Is this true or false: The term "active galaxy" refers to a galaxy that's undergoing rapid evolutionary change in shape, such as spiral to elliptical.?
2006-11-18 21:18:49 · 2 answers · asked by MD 1 in Science & Mathematics ➔ Astronomy & Space
It is false. An "active" galaxy is one which is emitting larger than average amounts of radiation, generally in the infrared and radio frequencies. It could also apply to one active in the X-ray spectrum. The causes for these emissions can be several: The effects of two galaxies in collision(when they collide, the stars don't collide but the clouds of gas and dust do) A galaxy with a large and growing black hole at its center, A galaxy which is undergoing a large amount of new stellar formation ( now thought to be caused by gravity waves in the gas and dust clouds.
2006-11-19 09:24:17 · answer #1 · answered by JIMBO 4 · 1⤊ 0⤋
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2016-12-10 11:40:20 · answer #2 · answered by Anonymous · 0⤊ 0⤋