A shrinking Compact Symmetric Object: J11584+2450?
Astrophysics
2009-11-13 v1
Abstract
We present multi-frequency multi-epoch Very Long Baseline Array (VLBA) observations of J11584+2450. These observations clearly show this source, previously classified as a core-jet, to be a compact symmetric object (CSO). Comparisons between these new data and data taken over the last 9 years shows the edge brightened hot spots retreating towards the core (and slightly to the west) at approximately 0.3c. Whether this motion is strictly apparent or actually physical in nature is discussed, as well as possible explanations, and what implications a physical contraction of J11584+2450 would have for current CSO models.
Cite
@article{arxiv.0806.3955,
title = {A shrinking Compact Symmetric Object: J11584+2450?},
author = {S. E. Tremblay and G. B. Taylor and J. F. Helmboldt and C. D. Fassnacht and T. J. Pearson},
journal= {arXiv preprint arXiv:0806.3955},
year = {2009}
}
Comments
16 pages, 6 figures, 5 tables. Accepted for publication in ApJ