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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"

28240 results found.

  1. GRB 110212A, Swift-BAT refined analysis
  2. GRB 110212A: SARA-N Optical Limits
  3. GRB 110201A: Subaru/MOIRCS Ks-band photometry
  4. GRB 110205A: detection of optical linear polarization from CAHA
  5. GRB 110207A: Suzaku WAM observation of the prompt emission
  6. GRB 110210A: Swift-XRT refined Analysis
  7. GRB 110205A: Swift/BAT and Suzaku/WAM joint spectral analysis
  8. GRB 110210A: Swift-BAT refined analysis
  9. Swift-BAT refined analysis of outburst from 1E 1841-04.5
  10. GRB 110210A: Enhanced Swift-XRT position
  11. GRB 110201A: optical observations
  12. GRB 110210A: Swift detection of a burst
  13. Fermi GBM detection of a burst from 1E 1841-045
  14. Swift/UVOT observations of GRB110208a
  15. GRB 110205A: Suzaku WAM observation of the prompt emission
  16. GRB 110207A: Swift-XRT observations
  17. GRB 110208A: Swift-XRT refined Analysis
  18. GRB 110208A: Enhanced Swift-XRT position
  19. GRB 110208A: Swift-BAT refined analysis
  20. GRB 110208A: Swift detection of a burst
  21. GRB 110205A : HCT optical observations
  22. GRB 110206A: Decay of afterglow candidate
  23. GRB 110207A: TAROT Calern observatory optical observations
  24. GRB 110206A: GROND detection of afterglow candidate
  25. GRB 110207A: Swift-BAT refined analysis
  26. Konus-Wind observation of GRB 110205A
  27. GRB 110206A: Swift detection of a probable X-ray afterglow
  28. GRB 110206A: TAROT La Silla observatory optical observations
  29. GRB 110205A: Lightbuckets Optical Observations
  30. GRB 110206A: a long GRB detected by INTEGRAL
  31. GRB110205A: MITSuME Ishigakijima Optical Observation
  32. GRB110205A: MITSuME Okayama Optical Observation
  33. GRB 110205A: Swift/UVOT Continuing Observations
  34. Observations GRB 110205A
  35. GRB 110205A: Swift-BAT refined analysis
  36. GRB 110205A: Newcastle Observatory Optical Observations
  37. GRB 110205A: Swift-XRT refined Analysis
  38. GRB 110205A: LOAO B/R Observation
  39. GRB 110205A: optical flare confirmation
  40. GRB 110205A: NOT redshift confirmation
  41. GRB 110205A: Enhanced Swift-XRT position
  42. GRB 110205A: PAIRITEL NIR Afterglow Detection
  43. GRB 110205A: Swift/UVOT Confirmation of Flaring Afterglow
  44. GRB 110205A: TAROT Calern observatory detection of an optical flare
  45. GRB 110205A: ROTSE-III, Optical Counterpart is flaring to ~14 mag
  46. GRB 110205A: TAROT Calern observatory optical detection
  47. GRB 110205A: Swift detection of a burst with an optical candidate
  48. GRB 110128A: Fermi GBM detection
  49. GRB 110201A: Swift-XRT refined Analysis
  50. GRB110201A: MITSuME Okayama optical upper limits
  51. Swift/UVOT observations of GRB110201A
  52. GRB 110201A: Swift-BAT refined analysis
  53. GRB 110201A: Swift detection of a burst
  54. GRB110112B: EVLA Observations
  55. GRB110112A: EVLA Observations
  56. GRB110128A: MITSuME Okayama optical upper limits
  57. GRB 110125A: Fermi GBM detection
  58. GRB 101112A: Maidanak and CrAO optical observations
  59. GRB110128A: TNG NIR observations
  60. GRB 110128A, Swift-BAT refined analysis
  61. GRB 110128A: Swift/UVOT observations
  62. GRB 110128A: Swift-XRT refined Analysis
  63. GRB 110120A: Suzaku WAM observation of the prompt emission
  64. GRB 110128A: WHT redshifts of nearby field galaxies
  65. GRB 110128A: Enhanced Swift-XRT position
  66. GRB 110128A: Afterglow detection from NOT
  67. GRB 110128A: TAROT Calern observatory upper limits
  68. GRB 110128A: Swift detection of a burst
  69. IBAS Alerts n. 6130 and 6131 are not due to a GRB
  70. GRB 110123A: Fermi GBM detection
  71. GRB 110106B, radio observations
  72. GRB 110120A: MASTER optical observations
  73. GRB 101224A, the review of the sky area in plate archives
  74. IPN triangulation of GRB 110120A
  75. GRB 101225A: CQUEAN optical observation
  76. GRB 110106A: CrAO optical observations
  77. GRB 110119A: Fermi GBM detection
  78. GRB 110120A: Fermi GBM detection
  79. GRB 110119A: Suzaku WAM observation of the prompt emission
  80. GRB 110112A: optical upper limit
  81. GRB110119: Swift/UVOT Detection
  82. GRB 110119A: Swift-XRT refined Analysis
  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. GRB101225A - timing analysis
  96. GRB 110112B: Swift XRT and UVOT observations of the INTEGRAL burst
  97. GRB 110112A: MITSuME Akeno and Okayama optical upper limits
  98. GRB 110107A: Swift-XRT afterglow confirmation
  99. GRB 101225A: HST observations - no host detected
  100. GRB 110112A: Swift-XRT refined Analysis

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