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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"

28303 results found.

  1. GRB 180329B: Swift detection of a burst with an optical afterglow
  2. Swift Trigger 819301: possible GRB 180329A
  3. GRB 180325A: Swift/UVOT Detection
  4. Konus-Wind observation of GRB 180325A
  5. GRB 180325A, Swift-BAT refined analysis
  6. GRB 180325A: GROND observations
  7. GRB 180325A: Global MASTER-Net OT prompt observations
  8. GRB 180325A: TAROT Calern observatory optical observations
  9. GRB 180325A: D50 early optical follow-up
  10. GRB 180325A: Swift-XRT refined Analysis
  11. GRB 180325A: Enhanced Swift-XRT position
  12. GRB 180325A: Optical Photometry with SLKT
  13. GRB 180325A: RATIR Optical Observations
  14. GRB 180325A: prompt REM optical/NIR detection
  15. GRB 180325A: NOT redshift
  16. GRB 180324A, Swift-BAT refined analysis
  17. GRB 180325A: Swift detection of a burst with an optical counterpart
  18. GRB 180324A: Swift/UVOT Upper Limits
  19. GRB 180324A: Swift-XRT refined Analysis
  20. GRB 180324A: Enhanced Swift-XRT position
  21. GRB 180324A: RATIR Optical Observations and Possible Afterglow Detection
  22. GRB 180324A: Swift detection of a burst
  23. IPN Triangulation of GRB 180317A (short/hard)
  24. GRB 180316A: RATIR Optical Observations
  25. GRB 180316A: TSHAO optical observations
  26. GRB 180316A: RATIR Optical Observations, Possible Re-brightening
  27. GRB 180316A: Swift-BAT refined analysis
  28. GRB 180316A: Swift-XRT refined Analysis
  29. GRB 180316A: Swift/UVOT Detection
  30. GRB 180316A: RATIR Optical Observations
  31. GRB 180316A: Enhanced Swift-XRT position
  32. GRB 180316A: LCO Cerro Tololo observations
  33. GROND observations of GRB 180316A
  34. GRB 180316A: Swift detection of a burst
  35. GRB 180314B: RATIR Optical Observations
  36. GRB 180314B: Swift-BAT refined analysis
  37. GRB 180314B: Zeiss-1000/CrAO optical upper limit
  38. GRB 180314B: Swift/UVOT Upper Limits
  39. GRB 180314B: Swift-XRT refined Analysis
  40. GRB 180314B: Enhanced Swift-XRT position
  41. GRB 180313A: Fermi GBM detection
  42. GRB 180314B: Swift detection of a burst
  43. GRB 180314A: Swift-BAT refined analysis
  44. Swift Trigger on MAXI J1820+070
  45. GRB 180314A: TAROT La Silla observatory optical observations
  46. GRB 180314A: LCO Siding Springs observations
  47. GRB 180314A: Swift-XRT refined Analysis
  48. GRB 180314A: Fermi GBM observation
  49. GRB 180314A: Swift/UVOT Detection
  50. GRB 180314A: REM optical/NIR observations
  51. GRB 180314A: MASTER-Net OT dtetction
  52. GRB 180314A: Enhanced Swift-XRT position
  53. GRB180314A: GROND detection of the afterglow
  54. GRB 180314A: Swift detection of a burst with an optical counterpart
  55. GRB 180311A: Swift/UVOT Upper Limits
  56. GRB 180311A, Swift-BAT refined analysis
  57. GRB 180311A: Swift-XRT refined Analysis
  58. MAXI J1820+070: Swift/UVOT counterpart correction
  59. Swift detection of MAXI J1820+070
  60. GRB 180311A: Enhanced Swift-XRT position
  61. GRB 180311A: Swift detection of a burst
  62. GRB 180305A: RATIR Optical Observations
  63. GRB 180305A: Swift/UVOT Upper Limits
  64. GRB 180305A: Mondy optical observations
  65. GRB 180305A: Swift-XRT afterglow detection
  66. GRB 180305A: RATIR Optical Afterglow Candidate
  67. GRB 180305A: Fermi GBM detection
  68. GRB 180305A: Fermi-LAT detection
  69. GRB 180221B: Insight-HXMT/HE observation
  70. GRB 180224A: Swift/UVOT Detection
  71. GRB 180224A: OASDG optical observations
  72. IPN Triangulation of GRB 180223A (long)
  73. GRB 180210A: Insight-HXMT/HE observation
  74. Swift Trigger 811686 is probably not an astrophysical source.
  75. GRB 180224A: AbAO optical observations
  76. GRB 180224A: Swift-BAT refined analysis
  77. GRB 180224A: RATIR Optical Observations
  78. GRB 180224A: Swift-XRT refined Analysis
  79. GRB180224A: Global MASTER-Net bright OT detection
  80. GRB 180224A: Enhanced Swift-XRT position
  81. GRB 180224A: Swift detection of a burst with an optical counterpart
  82. MAXI J1813-095 source: AbAO optical observations
  83. GRB 180222A: Swift/UVOT Upper Limits
  84. GRB 180222A: Swift-XRT refined Analysis
  85. GRB 180222A: Swift-BAT refined analysis
  86. GRB 180222A: Enhanced Swift-XRT position
  87. GRB 180222A: A long GRB detected by INTEGRAL
  88. GRB 180222A: Swift detection of a burst
  89. Swift trigger 811074 (possible GRB 180221A): Swift refined analysis
  90. Swift Trigger 811167: Detection of MAXI J1813-095
  91. GRB 180205A: Mondy optical observations
  92. Swift Trigger 811074: possible GRB 180221A
  93. GRB 180218A: Fermi GBM Detection
  94. IPN Triangulation of GRB 180218A (long/bright)
  95. GRB 180204A: 15 GHz upper limits from AMI
  96. Swift trigger 810300: MASTER-OAFA robotic report
  97. GRB 180205A: SEDM Observations
  98. GRB 180210A: Swift-XRT afterglow detection
  99. GRB 180205A: BAO optical observations
  100. GRB 180210A: Fermi GBM detection

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