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How can astronomers tell whether a black hole exists in the center of a galaxy?
Wiki User
∙ 13y ago
Astronomers believe there may be a black hole at the center of our galaxy because of a compelling body of evidence supporting the idea. Recent observations of the behavior of stars at the center of our Milky Way show them orbiting an object which, based on the stars' velocities, indicates its gravitation pull on them is caused by an object something that weighs in the vicinity of four million solar masses. The point of the nearest approach (perigee) in the orbit of the closest of these stars misses it at a distance which sets the upper limit of the size of the object. Given that nothing else in our physical theory could be so small yet so massive, the best fit is a supermassive black hole.
Wiki User
∙ 8y ago
Astronomers can detect a black hole's presence in the center of a galaxy by observing stars and gas orbiting around an invisible central point, showing the influence of a massive object. They can also study the emission of radiation and energy coming from the region, along with detecting gravitational waves produced by the black hole's activity.
Wiki User
∙ 13y agoHawking Radiation would be one of the newer ways to detect black holes. Other than this, the only other way to detect a black hole is from the effect on its surroundings.
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What is the distant galaxy with a black hole in its center?
Timing is everything as astronomers are making discovers all the time. As of an article posted in March of 2012 - Galaxy J1120+0641, containing the most distant supermassive black hole known to science, is so far away that light from it takes over 13 billion years to reach our planet. This means the light astronomers see from this galaxy is just 740 million years after the Big Bang.
What led astronomers to believe that this galaxy contained a black hole?
Astronomers observed fast-moving stars near the center of the galaxy, indicative of a massive object exerting gravitational influence. They also detected intense radiation and energetic jets emanating from the center, characteristic of a supermassive black hole accreting material. Additional evidence came from studying the motion of gas and stars close to the center, revealing the presence of a compact, extremely massive object.
Does M65 galaxy have a black hole?
Yes, the M65 galaxy is thought to have a supermassive black hole at its center, like many other large galaxies. This black hole likely plays a crucial role in shaping the galaxy's properties and evolution.
How do astronomers determine the speed at which a galaxy is moving?
Astronomers determine the speed at which a galaxy is moving by measuring the redshift of light coming from the galaxy. The redshift is caused by the Doppler effect, which shifts the wavelength of light depending on the motion of the source. By analyzing the redshift, astronomers can calculate the velocity of the galaxy relative to Earth.
Why astronomy course is called star?
thank you 4 that easy question........because all astronomers are searching galaxy....am i rigth?...and the stars are in the galaxy.....so their cousre called.......star....
Why galaxy exists?
Galaxy exists because stars and nebulae exists.
What do astronomers called your galaxy?
The Milky Way Galaxy.
Quasar in a sentence?
A quasar is a celestial object located at the center of a galaxy, emitting intense radiation and believed to be powered by a supermassive black hole.
In what part is a black hole in the universe?
Astronomers believe that black holes exist in the center of every universe. They even think that there may be a black hole in the center of our galaxy, the Milky Way
How can astronomers redshift a background galaxy that is masked out due to being close to the bright foreground galaxy?
Wavelengths is what allows astronomers redshift a background galaxy that is covered up. This is due to being close to the foreground galaxy.
What is the galaxy in which your solar system exists?
our solar system exists in barred spiral galaxy
How do astronomer study the center of milky way galaxy?
They use powerful devices such as the Hubble Space Telescope, and infrared and ultraviolet waves. Astronomers also use the direction of the path of light, gamma rays, and beta particles to study the center of our spiral-shaped Milky Way Galaxy.
Suppose astronomers discover a galaxy that contains only old stars.What type of galaxy is it likely to be?
An elliptical galaxy
Do most astronomers believe that earth is in a barreled spiral galaxy?
duh were living in a barred galaxy
What evidence now exists for a super massive black hole at the center of your galaxy?
very rapid motion of matter close to the nucleus of the galaxy, requiring a very massive body to hold it in orbit
Who visited the galaxy or did anyone studied about the galaxy?
It's not possible that we could cross a galaxy. But astronomers study galaxies with huge telescopes.
Is there any black hole in the galaxy Satan A?
I don't think there is a galaxy called "Satan A"; at least, not as a standard name, generally accepted by astronomers. On the other hand, most larger galaxies have a supermassive black hole at its center, and it can be expected that any galaxy has several stellar black holes.
