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I'm going to add another way to break up a neutron star. Shoot antimatter at it. The difficulty with breaking up a neutron stars is that, once they undergo the compression to become Neutron stars, their gravitation tends to keep them there. The minimum size for a Neutron star to form is about 1.2-1.5 solar masses, but once it's shrunk down, the mass it ...


The only likely mechanism by which a neutron star can break up is through a collision with another neutron star, in particular in binary neutron star mergers.


The neutron star is still "regular enough mater" for that it would react to anything a normal object would react. To me the point is more "since its center is not far to collapsing to blackhole, is it possible to shake (or breakup) a neutron star without making it collapse".


Do you mean anything in the real universe or just theoretically? If the latter, then I can think of a few phenomena: Heat: Just heat it up until the thermal velocity at the surface is greater than the escape volcity. Then neutrons will just fly off and it will evaporate (sublimate?). Spin: Wind it up until the tangential velocity at the equator reaches ...


Let's do a Back-of-the-Envelope calculation. It is typical for large-scale neutrino calorimeters (I have KamLAND specifically in mind because I worked on the project and know the detector reasonably well) to have an energy-scale uncertainty of a couple of percent at a few MeV energy. That's a systematic, and will effect all results more or less equally. ...


Neutrinos are notoriously difficult to detect . Have a look at this review paper : A core-collapse supernova will produce an enormous burst of neutrinos of all flavors in the few-tens-of-MeV range. Measurement of the flavor, time and energy structure of a nearby core-collapse neutrino burst will yield answers to many physics and astrophysics questions. ...

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