C reative
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Higgs
CPH Theory is based on Generalized light velocity from energy into mass.
CPH Theory in Journals
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Which Comes First: Galaxy or Black Hole?
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Written by Nancy Atkinson
Enlarge VLA image (right) of gas in young galaxy seen as it was when the Universe was only 870 million years old. Image: NRAO/AUI/NSF, SDSS
Do galaxies form first and then a black hole
springs up in the center, or possibly, do galaxies form around
an already existing black hole? That's the cosmic
chicken-and-the-egg problem astronomers have been trying to
figure out. The answer? "It looks like the black holes form
before the host galaxy, and somehow grow a galaxy around them.
The evidence is piling up," said Chris Carilli, of the National
Radio Astronomy Observatory (NRAO), speaking at today's press
conference at the American Astronomical Society's meeting. By
observing with the Very Large Array radio
telescope and the
Plateau de Bure Interferometer in France at sub-kiloparsec
resolution, the researchers have been "weighing" the earliest
galaxies, ones that formed within a billion years of the Big
Bang. "This constant ratio indicates that the black hole and the bulge affect each others' growth in some sort of interactive relationship," said Dominik Riechers, of Caltech. "The big question has been whether one grows before the other or if they grow together, maintaining their mass ratio throughout the entire process." "We finally have been able to measure black-hole and bulge masses in several galaxies seen as they were in the first billion years after the Big Bang, and the evidence suggests that the constant ratio seen nearby may not hold in the early Universe. The black holes in these young galaxies are much more massive compared to the bulges than those seen in the nearby Universe," said Fabian Walter of the Max-Planck Institute for Radioastronomy (MPIfR) in Germany. "The implication is that the black holes started growing first." The next challenge is to figure out how the black hole and the bulge affect each others' growth. "We don't know what mechanism is at work here, and why, at some point in the process, the 'standard' ratio between the masses is established," Riechers said. New telescopes now under construction will be key tools for unraveling this mystery, Carilli explained. "The Expanded Very Large Array (EVLA) and the Atacama Large Millimeter/submillimeter Array (ALMA) will give us dramatic improvements in sensitivity and the resolving power to image the gas in these galaxies on the small scales required to make detailed studies of their dynamics," he said. "To understand how the Universe got to be the way it is today, we must understand how the first stars and galaxies were formed when the Universe was young. With the new observatories we'll have in the next few years, we'll have the opportunity to learn important details from the era when the Universe was only a toddler compared to today's adult," Carilli said. Carilli, Riechers and Walter worked with Frank Bertoldi of Bonn University; Karl Menten of MPIfR; and Pierre Cox and Roberto Neri of the Insitute for Millimeter Radio Astronomy (IRAM) in France. Source: NRAO, AAS Press Conference
Source: http://www.universetoday.com/2009/01/07/which-comes-first-galaxy-or-black-hole/
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