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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"

24437 results found.

  1. Konus-Wind observation of GRB 110213B
  2. GRB110213A: MITSuME Okayama Optical Observation
  3. GRB 110213A: Lightbuckets Optical Observations
  4. GRB 110213A, Swift-BAT refined analysis
  5. GRB110212A: MITSuME Okayama optical upper limits
  6. GRB 110213A: Bok Telescope Redshift
  7. GRB 110213A: ROTSE-III Detection of Optical Counterpart
  8. GRB 110213A: P60 Optical Afterglow Detection
  9. GRB 110212A, Swift-BAT refined analysis
  10. GRB110212A: BOOTES-2/TELMA optical limits
  11. GRB 110212A: ROTSE-III Optical Limits
  12. GRB 110212A: Swift detection of a burst
  13. GRB 110205A: detection of optical linear polarization from CAHA
  14. GRB 110207A: Suzaku WAM observation of the prompt emission
  15. GRB 110210A: optical upper limit
  16. GRB 110205A: Swift/BAT and Suzaku/WAM joint spectral analysis
  17. GRB 110210A: Swift-BAT refined analysis
  18. Swift-BAT refined analysis of outburst from 1E 1841-04.5
  19. GRB 110210A: Swift detection of a burst
  20. Fermi GBM detection of a burst from 1E 1841-045
  21. GRB 110205A: Suzaku WAM observation of the prompt emission
  22. GRB 110208A: Swift-XRT refined Analysis
  23. GRB 110208A: Swift-BAT refined analysis
  24. GRB 110206A: SMARTS optical/IR afterglow decay
  25. GRB 110208A: Swift detection of a burst
  26. GRB 110207A: Fermi GBM observation
  27. GRB 110206A: SMARTS optical/IR afterglow candidate observations
  28. GRB 110205A - Continued PAIRITEL NIR Observations
  29. GRB 110207A: Swift-BAT refined analysis
  30. GRB110205A: CARMA 3mm Observations
  31. GRB 110207A: MASTER prompt and early optical observations
  32. Konus-Wind observation of GRB 110205A
  33. GRB 110207A: Swift detection of a burst
  34. GRB 110205A: Lightbuckets Optical Observations
  35. GRB 110206A: a long GRB detected by INTEGRAL
  36. GRB110205A: MITSuME Ishigakijima Optical Observation
  37. GRB110205A: MITSuME Okayama Optical Observation
  38. GRB 110205A: Swift-BAT refined analysis
  39. GRB 110205A: Newcastle Observatory Optical Observations
  40. GRB 110205A: Swift-XRT refined Analysis
  41. GRB 101225A is likely at z~0
  42. GRB 110205A: PAIRITEL NIR Afterglow Detection
  43. GRB 110205A: ROTSE-III, Optical Counterpart is flaring to ~14 mag
  44. GRB 110128A: Fermi GBM detection
  45. GRB110201A: MITSuME Okayama optical upper limits
  46. GRB 110201A: Swift-BAT refined analysis
  47. GRB 110201A: MASTER optical observations
  48. GRB110128A: MITSuME Okayama optical upper limits
  49. GRB 110125A: Fermi GBM detection
  50. GRB110128A: TNG NIR observations
  51. GRB 110128A, Swift-BAT refined analysis
  52. GRB 110120A: Suzaku WAM observation of the prompt emission
  53. GRB 110128A: VLT/X-shooter redshift
  54. IBAS Alerts n. 6130 and 6131 are not due to a GRB
  55. Konus-Wind observation of GRB 110120A
  56. GRB 110123A: Fermi GBM detection
  57. GRB 110120A: MASTER optical observations
  58. GRB 110120A: Fermi LAT detection
  59. GRB 110119A: Fermi GBM detection
  60. GRB 110120A: Fermi GBM detection
  61. GRB 110119A: Suzaku WAM observation of the prompt emission
  62. GRB 110120A: MASTER optical observations
  63. GRB 110119A: Swift-XRT refined Analysis
  64. GRB110119A: MITSuME Okayama optical upper limits
  65. GRB 110119A: Swift-BAT refined analysis
  66. GRB 110119A: PAIRITEL NIR Afterglow Detection
  67. GRB 101219B: GROND detection of a SN signature
  68. GRB 101219B: Likely the GRB host emission dominates now in the uvw2 filter
  69. New feature in Fermi GBM GRB Ground Position Notices
  70. Short GRB 110112B : early optical limit by "Pi of the Sky"
  71. GRB 110112B: Fermi GBM observation
  72. GRB 110112B: Swift XRT and UVOT observations of the INTEGRAL burst
  73. GRB 110112A: MITSuME Akeno and Okayama optical upper limits
  74. GRB 101225A: Redshift retraction and results of additional photometric follow-up at the NOT
  75. GRB 110112B: A short GRB detected by INTEGRAL
  76. GRB 110112A: WHT candidate afterglow/host galaxy
  77. GRB 110112A: MASTER optical observations
  78. GRB 110112A: Swift-BAT refined analysis
  79. GRB 110106B: MASTER optical observations
  80. GRB110112A: TNT optical afterglow candidate
  81. GRB 110112A: Swift detection of a possible short burst
  82. GRB 110106B: early optical and near-IR observations
  83. GRB 110106B: MASTER early optical observations
  84. GRB 110107A: Swift-BAT refined analysis
  85. GRB 110107A detected in ground analysis of BAT slew data
  86. GRB 110106B: Fermi GBM detection
  87. Short GRB 110106A: MASTER OT observations
  88. GRB 110106A: TNG NIR observations
  89. GRB 110106B: Liverpool Telescope observations
  90. GRB 110106A: MITSuME Okayama optical upper limits
  91. GRB 110106B: WHT candidate afterglow
  92. GRB 110106B: Swift-BAT refined analysis
  93. GRB 110106A: Swift-XRT refined Analysis
  94. GRB110106B: Xinglong TNT upper limit
  95. GRB 110106A: Swift-BAT refined analysis
  96. GRB 110106B: Swift detection of a burst
  97. GRB 110106A: TNG optical observations and candidate counterparts
  98. GRB 110106A: MASTER optical observations
  99. GRB110106A: Xinglong TNT upper limit
  100. GRB 110106A: Swift detection of a burst

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