Category Archives: Magnetic Fields

Cosmic rays: the secret agent of galaxy evolution

Cosmic rays are rays of energetic particles and radiation, with their composition in our own Galaxy being dominated by protons. Ellis Owen, a final-year PhD student working on cosmic rays, star-formation and galaxy evolution, tells us about his research on them.

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Studying magnetized neutron stars thought their polarized emission

Neutrons stars are one of the final stages of the stellar evolution of a massive star, in which a compact object made mostly of neutrons is left after a supernova event[1]. With masses ~ 1.5 M and radii of the order of ~ 10 km, neutron stars have an average density of ~ 1014 – 1015 gr cm-3, which is comparable to the density of an atomic nucleus (~2 . 1014 gr cm-3). Due to their high densities, they have strong surface gravitational fields and quantum effects dominate the properties of matter in their interiors.

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