Polarization Limits in Compact Symmetric Objects
| dc.creator | Peck, A. B. | |
| dc.creator | Taylor, G. B. | |
| dc.date | 2000-09-22 | |
| dc.date.accessioned | 2026-07-07T01:55:36Z | |
| dc.date.available | 2026-07-07T01:55:36Z | |
| dc.description | We present results of multifrequency polarimetric VLBA observations of 34 compact radio sources. The observations are part of a large survey undertaken to identify CSOs Observed in the Northern Sky (COINS). Based on VLBI continuum surveys of ~2000 compact radio sources, we have defined a sample of 52 CSOs and CSO candidates. Positive identification of CSOs is contingent upon acquiring multi-frequency observations in order to correctly identify the core of the source, which is expected to have a strongly inverted spectrum. We also expect CSOs to exhibit very little polarized flux. Despite the fact that synchrotron emission is intrinsically highly polarized, less than 0.5% fractional polarization is seen in low resolution studies of CSOs at frequencies up to 5 GHz. One possible explanation for the low observed linear polarization from CSOs is that their radiation is depolarized as it passes through a magnetized plasma associated with a circumnuclear torus. This interpretation is consistent with the unified scheme of AGN, and also with the recent detections of free-free and HI absorption in CSOs. Here we present limits on the polarized flux density at 8.4 GHz and ~1 mas resolution for 21 CSOs and candidates in the COINS sample. | |
| dc.description | 2 pages, for "Proceedings of the 5th EVN Symposium", Eds. J. Conway, A. Polatidis & R. Booth, Onsala Space Observatory, Chalmers Technical University, Gothenburg, Sweden (2000) | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0009372 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0009372 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/1712 | |
| dc.subject | Astrophysics | |
| dc.title | Polarization Limits in Compact Symmetric Objects | |
| dc.type | text |