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| Impacts of WIMP dark matter upon stellar evolution: main-sequence stars (15'+5') |
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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 WIMP-influenced stellar models for main sequence stars,
computed
using DarkStars. We describe the changes in stellar structure and main
sequence
evolution which occur for masses ranging from 0.3 to 2.0 solar masses and
metallicities from Z = 0.0003 to 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 be
obtained 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, leading to punctuated evolution. |
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| Id: |
382 |
| Place: |
AlbaNova Room: FB53 |
| Starting date: |
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| Duration: |
20' |
| Contribution type: |
Talk |
| Primary Authors: |
SCOTT, Pat (Dept. Physics, Stockholm University) |
| Co-Authors: |
FAIRBAIRN, Malcolm (CERN & King's College London) EDSJö, Joakim (Dept. Physics, Stockholm University) |
| Presenters: |
SCOTT, Pat |
| Material: |
Slides |
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| Included in session: |
Dark Stars |
| Included in track: |
Dark Stars |
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