SIMBAD references

1998A&A...333..790Q - Astronomy and Astrophysics, volume 333, 790-794 (1998/5-3)

The correlations between the core dominance parameter and the core and extended powers of quasars.

QIN Y.-P., XIE G.-Z., BAI J.-M., FAN J.-H., ZHENG X.-T. and WU S.-M.

Abstract (from CDS):

We study the correlations between the core dominance parameter R and the core and extended powers Pcore and Pext in the case of quasars with four different samples. In some samples, logPext is highly anti-correlated with logR while logPcore is not at all correlated with logR. This effect seems to be common in the case of quasars when R is not very small. It obviously contradicts the conventional hypothesis of the core and extended emissions of radio sources in accordance with unified schemes and beaming models. Our study also implies that when R becomes larger, the anti-correlation between logPext and logR becomes more obvious while the correlation between logPcore and logR becomes less obvious; when R becomes smaller, the above anti-correlation becomes less obvious while the correlation becomes more obvious. This effect can be interpreted by assuming that, for the lobe-dominated quasars, the emission of the core is beamed and oriented, while for core-dominated quasars, the emission of the core is unbeamed and isotropic.

Abstract Copyright:

Journal keyword(s): quasars: general - radio continuum: galaxies

Simbad objects: 8

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:1998A&A...333..790Q and select 'bookmark this link' or equivalent in the popup menu


2021.03.09-08:05:58

© Université de Strasbourg/CNRS

    • Contact