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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"

11784 results found.

  1. SGR 0501+4516: Swift-BAT refined analysis of the 3 discovery events
  2. New Soft Gamma Repeater 0501+4516 was GRB 080822
  3. GRB 080822: Swift detection of a short burst
  4. GRB 080810: Konus-Wind and Swift/BAT joint spectral analysis
  5. GLAST Burst Monitor detection of GRB 080810
  6. GRB 080810: Swift-XRT Team refined analysis
  7. GRB 080810, Swift-BAT refined analysis
  8. GRB 080805: Swift-XRT Refined Analysis
  9. GRB080805 optical limit by "Pi of the Sky"
  10. GRB 080805: Swift detection of a burst
  11. GRB 080804: Swift detection of a burst with optical afterglow
  12. GRB 080804: ROTSE-III Detection of Optical Counterpart
  13. GRB 080802: Swift detection of a probable burst
  14. GRB 080727B: KAIT photometry and an early lightcurve break
  15. Konus-Wind observation of GRB 080727B
  16. GRB 080727A: Swift-XRT refined analysis
  17. GRB 080727B: KAIT observations
  18. GRB 080727B: Swift detection of a bright burst
  19. GRB 080727: Swift detection of a burst
  20. GRB 080726: GRB Localization by SuperAGILE
  21. GRB 080725, Swift-BAT refined analysis
  22. GRB 080723A: optical upper limit
  23. Konus-Wind observation of GRB 080723B
  24. GRB 080723, Swift-BAT refined analysis
  25. GRB 080723B: Detection and Localization by SuperAGILE
  26. GRB 080723B : a long GRB detected with INTEGRAL
  27. GRB 080723: Swift detection of a burst
  28. Konus-Wind observation of GRB 080721
  29. Retraction of Swift Trigger 317393
  30. Trigger 317205: Swift detection of an outburst from XTE J1701-407
  31. Konus-Wind observation of GRB 080714
  32. GRB 080603B: optical observations in CrAO
  33. GRB 080710: Swift-XRT refined analysis
  34. GRB 080710: KAIT OA candidate
  35. GRB 080710: Swift XRT position
  36. GRB 080710: Swift detection of a burst
  37. GRB 080707: Swift XRT refined analysis
  38. GRB 080707: Swift detection of a burst
  39. GRB 080702B Swift-BAT refined analysis
  40. GRB 080702A: MITSuME Akeno optical upper limits
  41. Swift Trigger 315630: Probably not a GRB
  42. GRB 080701A: Early Super-LOTIS Observations
  43. GRB 080701A, Swift-BAT refined analysis
  44. GRB 080625: Gamma Ray Burst Localization by SuperAGILE
  45. GRB 070809: Putative host galaxy and redshift
  46. Konus-Wind observation of GRB 080613B
  47. GRB 080613A: GROND Confirmation of the Afterglow Candidate
  48. GRB 080613 : a long GRB detected with INTEGRAL
  49. GRB 080603b: optical observation
  50. GRB080605: optical observation with the MITSuME-OAO telescope
  51. Konus-Wind observation of GRB 080607
  52. GRB 080607: Swift-XRT refined analysis
  53. Konus-Wind observation of GRB 080605
  54. GRB 080607: Keck/LRIS spectroscopy and redshift
  55. GRB 080605, Swift-BAT refined analysis
  56. GRB 080605, Swift-BAT refined analysis
  57. GRB 080605: MASTER VWF 46 s AT observation
  58. Swift/UVOT observations of GRB080604
  59. Konus-Wind observation of GRB 080603B
  60. GRB 080603B, Swift-BAT refined analysis
  61. GRB 080603A: Swift/UVOT detection of the afterglow
  62. GRB080603B: RTT150 optical observations, break in light curves
  63. GRB 080604: Early Super-LOTIS Observations
  64. GRB080604: confirmation of optical afterglow
  65. GRB 080604: Swift detection of a burst with an optical afterglow
  66. GRB 080516: TAROT La Silla observatory optical observations
  67. GRB 080603B: BOOTES2/TELMA optical observations
  68. GRB 080603: A long GRB detected by INTEGRAL
  69. Konus-Wind observation of GRB 080602
  70. Swift analysis of BAT Slew Survey event (Trigger=009)
  71. Konus-Wind observation of reactivation of SGR 1627-41
  72. GRB 080515: KPNO 4m NIR afterglow detection
  73. GRB 080515: Swift-XRT position and analysis
  74. GRB 080520, GROND observations
  75. GRB 080520: Swift XRT Refined Analysis
  76. GRB 080520: Swift detection of a burst with optical afterglow
  77. Konus-Wind observation of GRB 080514B
  78. GRB 080514B: second epoch Swift XRT data confirms the X-ray afterglow
  79. GRB 080517: Swift detection of a burst
  80. GRB 080516: Swift detection of a burst
  81. Konus-Wind observation of GRB 080513
  82. IPN triangulation of bright GRB 080513
  83. GRB 080514B: KPNO 4m IR observations
  84. GRB 080514B: slow fading behaviour ?
  85. GRB 080514B: Swift-XRT analysis
  86. GRB 080514B: SuperAGILE/IPN GRB Localization
  87. Konus-Wind observation of GRB 080507
  88. GRB 080507: E Pur Si Muove!
  89. GRB 080503: Hubble Space Telescope Imaging
  90. GRB 080506:Optical observations from HCT
  91. GRB 080507: GRB localization by SuperAGILE
  92. GRB 080506, Swift-BAT refined analysis
  93. GRB 080503, Swift-BAT refined analysis
  94. GRB 080430
  95. GRB 080430
  96. GRB 080503: Optical afterglow candidate and LRIS spectroscopy of the short burst
  97. GRB 080503: Swift detection of a short burst
  98. GRB 080430 optical observations
  99. GRB080430: Optical observation in AsU CAS Ondrejov & Brno
  100. GRB 080430: Bootes observation

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