Evolution of source positions.
Position of some sources were estimated for each 24 hours VLBI experiment
independently. Plot of evolution of position of some sources with respect
to the average value reveals peculiarities. I believe they are related with
changes in source structures which are still not modeled at all.
Units are time in years and position in milliarcseconds for both right
ascension and declination.
- 0711+356
Plot of
right ascension and
declination for 1987-1998
Source with very fast but non-linear visible proper motion.
- 0735+178
Plot of
right ascension and
declination for 1990-1999.2
- 0923+392 (4C39.25)
Plot of
right ascension and
declination for 1979.8-1999.5
- 0953+254 (OK290)
Plot of
right ascension and
declination for 1990-1999.3
- 1144+402
Plot of
right ascension and
declination for 1982-1999.5
- 2200+420 (VR422201)
Plot of
right ascension and
declination for 1996-1999.5
A pit in the plot of declination is especially exciting.
Back to Leonid Petrov's discussion page.
Last update: 07-JUL-99 20:48:32