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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"

11836 results found.

  1. GRB 090113, the review of the sky area in plate archives
  2. GRB 101030A: GROND optical/NIR afterglow candidate
  3. GRB 101030A : Swift XRT refined analysis
  4. GRB 101030A: Swift detection of a burst
  5. GRB 090111, the review of the sky area in plate archives (1976-1996)
  6. Konus-Wind observation of GRB 101023A
  7. GRB 101024A: Swift XRT refined analysis
  8. GRB 101024A: Swift detection of a burst with an optical afterglow
  9. GGRB 101023A: GROND detection of the optical-NIR afterglow
  10. GRB 101023A: Swift-XRT Team Refined Analysis
  11. GRB 101011A: miniTAO/ANIR NIR upper limits
  12. GRB 101020A: MASTER prompt and afterglow limit
  13. GRB 101020A: MASTER polarization optical observations
  14. GRB 101017A: Swift XRT refined analysis
  15. GRB 101008A: optical observations
  16. Konus-Wind observation of GRB 101017A
  17. GRB 101014A: Fermi LAT detection
  18. GRB 101017A: ROTSE-III Optical Limits
  19. GRB 101017A: Swift detection of a burst with optical counterpart
  20. Konus-Wind observation of GRB 101014A
  21. GRB 100906A: D50 optical detection
  22. GRB 101011A: XRT Refined Analysis
  23. GRB 101011A: Swift detection of a burst
  24. Swift Trigger 435520 is probably not a GRB
  25. GRB 100928A: Swift detection of a burst
  26. GRB100925A/MAXI J1659-152 MITSuME Ishigakijima and Okayama Optical Observation
  27. GRB 100924A: GROND detection of an optical/NIR afterglow
  28. GRB 100924A: Swift-BAT refined analysis
  29. GRB 100916A: Fermi GBM detection
  30. GRB 100915B: a long GRB detected by INTEGRAL
  31. GRB 100901A: optical observation in Maidanak, break confirmation
  32. GRB 100909A: ROTSE-III Optical Limits
  33. GRB 100909A: a long GRB detected by INTEGRAL
  34. GRB100906A: detection at 15GHz
  35. GRB 100901A: CrAO optical observations
  36. Konus-Wind observation of GRB 100906A
  37. GRB100906A: Optical observations at IAO
  38. GRB 100906A: MASTER preliminary prompt+afterglow lc
  39. GRB 100901A: ISON-NM optical observations
  40. GRB 100906A: MASTER early OT observations
  41. GRB 100905A: Swift-XRT refined analysis.
  42. GRB 100905A: MASTER Prompt Optical Observations
  43. GRB 100905A: Swift detection of a burst
  44. Konus-Wind observation of GRB 100829A
  45. GRB 100902A: optical observation at Mt.Terskol
  46. GRB 100902A: MASTER Prompt Optical Observations
  47. GRB 100902A: MASTER Optical Early Limit
  48. GRB 100901A: Vega telescope optical afterglow observation
  49. Swift/UVOT Observations of GRB100901A
  50. GRB 100901A: SARA-N observations
  51. GRB 100901A: Swift-XRT Team refined analysis
  52. GRB 100901A: optical observation at Mt.Terskol
  53. GRB 100901A: MASTER Optical Early Limits
  54. GRB 100901A: Swift detection of a burst with an optical afterglow
  55. Konus-Wind observation of GRB 100826A
  56. GRB 100823A: optical observations
  57. GRB 100823A: MAXI/GSC detection
  58. GRB 100725B: Mondy optical upper limit
  59. GRB 100823A: Swift XRT refined analysis
  60. GRB 100823A: Swift detection of a burst
  61. GRB 100814A: ISON-NM optical observations
  62. Konus-Wind observation of GRB 100816A
  63. GRB 100816A: VLT and Gemini-N revised redshift
  64. Konus-Wind observation of GRB 100814A
  65. GRB100816A Swift-XRT refined analysis
  66. GRB 100816A: Swift-BAT spectral lag results
  67. GRB 100816A: ROTSE-III Optical Limits
  68. GRB 100814A: Swift-XRT refined analysis
  69. GRB 100814A: Swift detection of a burst with an optical afterglow
  70. GRB 100805A: optical observation in CrAO
  71. GRB 100807A: Swift-BAT refined analysis
  72. GRB 100807A: ROTSE-III Optical Limits
  73. GRB 100805A: Swift-BAT refined analysis
  74. GRB 100805A: ROTSE-III Optical Limits
  75. GRB 100805A: Swift detection of a burst with an optical counterpart
  76. GRB 100802A: XRT refined analysis
  77. GRB 100802A: ROTSE-III Optical Limits
  78. GRB 100725B: TELMA optical observation
  79. GRB 100728B: Continued KAIT observations
  80. GRB 100728B, Swift-BAT refined analysis
  81. GRB 100728B: Swift-XRT Refined Analysis
  82. Konus-Wind observation of GRB 100728A
  83. GRB 100727A: Swift XRT refined analysis
  84. GRB 100727A: Swift detection of a burst
  85. GRB 100725B: refined XRT analysis
  86. GRB 100725A: GROND upper limits
  87. GRB 100725A: Swift XRT refined analysis
  88. GRB 100725B: Swift detection of a burst
  89. Konus-Wind observation of GRB 100724B
  90. GRB 100724B: Fermi LAT and GBM analysis
  91. GRB 100724A: Swift XRT refined analysis
  92. GRB 100724A: Swift-BAT refined analysis
  93. GRB 100724A: Swift detection of a burst
  94. GRB 100718A: MASTER-Net optical prompt and alert observations
  95. GRB 100713A: Swift XRT refined analysis
  96. GRB100713A: Swift X-ray afterglow detection
  97. GRB 100713A: a long GRB detected by INTEGRAL
  98. Konus-Wind observation of GRB 100707A
  99. GRB 100707A: Fermi LAT detection
  100. Konus-Wind observation of GRB 100701B

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