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Why does not dark matter gather and form celestial bodies?


How Does Dark Matter Form Lumps?Why does dark matter form walls and filamentsDoes a black hole have any kind of mass?Is there a binary black hole system in the middle of the galaxy?A Theory of Almost Everything?Density of dark matter along the galaxyQuestions about shape of dark matter orbits in spiral galaxiesDark matter annihilation cross sectionWhy does dark matter form a halo, Unlike normal matter?Why does dark matter form halos?













3












$begingroup$


since the only thing we know about dark matter that it "attracts" and affect our Baryonic matter's momentum and speed, which means that it does have mass of a sort.



so why didn't we witness a darkmatter-darkmatter interactions in form of collisions of celestial bodies like stars, Black holes or other distinct things, what do we know about that?



PS: it would be very helpful for me if someone has an answer can cite it with a paper on the topic. thanks in advance!






particle-physics gravity cosmology astrophysics dark-matter







share|cite|improve this question









$endgroup$
















    3












    $begingroup$


    since the only thing we know about dark matter that it "attracts" and affect our Baryonic matter's momentum and speed, which means that it does have mass of a sort.



    so why didn't we witness a darkmatter-darkmatter interactions in form of collisions of celestial bodies like stars, Black holes or other distinct things, what do we know about that?



    PS: it would be very helpful for me if someone has an answer can cite it with a paper on the topic. thanks in advance!






    particle-physics gravity cosmology astrophysics dark-matter







    share|cite|improve this question









    $endgroup$














      3












      3








      3





      $begingroup$


      since the only thing we know about dark matter that it "attracts" and affect our Baryonic matter's momentum and speed, which means that it does have mass of a sort.



      so why didn't we witness a darkmatter-darkmatter interactions in form of collisions of celestial bodies like stars, Black holes or other distinct things, what do we know about that?



      PS: it would be very helpful for me if someone has an answer can cite it with a paper on the topic. thanks in advance!






      particle-physics gravity cosmology astrophysics dark-matter







      share|cite|improve this question









      $endgroup$




      since the only thing we know about dark matter that it "attracts" and affect our Baryonic matter's momentum and speed, which means that it does have mass of a sort.



      so why didn't we witness a darkmatter-darkmatter interactions in form of collisions of celestial bodies like stars, Black holes or other distinct things, what do we know about that?



      PS: it would be very helpful for me if someone has an answer can cite it with a paper on the topic. thanks in advance!






      particle-physics gravity cosmology astrophysics dark-matter




      particle-physics gravity cosmology astrophysics dark-matter






      share|cite|improve this question













      share|cite|improve this question











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      share|cite|improve this question










      asked 1 hour ago









      NimbleDick CrabbNimbleDick Crabb

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          The standard answer is that dark matter does not seem to interact strongly with itself (although self-interacting dark matter is an active research topic), and does not emit electromagnetic radiation. The latter property means that a clump of dark matter cannot lose energy by radiating it away, and will remain a diffuse clump. Ordinary matter can coalesce, heat up, radiate away the energy, and coalesce further. Hence dark matter seems to form diffuse halos that do not form celestial bodies.






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            $begingroup$

            The standard answer is that dark matter does not seem to interact strongly with itself (although self-interacting dark matter is an active research topic), and does not emit electromagnetic radiation. The latter property means that a clump of dark matter cannot lose energy by radiating it away, and will remain a diffuse clump. Ordinary matter can coalesce, heat up, radiate away the energy, and coalesce further. Hence dark matter seems to form diffuse halos that do not form celestial bodies.






            share|cite|improve this answer











            $endgroup$

















              5












              $begingroup$

              The standard answer is that dark matter does not seem to interact strongly with itself (although self-interacting dark matter is an active research topic), and does not emit electromagnetic radiation. The latter property means that a clump of dark matter cannot lose energy by radiating it away, and will remain a diffuse clump. Ordinary matter can coalesce, heat up, radiate away the energy, and coalesce further. Hence dark matter seems to form diffuse halos that do not form celestial bodies.






              share|cite|improve this answer











              $endgroup$















                5












                5








                5





                $begingroup$

                The standard answer is that dark matter does not seem to interact strongly with itself (although self-interacting dark matter is an active research topic), and does not emit electromagnetic radiation. The latter property means that a clump of dark matter cannot lose energy by radiating it away, and will remain a diffuse clump. Ordinary matter can coalesce, heat up, radiate away the energy, and coalesce further. Hence dark matter seems to form diffuse halos that do not form celestial bodies.






                share|cite|improve this answer











                $endgroup$



                The standard answer is that dark matter does not seem to interact strongly with itself (although self-interacting dark matter is an active research topic), and does not emit electromagnetic radiation. The latter property means that a clump of dark matter cannot lose energy by radiating it away, and will remain a diffuse clump. Ordinary matter can coalesce, heat up, radiate away the energy, and coalesce further. Hence dark matter seems to form diffuse halos that do not form celestial bodies.







                share|cite|improve this answer














                share|cite|improve this answer



                share|cite|improve this answer








                edited 31 mins ago









                innisfree

                12k33162




                12k33162










                answered 35 mins ago









                Anders SandbergAnders Sandberg

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