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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"

19316 results found.

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

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