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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"

37993 results found.

  1. Konus-Wind observation of short hard GRB 101219A
  2. GRB 101219A: Magellan NIR observations
  3. GRB 101219A: Further Gemini-South Imaging
  4. GRB 101219A: Swift-BAT refined analysis
  5. GRB 101219A - NOT observation - upper limit
  6. GRB 101219A: SARA-N Upper Limit
  7. GRB 101219A: Gemini-South observations
  8. GRB 101219A: REM optical and NIR observations
  9. GRB 101219A: ROTSE-III Optical Limits
  10. GRB 101219A: Swift detection of a short hard burst
  11. Request for Supernova related data for GRB 101023A
  12. GRB 101213A : Suzaku WAM observation of the prompt emission
  13. Redshift solution(s) for GRB101213A from Swift-XRT data
  14. Konus-Wind observation of GRB 101213A
  15. GRB 101213A: Fermi GBM observation
  16. GRB 101213A, Swift-BAT refined analysis
  17. GRB 101213A: Swift-XRT refined Analysis
  18. GRB 101213A: Swift/UVOT Upper Limits
  19. GRB 101213A: Enhanced Swift-XRT position
  20. GRB 101213: object within the X-ray error circle
  21. GRB 101213A: Swift detection of a burst
  22. GRB101204A: Swift/UVOT observations
  23. GRB 101204A: Swift-XRT refined Analysis
  24. GRB101204A GROND Detection of the Optical/NIR Afterglow
  25. GRB 101204A Afterglow Candidate, VATT Observations
  26. GRB 101129A : Suzaku WAM observation of the prompt emission
  27. GRB 101204A Swift-XRT/UVOT afterglow candidate
  28. Konus-Wind observation of GRB 101130A
  29. GRB 101204A detected in ground analysis of BAT data
  30. Konus-Wind observation of GRB 101129A
  31. IPN Localization of GRB101130 (possible short duration burst)
  32. GRB 101129A SHB found by IPN and in ground analysis of BAT data
  33. GRB101030A
  34. GRB 101201A: Fermi GBM observation
  35. GRB 101201A: Swift-XRT refined Analysis
  36. GRB 101201A: Swift/UVOT Detection
  37. GRB 101201A: GROND Detection of the Optical/NIR Afterglow
  38. GRB 101201A detected in ground analysis of BAT data
  39. Swift detection of MAXIJ1409-619
  40. GRB 101123A: ROTSE optical observations
  41. GRB 101123A: MASTER prompt optical observations
  42. Konus-Wind observation of GRB 101123A
  43. IPN triangulation of bright GRB 101123A
  44. GRB 101123A: Fermi GBM detection
  45. Optical observation of GRB 101024A
  46. GRB 101117B: GROND Upper limits
  47. GRB 101117B: Swift/UVOT Observations of the Optical Afterglow
  48. GRB 101112A: OSN and BTA observations
  49. GRB 101117B: Swift-XRT refined analysis
  50. GRB101114A: Swift/UVOT Upper Limits
  51. GRB 101114A: Confirmation of the X-ray afterglow
  52. GRB 101117B: Swift-BAT refined analysis
  53. GRB 101117B: Enhanced Swift-XRT position
  54. GRB 101117B: Swift/UVOT Discovery of an Optical Afterglow
  55. GRB 101117B: Swift detection of a burst
  56. GRB 101114A: GROND Upper limits
  57. Konus-Wind observation of GRB 101114A
  58. GRB 101114A: Swift-XRT candidate afterglow detection and analysis
  59. GRB 101114A, Swift-BAT GRB detected by ground processing
  60. Possible detection of INTEGRAL burst GRB 101112A by the EVLA
  61. GRB 101112A: Fermi GBM detection
  62. GRB 101112A: optical observations
  63. GRB 10112A: MASTER optical observations
  64. Konus-Wind observation of GRB 101112A
  65. GRB 101112A - XRT source detection/analysis
  66. GRB 101112A: BOOTES-2/TELMA optical afterglow candidate
  67. GRB101112A: Liverpool Telescope Afterglow Candidate
  68. GRB 101112A: a long GRB detected by INTEGRAL
  69. GRB 100906A: optical observations
  70. GRB 090113, the review of the sky area in plate archives
  71. GRB 101030A : MOA optical observation
  72. GRB 101030A: GROND optical/NIR afterglow candidate
  73. GRB 101030A : Swift XRT refined analysis
  74. GRB 101030A: Swift/UVOT Upper Limits
  75. GRB 101030A: Swift-BAT refined analysis
  76. GRB 101030A: Enhanced Swift-XRT position
  77. GRB 101030A: Swift detection of a burst
  78. GRB 090111, the review of the sky area in plate archives (1976-1996)
  79. Konus-Wind observation of GRB 101023A
  80. GRB 101024A: GROND optical/NIR observations
  81. GRB 101024A: Zadko observatory - Gingin. Optical observations refined analysis
  82. GRB 101024A: Swift XRT refined analysis
  83. GRB 101024A: Zadko observatory - Gingin. Optical observations
  84. GRB 101023A: miniTAO/ANIR NIR detection
  85. GRB 101024A: Fermi GBM observation
  86. GRB 101023A: Fermi GBM observation
  87. GRB101024A: Swift/UVOT
  88. GRB 101024A: Swift-BAT refined analysis
  89. GRB 101024A: GRAS06 optical observations
  90. GRB 101024A: Enhanced Swift-XRT position
  91. Swift/UVOT observations of GRB101023A
  92. GRB 101024A: Swift detection of a burst with an optical afterglow
  93. GGRB 101023A: GROND detection of the optical-NIR afterglow
  94. GRB 101023A: Swift-XRT Team Refined Analysis
  95. GRB 101023A: Swift-BAT refined analysis
  96. GRB 101023A: Gemini discovery of optical afterglow
  97. GRB 101023A: Enhanced Swift-XRT position
  98. GRB 101023A: REM NIR observations
  99. GRB 101023A: Swift detection of a burst
  100. GRB 101011A: miniTAO/ANIR NIR upper limits

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