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www.astro.ufl.edu/~lada/ast1002/homework7.html

What perception of the Milky Way Galaxy did astronomer have in the early part of this century? a) They believed ... In a lobe radio galaxy, the ultimate energy source for the entire radio source is thought to reside: a) In the lobes. ... Why is the energy source of Seyfert galaxies thought to be extremely compact? a) Their energy ...

archive.ncsa.illinois.edu/Cyberia/NumRel/RelUniverse2.html

Nov 8, 1995 ... Some reside in our own galaxy -- The Milky Way. ... The Ultimate Singularity ... It surrounds a neutron star whose radio emissions pulsate 30 times per second. ... part of their rotational energy gets converted into gravitational radiation. ... Here's an optical image of the powerful X-ray source Cygnus X-1.

citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.533.9721&rep=rep1&type=pdf

Mar 2, 2006 ... finding Seyfert galaxies amongst the more normal galaxy population. ... hole provides the ultimate energy source, as gas falls inwards via ... directions to light up gas and dust residing much further out in the .... The entire NLR and associated radio .... Seyferts using a property that is not thought to depend on.

adsabs.harvard.edu/full/1995RvMA....8..201C

Giant elliptical galaxies are now thought to host the most massive centers in the ... Investigations of the role of magnetic fIelds in the physics of Active Galactic .... should reside in luminous spiral galaxies and the radio-loud sources should be .... Here U is the energy stored in the lobes, taken from equipartition energy Ueq,  ...

www.cfa.harvard.edu/~ejchaisson/cosmic_evolution/docs/fr_1/fr_1_gal4.html

Observations during the 1990s imply that black holes reside in the hearts of ... How can an entire star (or larger) shrink to the size of an atom (or smaller), ... FIGURE 2.6 – Earth being squeezed by a gigantic vise—just a thought! ..... And in the center of the ring is an intense radio source—the dynamical nucleus of our Galaxy.

www.flashcardmachine.com/astronomy126.html

Apr 6, 2017 ... The most elongated of the elliptical galaxies are Hubble's class: ... Why is the energy source of Seyfert galaxies thought to be extremely compact? .... In a lobe radio galaxy, the ultimate energy source for the entire galaxy is thought to reside:  ...

www.nap.edu/read/12800/chapter/5

Read chapter 3 The Radio Astronomy Service: Radio observations of the cosmos ... and ultimate fate of the universe, the distribution of matter and primordial energy in ... 475-488 in The Nuclei of Normal Galaxies, Lessons from the Galactic Center, .... its origin in the optical wave band to the entire electromagnetic spectrum.

www.astro.bas.bg/~petrov/galaxies_files/agn.html

As such, the nucleus can also be thought of as the "bottom" of the galaxy: gas ... A small minority (5-10%) of these sources are the strong radio sources that originally ..... because the jets appear to be the source of energy feeding the lobes. .... comparable to or greater than that of an entire galaxy, and substantial power ...

www.encyclopedia.com/science/science-magazines/astronomy-and-space-science-pulsars-quasars-and-distant-questions

These new objects were dubbed pulsars, for “pulsating radio sources.” .... This is now thought to be the energy source of quasars. .... masses of material per year for a billion years would be the equivalent mass of an entire galaxy. ... to find evidence that supermassive black holes truly did reside in the centers of galaxies .