Generally, a active galaxy means gravitation-ally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter. Active Galaxies are composed with stars, dust and dark matter, all held together by gravity. Still anyone including astronomers are not explained exactly how galaxies formed. Most popular argument is space was made up almost entirely of hydrogen and helium.
Our earth also located in an active called Milky Way Galaxy. All the stars we see in the night sky are in our own Milky Way Galaxy. Our active galaxy is called the Milky Way because it appears as a milky band of light in the sky when you see it in a dark area. The word galaxy is coming from the Greek galaxies, literally “milky”, base for the Milky Way.
NASA confirmed that it has found an active galaxy far away. This active galaxy looks eerily reminiscent of a TIE fighter from “Star Wars.” This active galaxy, named as “TXS 0128+554” and it is 500 million light-years away in the constellation Cassiopeia. TXS 0128+554 is considered as an active galaxy, as it emits lighter than all its stars together. In 2015, astronomers found TXS 0128+554 was a “faint source of gamma rays,” but it wasn’t until now that they went in for a closer look.
According to NASA announcement, they zoomed in a million times closer on the galaxy using the [Very Long Baseline Array’s] radio antennas and charted its shape over time,” A study had done by author “Matthew Lister” saying that, “The first time I saw the results, I immediately thought it looked like Darth Vader’s TIE fighter spacecraft from ‘Star Wars: Episode IV – A New Hope.’
Active galaxy – UGC 6093
This is an image of active galaxy named UGC 6093, captured by the NASA/ESA Hubble Space Telescope’s Wide Field Camera 3 (WFC3). UGC 6093 is something known as a barred spiral galaxy as it can be easily seen. It is classified as an active galaxy, which means that it hosts an active galactic nucleus, or AGN: a compact region at a galaxy’s center within which material is dragged towards a supermassive black hole. This active galaxy has beautiful arms that swirl outwards from a bar slicing through the galaxy’s center.
Active galaxies such as UGC 6093 can be million times brighter than masers found in galaxies like the Milky Way.
Specifications of Active galaxy UGC 6093
Absolute magnitude: -22.4
Apparent size (V): 0.94′ × 0.76′
Apparent magnitude (V): 14.7
Active galaxy UGC 6093 is a barred spiral galaxy located nearly 500 million light years away from Earth in the constellation of Leo. As this black hole devours the surrounding matter it emits intense radiation, causing it to shine brightly. Anyway, this UGC 6093 is still more exotic. The active galaxy essentially acts as a giant astronomical laser that spews out light at microwave, but not visible.
Features of active galaxies
These are galaxies with a small core of emission embedded at the center of an otherwise typical galaxy. This core is generally highly variable and heavy bright compared to the rest of the galaxy.
Main types of active galaxies
There may be at least three types of active galaxies, including
Energy source of an active galaxy
There is a supermassive black hole, which can introduce as heart of active galaxy. The most probable energy source is the accretion of gas onto this supermassive black hole.
An inactive galaxy
An anemic galaxy is a type of spiral galaxy characterized by a low contrast between its spiral arms and its disk.