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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"

21905 results found.

  1. GRB 110210A: ROVOR Upper Limit
  2. GRB110213A: RAPTOR Early Optical Peak and Plateau Measurements
  3. GRB 110212A: Swift XRT and UVOT observations
  4. GRB 110205A: Konkoly optical observations
  5. GRB 110213B: Swift XRT observation
  6. GRB 110213A: MITSuME Akeno Optical Observation
  7. Konus-Wind observation of GRB 110213A
  8. Konus-Wind observation of GRB 110213B
  9. GRB110213A: MITSuME Okayama Optical Observation
  10. GRB 110213A: Swift/UVOT refined analysis
  11. GRB 110213A, Swift-BAT refined analysis
  12. GRB 110213A: optical observations
  13. GRB 110213A: Enhanced Swift-XRT position
  14. GRB110212A: MITSuME Okayama optical upper limits
  15. GRB 110213A: P60 Optical Afterglow Detection
  16. GRB 110213A: Swift detection of a burst with optical afterglow
  17. GRB 110212A: GRT Optical Observation
  18. GRB 110212A: SARA-N Optical Limits
  19. GRB 110201A: Subaru/MOIRCS Ks-band photometry
  20. GRB 110205A: detection of optical linear polarization from CAHA
  21. GRB 110207A: Suzaku WAM observation of the prompt emission
  22. GRB 110205A: Swift/BAT and Suzaku/WAM joint spectral analysis
  23. GRB 110210A: Enhanced Swift-XRT position
  24. GRB 110201A: optical observations
  25. GRB 110210A: Swift detection of a burst
  26. Swift/UVOT observations of GRB110208a
  27. GRB 110205A: Suzaku WAM observation of the prompt emission
  28. GRB 110207A: Swift-XRT observations
  29. GRB 110208A: Enhanced Swift-XRT position
  30. GRB 110208A: Swift detection of a burst
  31. GRB 110206A: Decay of afterglow candidate
  32. GRB 110207A: TAROT Calern observatory optical observations
  33. GRB 110206A: GROND detection of afterglow candidate
  34. Konus-Wind observation of GRB 110205A
  35. GRB 110206A: Swift detection of a probable X-ray afterglow
  36. GRB 110206A: TAROT La Silla observatory optical observations
  37. GRB110205A: MITSuME Ishigakijima Optical Observation
  38. GRB110205A: MITSuME Okayama Optical Observation
  39. GRB 110205A: Swift/UVOT Continuing Observations
  40. GRB 110205A: Lulin optical observations and temporal decay index
  41. Observations GRB 110205A
  42. GRB 110205A: Swift-BAT refined analysis
  43. GRB 110205A: Newcastle Observatory Optical Observations
  44. GRB 110205A: LOAO B/R Observation
  45. GRB 101225A is likely at z~0
  46. GRB 110205A: optical flare confirmation
  47. GRB 110205A: NOT redshift confirmation
  48. GRB 110205A: Enhanced Swift-XRT position
  49. GRB 110205A: PAIRITEL NIR Afterglow Detection
  50. GRB 110205A: Swift/UVOT Confirmation of Flaring Afterglow
  51. GRB 110205A: TAROT Calern observatory detection of an optical flare
  52. GRB 110205A: TAROT Calern observatory optical detection
  53. GRB 110205A: Swift detection of a burst with an optical candidate
  54. GRB110201A: MITSuME Okayama optical upper limits
  55. Swift/UVOT observations of GRB110201A
  56. GRB 110201A: Swift detection of a burst
  57. GRB110112B: EVLA Observations
  58. GRB101224A: EVLA Observations
  59. GRB110112A: EVLA Observations
  60. GRB110128A: MITSuME Okayama optical upper limits
  61. GRB 101112A: Maidanak and CrAO optical observations
  62. GRB110128A: TNG NIR observations
  63. GRB 110128A: Swift/UVOT observations
  64. GRB 110120A: Suzaku WAM observation of the prompt emission
  65. GRB 110128A: WHT redshifts of nearby field galaxies
  66. GRB 110128A: Enhanced Swift-XRT position
  67. GRB 110128A: Afterglow detection from NOT
  68. GRB 110128A: TAROT Calern observatory upper limits
  69. GRB 110128A: Swift detection of a burst
  70. Konus-Wind observation of GRB 110120A
  71. GRB 110123A: Fermi GBM detection
  72. GRB 110106B, radio observations
  73. GRB 110120A: MASTER optical observations
  74. GRB 101224A, the review of the sky area in plate archives
  75. IPN triangulation of GRB 110120A
  76. GRB 101225A: CQUEAN optical observation
  77. GRB 110106A: CrAO optical observations
  78. GRB 110120A: Fermi GBM detection
  79. GRB 110119A: Suzaku WAM observation of the prompt emission
  80. GRB 110112A: optical upper limit
  81. GRB 110120A: MASTER optical observations
  82. GRB110119: Swift/UVOT Detection
  83. GRB110119A: MITSuME Okayama optical upper limits
  84. GRB 110119A: Swift-BAT refined analysis
  85. GRB 110119A: PAIRITEL NIR Afterglow Detection
  86. GRB 110119A: Enhanced Swift-XRT position
  87. GRB 110119A: Swift detection of a burst with an optical detection
  88. GRB110106A, mm-radio observations
  89. GRB 101219B: GROND detection of a SN signature
  90. Swift-BAT trigger 442771 is a noise fluctuation
  91. New feature in Fermi GBM GRB Ground Position Notices
  92. Swift-BAT Trigger 442539 is not a GRB
  93. Swift Trigger 442539 is probably not a GRB
  94. Short GRB 110112B : early optical limit by "Pi of the Sky"
  95. GRB 110112B: Swift XRT and UVOT observations of the INTEGRAL burst
  96. GRB 110112A: MITSuME Akeno and Okayama optical upper limits
  97. GRB 110107A: Swift-XRT afterglow confirmation
  98. GRB 101225A: Redshift retraction and results of additional photometric follow-up at the NOT
  99. GRB 110112B: A short GRB detected by INTEGRAL
  100. GRB 110112A: Swift/UVOT upper limits

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