The Dynamics of Radio Galaxies and Double–Double Radio Galaxies
نویسندگان
چکیده
منابع مشابه
Seyferts and Radio Galaxies
Observations with Compton Gamma Ray Observatory have provided key insights to the high energy emission mechanisms in Active Galactic Nuclei (AGN) and clearly separate them into a class of Blazars, with apparent non-thermal jet emissions often peaking in the EGRET energy band, and into the Seyfert class with emissions more closely related to the accretion disk presumably energizing the nuclear b...
متن کاملRadio Detection of Radio-quiet Galaxies
We investigate the radio emission of ∼ 185,000 quiescent (optically unclassifiable) galaxies selected from the Sloan Digital Sky Survey (SDSS). By median-stacking FIRST cutouts centered on the optically-selected sources, we are able to reach flux densities down to the 10s of μJy. The quiescent galaxy sample is composed of two subgroups inhabiting vastly different regimes: those targeted for the...
متن کاملGiant Radio Galaxies
Giant radio galaxies (GRGs) are the largest structures associated with single galaxies. Their linear sizes exceed 1 Mpc and so they form the extreme tail of the radio galaxy population. Because they have expanded to such large sizes, GRGs are thought to be the endpoint of radio galaxy evolution and provide important constraints to evolutionary models. They extend well past the environment of th...
متن کاملExtremely Red Radio Galaxies
At least half the radio galaxies at z > 1 in the 7C Redshift Survey have extremely red colours (R−K > 5), consistent with stellar populations which formed at high redshift (z ∼ 5). We discuss the implications of this for the evolution of massive galaxies in general and for the fraction of near-IR-selected EROs which host AGN, a result which is now being tested by deep, hard X-ray surveys. The c...
متن کاملThe Host Galaxies of Radio-loud and Radio-quiet Quasars
I review our knowledge of the properties of the host galaxies of radioloud and radio-quiet quasars, both in comparison to each other and in the context of the general galaxy population. It is now clear that the hosts of radio-loud and radio-quiet quasars with MV < −23.5 are virtually all massive elliptical galaxies. The masses of these spheroids are as expected given the relationship between bl...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Astrophysics and Astronomy
سال: 2011
ISSN: 0250-6335,0973-7758
DOI: 10.1007/s12036-011-9126-0