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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"

37700 results found.

  1. GRB 101123A: MASTER prompt optical observations
  2. Konus-Wind observation of GRB 101123A
  3. IPN triangulation of bright GRB 101123A
  4. GRB 101123A: Fermi GBM detection
  5. Optical observation of GRB 101024A
  6. GRB 101117B: GROND Upper limits
  7. GRB 101117B: Swift/UVOT Observations of the Optical Afterglow
  8. GRB 101112A: OSN and BTA observations
  9. GRB 101117B: Swift-XRT refined analysis
  10. GRB101114A: Swift/UVOT Upper Limits
  11. GRB 101114A: Confirmation of the X-ray afterglow
  12. GRB 101117B: Swift-BAT refined analysis
  13. GRB 101117B: Enhanced Swift-XRT position
  14. GRB 101117B: Swift/UVOT Discovery of an Optical Afterglow
  15. GRB 101117B: Swift detection of a burst
  16. GRB 101114A: GROND Upper limits
  17. Konus-Wind observation of GRB 101114A
  18. Fermi GBM detection of a burst from a galactic source
  19. GRB 101114A: Swift-XRT candidate afterglow detection and analysis
  20. GRB 101114A, Swift-BAT GRB detected by ground processing
  21. Possible detection of INTEGRAL burst GRB 101112A by the EVLA
  22. GRB 101112A: Fermi GBM detection
  23. GRB 101112A: optical observations
  24. GRB 10112A: MASTER optical observations
  25. Konus-Wind observation of GRB 101112A
  26. GRB 101112A - XRT source detection/analysis
  27. GRB 101112A: BOOTES-2/TELMA optical afterglow candidate
  28. GRB101112A: Liverpool Telescope Afterglow Candidate
  29. GRB 101112A: a long GRB detected by INTEGRAL
  30. GRB 100906A: optical observations
  31. GRB 090113, the review of the sky area in plate archives
  32. GRB 101030A : MOA optical observation
  33. GRB 101030A: GROND optical/NIR afterglow candidate
  34. GRB 101030A : Swift XRT refined analysis
  35. GRB 101030A: Swift/UVOT Upper Limits
  36. GRB 101030A: Swift-BAT refined analysis
  37. GRB 101030A: Enhanced Swift-XRT position
  38. GRB 101030A: Swift detection of a burst
  39. GRB 090111, the review of the sky area in plate archives (1976-1996)
  40. Konus-Wind observation of GRB 101023A
  41. GRB 101024A: GROND optical/NIR observations
  42. GRB 101024A: Zadko observatory - Gingin. Optical observations refined analysis
  43. GRB 101024A: Swift XRT refined analysis
  44. GRB 101024A: Zadko observatory - Gingin. Optical observations
  45. GRB 101023A: miniTAO/ANIR NIR detection
  46. GRB 101024A: Fermi GBM observation
  47. GRB 101023A: Fermi GBM observation
  48. GRB101024A: Swift/UVOT
  49. GRB 101024A: Swift-BAT refined analysis
  50. GRB 101024A: GRAS06 optical observations
  51. GRB 101024A: Enhanced Swift-XRT position
  52. Swift/UVOT observations of GRB101023A
  53. GRB 101024A: Swift detection of a burst with an optical afterglow
  54. GGRB 101023A: GROND detection of the optical-NIR afterglow
  55. GRB 101023A: Swift-XRT Team Refined Analysis
  56. GRB 101023A: Swift-BAT refined analysis
  57. GRB 101023A: Gemini discovery of optical afterglow
  58. GRB 101023A: Enhanced Swift-XRT position
  59. GRB 101023A: REM NIR observations
  60. GRB 101023A: Swift detection of a burst
  61. GRB 101011A: miniTAO/ANIR NIR upper limits
  62. GRB 101020A: MASTER prompt and afterglow limit
  63. GRB 101020A: BOOTES2 follow-up and limit
  64. GRB 101020A: MASTER polarization optical observations
  65. GRB 101020A, Swift-BAT refined analysis
  66. GRB 101020A: Swift detection of a burst
  67. GRB 101017A: miniTAO/ANIR NIR upper limits
  68. GRB 101017A: Swift XRT refined analysis
  69. GRB 101017A: Swift/UVOT Observations
  70. GRB 101008A: correction to the GCN 11352
  71. GRB 101008A: optical observations
  72. GRB101017A: MITSuME Okayama optical upper limits
  73. Konus-Wind observation of GRB 101017A
  74. GRB 101014A: Fermi LAT detection
  75. GRB 101017A: Enhanced Swift-XRT position
  76. GRB 101017A: Swift-BAT refined analysis
  77. GRB 101017A: ROTSE-III Optical Limits
  78. GRB 101017A: Swift detection of a burst with optical counterpart
  79. GRB 101011A: Fermi GBM detection
  80. GRB 101011A: BOOTES-3 Upper Limit
  81. Konus-Wind observation of GRB 101014A
  82. GRB 101014A: Fermi GBM detection
  83. GRB 100906A: D50 optical detection
  84. GRB 100902A: D50 optical limit
  85. GRB 101011A: Swift/UVOT observations
  86. GRB 101011A, GROND upper limits
  87. GRB 101011A: Zadko observatory - Gingin optical observations
  88. GRB 101011A: XRT Refined Analysis
  89. GRB 101011A: Swift/UVOT Observations of a Possible Optical Afterglow
  90. GRB 101011A: Enhanced Swift-XRT position
  91. GRB 101011A: Swift-BAT refined analysis
  92. GRB 101011A: Swift detection of a burst
  93. GRB 101008A: Fermi GBM observation
  94. GRB 101008A: MASTER prompt optical observations (correction to GCN#11328)
  95. GRB 101008A: MASTER prompt optical observations
  96. GRB 101008A: Swift-BAT refined analysis
  97. GRB101008A, GROND detection of a fading afterglow
  98. GRB 101008A: Swift-XRT refined analysis
  99. GRB 101008A: SAO RAS optical observations
  100. GRB 100915 optical upper limit

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