FIRST ASTEROSEISMIC LIMITS ON THE NATURE OF DARK MATTER

被引：44

作者：

Casanellas, Jordi ^{[1
]}

Lopes, Ilidio ^{[1
,2
]}

机构：

[1] Inst Super Tecn, CENTRA, Lisbon, Portugal

[2] Univ Evora, Dept Fis, Evora, Portugal

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2013年 / 765卷 / 01期

关键词：

asteroseismology; dark matter; stars: individual (alpha Cen B; KIC; 8006161; HD; 52265); SOLAR-LIKE OSCILLATIONS; STARS; EVOLUTION; CAPTURE; SUN;

D O I：

10.1088/2041-8205/765/1/L21

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the first constraints on the properties of weakly interacting low-mass dark matter (DM) particles using asteroseismology. The additional energy transport mechanism due to accumulated asymmetric DM particles modifies the central temperature and density of low-mass stars and suppresses the convective core expected in 1.1-1.3 M-circle dot stars even for an environmental DM density as low as the expected in the solar neighborhood. An asteroseismic modeling of the stars KIC 8006161, HD 52265, and a Cen B revealed small frequency separations significantly deviated from the observations, leading to the exclusion of a region of the DM parameter space mass versus spin-dependent DM-proton scattering cross section comparable with present experimental constraints.

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