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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"

39364 results found.

  1. GRB 101219A: ROTSE-III Optical Limits
  2. GRB 101219A: Swift detection of a short hard burst
  3. Request for Supernova related data for GRB 101023A
  4. GRB 101213A : Suzaku WAM observation of the prompt emission
  5. Redshift solution(s) for GRB101213A from Swift-XRT data
  6. Konus-Wind observation of GRB 101213A
  7. GRB 101213A: Fermi GBM observation
  8. GRB 101213A, Swift-BAT refined analysis
  9. GRB 101213A: Swift-XRT refined Analysis
  10. GRB 101213A: Swift/UVOT Upper Limits
  11. GRB 101213A: Enhanced Swift-XRT position
  12. GRB 101213: object within the X-ray error circle
  13. GRB 101213A: Swift detection of a burst
  14. GRB101204A: Swift/UVOT observations
  15. GRB 101204A: Swift-XRT refined Analysis
  16. GRB101204A GROND Detection of the Optical/NIR Afterglow
  17. GRB 101204A Afterglow Candidate, VATT Observations
  18. GRB 101129A : Suzaku WAM observation of the prompt emission
  19. GRB 101204A Swift-XRT/UVOT afterglow candidate
  20. Konus-Wind observation of GRB 101130A
  21. GRB 101204A detected in ground analysis of BAT data
  22. Konus-Wind observation of GRB 101129A
  23. IPN Localization of GRB101130 (possible short duration burst)
  24. GRB 101129A SHB found by IPN and in ground analysis of BAT data
  25. GRB101030A
  26. GRB 101201A: Fermi GBM observation
  27. GRB 101201A: Swift-XRT refined Analysis
  28. GRB 101201A: Swift/UVOT Detection
  29. GRB 101201A: GROND Detection of the Optical/NIR Afterglow
  30. GRB 101201A detected in ground analysis of BAT data
  31. Swift detection of MAXIJ1409-619
  32. GRB 101123A: ROTSE optical observations
  33. GRB 101123A: MASTER prompt optical observations
  34. Konus-Wind observation of GRB 101123A
  35. IPN triangulation of bright GRB 101123A
  36. GRB 101123A: Fermi GBM detection
  37. Optical observation of GRB 101024A
  38. GRB 101117B: GROND Upper limits
  39. GRB 101117B: Swift/UVOT Observations of the Optical Afterglow
  40. GRB 101112A: OSN and BTA observations
  41. GRB 101117B: Swift-XRT refined analysis
  42. GRB101114A: Swift/UVOT Upper Limits
  43. GRB 101114A: Confirmation of the X-ray afterglow
  44. GRB 101117B: Swift-BAT refined analysis
  45. GRB 101117B: Enhanced Swift-XRT position
  46. GRB 101117B: Swift/UVOT Discovery of an Optical Afterglow
  47. GRB 101117B: Swift detection of a burst
  48. GRB 101114A: GROND Upper limits
  49. Konus-Wind observation of GRB 101114A
  50. GRB 101114A: Swift-XRT candidate afterglow detection and analysis
  51. GRB 101114A, Swift-BAT GRB detected by ground processing
  52. Possible detection of INTEGRAL burst GRB 101112A by the EVLA
  53. GRB 101112A: Fermi GBM detection
  54. GRB 101112A: optical observations
  55. GRB 10112A: MASTER optical observations
  56. Konus-Wind observation of GRB 101112A
  57. GRB 101112A - XRT source detection/analysis
  58. GRB 101112A: BOOTES-2/TELMA optical afterglow candidate
  59. GRB101112A: Liverpool Telescope Afterglow Candidate
  60. GRB 101112A: a long GRB detected by INTEGRAL
  61. GRB 100906A: optical observations
  62. GRB 090113, the review of the sky area in plate archives
  63. GRB 101030A : MOA optical observation
  64. GRB 101030A: GROND optical/NIR afterglow candidate
  65. GRB 101030A : Swift XRT refined analysis
  66. GRB 101030A: Swift/UVOT Upper Limits
  67. GRB 101030A: Swift-BAT refined analysis
  68. GRB 101030A: Enhanced Swift-XRT position
  69. GRB 101030A: Swift detection of a burst
  70. GRB 090111, the review of the sky area in plate archives (1976-1996)
  71. Konus-Wind observation of GRB 101023A
  72. GRB 101024A: GROND optical/NIR observations
  73. GRB 101024A: Zadko observatory - Gingin. Optical observations refined analysis
  74. GRB 101024A: Swift XRT refined analysis
  75. GRB 101024A: Zadko observatory - Gingin. Optical observations
  76. GRB 101023A: miniTAO/ANIR NIR detection
  77. GRB 101024A: Fermi GBM observation
  78. GRB 101023A: Fermi GBM observation
  79. GRB101024A: Swift/UVOT
  80. GRB 101024A: Swift-BAT refined analysis
  81. GRB 101024A: GRAS06 optical observations
  82. GRB 101024A: Enhanced Swift-XRT position
  83. Swift/UVOT observations of GRB101023A
  84. GRB 101024A: Swift detection of a burst with an optical afterglow
  85. GGRB 101023A: GROND detection of the optical-NIR afterglow
  86. GRB 101023A: Swift-XRT Team Refined Analysis
  87. GRB 101023A: Swift-BAT refined analysis
  88. GRB 101023A: Gemini discovery of optical afterglow
  89. GRB 101023A: Enhanced Swift-XRT position
  90. GRB 101023A: REM NIR observations
  91. GRB 101023A: Swift detection of a burst
  92. GRB 101011A: miniTAO/ANIR NIR upper limits
  93. GRB 101020A: MASTER prompt and afterglow limit
  94. GRB 101020A: BOOTES2 follow-up and limit
  95. GRB 101020A: MASTER polarization optical observations
  96. GRB 101020A, Swift-BAT refined analysis
  97. GRB 101020A: Swift detection of a burst
  98. GRB 101017A: miniTAO/ANIR NIR upper limits
  99. GRB 101017A: Swift XRT refined analysis
  100. GRB 101017A: Swift/UVOT Observations

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