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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"

19662 results found.

  1. Konus-Wind observation of GRB 150424A
  2. GRB 150424A: Swift/UVOT Observations
  3. GRB 150424A: Enhanced Swift-XRT position
  4. GRB 150424B: Tiled Swift observations
  5. GRB 150424A: Swift detection of a short burst
  6. GRB 150423A: UKIRT NIR observations
  7. GRB 150423A: Swift-BAT refined analysis
  8. GRB 150423A: Swift/UVOT Upper Limits
  9. GRB 150423A: VLT detection
  10. GRB 150423A: Swift-XRT refined Analysis
  11. GRB 150423A: RATIR optical afterglow monitoring
  12. GRB 150423A: Enhanced Swift-XRT position
  13. GRB 150423A: GROND afterglow candidate
  14. GRB 150413A: Konus-Wind and Swift/BAT joint spectral analysis
  15. GRB 150423A: KAIT Optical Upper Limit
  16. GRB 150423A: GROND observation
  17. GRB 150423A: Swift detection of a short burst
  18. GRB150418A: Swift/UVOT did not detect a new source
  19. Further Swift XRT observations of GRB 150418A
  20. Swift trigger 638589 is probably not an astrophysical source
  21. GRB 150413A: Swift-XRT observations
  22. GRB 150418A: Swift-XRT observations
  23. GRB 150418A: Tiled Swift observations
  24. Confirmation that Swift trigger 638217 is not an astrophysical source
  25. LOAO B, R Observations of GRB150413A
  26. Swift Trigger 638217 is probably not an astrophysical source
  27. GRB 150413A: Bassano Bresciano Observatory optical observations
  28. Konus-Wind observation of a bright burst from SGR 1935+2154
  29. GRB 150413A: Swift-BAT refined analysis
  30. GRB 150413A: redshift determination with the 2.2m CAHA
  31. GRB 150413A: Khureltogot optical observations
  32. GRB 150413A: Swift detection of a burst
  33. Swift trigger 637807 is probably not an astrophysical source
  34. Swift detection of SAX J1808.4-3658
  35. Swift GRB150402A: further XRT observations
  36. GRB 150407A: Swift-XRT observations
  37. GRB 150407A: Swift detection of a possible burst
  38. GRB 150407A: Swift ToO observations
  39. GRB 150403A: MASTER-net optical observation
  40. Swift triggered on a source in Terzan 5 (trigger=637212)
  41. Konus-Wind observation of GRB 150403A
  42. GRB 150403A: Swift-BAT refined analysis
  43. GRB 150403A: Fermi GBM Detection
  44. GRB 150403A: Swift/UVOT Detection
  45. GRB 150323C: additional optical observations in Mondy
  46. GRB 150323C: Khureltogot optical observations
  47. GRB 150403A: Swift-XRT refined Analysis
  48. GRB 150403A: Fermi-LAT detection
  49. GRB 150403A: Enhanced Swift-XRT position
  50. GRB 150403A: Swift detection of a burst with an optical counterpart
  51. GRB 150402A: results of Swift observations
  52. GRB 150402A: RATIR Optical Observations
  53. GRB 150402A: Swift ToO observations
  54. GRB 150402A detected in ground analysis of Swift-BAT data
  55. IPN Triangulation of GRB 150330A (long/very intense)
  56. GRB 150323B: Swift-XRT afterglow detection
  57. GRB 150323A: AAO optical observations
  58. Konus-Wind observation of GRB 150323B
  59. Konus-Wind observation of GRB 150323A
  60. GRB 150323C: Mondy optical observations
  61. GRB 150323B : Xinglong TNT upper limit
  62. GRB 150323C, Swift-BAT refined analysis
  63. GRB 150323C: Swift/UVOT Upper Limits
  64. GRB 150323B: Swift-XRT observations
  65. GRB 150323C: Enhanced Swift-XRT position
  66. GRB 150323C: RATIR Optical Afterglow Observations
  67. GRB 150323C : Xinglong TNT optical observation
  68. GRB 150323C: Swift-XRT refined Analysis
  69. GRB 150323C: Xingming upper limit
  70. GRB 150323A, Swift-BAT refined analysis
  71. GRB150323C: Fermi GBM detection
  72. GRB 150323A: KAIT Optical Observations
  73. GRB 150323C: Nanshan optical afterglow detection
  74. GRB 150323C: Prompt enhanced Swift-XRT position
  75. GRB 150323B: Fermi GBM observation
  76. GRB 150323C: MASTER-net optical observation
  77. GRB 150323C: Swift detection of a burst
  78. GRB 150323B: Swift ToO observations
  79. GRB 150323B detected in ground analysis of Swift-BAT data
  80. GRB 150323A: Swift-XRT refined Analysis
  81. GRB150323A: Swift-UVOT detection of the afterglow
  82. GRB 150323A: Enhanced Swift-XRT position
  83. GRB 150323A: RATIR Optical Afterglow Observations
  84. GRB 150323A: P60 Optical Afterglow Candidate
  85. GRB 150323A: Swift detection of a burst
  86. Swift Triggers 635788-635794 are probably not real.
  87. GRB 150318A: Swift-XRT refined Analysis
  88. Confirmation that Swift trigger 635306 is not an astrophysical source
  89. GRB 150318A: Skynet PROMPT-CTIO Observations
  90. GRB 150318A: Swift-BAT refined analysis
  91. GRB 150318A: Swift/UVOT Upper Limits
  92. GRB 150318A : GROND upper limits
  93. Swift Trigger 635306 is probably not an astrophysical source
  94. GRB 150318A: Enhanced Swift-XRT position
  95. GRB 150318A: Swift detection of a burst
  96. GRB 150317A: Swift/UVOT Upper Limits
  97. GRB 150317A: Swift-XRT refined Analysis
  98. GRB 150317A: Swift-BAT refined analysis
  99. GRB 150317A: RATIR Optical Afterglow Detection
  100. GRB 150317A: Enhanced Swift-XRT position

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