Dark Matter Ignition of Type Ia Supernovae

被引：68

作者：

Bramante, Joseph ^{[1
]}

机构：

[1] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 115卷 / 14期

关键词：

HOST GALAXIES; NEUTRON-STARS; 1ST STARS; MASS; POPULATION; EVOLUTION; CAPTURE; LIMITS; NOVAE;

D O I：

10.1103/PhysRevLett.115.141301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Recent studies of low redshift type Ia supernovae (SN Ia) indicate that half explode from less than Chandrasekhar mass white dwarfs, implying ignition must proceed from something besides the canonical criticality of Chandrasekhar mass SN Ia progenitors. We showthat 1-100 PeV mass asymmetric dark matter, with imminently detectable nucleon scattering interactions, can accumulate to the point of self-gravitation in a white dwarf and collapse, shedding gravitational potential energy by scattering off nuclei, thereby heating the white dwarf and igniting the flame front that precedes SN Ia. We combine data on SN Ia masses with data on the ages of SN Ia-adjacent stars. This combination reveals a 2.8 sigma inverse correlation between SN Ia masses and ignition ages, which could result from increased capture of dark matter in 1.4 vs 1.1 solar mass white dwarfs. Future studies of SN Ia in galactic centers will provide additional tests of dark-matter-induced type Ia ignition. Remarkably, both bosonic and fermionic SN Ia-igniting dark matter also resolve the missing pulsar problem by forming black holes in greater than or similar to 10 Myr old pulsars at the center of the Milky Way.

引用

页数：6

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