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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.

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subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

32550 results found.

  1. GRB 100905A: Faulkes Telescope North observations
  2. Optical observations of GRB 100901A
  3. GRB10901A: Murikabushi telescope observation at 3 days after the burst
  4. GRB 100902A: UKIRT JK Observation
  5. GRB 100902A: GROND observations; afterglow candidate
  6. GRB 100901A: UKIRT zYJHK Observation
  7. GRB 100904A: Swift-BAT refined analysis
  8. GRB10901A: Optical observations at IAO
  9. Konus-Wind observation of GRB 100829A
  10. GRB 100902A: Swift-BAT refined analysis
  11. GRB 100901A: optical observation at Mt.Terskol
  12. GRB 100901A: multicolor photometry at Mt.Terskol
  13. GRB 100901A: Lightbuckets Optical Observations
  14. GRB 100901A: HCT optical observations
  15. Tentative redshift of GRB100902A from Swift-XRT data
  16. GRB 100902A: Swift XRT refined analysis
  17. GRB 100902A: Swift/UVOT Upper Limits
  18. GRB 100902A: optical observation at Mt.Terskol
  19. GRB 100901A: optical observation at Mt.Terskol
  20. GRB 100901A: Kanata Telescope observation of the optical afterglow
  21. GRB100901A: MITSuME Okayama Optical Observation at 1 day after the burst
  22. GRB 100901A: TLS Observations: Break?
  23. GRB100901A: Errata of MITSuME Okayama about reference catalog
  24. GRB 100902A: MASTER Prompt Optical Observations
  25. GRB 100901A: ISON-NM optical observations
  26. GRB 100902A: Faulkes Telescope South observations
  27. GRB 100902A: MASTER Optical Early Limit
  28. GRB 100901A: ROTSE-III Detection
  29. GRB 100901A: MASTER optical flare at 420s discovery
  30. GRB 100901A: Vega telescope optical afterglow observation
  31. Swift/UVOT Observations of GRB100901A
  32. GRB 100901A : HCT optical observations
  33. GRB 100901A: SARA-N observations
  34. GRB 100901A: THO optical observations
  35. GRB100901A: MITSuME Okayama Optical Observation
  36. GRB 100901A: Swift-XRT Team refined analysis
  37. GRB 100901A - NOT optical observation
  38. GRB 100901A: Swift-BAT refined analysis
  39. GRB 100901A: optical observation at Mt.Terskol
  40. GRB 100901A: optical observation at Mt.Terskol
  41. GRB 100901A: MASTER power low decay
  42. GRB 100901A: Gemini-N Redshift
  43. GRB 100901A: MASTER: the OT brightenning
  44. GRB 100901A: confirmation of the afterglow
  45. GRB 100901A: MASTER Optical Early Limits
  46. GRB 100901A: Faulkes Telescope North afterglow candidate
  47. Konus-Wind observation of GRB 100826A
  48. IPN triangulation of GRB 100826A
  49. GRB 100823A: optical upper limit
  50. GRB 100814A: Maidanak optical observations
  51. GRB 100823A: optical observations
  52. GRB 100823A: MAXI/GSC detection
  53. GRB 100725B: Mondy optical upper limit
  54. GRB 100725B: Maidanak optical upper limit
  55. GRB 100823A: Swift/UVOT Evidence for Fading Afterglow Emission
  56. GRB100807A: R band observations
  57. GRB100823A : MOA optical observation
  58. GRB 100823A: Candidate IR afterglow
  59. GRB 100823A: Swift XRT refined analysis
  60. GRB 100823A: VLT/X-Shooter spectroscopy
  61. GRB 100823A - second epoch WHT observations
  62. GRB 100823A: TNG NIR observations
  63. GRB 100823A: Swift/UVOT Upper Limits
  64. GRB 100823A: WHT observations
  65. GRB 100823A: Swift-BAT refined analysis
  66. GRB 100814A: Suzaku WAM observation of the prompt emission
  67. GRB 100814A: ISON-NM optical observations
  68. EVLA radio afterglow detection of GRB 100814A
  69. GRB 100814A: optical observations
  70. GRB 100816A: Fermi GBM observation (correction to GCN 11124)
  71. Konus-Wind observation of GRB 100816A
  72. GRB100816A: MITSuME optical upper limits
  73. GRB 100816A: Fermi GBM observation
  74. GRB 100816A: VLT and Gemini-N revised redshift
  75. GRB 100814A : Liverpool Telescope Observations
  76. GRB 100814A: NOT optical observations
  77. GRB 100816A: NOT optical observations
  78. Konus-Wind observation of GRB 100814A
  79. GRB 100814A : Lulin optical observation
  80. GRB 100816A : Lulin r'-band observation
  81. GRB 100816A: Gemini-N spectroscopy
  82. GRB 100816A: Swift UVOT Observations
  83. GRB100816A Swift-XRT refined analysis
  84. GRB 100816A: Swift-BAT spectral lag results
  85. GRB 100816A, Swift-BAT refined analysis
  86. GRB 100816A: Gemini-N imaging
  87. GRB 100816A: CQUEAN riz-band Detection, Host Galaxy?
  88. GRB100814A - interesting UVOT lightcurve.
  89. GRB 100816A: MASTER Optical Limits
  90. GRB100816A: TNG optical afterglow confirmation.
  91. GRB 100816A: ROTSE-III Optical Limits
  92. GRB 100816A: Swift detection of a possibly short burst with optical afterglow
  93. Swift-BAT trigger 431756 is not a burst
  94. Swift/UVOT observations of GRB100814A - title correction to GCN 11097
  95. GRB 100814A: Fermi GBM observation
  96. Swift/UVOT Observations of GRB100814A - a clearer table.
  97. GRB 100814A: Swift-XRT refined analysis
  98. Swift/UVOT observations of GRB100814A
  99. GRB 100814A, Swift-BAT refined analysis
  100. GRB 100814A: CQUEAN r- and i-band Observation

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