X Rays from Old Neutron Stars Heated by Axion Stars

Abstract

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.

12 Pages, Revtex

References in corpus (3)

• Axionic Boson Stars in Magnetized Conducting Media
• A Possible Origin of Gamma Ray Bursts and Axionic Boson Stars
• Radiations from Oscillating Axionic Boson Stars in an External Magnetic Field

Cited by in corpus (5)

• Boson Stars and Oscillatons: A Review
• Axion Stars and Fast Radio Bursts
• Rotating Drops of Axion Dark Matter
• Classical and Quantum Decay of Oscillatons: Oscillating Self-Gravitating Real Scalar Field Solitons
• Can the dark matter halo be a collisionless ensemble of axion stars?