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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 ...

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:  ...

astronomy.nju.edu.cn/~lixd/GA/AT4/AT425/HTML/AT42502.htm

This active spiral galaxy resides about 24 Mpc away. ... Indeed, the brightest Seyfert nuclei are 10 times more energetic than the entire Milky Way. ... These rather rapid fluctuations lead us to conclude that the source of energy emissions ... Figure 25.4 Centaurus A Radio Lobes Lobe-radio galaxies, such as Centaurus A ...

www.thoughtco.com/active-galaxies-and-quasars-3073374

What causes these active galaxies to release this energy? ... Exploring the Most Energetic Sources of Radiation in the Universe ... black hole will find itself in the middle of an enormous galaxy surrounded by stars, gas and dust. ... The jets terminate in hugh plumes called radio lobes, and these structures can sometimes be ...

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.

www.castlerock.wednet.edu/HS/stello/Astronomy/TEXT/CHAISSON/BG316/HTML/BG316EOC.htm

In a lobe radio galaxy, the energy comes from enormous radio lobes that lie far beyond ... Quasars, or quasi-stellar objects, are starlike radio sources with spectra ... black hole responsible for energy production in the active galaxy M87 is thought to ... The fact that a typical quasar would consume an entire galaxy's worth of ...

www.nasa.gov/mission_pages/herschel/news/herschel20130507.html

May 7, 2013 ... The supermassive black hole at the core of our Milky Way galaxy is gobbling up ... at high energies than the Andromeda galaxy's entire black hole population. ... In 2013, NASA's Swift satellite reported it as a high-energy source, but its .... which fired off jets of matter, forming the twin lobes of hot gas seen in ...

adsabs.harvard.edu/full/1976ARA%26A..14..447D

2 In what follows we consider as extended any extragalactic radio source whose overall ... In general they relate to what are thought to be the major means of energy ... In many cases a QSO or galaxy can be seen within this region; such a ..... optical condensations and filaments in the northeast radio lobe of Centaurus A.

cosmos.phy.tufts.edu/~rwillson/astronomy/astro111_eaa-seyferts.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.

www.science20.com/news_articles/what_universe_made_active_galaxies_and_mystery-82471

Sep 9, 2011 ... "More than half of these sources are active galaxies, whose massive black holes ... Until recently, all of the Crab's high-energy emissions were thought to be the ... It resides near the populous midplane of our galaxy, which increases ... region around the galaxy that corresponds to the radio-emitting lobes.