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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"

23705 results found.

  1. GRB 110223A: Observations from BOOTES-2
  2. GRB 110223B: Swift detection of a burst
  3. GRB 110223A: Swift detection of a burst
  4. GRB 101225A, the review of the sky area in plate archives
  5. GRB110213B: X-ray afterglow confirmation
  6. Swift XRT and UVOT Observations of OT 110215
  7. Swift/UVOT observations of GRB110210a.
  8. GRB 110213B: Gemini South Redshift
  9. GRB 110213A: YNAO-GMG Observations
  10. GRB 110213A: TNT optical observations
  11. Swift GRB110213A: interesting behaviour
  12. GRB 110213B: Swift XRT observation
  13. Konus-Wind observation of GRB 110213A
  14. Konus-Wind observation of GRB 110213B
  15. GRB 110213B: MAXI/GSC refined analysis
  16. GRB110213A: MITSuME Okayama Optical Observation
  17. GRB 110213B: MAXI/GSC detection of a probable GRB
  18. GRB 110213A, Swift-BAT refined analysis
  19. GRB110212A: MITSuME Okayama optical upper limits
  20. GRB 110213A: KAIT observations
  21. GRB 110213A: GRAS011 optical observations
  22. GRB 110213A: Bok Telescope Redshift
  23. GRB 110213A: Swift detection of a burst with optical afterglow
  24. GRB 110212A, Swift-BAT refined analysis
  25. GRB 110212A: SARA-N Optical Limits
  26. GRB 110212A: Swift detection of a burst
  27. GRB 110201A: Subaru/MOIRCS Ks-band photometry
  28. GRB 110207A: Suzaku WAM observation of the prompt emission
  29. GRB 110205A: Swift/BAT and Suzaku/WAM joint spectral analysis
  30. GRB 110210A: Swift-BAT refined analysis
  31. Swift-BAT refined analysis of outburst from 1E 1841-04.5
  32. GRB 110210A: Swift detection of a burst
  33. GRB 110208A: Magellan confirmation of the optical afterglow
  34. Swift/UVOT observations of GRB110208a
  35. GRB 110205A: Suzaku WAM observation of the prompt emission
  36. GRB 110208A: Swift-BAT refined analysis
  37. GRB 110208A: Magellan optical observations
  38. GRB 110208A: Swift detection of a burst
  39. SGR-like outburst from the magnetar 1E 1841-04.5
  40. GRB 110205A : HCT optical observations
  41. GRB 110207A: TAROT Calern observatory optical observations
  42. GRB 110207A: Swift-BAT refined analysis
  43. GRB 110205A: WSRT radio observation
  44. GRB 110207A: MASTER prompt and early optical observations
  45. Konus-Wind observation of GRB 110205A
  46. GRB 110207A: Swift detection of a burst
  47. GRB 110206A: TAROT La Silla observatory optical observations
  48. GRB 110206A: a long GRB detected by INTEGRAL
  49. GRB110205A: MITSuME Ishigakijima Optical Observation
  50. GRB110205A: MITSuME Okayama Optical Observation
  51. GRB110205A: SMA 1.3mm Observations
  52. GRB 110205A: Swift/UVOT Continuing Observations
  53. Observations GRB 110205A
  54. GRB 110205A: Swift-BAT refined analysis
  55. GRB 110205A: optical flare confirmation
  56. GRB 110205A: FAST Redshift
  57. GRB 110205A: Possible Lick/Kast redshift
  58. GRB 110205A: Swift/UVOT Confirmation of Flaring Afterglow
  59. GRB 110205A: TAROT Calern observatory detection of an optical flare
  60. GRB 110205A: TAROT Calern observatory optical detection
  61. GRB 110205A: Swift detection of a burst with an optical candidate
  62. GRB 110128A: Fermi GBM detection
  63. GRB 110201A: Swift-XRT refined Analysis
  64. GRB110201A: MITSuME Okayama optical upper limits
  65. Swift/UVOT observations of GRB110201A
  66. GRB 110201A: Swift-BAT refined analysis
  67. GRB 110201A: MASTER optical observations
  68. GRB 110201A: Swift detection of a burst
  69. GRB110128A: MITSuME Okayama optical upper limits
  70. GRB 110125A: Fermi GBM detection
  71. GRB 101112A: Maidanak and CrAO optical observations
  72. GRB110128A: TNG NIR observations
  73. GRB 110128A, Swift-BAT refined analysis
  74. GRB 110128A: TAROT-Calern refined analysis
  75. GRB 110120A: Suzaku WAM observation of the prompt emission
  76. GRB 110128A: WHT redshifts of nearby field galaxies
  77. GRB 110128A: VLT/X-shooter redshift
  78. GRB 110128A: TAROT Calern observatory upper limits
  79. GRB 110128A: Swift detection of a burst
  80. Konus-Wind observation of GRB 110120A
  81. GRB 110120A: MASTER optical observations
  82. GRB 101224A, the review of the sky area in plate archives
  83. IPN triangulation of GRB 110120A
  84. GRB 110120A: Fermi GBM detection
  85. GRB 110119A: Suzaku WAM observation of the prompt emission
  86. GRB 110120A: MASTER optical observations
  87. GRB110119A: MITSuME Okayama optical upper limits
  88. GRB 110119A: Swift-BAT refined analysis
  89. GRB 110119A: Swift detection of a burst with an optical detection
  90. Swift-BAT trigger 442771 is a noise fluctuation
  91. Swift Trigger 442539 is probably not a GRB
  92. Short GRB 110112B : early optical limit by "Pi of the Sky"
  93. GRB 110112B: Swift XRT and UVOT observations of the INTEGRAL burst
  94. GRB 110112A: MITSuME Akeno and Okayama optical upper limits
  95. GRB 101225A: Redshift retraction and results of additional photometric follow-up at the NOT
  96. GRB 110112B: A short GRB detected by INTEGRAL
  97. GRB 110112A: Swift-XRT refined Analysis
  98. GRB 110112A: Swift/UVOT upper limits
  99. GRB 110112A: MASTER optical observations
  100. GRB 110112A: Swift-BAT refined analysis

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