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  • What creates light ?

    robo_warrior

    Member

    Updated: Oct 26, 2024
    Views: 1.0K
    Its a fact that light(electromagnetic radiation) is created when charged particles are accelerated but what happens in a neutron star(composed of neutrons only) which makes it emit light, neutrons are not charged particle so theoretically a neutron star should not emit any electromagnetic radiation ,so is it that some other factor is creating light ?
    Similarly when a particle and its corresponding antiparticle annhilate each other create two photon(light particles) which is well and good for charged particles but when a neutron annhilates an antineutron how is light created(no charged particle involved in overall process) is it a proof for existence of fractional charges called quarks which are the constitute a neutron.
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  • Ramani Aswath

    Member • Jun 23, 2012

    The issue is that neutron stars are not composed of only neutrons. The outer crust is largely ordinary atomic nuclei crushed together with a sea of electrons flowing through gaps.
    However the one million degree Kelvin temperature means that the radiation is essentially Gamma rays or high energy X rays.
    In the case of white dwarfs the emission spreads uniformly across the EM spectrum and the object appears white.
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