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Impacts of WIMP dark matter upon stellar evolution: main-sequence stars
Stockholm University, Faculty of Science, Department of Physics.
2008 (English)In: Identification of dark matter 2008: August 18-22, 2008 Stockholm, Sweden, 2008, 73- p.Conference paper (Refereed)
Abstract [en]

The presence of large amounts of WIMP dark matter in stellar cores has been shown to have significant effects upon models of stellar evolution. We present a series of detailed grids of WIMPinfluenced

stellar models for main sequence stars, computed using the

DarkStars code. We describe the changes in stellar structure and main sequence evolution which occur for masses ranging from 0.3 to 2.0 M and metallicities from Z = 0:0003–0: 02, as a function of the rate

of energy injection by WIMPs. We then go on to show what rates of energy injection can beobtained using realistic orbital parameters for stars near supermassive black holes, including detailed considerations of dark matter halo velocity and density profiles. Capture and annihilation rates are strongly boosted when stars follow elliptical rather than circular orbits, causing WIMP annihilation to provide up to 100 times the energy of hydrogen fusion in stars at the Galactic centre

Place, publisher, year, edition, pages
2008. 73- p.
Keyword [en]
Astrophysics, High Energy Physics - Phenomenology
URN: urn:nbn:se:su:diva-38214OAI: diva2:308039
Available from: 2010-04-01 Created: 2010-04-01 Last updated: 2010-10-29Bibliographically approved

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Scott, PatEdsjö, Joakim
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