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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"

21092 results found.

  1. GRB080521(?): detection of possible burst from BAT slew data and XRT ToO
  2. GRB 80516: Swift/UVOT Observations
  3. GRB 080514B: pseudo-z= 1.8 from prompt emission spectrum
  4. GRB 080514B: UVOT Observations
  5. GRB080520: Swift/UVOT observations
  6. GRB 080520: VLT redshift
  7. GRB 080520, GROND observations
  8. GRB 080514B: Further NIR observations
  9. GRB080517: Liverpool Telescope Optical Observations
  10. GRB 080516, GROND 2nd epoch observations
  11. GRB 080516, GROND observations
  12. GRB080430: optical observations
  13. GRB 080516, SMARTS optical/IR observations
  14. GRB 080514B: NOT observations
  15. GRB 080514B : redshift estimation
  16. GRB 080514B: KPNO 4m IR observations
  17. GRB 080514B: slow fading behaviour ?
  18. GRB 080514B, GROND observations
  19. GRB 080514B: Afterglow candidate
  20. GRB 080514B: Watcher observations
  21. GRB 080514B: possible AGILE detection at E>50 MeV
  22. GRB 080514B: SuperAGILE/IPN GRB Localization
  23. GRB080514: REM NIR & Optical Observations
  24. GRB 080319B: Further HST observations and underlying host
  25. GRB 080507: Keck photometry
  26. GRB 080503: Chandra Observation of X-ray Rebrightening or Flattening
  27. GRB 080503: Hubble Space Telescope Imaging
  28. GRB080507: Swift/UVOT followup observations
  29. GRB 080506:Optical observations from HCT
  30. GRB 080503: Fading in continued Gemini imaging
  31. GRB080506: Swift/UVOT observations
  32. GRB 080506: Observations from NOT
  33. GRB 080506: Optical observation with KANATA/TRISPEC
  34. GRB 080503: VLA radio upper limit
  35. GRB 080503: Observations from NOT
  36. GRB 080430: TLS imaging one day after the GRB
  37. GRB 080503: No further optical rebrightening
  38. GRB 080503: Late-time Optical rebrightening (possible mini-SN)
  39. GRB080503: Swift/UVOT Upper Limits
  40. GRB 080430
  41. GRB 080430
  42. GRB 080430
  43. GRB 080503: Optical afterglow candidate and LRIS spectroscopy of the short burst
  44. GRB 080411: Continued Swift Monitoring
  45. GRB 080430: Optical observations
  46. GRB 080430: Shallow decay
  47. GRB080430: RTT150 Optical Observations
  48. GRB080430: Swift/UVOT observations
  49. GRB 080430 - multicolor observations of the afterglow
  50. GRB 080430 optical observations
  51. GRB080430: optical observations
  52. GRB 080430: Hobby-Eberly Telescope Absorption Redshift
  53. GRB 080430: Spectroscopy from CAHA
  54. GRB 080430 - SDSS Pre-Burst Observations
  55. GRB 080430: TAROT Calern observatory optical observations
  56. GRB080426: Observations from CAHA
  57. GRB080426: Swift/UVOT upper limits
  58. Possible GRB 080315: XRT non-detection of afterglow
  59. GRB 080320 : Faulkes Telescope North Observations
  60. GRB 080319A : Liverpool and Faulkes Telescopes Observations
  61. GRB080319A: MAGIC telescope GeV observation
  62. GRB 080420A: ROTSE-III Optical Limits on a possible short burst
  63. GRB080310, BVRcIc field calibration
  64. GRB 080413B: Rapid PROMPT Observations
  65. Swift XRT and UVOT observations of GRB080414
  66. GRB 080413B: Faulkes Telescope South optical afterglow observations
  67. GRB 080413A: Liverpool Telescope and Faulkes Telescope South optical observations
  68. GRB 080413A: MOA-II optical afterglow observations
  69. GRB 080319B: Continued Gemini-N monitoring
  70. GRB 080414: RTT150 optical observations
  71. GRB 080414 Watcher observations
  72. VLA radio observations of GRB 080413B
  73. GRB 080413A: Gemini-South Spectroscopy
  74. GRB 080413B: Gemini-South Spectroscopy
  75. VLA radio observations of GRB 080413A
  76. GRB080413B
  77. GRB 080413a, SMARTS optical/IR afterglow observations
  78. GRB080413A: Swift/UVOT observations
  79. GRB 080413A: VLT/UVES redshift
  80. GRB080413B: REM NIR & Optical Observation
  81. GRB 080413B: GROND detection of afterglow in all bands
  82. GRB 080413: TAROT Calern observatory optical observations
  83. GRB 080413: ROTSE-III Detection of Optical Counterpart
  84. GRB 080411: Swift/UVOT refined analysis
  85. GRB 080411: Swift-XRT Refined Analysis
  86. GRB 080411: VLT redshift
  87. GRB 080411: GROND detection of optical afterglow candidate
  88. GRB080330: MAGIC telescope GeV observation
  89. GRB 080408: GROND detection of optical/NIR afterglow candidate
  90. GRB 080330 optical observations
  91. Swift/UVOT observations of GRB080409
  92. UVOT/Swift Observations of GRB080408
  93. GRB 080409: REM optical/NIR observations
  94. GRB 080319A: Early RAPTOR optical limits
  95. GRB 080319B: HST observations
  96. GRB 080330: RAPTOR detection of prompt optical flash
  97. GRB 080319B: Potential Jet Break Observed by Swift-XRT and UVOT
  98. GRB 080325: optical upper limit
  99. GRB 080330: Prompt PROMPT Observations
  100. GRB080330: optical observations

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