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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"

42807 results found.

  1. GRB110213A: RAPTOR Early Optical Peak and Plateau Measurements
  2. GRB 110212A: Swift XRT and UVOT observations
  3. Swift GRB110213A: interesting behaviour
  4. GRB 110213A: Fermi GBM observation
  5. GRB 110205A: Konkoly optical observations
  6. GRB 110213B: Swift XRT observation
  7. Konus-Wind observation of GRB 110213A
  8. Konus-Wind observation of GRB 110213B
  9. GRB 110213A: Swift-XRT refined Analysis
  10. GRB 110213B: MAXI/GSC refined analysis
  11. GRB 110213A: Swift/UVOT refined analysis
  12. GRB 110213B: MAXI/GSC detection of a probable GRB
  13. GRB 110213A, Swift-BAT refined analysis
  14. GRB 110213A: optical observations
  15. GRB 110213A: Enhanced Swift-XRT position
  16. GRB 110213A: KAIT observations
  17. GRB 110213A: GRAS011 optical observations
  18. GRB 110213A: Bok Telescope Redshift
  19. GRB 110213A: ROTSE-III Detection of Optical Counterpart
  20. GRB 110213A: P60 Optical Afterglow Detection
  21. GRB 110213A: Swift detection of a burst with optical afterglow
  22. GRB 110212A: GRT Optical Observation
  23. GRB 110212A, Swift-BAT refined analysis
  24. GRB110212A: BOOTES-2/TELMA optical limits
  25. GRB 110212A: ROTSE-III Optical Limits
  26. GRB 110212A: Swift detection of a burst
  27. GRB 110201A: Subaru/MOIRCS Ks-band photometry
  28. Konus-Wind observation of GRB 110205A (correction to GCN 11659)
  29. GRB 110205A: detection of optical linear polarization from CAHA
  30. GRB 110207A: Suzaku WAM observation of the prompt emission
  31. GRB 110210A: optical upper limit
  32. GRB 110210A: Swift-XRT refined Analysis
  33. GRB 110205A: Swift/BAT and Suzaku/WAM joint spectral analysis
  34. GRB 110210A: Swift-BAT refined analysis
  35. Swift-BAT refined analysis of outburst from 1E 1841-04.5
  36. GRB 110210A: Enhanced Swift-XRT position
  37. GRB 110201A: optical observations
  38. GRB 110210A: Swift detection of a burst
  39. GRB 110206A: Swift-XRT confirmation of the X-ray afterglow
  40. GRB 110208A: Magellan confirmation of the optical afterglow
  41. Fermi GBM detection of a burst from 1E 1841-045
  42. Swift/UVOT observations of GRB110208a
  43. GRB 110205A: Suzaku WAM observation of the prompt emission
  44. GRB 110208A: Potential afterglow from Magellan
  45. GRB 110207A: Swift-XRT observations
  46. GRB 110208A: Swift-XRT refined Analysis
  47. GRB 110208A: Enhanced Swift-XRT position
  48. GRB 110208A: Swift-BAT refined analysis
  49. GRB 110206A: SMARTS optical/IR afterglow decay
  50. GRB 110208A: Swift detection of a burst
  51. SGR-like outburst from the magnetar 1E 1841-04.5
  52. GRB 110205A: optical observations in Mondy observatory
  53. GRB 110207A: Fermi GBM observation
  54. GRB 110206A: Decay of afterglow candidate
  55. GRB 110206A: SMARTS optical/IR afterglow candidate observations
  56. GRB 110207A: TAROT Calern observatory optical observations
  57. GRB 110205A - Continued PAIRITEL NIR Observations
  58. GRB 110206A: GROND detection of afterglow candidate
  59. GRB 110207A: Swift-BAT refined analysis
  60. GRB 110205A: WSRT radio observation
  61. GRB 110206A: UVOT detection of afterglow candidate
  62. GRB110205A: CARMA 3mm Observations
  63. GRB 110207A: MASTER prompt and early optical observations
  64. Konus-Wind observation of GRB 110205A
  65. GRB 110207A: Swift detection of a burst
  66. GRB 110206A: Swift detection of a probable X-ray afterglow
  67. GRB 110206A: TAROT La Silla observatory optical observations
  68. GRB 110206A: a long GRB detected by INTEGRAL
  69. GRB 110205A : Lulin optical observation
  70. GRB110205A: SMA 1.3mm Observations
  71. GRB 110205A: Swift/UVOT Continuing Observations
  72. GRB 110205A: Swift-BAT refined analysis
  73. GRB 110205A: Newcastle Observatory Optical Observations
  74. GRB 110205A: Swift-XRT refined Analysis
  75. GRB 110205A: LOAO B/R Observation
  76. GRB 101225A is likely at z~0
  77. GRB 110205A: optical flare confirmation
  78. GRB 110205A: NOT redshift confirmation
  79. GRB 110205A: Enhanced Swift-XRT position
  80. GRB 110205A: FAST Redshift
  81. GRB 110205A: GRAS005 optical observations
  82. GRB 110205A: PAIRITEL NIR Afterglow Detection
  83. GRB 110205A: Possible Lick/Kast redshift
  84. GRB 110205A: Swift/UVOT Confirmation of Flaring Afterglow
  85. GRB 110205A: Liverpool Telescope Afterglow Confirmation
  86. GRB 110205A: TAROT Calern observatory detection of an optical flare
  87. GRB 110205A: ROTSE-III, Optical Counterpart is flaring to ~14 mag
  88. GRB 110205A: TAROT Calern observatory optical detection
  89. GRB 110205A: Swift detection of a burst with an optical candidate
  90. GRB 110128A: Fermi GBM detection
  91. GRB 110201A: Swift-XRT refined Analysis
  92. Swift/UVOT observations of GRB110201A
  93. GRB 110201A: Swift-BAT refined analysis
  94. GRB 110201A: MASTER optical observations
  95. GRB 110201A: Swift detection of a burst
  96. GRB110112B: EVLA Observations
  97. GRB101224A: EVLA Observations
  98. GRB110112A: EVLA Observations
  99. GRB 110125A: Fermi GBM detection
  100. GRB 101112A: Maidanak and CrAO optical observations

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