X Rays from Old Neutron Stars Heated by Axion Stars

Details X Rays from Old Neutron Stars Heated by Axion Stars X Rays from Old Neutron Stars Heated by Axion Stars

1999-06-14

arxiv.org/abs/hep-ph/9906353v1

Phys.Lett. B486 (2000) 147-152

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 Pages, Revtex

Scientific paper

10.1016/S0370-2693(00)00745-0

We show that axionic boson stars collide with isolated old neutron stars with strong magnetic field ($>10^8$ Gauss) and causes the neutron stars to radiate X ray by heating them. Surface temperatures of such neutron stars becomes$10^5 K \sim 10^6 K$. We suggest that these are possible candidates for X ray sources observed in ROSAT Survey. We discuss a possible way of identifying such neutron stars. We also point out that the collision generates a burst of monochromatic radiations with frequency given by axion mass.

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