Colliding stars

  1. Are there any known examples of colliding stars? has the phenomena ever been observed?

  2. jcsd
  3. Chronos

    Chronos 10,348
    Science Advisor
    Gold Member

    Star collisions are extraordinarily rare [space is really big]. The most common of such events is called an inspiralling binary system, which takes a very long time to occur.
  4. Vanadium 50

    Vanadium 50 18,488
    Staff Emeritus
    Science Advisor
    Education Advisor

    You also have a phenomenon call "blue stragglers" in clusters.

    Note that "collision" is really only a special case of "mass transfer", which we see all the time.
  5. Drakkith

    Staff: Mentor

    I like to call it "Head-On Mass Transfer". Remember to buckle up.
  6. Globular cluster stars are more likely to mass-transfer that way.
  7. Has anyone ever modeled a stellar collision between stars of reasonably close mass
  8. Gamma-ray bursts, a great high-energy flashes observed every day in the sky, are thought to be the pruducts of collision between two neutron stars. It is not a head-on collision (due to a very low probability of such an interaction), but it is a hot topic in astrophysics now.

    Here's a great introductory video about it. Not very relevant to head-on stuff, but hey, we all love big explosions, right?

    Edit: LVP_man, there are simulations in that link, and I'd guess the stars are of equal mass.
  9. That was a very interesting video, amazing it took six weeks of computing time to create the simulation of the merger event between two neutron stars
  10. wow that was an amazing clip...
    i presume the neutron stars would be revolving around each other at almost relativistic speeds..
    what a thought.....
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