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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.

Advanced Search Examples (click to copy):

subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

19635 results found.

  1. SWIFT J195509.6+261406 / GRB 070610: SWIFT continued observations
  2. GRB 070612B: Swift/UVOT upper limits
  3. GRB 070612B: FRAM limit
  4. GRB 070612B: KAIT limits
  5. GRB 070612B: Swift XRT position from downlink data
  6. GRB 070610: TAROT Calern observatory optical observations
  7. GRB 070612B: Swift detection of a burst
  8. GRB 070612: Swift detection of a burst
  9. GRB 070610: Swift-XRT refined analysis
  10. GRB 070610: TLS RRM sees flaring behaviour - Galactic transient?
  11. GRB 070611: Swift/UVOT Observations
  12. GRB 070611: Swift-XRT refined analysis
  13. GRB 070611, Swift-BAT refined analysis
  14. GRB 070610: Watcher Observations
  15. GRB 070611: ROTSE-III Detection of Late Rising Optical Counterpart
  16. GRB 070611; Swift-XRT position
  17. GRB 070611: ROTSE-III Optical Limits
  18. GRB 070611: Swift detection of a burst
  19. GRB 070610: Swift-UVOT Upper Limits
  20. GRB 070610: OPTIMA-Burst high-time-resolution optical observations
  21. GRB 070610, Swift-BAT refined analysis
  22. GRB 070610; Swift-XRT position
  23. GRB 070610: Swift detection of a burst
  24. GRB 070412: TAROT Calern observatory optical observations
  25. GRB 070411: TAROT Calern observatory optical observations
  26. Swift/UVOT refined analysis of GRB070531
  27. GRB 070531: Swift-BAT refined analysis
  28. GRB 070531: Swift-XRT position
  29. GRB 070531: Liverpool Telescope Optical Observations
  30. GRB 070531: Swift detection of a burst
  31. Swift/UVOT refined analysis of GRB070529
  32. GRB 070529: MARGE Observations
  33. GRB 070529: Optical aterglow from MIRO
  34. GRB 070529: Swift-XRT refined analysis
  35. GRB 070529, Swift-BAT refined analysis
  36. GRB 070529: Swift detection of a burst with an optical aterglow
  37. GRB 070412: Deep Keck imaging
  38. Swift Triggers 280447, 280450 and 280451 are invalid
  39. Swift trigger 280447 is probably a Galactic transient
  40. GRB 070518: MARGE Observations
  41. GRB 070521: pseudo-z ~ 2.28 from prompt emission spectrum
  42. Konus-Wind observation of GRB 070521
  43. GRB 070521: Swift/UVOT Upper Limits
  44. GRB 070521: Swift-XRT refined analysis
  45. GROND upper limits of GRB 070521
  46. GRB 070521 Milagro GeV/TeV Observations
  47. GRB 070520B: Swift/UVOT Upper Limits
  48. GRB 070521, Swift-BAT refined analysis
  49. GRB 070520A: Swift UVOT Upper Limits
  50. GRB 070520B: Swift-XRT refined analysis
  51. GRB 070521: TAROT La Silla observatory optical observations
  52. GRB070521 - SDSS Pre-Burst Observations
  53. GRB 070521: Swift detection of a burst
  54. GRB 070520B, Swift-BAT refined analysis
  55. GRB 070520A, Swift-BAT refined analysis
  56. GRB 070520A: Swift-XRT refined analysis
  57. GRB 070520B: Swift detection of a burst
  58. GRB 070520: Swift detection of a burst
  59. VLA observation of GRB 070518
  60. GRB 070518: Swift-XRT refined analysis
  61. GRB070518: UVOT refined analysis
  62. GRB 070518, Swift-BAT refined analysis
  63. GRB 070518: Swift detection of a burst with optical afterglow
  64. GRB070517: Swift-XRT Refined Analysis
  65. GRB 070517, Swift-BAT refined analysis
  66. GRB 070517: Swift detection of a burst
  67. GRB 070509: objects inside XRT error circle
  68. GRB 070512: IPN localization and Konus spectrum of a bright burst
  69. GRB 070508: pseudo-z from 4 different spectral analyses
  70. GRB 070509: Swift/UVOT Upper Limits
  71. Konus-Wind and Konus-A observation of GRB 070508
  72. Swift-BAT trigger 278987 is not a GRB
  73. GRB 070510: Swift detection of a possible burst
  74. GRB070509: Swift-XRT Refined Analysis
  75. GRB 070509, Swift-BAT refined analysis
  76. GRB 070508: Suzaku/WAM observation of the prompt emission
  77. GRB 070509: REM observations
  78. GRB 070509: Swift detection of a burst
  79. GRB 070509: ROTSE-III Optical Limits
  80. GRB070508: Swift/UVOT Observations
  81. GRB 070508, Swift-BAT refined analysis
  82. GRB 070508: Swift-XRT refined analysis
  83. GRB 070508: TAROT La Silla observatory optical observations
  84. GRB 070508: Swift detection of an intense burst with an optical counterpart
  85. GRB070412: MAGIC telescope GeV observation
  86. Swift-BAT trigger 278809 is not a GRB
  87. GRB 070507: Swift detection of a possible cosmic ray shower event or a possible burst
  88. GRB070506: Swift/UVOT Observations
  89. GRB070506: Swift XRT refined analysis
  90. GRB 070506, Swift-BAT Refined Analysis
  91. GRB 070506: Swift detection of a burst with optical afterglow
  92. GRB 070429A: Swift XRT further analysis
  93. GRB 070309: Swift-XRT afterglow confirmation
  94. VLA observation of GRB 070429B
  95. Swift/UVOT observations of GRB070429B
  96. GRB 070429B, Swift-BAT refined analysis
  97. Swift/UVOT observations of GRB070429A
  98. GRB 070429A: Swift XRT refined analysis
  99. GRB 070429A, Swift-BAT refined analysis
  100. GRB 070429B: Swift XRT refined analysis

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