Torque caused by/due to a galaxy's spin

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The discussion explores the causes of a galaxy's spin and the potential for calculating its torque, which relates to the force and angular momentum of galaxies. It highlights that torque is linked to the transfer of angular momentum over time and that gravitational waves can influence the movement of distant objects. The interaction between galaxies, especially during collisions, can produce torque effects. An example is provided of a star escaping the Milky Way due to its close encounter with a black hole, illustrating the concept of torque in action. Ultimately, the torque of a galaxy arises from interactions with other galaxies rather than from the galaxy itself.
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Well today in class, we were talking about galaxies and orbits and the radius of black holese and how every black hole is at the center of a galaxy. Then i got to thinking, what causes the spin of a galaxy, and this led me to thinking, is there a way to find out the torque of a spinning galaxy? I'm sure it would have to do with force and angular momentum of each galaxy, but I couldn't seem to find any of this information.
 
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seroth said:
Well today in class, we were talking about galaxies and orbits and the radius of black holese and how every black hole is at the center of a galaxy. Then i got to thinking, what causes the spin of a galaxy, and this led me to thinking, is there a way to find out the torque of a spinning galaxy? I'm sure it would have to do with force and angular momentum of each galaxy, but I couldn't seem to find any of this information.

Torque is about the transfer of angular momentum per unit time. Gravitational waves can cause distant objects to move in different paths. Theoretically, galaxies can produce a torque on each other, especially if they collide. There's a star escaping our galaxy right now because it has swung very close to a black hole. That's an extreme example of the galaxy's torque in action.

A galaxy doesn't have any torque in of itself. Parts of our galaxy interact with parts of other galaxies, transferring parts of spin as result of their palpitations. They cause pressures waves like jellyfish in the sea.
 
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