Plasmoid impacts on neutron stars and highest energy cosmic rays

Details Plasmoid impacts on neutron stars and highest energy cosmic rays Plasmoid impacts on neutron stars and highest energy cosmic rays

2001-04-04

arxiv.org/abs/astro-ph/0104090v1

Phys.Rev.Lett. 86 (2001) 4745

Astronomy and Astrophysics

Astrophysics

4 pages, 4 figures, accepted for publication in Phys. Rev. Lett., uses REVTEX

Scientific paper

10.1103/PhysRevLett.86.4745

Particle acceleration by electrostatic polarization fields that arise in plasmas streaming across magnetic fields is discussed as a possible acceleration mechanism of highest-energy cosmic rays. Specifically, plasmoids arising in planetoid impacts onto neutron star magnetospheres are considered. We find that such impacts at plausible rates may account for the observed flux and energy spectrum of the highest energy cosmic rays.

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