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| Paper: |
Revisiting the Impact of Axions in the Cooling of White Dwarfs |
| Volume: |
469, 18th European White Dwarf Workshop (EUROWD12) |
| Page: |
189 |
| Authors: |
Melendez, B.; Miller Bertolami, M.; Althaus, L. |
| Abstract: |
It has been shown that the shape of the luminosity function of white
dwarfs can be a powerful tool to check for the possible existence of
DFSZ-axions. In particular, Isern et al. (2008) showed that, if the
axion mass is of the order of a few meV, then the white dwarf
luminosity function is sensitive enough to detect their existence. For
axion masses of about ma > 5 meV the axion emission can be a
primary cooling mechanism for the white dwarf and the feedback of the
axion emission into the thermal structure of the white dwarf needs to
be considered. Here we present computations of white dwarf cooling
sequences that take into account the effect of axion emission in a
self consistent way by means of full stellar evolution
computations. Then, we study and discuss the impact of the axion
emission in the white dwarf luminosity function. |
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