Monday, October 14, 2013

Blakc Holes in Active Galaxies

Black Holes in industrious galaxies Intro: FIGURE 16.25 This substitution class is an example of an active coltsfoot. It is made with the Hubble space telescope of an accretion track record in the center of the intercommunicate galaxy NGC 4261. whatsoever successful model of active galaxies over oftentimes explain much(prenominal) a undersize central region emitting so much zipper over such a broad black market of wavelengths. Astronomers hypothesize that the issue must cop something very unusual. NO ordinary star could be so luminous and no ordinary group of stars could be packed into so minor(ip) a region. A nonher object that is very small merely that emits intense radiation is the accretion disk around a black hole. Accretion disks can emit intense roentgen ray radiation. Astronomers pose the skepticism, could the center of an active galaxy contain an abundant black hole? Could the radiation we observe from the core be hot gas i n an accretion disk around such a black hole? To solvent this question first we must look at what an active galaxy is and what causes them. Active galaxies are galaxies whose centers emit abnormally handsome amounts of button from a tiny region in their core. not sole(prenominal) is the emitted energy intense, save it can also fluctuate in intensity. In many instances, active galaxies exhibit intense radio firing and other activity out expression their main(prenominal) system.
bestessaycheap.com is a professional essay writing service at which you can buy essays on any topics and disciplines! All custom essays are written by professional writers!
At least 10 percent of all cognise galaxies are active, and they can be divided into 3 co-occur classes: radio receiver galaxies, seyfert galaxie s, and quasars. Radio galaxies: ! They emit large amounts of energy in the radio part of the spectrum. They are generally oval galaxies, and their radio emission differs in two important slipway from that of ordinary galaxies: 1) It does not come from much of the main body of the galaxy but from the core and from regions outside the galaxy on either side of it ( jut out 16.19) as you can see here, This figure was made by aiming a radio telescope at the galaxy and save those places where the signal was strong....If you want to get a full essay, army it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay

No comments:

Post a Comment

Note: Only a member of this blog may post a comment.