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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"

19317 results found.

  1. GRB080315: Bok Optical Observations
  2. Swift trigger 306323: Swift-BAT/XRT refined analysis
  3. GRB 080310, Swift-BAT refined analysis
  4. GRB080210: optical observations
  5. GRB 080310: Swift-XRT refined analysis
  6. GRB 080310: Swift/UVOT Refined Analysis
  7. GRB 080310 - SDSS Pre-Burst Observations
  8. GRB080310, optical observations with LBT
  9. GRB 080310: Swift detection of a burst with optical afterglow
  10. GRB080307, optical upper limit
  11. GRB080229, optical upper limit
  12. GRB 080307: Swift-XRT Team refined analysis
  13. GRB 080307, Swift-BAT refined analysis
  14. GRB080307 - SDSS Pre-Burst Observations
  15. GRB080307: Optical upper limits
  16. GRB 080307: retraction of UVOT candidate
  17. GRB 080307, Preliminary Swift-BAT refined analysis
  18. GRB 080307: Optical observation with DMC/KANATA
  19. GRB 080307: Swift detection of a burst
  20. GRB 080303, Swift-BAT refined analysis
  21. GRB080303: Swift XRT refined analysis
  22. GRB080229B: Swift XRT afterglow observation
  23. GRB 080303: Swift detection of a burst with optical afterglow
  24. GRB080229: Swift XRT refined analysis
  25. GRB 080229B: Gamma Ray Burst Localization by SuperAGILE
  26. GRB 080229, Swift-BAT refined analysis
  27. Swift-XRT improved positions, and new redshift limits.
  28. ESO optical and NIR observations of GRB 080218B
  29. GRB 080204: Suzaku WAM observation of the prompt emission
  30. GRB 080218B, Swift-BAT refined analysis
  31. GRB 080218B: Swift-XRT refined analysis
  32. GRB 080218A, Swift-BAT refined analysis
  33. GRB 080211: Suzaku WAM observation of the prompt emission
  34. Swift-XRT and UVOT observations of the IPN burst GRB 080211
  35. GRB 080212: REM refined analysis
  36. GRB 080212, Swift-BAT refined analysis
  37. GRB 080212: Swift-XRT Team refined analysis
  38. GRB 080210, Swift-BAT refined analysis
  39. GRB 080210: Swift-XRT Refined Analysis
  40. GRB 080210: GOND detection in all bands and redshift upper limit
  41. GRB 080210: Swift detection of a burst with optical afterglow
  42. GRB 080210: TAROT La Silla observatory optical detection
  43. GRB 080207, Swift-BAT refined analysis
  44. Swift detection of AX J1749.1-2639
  45. GRB 080207, Swift-BAT refined analysis
  46. Swift Trigger 302777 is not a GRB
  47. GRB 080207: Swift-XRT Refined Analysis
  48. GRB 080205, Swift-BAT refined analysis
  49. GRB 080205: Swift XRT refined analysis
  50. Swift-BAT Trigger #302454, correction of GCN notice, update on AX J1749.1-2639
  51. GRB 080130: Swift-BAT refined analysis
  52. GRB 080130: further Swift XRT observations confirm fading source
  53. GRB 080129: Swift-XRT refined analysis
  54. GRB 080123: Early afterglow detection with BATSS (BAT Slew Survey)
  55. GRB 080129, Swift-BAT refined analysis
  56. A new website of high-level data products for Swift GRBs
  57. GRB 080123 : Suzaku WAM observation of the prompt emission
  58. Transient 080109/SN 2008D: Spectroscopic Evolution
  59. Konus-Wind observation of GRB 080122
  60. GRB 080122 : Suzaku WAM observation of the prompt emission
  61. SNe 2008D and 2007uy: Chandra Detections
  62. Transient 080109/SN 2008D: Spectroscopic Evolution and Re-Classification
  63. IPN triangulation of GRB080122
  64. GRB 080123: Swift-XRT refined analysis
  65. GRB 080123, Swift-BAT refined analysis
  66. GRB 080120: Swift-XRT refined analysis
  67. GRB 080120: GROND detection
  68. GRB080120: Swift XRT position
  69. GRB 080120: a long GRB detected by INTEGRAL
  70. Transient in NGC2770 / SN2008D: Metallicity of nearby HII regions
  71. optical observations, XRT in NGC 2770
  72. XRF 080109/SN 2008D: PROMPT Optical Imaging
  73. Swift observations of the X-ray transient in NGC 2770 (aka SN2008D)
  74. XRB 080109/SN 2008D:PAIRITEL NIR observations and t_0 from Swift
  75. XRF 080109 in NGC2770: Detectable Superluminal Motion
  76. Refined Swift-XRT analysis of the transient in NGC 2770
  77. Bright X-ray Transient in NGC 2770 - A low-luminosity XRF?
  78. GRB 071227: Suzaku WAM observation of the prompt emission
  79. Further Swift-BAT analysis of GRB 071227
  80. Konus-Wind observation of GRB 071227
  81. GRB 071227: Magellan redshift confirmation
  82. GRB 071227: Swift-XRT refined analysis
  83. Swift-BAT refined analysis of short GRB 071227
  84. GRB 070429B: Possible UVOT Detection of an Optical Afterglow
  85. GRB 071125: Suzaku WAM observation of the prompt emission
  86. GRB 071129, Swift-BAT refined analysis
  87. GRB 071122, Swift-BAT refined analysis
  88. GRB 071122 Swift-XRT refined analysis
  89. Konus-Wind and Konus-A observations of GRB 071117
  90. GRB071118: Swift XRT refined analysis
  91. GRB 071118, Swift-BAT refined analysis
  92. GRB 071118: Swift detection of a burst
  93. GRB 071117: Swift-XRT refined analysis
  94. GRB 071117, Swift-BAT refined analysis
  95. Swift detection of MXB 0656-072
  96. GRB 071112C MITSuME Akeno early optical observation
  97. GRB 071112C : Second Epoch Lulin R-band observations
  98. GRB 071112C: Swift-BAT refined analysis
  99. GRB 071112C: Swift XRT refined analysis
  100. GRB 071112B, Swift-BAT partial refined analysis of the SHB

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