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Galaksit syntyvät sisältä ulos päin / kooste 2

 
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Joined: 02 Jan 2007
Posts: 1930

PostPosted: 13.01.2018 12:30    Post subject: Galaksit syntyvät sisältä ulos päin / kooste 2 Reply with quote

Varhaisesta universumista löytyi liian suuri musta aukko

"Supermassiivinen musta aukko sijaitsee galaksissa, jonka valo on matkannut avaruuden halki noin 13 miljardin vuoden ajan. On epäselvää, kuinka aukko on voinut kasvaa suuriin mittoihinsa niin varhain.

"Jos aloitat ison tähden kaltaisella siemenellä ja annat sen kasvaa maksiminopeudella alkuräjähdyksestä lähtien, et voi koskaan tuottaa mitään 800 miljoonan Auringon massaista", sanoo Robert Simcoe Massachusettsin teknologisesta instituutista."

https://www.avaruus.fi/uutiset/tahdet-sumut-ja-galaksit/varhaisesta-universumista-loytyi-liian-suuri-musta-aukko.html

""Universumi oli suurin piirtein 50/50. Se on hetki, jolloin ensimmäiset galaksit tulivat esiin neutraalin kaasun kuoristaan ja alkoivat loistaa tietään ulos", Simcoe sanoo. "Tämä on kaikkein tarkin mittaus tuosta ajasta ja todellinen merkki aikakaudesta, jolloin ensimmäiset tähdet syttyivät.""

MrNewTime

Mustien aukkojen magneettikentät ovat luultua säyseämpiä

""Kysymys kuuluu, kuinka se tehdään?", Eikenberry sanoo. "Yllättävän matalat mittauksemme antavat uudet rajat teoreettisille malleille, jotka aiemmin keskittyivät siihen, kuinka voimakkaat magneettikentät kiihdyttävät ja suuntaavat suihkuja. Emme odottaneet tätä, joten se muuttaa paljon siitä mitä luulimme tietävämme.""

https://www.avaruus.fi/uutiset/tahdet-sumut-ja-galaksit/mustien-aukkojen-magneettikentat-ovat-luultua-sayseampia.html

Kaikki mitä olette luulleet, todetaan luuloksi!!!

MrNewTime

Astronomers shed light on formation of black holes and galaxies

https://m.phys.org/news/2017-12-astronomers-formation-black-holes-galaxies.html

"Supermassive black holes are captivating," says lead author Shelley Wright, a University of California San Diego Professor of Physics. "Understanding why and how galaxies are affected by their supermassive black holes is an outstanding puzzle in their formation."

MrNewTime

Cosmic filament probes our galaxy's giant black hole

https://m.phys.org/news/2017-12-cosmic-filament-probes-galaxy-giant.html

"Each of the scenarios being investigated would provide intriguing insight if proven true. For example, if the filament is caused by particles being ejected by Sgr A*, this would reveal important information about the magnetic field in this special environment, showing that it is smooth and orderly rather than chaotic."

MrNewTime

A century of galaxy discrimination revealed by giant European astronomy survey

https://m.phys.org/news/2017-12-century-galaxy-discrimination-revealed-giant.html


"Most of the galaxies detected in the Herschel ATLAS, however, fall in the 'green valley' between the red and the blue galaxies. According to Professor Steve Eales, of the University's School of Physics and Astronomy: "This discovery has overturned all the current theories for how galaxies evolve. Our results show that there really is only a single galaxy class. There is no longer any need for a violent process that moves a galaxy rapidly from one class to the other. Herschel has shown that galaxy evolution is actually quite a gentle process.""

MrNewTime

Astronomers shed light on formation of black holes and galaxies

""We study supermassive black holes in the very early universe when they are actively growing by accreting massive amounts of gaseous material," says Wright. "While black holes themselves do not emit light, the gaseous material they chew on is heated to extreme temperatures, making them the most luminous objects in the universe."

The UC San Diego team's research revealed that the winds blow out through the entire galaxy and impact the growth of stars.

"This is remarkable that the supermassive black hole is able to impact stars forming at such large distances," says Wright.

Today, neighboring galaxies show that the galaxy mass is tightly correlated with the supermassive black hole mass. Wright's and Vayner's research indicates that 3C 298 does not fall within this normal scaling relationship between nearby galaxies and the supermassive black holes that lurk at their center. But, in the early universe, their study shows that the 3C 298 galaxy is 100 times less massive than it should be given its behemoth supermassive black hole mass.

This implies that the supermassive black hole mass is established well before the galaxy, and potentially the energetics from the quasar are capable of controlling the growth of the galaxy."


https://m.phys.org/news/2017-12-astronomers-formation-black-holes-galaxies.html


Galaksit syntyvät sisältä ulos päin.
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