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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"

11779 results found.

  1. GRB 080810: Swift-XRT Team refined analysis
  2. GRB 080810, Swift-BAT refined analysis
  3. GRB 080805: Swift-XRT Refined Analysis
  4. GRB080805 optical limit by "Pi of the Sky"
  5. GRB 080805: Swift detection of a burst
  6. GRB 080804: Swift detection of a burst with optical afterglow
  7. GRB 080804: ROTSE-III Detection of Optical Counterpart
  8. GRB 080802: Swift detection of a probable burst
  9. GRB 080727B: KAIT photometry and an early lightcurve break
  10. Konus-Wind observation of GRB 080727B
  11. GRB 080727A: Swift-XRT refined analysis
  12. GRB 080727B: KAIT observations
  13. GRB 080727B: Swift detection of a bright burst
  14. GRB 080727: Swift detection of a burst
  15. GRB 080726: GRB Localization by SuperAGILE
  16. GRB 080725, Swift-BAT refined analysis
  17. GRB 080723A: optical upper limit
  18. Konus-Wind observation of GRB 080723B
  19. GRB 080723, Swift-BAT refined analysis
  20. GRB 080723B: Detection and Localization by SuperAGILE
  21. GRB 080723B : a long GRB detected with INTEGRAL
  22. GRB 080723: Swift detection of a burst
  23. Konus-Wind observation of GRB 080721
  24. Retraction of Swift Trigger 317393
  25. Trigger 317205: Swift detection of an outburst from XTE J1701-407
  26. Konus-Wind observation of GRB 080714
  27. GRB 080603B: optical observations in CrAO
  28. GRB 080710: Swift-XRT refined analysis
  29. GRB 080710: KAIT OA candidate
  30. GRB 080710: Swift XRT position
  31. GRB 080710: Swift detection of a burst
  32. GRB 080707: Swift XRT refined analysis
  33. GRB 080707: Swift detection of a burst
  34. GRB 080702B Swift-BAT refined analysis
  35. GRB 080702A: MITSuME Akeno optical upper limits
  36. Swift Trigger 315630: Probably not a GRB
  37. GRB 080701A: Early Super-LOTIS Observations
  38. GRB 080701A, Swift-BAT refined analysis
  39. GRB 080625: Gamma Ray Burst Localization by SuperAGILE
  40. GRB 070809: Putative host galaxy and redshift
  41. Konus-Wind observation of GRB 080613B
  42. GRB 080613A: GROND Confirmation of the Afterglow Candidate
  43. GRB 080613 : a long GRB detected with INTEGRAL
  44. GRB 080603b: optical observation
  45. GRB080605: optical observation with the MITSuME-OAO telescope
  46. Konus-Wind observation of GRB 080607
  47. GRB 080607: Swift-XRT refined analysis
  48. Konus-Wind observation of GRB 080605
  49. GRB 080607: Keck/LRIS spectroscopy and redshift
  50. GRB 080605, Swift-BAT refined analysis
  51. GRB 080605, Swift-BAT refined analysis
  52. GRB 080605: MASTER VWF 46 s AT observation
  53. Swift/UVOT observations of GRB080604
  54. Konus-Wind observation of GRB 080603B
  55. GRB 080603B, Swift-BAT refined analysis
  56. GRB 080603A: Swift/UVOT detection of the afterglow
  57. GRB080603B: RTT150 optical observations, break in light curves
  58. GRB 080604: Early Super-LOTIS Observations
  59. GRB080604: confirmation of optical afterglow
  60. GRB 080604: Swift detection of a burst with an optical afterglow
  61. GRB 080516: TAROT La Silla observatory optical observations
  62. GRB 080603B: BOOTES2/TELMA optical observations
  63. GRB 080603: A long GRB detected by INTEGRAL
  64. Konus-Wind observation of GRB 080602
  65. Swift analysis of BAT Slew Survey event (Trigger=009)
  66. Konus-Wind observation of reactivation of SGR 1627-41
  67. GRB 080515: KPNO 4m NIR afterglow detection
  68. GRB 080515: Swift-XRT position and analysis
  69. GRB 080520, GROND observations
  70. GRB 080520: Swift XRT Refined Analysis
  71. GRB 080520: Swift detection of a burst with optical afterglow
  72. Konus-Wind observation of GRB 080514B
  73. GRB 080514B: second epoch Swift XRT data confirms the X-ray afterglow
  74. GRB 080517: Swift detection of a burst
  75. GRB 080516: Swift detection of a burst
  76. Konus-Wind observation of GRB 080513
  77. IPN triangulation of bright GRB 080513
  78. GRB 080514B: KPNO 4m IR observations
  79. GRB 080514B: slow fading behaviour ?
  80. GRB 080514B: Swift-XRT analysis
  81. GRB 080514B: SuperAGILE/IPN GRB Localization
  82. Konus-Wind observation of GRB 080507
  83. GRB 080507: E Pur Si Muove!
  84. GRB 080503: Hubble Space Telescope Imaging
  85. GRB 080506:Optical observations from HCT
  86. GRB 080507: GRB localization by SuperAGILE
  87. GRB 080506, Swift-BAT refined analysis
  88. GRB 080503, Swift-BAT refined analysis
  89. GRB 080430
  90. GRB 080430
  91. GRB 080503: Optical afterglow candidate and LRIS spectroscopy of the short burst
  92. GRB 080503: Swift detection of a short burst
  93. GRB 080430 optical observations
  94. GRB080430: Optical observation in AsU CAS Ondrejov & Brno
  95. GRB 080430: Bootes observation
  96. GRB 080430: Swift detection of a burst with optical afterglow
  97. GRB 080320 : Faulkes Telescope North Observations
  98. Swift-BAT trigger 309665 is not a GRB
  99. GRB 080420A: ROTSE-III Optical Limits on a possible short burst
  100. GRB 080413A: Suzaku/WAM and Swift/BAT joint spectral analysis

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