Springs early observations
  45. GRB 170519A: Enhanced Swift-XRT position
  46. GRB 170519A: Swift detection of a burst with an optical counterpart
  47. GRB 170510A: Swift-XRT afterglow detection
  48. GRB 170516A: Swift-BAT refined analysis
  49. GRB 170516A: Swift-XRT refined Analysis
  50. AXP CXOU J164710.2-455216: Fermi GBM observation
  51. GRB 170516A: Swift/UVOT Upper Limits
  52. GRB 170516A: Enhanced Swift-XRT position
  53. GRB 170516A: Swift detection of a burst
  54. Swift Trigger AXP CXOU J164710.2-455216: MASTER-OAFA observations
  55. Swift Trigger on AXP CXOU J164710.2-455216
  56. GRB 170510A: LCO possible counterpart
  57. GRB 170510A: Swift-XRT observations
  58. GRB 170510A: Tiled Swift observations
  59. GRB 170510A: Fermi-LAT detection
  60. Swift Trigger 752193 is not a GRB
  61. Trigger 751928: Swift misidentification of Cen X-3
  62. Swift XRT observations of GRB 170424A
  63. LIGO/Virgo G284239: Swift/BAT data search
  64. GRB 170428A: 15 GHz upper limits from AMI
  65. Swift Trigger 748858: 15 GHz upper limits from AMI
  66. Short GRB 170428A: MASTER-OAFA final reduction of the optical observations
  67. GRB 170428A: TAROT La Silla observatory optical observations
  68. GRB 170428A: Swift/UVOT Upper Limits
  69. GRB 170428A: Swift-XRT refined Analysis
  70. GRB 170428A: Swift-BAT refined analysis
  71. Konus-Wind observation of GRB 170428A
  72. GRB 170428A: MASTER-OAFA early optical observations
  73. Swift Trigger 750337 is probably a noise fluctuation
  74. GRB 170428A: Swift detection of a short burst
  75. Swift trigger 750096 - OT candidate
  76. GRB170426.95 MASTER-Net OT detection
  77. Swift Trigger 750096 is probably a noise fluctuation
  78. Swift Trigger 750044 is probably a noise fluctuation
  79. GRB 170424A: LCO Observations
  80. GRB 170419A: Swift/UVOT Upper Limits
  81. GRB 170424A: Tiled Swift observations
  82. GRB 170424A: Fermi-LAT detection
  83. GRB 170419A: LCO Observations
  84. Swift Trigger 748858: AbAO and TSHAO optical observations
  85. Swift Trigger 748858: TAROT La Silla observatory optical observations
  86. Swift Trigger 748858: RATIR Optical and NIR Observations
  87. GRB 170419B, Swift-BAT refined analysis
  88. GRB 170419B: Zadko observatory - Gingin optical observations
  89. GRB 170419A: Zadko observatory - Gingin optical observations
  90. GRB 170419A: Swift-XRT refined Analysis
  91. GRB 170419B: Fermi GBM observation
  92. GRB 170419A: Swift-BAT refined analysis
  93. Swift trigger 748858: Swift BAT, XRT, and UVOT refined analysis
  94. GRB 170419B: Swift detection of a burst
  95. GRB 170419A: Enhanced Swift-XRT position
  96. Swift Trigger 748858: MASTER-OAFA early optical observations
  97. GRB 170419A: Swift detection of a burst
  98. Swift Trigger 748858: Zadko observatory - Gingin optical observations
  99. Swift Trigger 748858: a possible GRB
  100. GRB 170409A: Fermi-LAT detection

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