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 ~10**4 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.
@article{arxiv.astro-ph/0203338,
title = {Milli-arcsecond scale Rotation Measure in the CSS Quasars 0548+165 and 1524-136},
author = {F. Mantovani and W. Junor and R. Ricci and D. J. Saikia and C. Salter and M. Bondi},
journal= {arXiv preprint arXiv:astro-ph/0203338},
year = {2009}
}
Comments
Accepted by Astronomy and Astrophysics; plain tex, 11 pages, 7 figures