4.6 Article

Effect of electromagnetic dipole dark matter on energy transport in the solar interior

出版社

IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2017/03/029

关键词

dark matter theory; solar physics

资金

  1. ARC Centre of Excellence for Particle Physics at the Terascale (CoEPP) [CE110001104]
  2. Centre for the Subatomic Structure of Matter (CSSM)
  3. STFC [ST/K00414X/1, ST/N000838/1]
  4. Generalitat de Catalunya [2014SGR-1458]
  5. MINECO [ESP201456003-R, ESP2015-66134-R]
  6. Imperial College London Junior Research Fellowship (JRF)
  7. Australian Research Council Future Fellowship [FT140100244]
  8. STFC [ST/K00414X/1, ST/P000762/1] Funding Source: UKRI
  9. Science and Technology Facilities Council [ST/K00414X/1, ST/P000762/1] Funding Source: researchfish

向作者/读者索取更多资源

In recent years, a revised set of solar abundances has led to a discrepancy in the sound-speed profile between helioseismology and theoretical solar models. Conventional solutions require additional mechanisms for energy transport within the Sun. Vincent et al. have recently suggested that dark matter with a momentum or velocity dependent cross section could provide a solution. In this work, we consider three models of dark matter with such cross sections and their effect on the stellar structure. In particular, the three models incorporate dark matter particles interacting through an electromagnetic dipole moment: an electric dipole, a magnetic dipole or an anapole. Each model is implemented in the DarkStec stellar evolution program, which incorporates the effects of dark matter capture and heat transport within the solar interior. We show that dark matter with an anapole moment of similar to 1 GeV-2 or magnetic dipole moment of 10(-3) mu p can improve the sound speed profile, small frequency separations and convective zone radius with respect to the Standard Solar Model. However, the required dipole moments are strongly excluded by direct detection experiments.

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