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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"

43129 results found.

  1. GRB 130609B: Swift/UVOT Observations
  2. Konus-Wind observation of GRB 130609B
  3. GRB 130606B: Swift/UVOT Upper Limit
  4. GRB 130610A: LOAO BVR Observation
  5. GRB 130610A: Swift-XRT refined Analysis
  6. GRB 130609B: Swift-XRT refined Analysis
  7. GRB 130610A: Enhanced Swift-XRT position
  8. GRB 130608A: Further Swift-BAT analysis
  9. GRB 130610A: VLT/UVES redshift
  10. GRB 130609B: Enhanced Swift-XRT position
  11. GRB 130610A: P60 Observations
  12. GRB 130610A: PAIRITEL NIR Afterglow Observations
  13. GRB 130610A: Skynet/PROMPT detection of the optical afterglow
  14. GRB 130610A - Liverpool Telescope Optical Afterglow Confirmation
  15. GRB 130610A: Swift detection of a burst with an optical counterpart
  16. GRB 130609B: Swift detection of a burst with an optical counterpart
  17. GRB 130606A - Liverpool Telescope and Faulkes Telescope North optical observations
  18. GRB 130609A: Fermi GBM observation
  19. GRB 130608A: Swift-XRT refined Analysis
  20. GRB 130609A: Swift-XRT refined Analysis
  21. GRB 130608A: RATIR Optical and NIR Observations
  22. GRB 130609A: Enhanced Swift-XRT position
  23. GRB 130608A: Swift-BAT refined analysis
  24. GRB 130608A: Enhanced Swift-XRT position
  25. GRB 130609A: RATIR Optical and NIR Observations
  26. GRB 130609A: P60 nondetection
  27. GRB130608A: BOOTES-2/TELMA upper limits
  28. GRB 130609A: Swift detection of a burst
  29. GRB 130608A: Swift detection of a burst
  30. GRB 130606A: Continued Skynet/PROMPT observations
  31. Swift Trigger 557674 was due to an onboard position error
  32. GRB 130606A: Continued RATIR Optical and NIR Monitoring
  33. GRB 130606B: AGILE-MCAL observation
  34. GRB 130606B: RATIR Optical and NIR Observations
  35. Swift Trigger 557674 is a probable new Galactic transient
  36. GRB 130606B: Swift-XRT observations
  37. GRB 130606A, Swift-BAT refined analysis
  38. GRB 130606A: TAROT Calern observatory early optical observations
  39. GRB 130606A: EVLA detection
  40. GRB 130606A: VLT/X-shooter redshift confirmation
  41. GRB 130606A: Skynet/PROMPT detection of the optical afterglow
  42. GRB 130606A: Swift/UVOT Upper Limits
  43. GRB 130603A: AAO optical observations
  44. GRB 130606A: Swift-XRT refined Analysis
  45. GRB 130606A: Enhanced Swift-XRT position
  46. Konus-Wind observation of GRB 130605A
  47. Konus-Wind observation of GRB 130606A
  48. GRB 130606A: GROND Detection of the Optical/NIR Afterglow
  49. Trigger 557640: Swift detection of burst from SGR J1745-29
  50. GRB 130606A: P60 Observations
  51. Konus-Wind observation of GRB 130606B
  52. GRB 130606A: PAIRITEL NIR Afterglow Observations
  53. GRB 130606B; Fermi GBM observation
  54. GRB 130606A: LOAO IZY Observation
  55. GRB 130606A: RATIR r'-band Dropout
  56. GRB 130606A: MMT Spectroscopy
  57. GRB 130606A:T100 observations
  58. GRB 130606A: 10.4m GTC refined redshift z = 5.91
  59. GRB 130606B: Fermi-LAT detection of a bright hard burst
  60. GRB 130606A: Errata of J and Ks magnitudes in GCN 14784
  61. GRB 130606A: Errata of J and Ks magnitudes in GCN 14784
  62. GRB130606A: Montarrenti Observatory afterglow detection
  63. GRB 130606A: 10.4m GTC spectroscopy indicates z = 6.1
  64. Virtual Telescope observations of GRB 130606A
  65. GRB 130605A: Swift-XRT refined Analysis
  66. GRB 130605A: Swift-BAT refined analysis
  67. Swift Trigger 557466 is not astrophysical
  68. GRB 130606A - Liverpool Telescope Optical Afterglow Confirmation
  69. GRB 130606A: IRSF NIR Observation
  70. GRB 130606A: NOT afterglow detection
  71. GRB 130606A: optical afterglow with BOOTES-2/TELMA and 1.23m CAHA
  72. GRB 130606A: Swift detection of a burst
  73. GRB 130605A: Swift/UVOT Detection
  74. GRB 130604A: Swift-BAT refined analysis
  75. GRB 130605A: Continued Skynet/PROMPT observations
  76. GRB 130605A: TAROT La Silla observatory optical decay
  77. GRB 130605A: Skynet/PROMPT detection of a fading afterglow
  78. GRB 130605A: TAROT La Silla observatory optical detection of the afterglow
  79. GRB 130605A: GROND afterglow candidate
  80. GRB 130605A: Swift detection of a burst
  81. GRB 130603B: rest-frame energetics in gamma-rays
  82. Konus-Wind observation of GRB 130603B
  83. GRB 130603B: MASTER-Net early observations and optical sloap limit
  84. GRB 130603B: AMI-LA 15GHz observations
  85. GRB 130604A: Swift/UVOT Upper Limits
  86. Swift Trigger 557466 is probably not real.
  87. GRB 130604A: Swift-XRT refined Analysis
  88. GRB 130604B: Fermi GBM detection
  89. GRB 130603B: RATIR Optical and NIR Observations
  90. GRB 130604A: Enhanced Swift-XRT position
  91. GRB 130604A: Gemini North Spectroscopy
  92. GRB 130603B: P60 Observations
  93. GRB 130604A: MITSuME Okayama upper limits
  94. GRB130603B: Swift/UVOT detection
  95. GRB 130604A: further ISON-NM optical observation
  96. GRB 130603B: VLT/X-shooter redshift confirmation
  97. GRB 130604A: ISON-NM optical upper limit
  98. GRB 130603A: MITSuME Akeno Optical observation
  99. GRB 130604A: KAIT optical upper limit
  100. GRB 130604A: P60 optical afterglow candidate

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