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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"

45720 results found.

  1. GRB 101204A: Swift-XRT refined Analysis
  2. GRB101204A GROND Detection of the Optical/NIR Afterglow
  3. GRB 101204A Afterglow Candidate, VATT Observations
  4. GRB 101129A : Suzaku WAM observation of the prompt emission
  5. GRB 101204A Swift-XRT/UVOT afterglow candidate
  6. Konus-Wind observation of GRB 101130A
  7. GRB 101204A detected in ground analysis of BAT data
  8. Konus-Wind observation of GRB 101129A
  9. IPN Localization of GRB101130 (possible short duration burst)
  10. GRB 101129A SHB found by IPN and in ground analysis of BAT data
  11. GRB101030A
  12. GRB 101201A: Fermi GBM observation
  13. GRB 101201A: Swift-XRT refined Analysis
  14. GRB 101201A: Swift/UVOT Detection
  15. GRB 101201A: GROND Detection of the Optical/NIR Afterglow
  16. GRB 101201A detected in ground analysis of BAT data
  17. Swift detection of MAXIJ1409-619
  18. GRB 101123A: ROTSE optical observations
  19. GRB 101123A: MASTER prompt optical observations
  20. Konus-Wind observation of GRB 101123A
  21. IPN triangulation of bright GRB 101123A
  22. GRB 101123A: Fermi GBM detection
  23. Optical observation of GRB 101024A
  24. GRB 101117B: GROND Upper limits
  25. GRB 101117B: Swift/UVOT Observations of the Optical Afterglow
  26. GRB 101112A: OSN and BTA observations
  27. XRF 101117A: Palomar Transient Factory Observations
  28. GRB 101117B: Swift-XRT refined analysis
  29. GRB101114A: Swift/UVOT Upper Limits
  30. GRB 101114A: Confirmation of the X-ray afterglow
  31. GRB 101117B: Swift-BAT refined analysis
  32. GRB 101117B: Enhanced Swift-XRT position
  33. GRB 101117B: Swift/UVOT Discovery of an Optical Afterglow
  34. GRB 101117B: Swift detection of a burst
  35. XRF101117A: MAXI/GSC detection of a short X-ray transient
  36. GRB 101114A: GROND Upper limits
  37. Konus-Wind observation of GRB 101114A
  38. Fermi GBM detection of a burst from a galactic source
  39. GRB 101114A: Swift-XRT candidate afterglow detection and analysis
  40. GRB 101114A, Swift-BAT GRB detected by ground processing
  41. Possible detection of INTEGRAL burst GRB 101112A by the EVLA
  42. GRB 101112A: Fermi GBM detection
  43. GRB 101112A: optical observations
  44. GRB 10112A: MASTER optical observations
  45. Konus-Wind observation of GRB 101112A
  46. GRB 101112A - XRT source detection/analysis
  47. GRB 101112A: BOOTES-2/TELMA optical afterglow candidate
  48. GRB101112A: Liverpool Telescope Afterglow Candidate
  49. GRB 101112A: a long GRB detected by INTEGRAL
  50. GRB 100906A: optical observations
  51. GRB 090113, the review of the sky area in plate archives
  52. GRB 101030A : MOA optical observation
  53. GRB 101030A: GROND optical/NIR afterglow candidate
  54. GRB 101030A : Swift XRT refined analysis
  55. GRB 101030A: Swift/UVOT Upper Limits
  56. GRB 101030A: Swift-BAT refined analysis
  57. GRB 101030A: Enhanced Swift-XRT position
  58. GRB 101030A: Swift detection of a burst
  59. GRB 090111, the review of the sky area in plate archives (1976-1996)
  60. Konus-Wind observation of GRB 101023A
  61. GRB 101024A: GROND optical/NIR observations
  62. GRB 101024A: Zadko observatory - Gingin. Optical observations refined analysis
  63. GRB 101024A: Swift XRT refined analysis
  64. GRB 101024A: Zadko observatory - Gingin. Optical observations
  65. GRB 101023A: miniTAO/ANIR NIR detection
  66. GRB 101024A: Fermi GBM observation
  67. GRB 101023A: Fermi GBM observation
  68. GRB101024A: Swift/UVOT
  69. GRB 101024A: Swift-BAT refined analysis
  70. GRB 101024A: GRAS06 optical observations
  71. GRB 101024A: Enhanced Swift-XRT position
  72. Swift/UVOT observations of GRB101023A
  73. GRB 101024A: Swift detection of a burst with an optical afterglow
  74. GGRB 101023A: GROND detection of the optical-NIR afterglow
  75. GRB 101023A: Swift-XRT Team Refined Analysis
  76. GRB 101023A: Swift-BAT refined analysis
  77. GRB 101023A: Gemini discovery of optical afterglow
  78. GRB 101023A: Enhanced Swift-XRT position
  79. GRB 101023A: REM NIR observations
  80. GRB 101023A: Swift detection of a burst
  81. GRB 101011A: miniTAO/ANIR NIR upper limits
  82. GRB 101020A: MASTER prompt and afterglow limit
  83. GRB 101020A: BOOTES2 follow-up and limit
  84. GRB 101020A: MASTER polarization optical observations
  85. GRB 101020A, Swift-BAT refined analysis
  86. GRB 101020A: Swift detection of a burst
  87. GRB 101017A: miniTAO/ANIR NIR upper limits
  88. GRB 101017A: Swift XRT refined analysis
  89. GRB 101017A: Swift/UVOT Observations
  90. GRB 101008A: correction to the GCN 11352
  91. GRB 101008A: optical observations
  92. GRB101017A: MITSuME Okayama optical upper limits
  93. Konus-Wind observation of GRB 101017A
  94. GRB 101014A: Fermi LAT detection
  95. GRB 101017A: Enhanced Swift-XRT position
  96. GRB 101017A: Swift-BAT refined analysis
  97. GRB 101017A: ROTSE-III Optical Limits
  98. GRB 101017A: Swift detection of a burst with optical counterpart
  99. GRB 101011A: Fermi GBM detection
  100. GRB 101011A: BOOTES-3 Upper Limit

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