Publication Date:
2002
abstract:
Two Compact Steep-spectrum Sources (CSSs), 0548+165 and 1524-136, chosen
from a list of CSSs with polarization percentages that decrease with
decreasing frequency and high rotation measure values (RM>450 rad m-2) on
arcsecond scales, were observed with the VLBA at 4.9 and 8.4 GHz. RM values
up to ~104 rad m-2 were found in several regions along the jets in both
sources. We suggest that a thin screen of magneto-ionic material with about
1 kpc thickness is responsible for these high RMs. The observed
depolarization may be due to beam depolarization and/or inhomogeneities in
the magnetic field.
Iris type:
01.01 Articolo in rivista