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SUMMARY:Accurate shifts measurements for AGN multifrequency VLBI maps
DTSTART;VALUE=DATE-TIME:20151202T112800Z
DTEND;VALUE=DATE-TIME:20151202T113100Z
DTSTAMP;VALUE=DATE-TIME:20260420T183330Z
UID:indico-contribution-24@cern.ch
DESCRIPTION:Speakers: Mr. LISAKOV\, Mikhail (ASC LPI)\, Dr. PASHCHENKO\, I
 lya (ASC LPI)\nDetermining relative shift between VLBI maps on different f
 requencies is the typical task arising in spectral index and core shift me
 asurements. This shift can be found using a 2D cross-correlation of the ma
 ps with optically thick regions excluded. However the masking procedure is
  still performed manually\, which can lead to uncertainties due to human d
 riven choice that dominate in the total error budget and can not be proper
 ly estimated. We propose and discuss a method for unique identification of
  the optically thick parts of the jet and calculation of the maps shift.\n
 \nhttps://events.mpifr-bonn.mpg.de/indico/event/4/session/7/contribution/2
 4
LOCATION:Max-Planck-Institut für Radioastronomie\, Bonn\, Germany 0.02
URL:https://events.mpifr-bonn.mpg.de/indico/event/4/session/7/contribution
 /24
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