X rays from old neutron stars heated by axion stars

X rays from old neutron stars heated by axion stars

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∼10 6 K . We suggest that these are possible candidates for X r...

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Bibliographic Details
Published in:Physics letters. B Vol. 486; no. 1; pp. 147 - 152
Main Author: Iwazaki, Aiichi
Format: Journal Article
Language:English
Published: Elsevier B.V 27-07-2000
Subjects:
Axion
Boson star
Dark matter
Neutron star
X ray
Neutron star
73.40.Gk
Dark matter
73.40.Hm
73.20.Dx
Boson star
X ray
73.61.-r
Axion
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Summary: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∼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.
ISSN:0370-2693
1873-2445
DOI:10.1016/S0370-2693(00)00745-0