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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. GRB 140512A: MASTER optical observations
  2. GRB 140423A: Mondy optical observations
  3. Fermi GBM Trigger 140429551 - Detection of a burst from SGR 1806-20
  4. GRB 140508A: Swift/UVOT Detection
  5. GRB 140509A: Swift/UVOT Detection and photo-z
  6. GRB 140509A: Swift-BAT refined analysis
  7. VHE gamma-ray observations by MAGIC of SWIFT Trigger 596958
  8. GRB 140509A: Swift-XRT refined Analysis
  9. GRB 140509A: Enhanced Swift-XRT position
  10. GRB 140508A: Swift-XRT observations
  11. GRB 140509A: Swift detection of a burst with an optical counterpart
  12. GRB 140508A: iPTF optical transient candidate
  13. IPN triangulation of GRB 140508A
  14. Konus-Wind observation of GRB 140506A
  15. GRB 140502A: ISON-NM early optical limit
  16. GRB 140506A: Fermi GBM Detection
  17. GRB 140506A: Swift/UVOT Detection
  18. GRB 140506A: Swift-BAT refined analysis
  19. GRB 140506A: Swift-XRT refined Analysis
  20. GRB 140506A: Enhanced Swift-XRT position
  21. GRB 140506A: Swift detection of a burst with an optical counterpart
  22. Konus-Wind observation of GRB 140423A
  23. GRB 140430A: iTelescope.Net T16 Optical Observation
  24. GRB 140502A: Swift/UVOT Upper Limits
  25. GRB 140502A: Swift-BAT refined analysis
  26. GRB 140502A: Swift-XRT refined Analysis
  27. GRB 140502A: Enhanced Swift-XRT position
  28. Swift Trigger 597860 is probably not a GRB
  29. GRB 140502A: Fermi GBM observation
  30. GRB 140502A: Swift detection of a burst
  31. GRB 140430A: Swift-BAT refined analysis
  32. GRB 140430A: Swift/UVOT Observations
  33. GRB 140430A: Swift-XRT refined Analysis
  34. GRB 140430A: Enhanced Swift-XRT position
  35. GRB 140430A : Liverpool Telescope optical afterglow observations
  36. GRB 140428A: GROND observations
  37. GRB140430A: Swift detection of a burst with an optical counterpart
  38. GRB 140428A: Swift/UVOT Upper Limits
  39. GRB 140428A: Swift-BAT refined analysis
  40. Trigger 597570: Swift detection of SGR 1806-20
  41. GRB 140428A: Swift-XRT detection of a source
  42. GRB 140428A: Swift Detection of a Possible Burst
  43. GRB 140423A Third epoch pODI photometry
  44. GRB 140423A: Continued RATIR Optical and NIR Observations
  45. GRB 140413A: GROND Afterglow Confirmation
  46. DG CVn: optical observations
  47. GRB 140419A: Continued Mondy optical observations
  48. GRB 140423A pODI/WIYN afterglow photometry
  49. GRB 140423A, Optical Observations
  50. GRB 140423A: Swift-XRT refined Analysis
  51. GRB 140423A: Swift-BAT refined analysis
  52. Swift Trigger 596958 is positionally consistent with V* DG CVn/2XMM J133146.4+291635
  53. Swift Trigger 596958 is probably the flare star: DG CVn
  54. GRB 140423A: Further Observations with Swift/UVOT
  55. GRB 140423A: KAIT Optical Detection
  56. GRB 140423A: Enhanced Swift-XRT position
  57. GRB 140423A: P60 Observations
  58. GRB 140423A: Fermi GBM observation
  59. GRB 140419A, LOAO R-band observations
  60. GRB 140423A: Swift/UVOT detection of a possible counterpart
  61. GRB 140423A: Swift-XRT observations
  62. GRB 140423A: ROTSE-III Detection of Optical Counterpart
  63. GRB 140423A optical observations with pODI/WIYN at KPNO
  64. GRB 140423A: optical afterglow candidate
  65. GRB 140423A: Swift detection of a burst
  66. GRB 140419A: Mondy optical observations
  67. GRB 140419A: KAIT Refined Analysis
  68. Swift Trigger 596641 is not a GRB
  69. Konus-Wind observation of GRB 140419A
  70. GRB 140419A, Optical Observations
  71. GRB 140419A: Swift UVOT refined analysis
  72. GRB 140419A: P60 Observations
  73. GRB 140419A: Swift-XRT refined Analysis
  74. GRB 140419A: Swift-BAT refined analysis
  75. GRB 140419A: Enhanced Swift-XRT position
  76. GRB140419A: UVOT detects fading afterglow in white but not in u filter
  77. GRB 140419A: ROTSE-III Detection of Optical Counterpart
  78. GRB 140419A (Swift trigger 596426) : KAIT optical candidate
  79. GRB 140419A: Swift detection of a burst with optical afterglow
  80. GRB 140414A: Swift/UVOT Upper Limit
  81. GRB 140414A: Swift-XRT observations
  82. GRB 140414A: Swift-BAT refined analysis
  83. GRB 140414A: Short burst found in ground analysis of BAT slew data
  84. GRB 140413A: Swift/UVOT Observations of the Optical Afterglow
  85. GRB 140412A: Swift/UVOT Upper Limits
  86. Konus-Wind observation of GRB 140413A
  87. GRB 140413A: Swift-XRT refined Analysis
  88. GRB 140413A: Swift-BAT refined analysis
  89. GRB 140412A: Swift-XRT refined Analysis
  90. GRB 140412A: Swift-BAT refined analysis
  91. GRB 140413A: TAROT La Silla observatory optical observations
  92. GRB 140413A: Swift-XRT observations
  93. GRB 140412A: Enhanced Swift-XRT position
  94. GRB 140413A: GROND afterglow candidate
  95. Swift Trigger 595616: a possible GRB
  96. GRB 140412A: Swift detection of a burst
  97. GRB 140408A: 1.5m OSN optical upper limit
  98. Swift Trigger 595345 is not an astrophysical source
  99. Swift-BAT trigger 595162 is noise
  100. GRB 140408A: RATIR Optical Upper Limits

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