Do all galaxies have a blackhole in the center

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Am i correct if i would state that all galaxies have a blackhole in the center. Since other galaxies orbit around a center point in a galaxy the barycenter right? I would assume at this point there must have some insane gravitational pull. Which only blackholes can create, right?



(if this is a bit vague pls tell me so i can clarify!)

I am a complete newbie to astronomy in general, so sorry if this question makes no sense what so ever..



Thanks






black-hole galaxy galaxy-center







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  • Why do you say that it "must have some insane gravitational pull"? Stuff orbits the barycenter because it's the center of mass, it doesn't have to be a big concentration of mass. FWIW, for galaxies with a central BH, the mass of that BH is a tiny fraction of the whole galaxy's mass. It's not like the BH dominates the galaxy's gravitational structure, although of course it has a fairly big effect in the immediate vicinity of the BH.
    – PM 2Ring
    3 hours ago














up vote
1
down vote

favorite












Am i correct if i would state that all galaxies have a blackhole in the center. Since other galaxies orbit around a center point in a galaxy the barycenter right? I would assume at this point there must have some insane gravitational pull. Which only blackholes can create, right?



(if this is a bit vague pls tell me so i can clarify!)

I am a complete newbie to astronomy in general, so sorry if this question makes no sense what so ever..



Thanks






black-hole galaxy galaxy-center







share|improve this question





















  • Why do you say that it "must have some insane gravitational pull"? Stuff orbits the barycenter because it's the center of mass, it doesn't have to be a big concentration of mass. FWIW, for galaxies with a central BH, the mass of that BH is a tiny fraction of the whole galaxy's mass. It's not like the BH dominates the galaxy's gravitational structure, although of course it has a fairly big effect in the immediate vicinity of the BH.
    – PM 2Ring
    3 hours ago












up vote
1
down vote

favorite









up vote
1
down vote

favorite











Am i correct if i would state that all galaxies have a blackhole in the center. Since other galaxies orbit around a center point in a galaxy the barycenter right? I would assume at this point there must have some insane gravitational pull. Which only blackholes can create, right?



(if this is a bit vague pls tell me so i can clarify!)

I am a complete newbie to astronomy in general, so sorry if this question makes no sense what so ever..



Thanks






black-hole galaxy galaxy-center







share|improve this question













Am i correct if i would state that all galaxies have a blackhole in the center. Since other galaxies orbit around a center point in a galaxy the barycenter right? I would assume at this point there must have some insane gravitational pull. Which only blackholes can create, right?



(if this is a bit vague pls tell me so i can clarify!)

I am a complete newbie to astronomy in general, so sorry if this question makes no sense what so ever..



Thanks






black-hole galaxy galaxy-center




black-hole galaxy galaxy-center






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asked 5 hours ago









FutureCake

1184




1184











  • Why do you say that it "must have some insane gravitational pull"? Stuff orbits the barycenter because it's the center of mass, it doesn't have to be a big concentration of mass. FWIW, for galaxies with a central BH, the mass of that BH is a tiny fraction of the whole galaxy's mass. It's not like the BH dominates the galaxy's gravitational structure, although of course it has a fairly big effect in the immediate vicinity of the BH.
    – PM 2Ring
    3 hours ago
















  • Why do you say that it "must have some insane gravitational pull"? Stuff orbits the barycenter because it's the center of mass, it doesn't have to be a big concentration of mass. FWIW, for galaxies with a central BH, the mass of that BH is a tiny fraction of the whole galaxy's mass. It's not like the BH dominates the galaxy's gravitational structure, although of course it has a fairly big effect in the immediate vicinity of the BH.
    – PM 2Ring
    3 hours ago















Why do you say that it "must have some insane gravitational pull"? Stuff orbits the barycenter because it's the center of mass, it doesn't have to be a big concentration of mass. FWIW, for galaxies with a central BH, the mass of that BH is a tiny fraction of the whole galaxy's mass. It's not like the BH dominates the galaxy's gravitational structure, although of course it has a fairly big effect in the immediate vicinity of the BH.
– PM 2Ring
3 hours ago




Why do you say that it "must have some insane gravitational pull"? Stuff orbits the barycenter because it's the center of mass, it doesn't have to be a big concentration of mass. FWIW, for galaxies with a central BH, the mass of that BH is a tiny fraction of the whole galaxy's mass. It's not like the BH dominates the galaxy's gravitational structure, although of course it has a fairly big effect in the immediate vicinity of the BH.
– PM 2Ring
3 hours ago










1 Answer
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It's generally assumed that most galaxies have a black hole at their centre. There are galaxies we've detected that don't seem to have a black hole though, so it's not a necessary requirement or a guaranteed find in every case.



In cases without a black hole, it has been postulated that the gravity of the stars and gases combined is enough to hold the galaxy together.






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    1 Answer
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    1 Answer
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    active

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    active

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    active

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    up vote
    2
    down vote



    accepted










    It's generally assumed that most galaxies have a black hole at their centre. There are galaxies we've detected that don't seem to have a black hole though, so it's not a necessary requirement or a guaranteed find in every case.



    In cases without a black hole, it has been postulated that the gravity of the stars and gases combined is enough to hold the galaxy together.






    share|improve this answer
























      up vote
      2
      down vote



      accepted










      It's generally assumed that most galaxies have a black hole at their centre. There are galaxies we've detected that don't seem to have a black hole though, so it's not a necessary requirement or a guaranteed find in every case.



      In cases without a black hole, it has been postulated that the gravity of the stars and gases combined is enough to hold the galaxy together.






      share|improve this answer






















        up vote
        2
        down vote



        accepted







        up vote
        2
        down vote



        accepted






        It's generally assumed that most galaxies have a black hole at their centre. There are galaxies we've detected that don't seem to have a black hole though, so it's not a necessary requirement or a guaranteed find in every case.



        In cases without a black hole, it has been postulated that the gravity of the stars and gases combined is enough to hold the galaxy together.






        share|improve this answer












        It's generally assumed that most galaxies have a black hole at their centre. There are galaxies we've detected that don't seem to have a black hole though, so it's not a necessary requirement or a guaranteed find in every case.



        In cases without a black hole, it has been postulated that the gravity of the stars and gases combined is enough to hold the galaxy together.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 5 hours ago









        Kyle

        2085




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