| | |
| | |
Stat |
Members: 3667 Articles: 2'599'751 Articles rated: 2609
15 February 2025 |
|
| | | |
|
Article overview
| |
|
Dating COINS: Kinematic Ages for Compact Symmetric Objects | N.E. Gugliucci
; G.B. Taylor
; A.B. Peck
; M. Giroletti
; | Date: |
9 Dec 2004 | Journal: | Astrophys.J. 622 (2005) 136-148 | Subject: | astro-ph | Affiliation: | 1 and 2), G.B. Taylor (2 and 3), A.B. Peck , M. Giroletti ( Lycoming College, NRAO, KIPAC, SAO/SMA, CNR | Abstract: | We present multi-epoch VLBA observations of Compact Symmetric Objects (CSOs) from the COINS sample (CSOs Observed In the Northern Sky). These observations allow us to make estimates of, or place limits on, the kinematic ages for those sources with well-identified hot spots. This study significantly increases the number of CSOs with well-determined ages or limits. The age distribution is found to be sharply peaked under 500 years, suggesting that many CSOs die young, or are episodic in nature, and very few survive to evolve into FR II sources like Cygnus A. Jet components are found to have higher velocities than hot spots which is consistent with their movement down cleared channels. We also report on the first detections of significant polarization in two CSOs, J0000+4054 (2.1%) and J1826+1831 (8.8%). In both cases the polarized emission is found in jet components on the stronger side of the center of activity. | Source: | arXiv, astro-ph/0412199 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
|
| |
|
|
|