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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"

37707 results found.

  1. LIGO/Virgo G275697: Fermi GBM Upper Limits
  2. LIGO/Virgo G268556, G270580, G274296, and G275404: Konus-Wind observations
  3. GRB 170228B: POLAR Observation
  4. LIGO/Virgo G275404: Fermi GBM Upper Limits
  5. GRB 170228A: AstroSat CZTI detection
  6. GRB 170206B: 15 GHz upper limits from AMI
  7. GRB 170228A: Fermi GBM observation
  8. GRB 170228A: Fermi-LAT detection
  9. LIGO/Virgo G275697: Fermi-LAT search for a high-energy gamma-ray counterpart
  10. LIGO/Virgo G275697: Konus-Wind observations
  11. LIGO/Virgo G275697: Swift/BAT data search
  12. LIGO/VIRGO G275697: Fermi GBM Observations
  13. LIGO/Virgo G275404: Fermi-LAT search for a high-energy gamma-ray counterpart
  14. GRB 170222A: CALET Gamma-Ray Burst Monitor detection
  15. LIGO/Virgo G275404: Swift/BAT data search
  16. LIGO/Virgo G274296: Swift/BAT data search
  17. LIGO/Virgo G275404: Fermi GBM Observations
  18. GRB 170220A: POLAR Observation
  19. Konus-Wind observation of GRB 170222A
  20. GRB 170222A: Swift-XRT observations
  21. GRB 170222A: Fermi GBM observation
  22. LIGO/Virgo G274296: HAWC follow-up
  23. GRB 170222A: Tiled Swift observations
  24. GRB 170222A: Swift ToO observations
  25. IPN Triangulation of GRB 170222A (short/hard)
  26. GRB 170219A: POLAR Observation
  27. Swift Trigger 739517 is probably not a GRB
  28. GRB 170219A: CALET Gamma-Ray Burst Monitor detection
  29. LIGO/Virgo G274296: Fermi-LAT search for a high-energy gamma-ray counterpart
  30. GRB 170219A: Fermi GBM observation
  31. Konus-Wind observation of GRB 170219A (short/hard)
  32. IPN Triangulation of GRB 170219A (short/hard)
  33. LIGO/VIRGO G274296: Fermi GBM Observations
  34. GRB 170214A: Swift-XRT afterglow detection
  35. GRB 170214A: Mondy optical upper limit
  36. GRB 170214A: VLT/X-shooter spectroscopy and tentative redshift
  37. GRB170214A: RATIR Optical and NIR Afterglow Confirmation
  38. GRB 170214A: GROND detection in all bands
  39. GRB 170214A: NOT optical afterglow confirmation
  40. GRB 170214A: Swift/UVOT Upper Limits
  41. GRB170214A: RATIR Optical and NIR Observations
  42. GRB 170209A: GROND confirmation of MASTER afterglow
  43. GRB 170214A: Swift-XRT observations
  44. Konus-Wind observation of GRB 170214A
  45. GRB 170214A: Swift ToO observations
  46. GRB 170214A: Fermi-LAT detection
  47. GRB 170214A: Fermi GBM detection
  48. GRB 170208B: SMARTS optical/IR observations
  49. GRB 170208B: IRSF upper limits
  50. GRB 170208A: IRSF upper limits
  51. GRB 170208A: AstroSat CZTI detection
  52. GRB 170209A: AstroSat CZTI detection
  53. Konus-Wind observation of GRB 170210A
  54. GRB 170203A: 15 GHz upper limits from AMI
  55. GRB 170202A: 15 GHz upper limits from AMI
  56. GRB 170210A: POLAR observation
  57. GRB 170208C: POLAR Observation
  58. IBAS Trigger 7691 is not a GRB
  59. GRB 170209A: Swift-XRT observations
  60. IPN Triangulation of GRB 170210A
  61. GRB 170210A: Fermi GBM observation
  62. Konus-Wind observation of GRB 170209A
  63. GRB 170209A: Swift ToO observations
  64. GRB 170208B: Swift/UVOT Upper Limits
  65. IPN Triangulation of GRB 170209A
  66. GRB 170208B: RATIR Optical and NIR Observations
  67. GRB 170208B: Swift-BAT refined analysis
  68. GRB 170208A: Swift-BAT refined analysis
  69. GRB 170209A: Fermi GBM Detection
  70. Correction to GCN 20640: GRB 170208B: GROND observations
  71. Fermi Trigger 508295323: MASTER-OAFA possible OT detection
  72. GRB 170208A: Swift-XRT refined Analysis
  73. GRB 170208B WHT nIR candidate afterglow
  74. GRB 170208B: Fermi GBM Detection
  75. GRB 170207A: POLAR Observation
  76. GRB 170208A: Swift/UVOT Upper Limits
  77. Konus-Wind observation of GRB 170208B
  78. GRB 170207A: AstroSat CZTI detection
  79. Konus-Wind observation of GRB 170208A
  80. GRB 170208B: GROND observations
  81. GRB 170206C: POLAR Observation
  82. GRB 170208B: NOT upper limits
  83. GRB 170208B: Swift-XRT refined Analysis
  84. GRB 170208B: Etelman observatory optical observations
  85. GRB 170208B: Enhanced Swift-XRT position
  86. GRB 170208A: Enhanced Swift-XRT position
  87. GRB 170208A: Fermi GBM Detection
  88. GRB 170208B: Swift detection of a burst
  89. GRB 170208A: Swift detection of a burst
  90. GRB 170207A: Fermi GBM observation
  91. Konus-Wind observation of GRB 170207A
  92. IPN Triangulation of GRB 170207A (long/very bright)
  93. GRB 170206B: Swift/UVOT Upper Limits
  94. Konus-Wind observation of GRB 170206A
  95. GRB 170206A: POLAR observation
  96. IPN Triangulation of GRB 170206A (short/hard)
  97. GRB 170206B: Swift-BAT refined analysis
  98. GRB 170206B: Swift-XRT refined Analysis
  99. GRB 170206B: Enhanced Swift-XRT position
  100. GRB 170206B: Swift detection of a burst

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