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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"

21984 results found.

  1. GRB 080430: optical observations
  2. GRB 080603B: Swift/UVOT detection of the afterglow
  3. GRB 080603A: Swift/UVOT detection of the afterglow
  4. GRB080603B: RTT150 optical observations, break in light curves
  5. GRB 080604: Early Super-LOTIS Observations
  6. GRB 080516: TAROT La Silla observatory optical observations
  7. GRB 080603B: BOOTES2/TELMA optical observations
  8. GRB 080603B: TAROT Calern observatory detection of a plateau in the light curve
  9. GRB080603: Super-LOTIS detection of Optical Counterpart
  10. GRB 080603: Gemini-North redshift
  11. SGR 1627-41: Chandra/RXTE/Swift Observations Scheduled
  12. GRB 080602: Swift-XRT refined analysis
  13. GRB 080602: NOT R-band upper limit
  14. GRB 080523: afterglow confirmation and redshift constraints
  15. GRB 080524: Swift XRT and UVOT analysis
  16. GRB 080503: 2nd Epoch Chandra X-ray Observations
  17. GRB 080520: VLT host detection
  18. GRB 080523: VLT optical observations
  19. Swift/UVOT observations of GRB 080523
  20. GRB080521(?): detection of possible burst from BAT slew data and XRT ToO
  21. GRB 80516: Swift/UVOT Observations
  22. GRB 080514B: pseudo-z= 1.8 from prompt emission spectrum
  23. GRB 080514B: UVOT Observations
  24. GRB080520: Swift/UVOT observations
  25. GRB 080520: VLT redshift
  26. GRB 080520, GROND observations
  27. GRB 080503: Further HST imaging
  28. GRB 080514B: Further NIR observations
  29. GRB080517: Liverpool Telescope Optical Observations
  30. GRB 080517: Swift detection of a burst
  31. GRB 080516, GROND 2nd epoch observations
  32. GRB 080516, GROND observations
  33. GRB080430: optical observations
  34. GRB 080516, SMARTS optical/IR observations
  35. GRB 080514B: NOT observations
  36. GRB 080514B : redshift estimation
  37. GRB 080514B: KPNO 4m IR observations
  38. GRB 080514B, GROND observations
  39. GRB 080514B: Afterglow candidate
  40. GRB 080514B: Watcher observations
  41. GRB 080514B: possible AGILE detection at E>50 MeV
  42. GRB 080514B: SuperAGILE/IPN GRB Localization
  43. GRB080514: REM NIR & Optical Observations
  44. GRB 080319B: Further HST observations and underlying host
  45. GRB 080507: Keck photometry
  46. GRB 080503: Chandra Observation of X-ray Rebrightening or Flattening
  47. GRB 080503: Hubble Space Telescope Imaging
  48. GRB080507: Swift/UVOT followup observations
  49. GRB 080506:Optical observations from HCT
  50. GRB 080507: GRB localization by SuperAGILE
  51. GRB 080503: Fading in continued Gemini imaging
  52. GRB080506: Swift/UVOT observations
  53. GRB 080506: Observations from NOT
  54. GRB 080506: Optical observation with KANATA/TRISPEC
  55. GRB 080503: VLA radio upper limit
  56. GRB 080503: Observations from NOT
  57. GRB 080430: TLS imaging one day after the GRB
  58. GRB 080503: No further optical rebrightening
  59. GRB 080503: Late-time Optical rebrightening (possible mini-SN)
  60. GRB080503: Swift/UVOT Upper Limits
  61. GRB 080430
  62. GRB 080430
  63. GRB 080430
  64. GRB 080503: Optical afterglow candidate and LRIS spectroscopy of the short burst
  65. GRB 080411: Continued Swift Monitoring
  66. GRB 080430: Optical observations
  67. GRB 080430: Shallow decay
  68. GRB080430: RTT150 Optical Observations
  69. GRB080430: Swift/UVOT observations
  70. GRB 080430 - multicolor observations of the afterglow
  71. GRB 080430 optical observations
  72. GRB080430: optical observations
  73. GRB 080430: Hobby-Eberly Telescope Absorption Redshift
  74. GRB 080430: Spectroscopy from CAHA
  75. GRB 080430 - SDSS Pre-Burst Observations
  76. GRB 080430: TAROT Calern observatory optical observations
  77. GRB960202B - on the association with SN 1996cr
  78. GRB080426: Observations from CAHA
  79. GRB080426: Swift/UVOT upper limits
  80. Possible GRB 080315: XRT non-detection of afterglow
  81. GRB 080320 : Faulkes Telescope North Observations
  82. GRB 080319A : Liverpool and Faulkes Telescopes Observations
  83. GRB 080420A: ROTSE-III Optical Limits on a possible short burst
  84. GRB 080413B: Rapid PROMPT Observations
  85. Swift XRT and UVOT observations of GRB080414
  86. GRB 080319B: Jet Break, Energetics, Supernova
  87. GRB 080413B: Faulkes Telescope South optical afterglow observations
  88. GRB 080413A: Liverpool Telescope and Faulkes Telescope South optical observations
  89. GRB 080413A: MOA-II optical afterglow observations
  90. GRB 080319B: Continued Gemini-N monitoring
  91. GRB 080414: RTT150 optical observations
  92. GRB 080414 Watcher observations
  93. VLA radio observations of GRB 080413B
  94. GRB 080413A: Gemini-South Spectroscopy
  95. GRB 080413B: Gemini-South Spectroscopy
  96. VLA radio observations of GRB 080413A
  97. GRB080413B
  98. GRB 080413a, SMARTS optical/IR afterglow observations
  99. GRB080413A: Swift/UVOT observations
  100. GRB 080413A: VLT/UVES redshift

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