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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"

21908 results found.

  1. GRB080307 - SDSS Pre-Burst Observations
  2. GRB 080307: TNT optical observation
  3. GRB080307: Optical upper limits
  4. GRB 080307: Gemini-N i-band observations - candidate afterglow
  5. GRB 080307: Enhanced Swift-XRT position
  6. GRB 080307: Optical observation with DMC/KANATA
  7. GRB 080307: Swift detection of a burst
  8. VLA possible radio detection of GRB 080229
  9. GRB 080303: Rapid PROMPT Detections
  10. GRB 080303: Enhanced Swift-XRT position
  11. Swift UVOT observations of GRB080229B
  12. GRB 080303: Swift detection of a burst with optical afterglow
  13. GRB 080303: REM NIR afterglow candidate
  14. GRB 080303A: ROTSE-III Optical Limits
  15. GRB 080229: I-band observations from OSN
  16. GRB 080229: VLT NIR observations
  17. GRB 080229: TNG NIR observations
  18. GRB 080229: Enhanced Swift-XRT position
  19. GRB 080229: REM NIR observations
  20. GRB080229: Possible optical afterglow
  21. UVOT analysis for GRB080229
  22. GRB 080229A: ROTSE-III Optical Limits
  23. GRB 080229: Swift detection of a bright burst
  24. XRF 080109/SN2008D : GMRT upper limit at 1.28 GHz
  25. Swift-XRT improved positions, and new redshift limits.
  26. GRB 080204: Suzaku WAM observation of the prompt emission
  27. Swift/UVOT observations of GRB080218B
  28. GRB 080218B: REM NIR early upper limits
  29. GRB 080218B: Enhanced Swift-XRT position
  30. GRB 080218B: GROND upper limits
  31. GRB 080211: Suzaku WAM observation of the prompt emission
  32. Swift-XRT and UVOT observations of the IPN burst GRB 080211
  33. GRB 080212: VLT optical rapid decay
  34. Konus-Wind observation of GRB 080211
  35. VLA radio upper limit on GRB 080212
  36. Swift/UVOT refined analysis of GRB080212
  37. GRB 080212, Swift-BAT refined analysis
  38. GRB080212: Optical afterglow candidate observed by MITSuME Telescope
  39. GRB 080212: GROND detects afterglow
  40. GRB 080212: REM NIR afterglow?
  41. GRB 080212: Enhanced Swift-XRT position
  42. GRB 080210: Keck photometry
  43. VLA non-detection of GRB 080210
  44. GRB 080212: Swift detection of a burst
  45. IPN localization of GRB 080211
  46. GRB 080207: VLT NIR early upper limits
  47. GRB 080210: Swift/UVOT Refined Analysis
  48. GRB 080210, Swift-BAT refined analysis
  49. GRB 080210: Super-LOTIS observations
  50. GRB 080210: Enhanced Swift-XRT position
  51. GRB 080210: GOND detection in all bands and redshift upper limit
  52. GRB080210 - SDSS Pre-Burst Observations
  53. GRB 080210: Swift detection of a burst with optical afterglow
  54. GRB 080210: TAROT La Silla observatory optical detection
  55. GRB 080207: GROND upper limits
  56. GRB 080205: GAO 150cm telescope Optical limit
  57. GRB 080207: Optical limits from Gemini-South
  58. Swift detection of AX J1749.1-2639
  59. GRB 080207: Super-LOTIS observations
  60. GRB080207: RTT150 Optical Observations
  61. GRB 080207: REM NIR observations
  62. GRB080207: Swift/UVOT refined analysis
  63. GRB 080207: TAROT Calern observatory optical observations
  64. GRB 080207: Enhanced Swift-XRT position
  65. GRB 080207: Swift detection of a burst
  66. Konus-Wind observation of GRB 080204
  67. GRB 080205: optical observation
  68. VLA radio upper limit on GRB 080205
  69. INT+WFC R-band observations of GRB 080205
  70. IPN localization of very hard GRB 080204
  71. GRB 080205: OA evolution from KAIT observations
  72. GRB 080205: Swift/UVOT observations
  73. GRB 080205: Enhanced Swift-XRT position
  74. Swift-BAT Trigger #302454, correction of GCN notice, update on AX J1749.1-2639
  75. GRB 080130: Swift-BAT refined analysis
  76. GRB 080130: further Swift XRT observations confirm fading source
  77. GRB 080129: Swift/UVOT Refined Upper Limits
  78. Swift/UVOT observations of GRB080130
  79. GRB 080130: REM NIR observations
  80. GRB 080130(?): Swift XRT observation
  81. GRB 080129: Swift-XRT refined analysis
  82. GRB 080129: KAIT optical limits
  83. GRB 080123: Early afterglow detection with BATSS (BAT Slew Survey)
  84. GRB 080129: TAROT La Silla observatory optical observations
  85. GRB 080129: GROND detection in all bands, and fading
  86. GRB 080129: GROND detection of the optical/NIR afterglow, and fading
  87. GRB 080129: Enhanced Swift-XRT position
  88. GRB 080129: Gemini-South Imaging Observations
  89. GRB 080129 (?): UVOT Upper Limits
  90. GRB 080121: Upper limit on X-ray afterglow
  91. GRB 080123 : Suzaku WAM observation of the prompt emission
  92. Konus-Wind observation of GRB 080122
  93. GRB 080122 : Suzaku WAM observation of the prompt emission
  94. GRB 080121: Swift/UVOT upper limits
  95. SNe 2008D and 2007uy: Chandra Detections
  96. GRB 080121: Enhanced Swift-XRT position
  97. IPN triangulation of GRB080122
  98. GRB 080121: Nearby SDSS galaxies
  99. GRB 080123: Swift-XRT refined analysis
  100. GRB 080123: Swift/UVOT refined analysis

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