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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"

36347 results found.

  1. GRB 110213A: Swift detection of a burst with optical afterglow
  2. GRB 110212A: GRT Optical Observation
  3. GRB 110212A, Swift-BAT refined analysis
  4. GRB 110212A: SARA-N Optical Limits
  5. GRB110212A: BOOTES-2/TELMA optical limits
  6. GRB 110212A: ROTSE-III Optical Limits
  7. GRB 110212A: Swift detection of a burst
  8. GRB 110201A: Subaru/MOIRCS Ks-band photometry
  9. Konus-Wind observation of GRB 110205A (correction to GCN 11659)
  10. GRB 110205A: detection of optical linear polarization from CAHA
  11. GRB 110207A: Suzaku WAM observation of the prompt emission
  12. GRB 110210A: optical upper limit
  13. GRB 110210A: Swift-XRT refined Analysis
  14. GRB 110205A: Swift/BAT and Suzaku/WAM joint spectral analysis
  15. GRB 110210A: Swift-BAT refined analysis
  16. GRB 110210A: Enhanced Swift-XRT position
  17. GRB 110201A: optical observations
  18. GRB 110210A: Swift detection of a burst
  19. GRB 110206A: Swift-XRT confirmation of the X-ray afterglow
  20. GRB 110208A: Magellan confirmation of the optical afterglow
  21. Swift/UVOT observations of GRB110208a
  22. GRB 110205A: Suzaku WAM observation of the prompt emission
  23. GRB 110208A: Potential afterglow from Magellan
  24. GRB 110207A: Swift-XRT observations
  25. GRB 110208A: Swift-XRT refined Analysis
  26. GRB 110208A: Enhanced Swift-XRT position
  27. GRB 110208A: Swift-BAT refined analysis
  28. GRB 110208A: Magellan optical observations
  29. GRB 110206A: SMARTS optical/IR afterglow decay
  30. GRB 110208A: Swift detection of a burst
  31. GRB 110205A: optical observations in Mondy observatory
  32. GRB 110207A: Fermi GBM observation
  33. GRB 110205A : HCT optical observations
  34. GRB 110206A: Decay of afterglow candidate
  35. GRB 110206A: SMARTS optical/IR afterglow candidate observations
  36. GRB 110207A: TAROT Calern observatory optical observations
  37. GRB 110205A - Continued PAIRITEL NIR Observations
  38. GRB 110206A: GROND detection of afterglow candidate
  39. GRB 110207A: Swift-BAT refined analysis
  40. GRB 110205A: WSRT radio observation
  41. GRB 110206A: UVOT detection of afterglow candidate
  42. GRB 110207A: MASTER prompt and early optical observations
  43. Konus-Wind observation of GRB 110205A
  44. GRB 110207A: Swift detection of a burst
  45. GRB 110206A: Swift detection of a probable X-ray afterglow
  46. GRB 110206A: TAROT La Silla observatory optical observations
  47. GRB 110205A: Lightbuckets Optical Observations
  48. GRB 110206A: a long GRB detected by INTEGRAL
  49. GRB 110205A : Lulin optical observation
  50. GRB110205A: MITSuME Ishigakijima Optical Observation
  51. GRB110205A: MITSuME Okayama Optical Observation
  52. GRB 110205A: Swift/UVOT Continuing Observations
  53. GRB 110205A: Lulin optical observations and temporal decay index
  54. Observations GRB 110205A
  55. GRB 110205A: Swift-BAT refined analysis
  56. GRB 110205A: Newcastle Observatory Optical Observations
  57. GRB 110205A: Swift-XRT refined Analysis
  58. GRB 110205A: LOAO B/R Observation
  59. GRB 101225A is likely at z~0
  60. GRB 110205A: optical flare confirmation
  61. GRB 110205A: NOT redshift confirmation
  62. GRB 110205A: Enhanced Swift-XRT position
  63. GRB 110205A: FAST Redshift
  64. GRB 110205A: GRAS005 optical observations
  65. GRB 110205A: PAIRITEL NIR Afterglow Detection
  66. GRB 110205A: Possible Lick/Kast redshift
  67. GRB 110205A: Swift/UVOT Confirmation of Flaring Afterglow
  68. GRB 110205A: Liverpool Telescope Afterglow Confirmation
  69. GRB 110205A: TAROT Calern observatory detection of an optical flare
  70. GRB 110205A: ROTSE-III, Optical Counterpart is flaring to ~14 mag
  71. GRB 110205A: TAROT Calern observatory optical detection
  72. GRB 110205A: Swift detection of a burst with an optical candidate
  73. GRB 110128A: Fermi GBM detection
  74. GRB 110201A: Swift-XRT refined Analysis
  75. GRB110201A: MITSuME Okayama optical upper limits
  76. Swift/UVOT observations of GRB110201A
  77. GRB 110201A: Swift-BAT refined analysis
  78. GRB 110201A: MASTER optical observations
  79. GRB 110201A: Swift detection of a burst
  80. GRB110112B: EVLA Observations
  81. GRB101224A: EVLA Observations
  82. GRB110112A: EVLA Observations
  83. GRB110128A: MITSuME Okayama optical upper limits
  84. GRB 110125A: Fermi GBM detection
  85. GRB 101112A: Maidanak and CrAO optical observations
  86. GRB110128A: TNG NIR observations
  87. GRB 110128A, Swift-BAT refined analysis
  88. GRB 110128A: TAROT-Calern refined analysis
  89. GRB 110128A: Swift/UVOT observations
  90. GRB 110128A: Swift-XRT refined Analysis
  91. GRB 110120A: Suzaku WAM observation of the prompt emission
  92. GRB 110128A: WHT redshifts of nearby field galaxies
  93. GRB 110128A: VLT/X-shooter redshift
  94. GRB 110128A: Enhanced Swift-XRT position
  95. GRB 110128A: Afterglow detection from NOT
  96. GRB 110128A: TAROT Calern observatory upper limits
  97. GRB 110128A: Swift detection of a burst
  98. IBAS Alerts n. 6130 and 6131 are not due to a GRB
  99. Konus-Wind observation of GRB 110120A
  100. GRB 110123A: Fermi GBM detection

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