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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"

28251 results found.

  1. GRB 110213A: Swift-XRT refined Analysis
  2. GRB110213A: MITSuME Okayama Optical Observation
  3. GRB 110213A: Swift/UVOT refined analysis
  4. GRB 110213A, Swift-BAT refined analysis
  5. GRB 110213A: optical observations
  6. GRB 110213A: Enhanced Swift-XRT position
  7. GRB110212A: MITSuME Okayama optical upper limits
  8. GRB 110213A: ROTSE-III Detection of Optical Counterpart
  9. GRB 110213A: P60 Optical Afterglow Detection
  10. GRB 110213A: Swift detection of a burst with optical afterglow
  11. GRB 110212A: GRT Optical Observation
  12. GRB 110212A, Swift-BAT refined analysis
  13. GRB 110212A: SARA-N Optical Limits
  14. GRB 110201A: Subaru/MOIRCS Ks-band photometry
  15. GRB 110205A: detection of optical linear polarization from CAHA
  16. GRB 110207A: Suzaku WAM observation of the prompt emission
  17. GRB 110210A: Swift-XRT refined Analysis
  18. GRB 110205A: Swift/BAT and Suzaku/WAM joint spectral analysis
  19. GRB 110210A: Swift-BAT refined analysis
  20. Swift-BAT refined analysis of outburst from 1E 1841-04.5
  21. GRB 110210A: Enhanced Swift-XRT position
  22. GRB 110201A: optical observations
  23. GRB 110210A: Swift detection of a burst
  24. Fermi GBM detection of a burst from 1E 1841-045
  25. Swift/UVOT observations of GRB110208a
  26. GRB 110205A: Suzaku WAM observation of the prompt emission
  27. GRB 110207A: Swift-XRT observations
  28. GRB 110208A: Swift-XRT refined Analysis
  29. GRB 110208A: Enhanced Swift-XRT position
  30. GRB 110208A: Swift-BAT refined analysis
  31. GRB 110208A: Swift detection of a burst
  32. GRB 110205A : HCT optical observations
  33. GRB 110206A: Decay of afterglow candidate
  34. GRB 110207A: TAROT Calern observatory optical observations
  35. GRB 110206A: GROND detection of afterglow candidate
  36. GRB 110207A: Swift-BAT refined analysis
  37. Konus-Wind observation of GRB 110205A
  38. GRB 110206A: Swift detection of a probable X-ray afterglow
  39. GRB 110206A: TAROT La Silla observatory optical observations
  40. GRB 110205A: Lightbuckets Optical Observations
  41. GRB 110206A: a long GRB detected by INTEGRAL
  42. GRB110205A: MITSuME Ishigakijima Optical Observation
  43. GRB110205A: MITSuME Okayama Optical Observation
  44. GRB 110205A: Swift/UVOT Continuing Observations
  45. Observations GRB 110205A
  46. GRB 110205A: Swift-BAT refined analysis
  47. GRB 110205A: Newcastle Observatory Optical Observations
  48. GRB 110205A: Swift-XRT refined Analysis
  49. GRB 110205A: LOAO B/R Observation
  50. GRB 110205A: optical flare confirmation
  51. GRB 110205A: NOT redshift confirmation
  52. GRB 110205A: Enhanced Swift-XRT position
  53. GRB 110205A: PAIRITEL NIR Afterglow Detection
  54. GRB 110205A: Swift/UVOT Confirmation of Flaring Afterglow
  55. GRB 110205A: TAROT Calern observatory detection of an optical flare
  56. GRB 110205A: ROTSE-III, Optical Counterpart is flaring to ~14 mag
  57. GRB 110205A: TAROT Calern observatory optical detection
  58. GRB 110205A: Swift detection of a burst with an optical candidate
  59. GRB 110128A: Fermi GBM detection
  60. GRB 110201A: Swift-XRT refined Analysis
  61. GRB110201A: MITSuME Okayama optical upper limits
  62. Swift/UVOT observations of GRB110201A
  63. GRB 110201A: Swift-BAT refined analysis
  64. GRB 110201A: Swift detection of a burst
  65. GRB110112B: EVLA Observations
  66. GRB110112A: EVLA Observations
  67. GRB110128A: MITSuME Okayama optical upper limits
  68. GRB 110125A: Fermi GBM detection
  69. GRB 101112A: Maidanak and CrAO optical observations
  70. GRB110128A: TNG NIR observations
  71. GRB 110128A, Swift-BAT refined analysis
  72. GRB 110128A: Swift/UVOT observations
  73. GRB 110128A: Swift-XRT refined Analysis
  74. GRB 110120A: Suzaku WAM observation of the prompt emission
  75. GRB 110128A: WHT redshifts of nearby field galaxies
  76. GRB 110128A: Enhanced Swift-XRT position
  77. GRB 110128A: Afterglow detection from NOT
  78. GRB 110128A: TAROT Calern observatory upper limits
  79. GRB 110128A: Swift detection of a burst
  80. IBAS Alerts n. 6130 and 6131 are not due to a GRB
  81. GRB 110123A: Fermi GBM detection
  82. GRB 110106B, radio observations
  83. GRB 110120A: MASTER optical observations
  84. GRB 101224A, the review of the sky area in plate archives
  85. IPN triangulation of GRB 110120A
  86. GRB 101225A: CQUEAN optical observation
  87. GRB 110106A: CrAO optical observations
  88. GRB 110119A: Fermi GBM detection
  89. GRB 110120A: Fermi GBM detection
  90. GRB 110119A: Suzaku WAM observation of the prompt emission
  91. GRB 110112A: optical upper limit
  92. GRB110119: Swift/UVOT Detection
  93. GRB 110119A: Swift-XRT refined Analysis
  94. GRB110119A: MITSuME Okayama optical upper limits
  95. GRB 110119A: Swift-BAT refined analysis
  96. GRB 110119A: PAIRITEL NIR Afterglow Detection
  97. GRB 110119A: Enhanced Swift-XRT position
  98. GRB 110119A: Swift detection of a burst with an optical detection
  99. GRB110106A, mm-radio observations
  100. GRB 101219B: GROND detection of a SN signature

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