| 1. |
- Blennow, Mattias, 1980-, et al.
(författare)
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Neutrinos from WIMP annihilations in the Sun including neutrino oscillations
- 2011
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Ingår i: The Proceedings of the 22nd International Conference on Neutrino Physics and Astrophysics. - : Elsevier. ; , s. 37-38
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Konferensbidrag (refereegranskat)abstract
- The prospects to detect neutrinos from the Sun arising from dark matter annihilations in the core of the Sun are reviewed. Emphasis is placed on new work investigating the effects of neutrino oscillations on the expected neutrino fluxes.
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| 2. |
- Blennow, Mattias, et al.
(författare)
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WIMP neutrinos from the Sun and the Earth
- 2008
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Konferensbidrag (refereegranskat)abstract
- We discuss the propagation treatment of the indirect dark matter detection using WIMP annihilations in the Sun and the Earth. In particular, we focus on treating neutrino interactions and oscillations in a consistent framework, including tau neutrino regeneration and a full three-flavor neutrino oscillation framework. We also discuss the equivalence of using a Monte Carlo approach - suited for inclusion in neutrino telescope Monte Carlos - and the density matrix formalism.
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| 3. |
- Edsjö, Joakim, et al.
(författare)
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High energy neutrinos from cosmic ray interactions in the Sun
- 2017
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Cosmic rays hitting the outer parts of the Sun result in showers of high energy particles. The shower particles propagate through the solar atmosphere and interact further or decay. Among the shower particles are high energy neutrinos, after production these oscillate between flavours and interact with the solar material while propagating out of the Sun to the Earth. The result is a high energy neutrino flux at the Earth that may be detectable by modern neutrino detectors such as IceCube. Such a neutrino flux will furthermore act as a background in searches for neutrinos coming from annihilations of weakly interacting massive particles, often suggested to be the dark matter in the Universe. We perform an updated calculation of the solar atmospheric neutrino flux using the code MCEq for the cascade evolution in the solar atmosphere and WimpSim for the propagation of the neutrinos from the Sun to the detector on Earth, including full three-flavour treatment of neutrino oscillations and interactions in the Sun.
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| 4. |
- Scott, Pat, et al.
(författare)
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Impacts of WIMP dark matter upon stellar evolution : main-sequence stars
- 2008
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Ingår i: Identification of dark matter 2008. ; , s. 73-
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Konferensbidrag (refereegranskat)abstract
- 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
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| 6. |
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| 7. |
- Sivertsson, Sofia, 1982-, et al.
(författare)
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Accurate calculations of the WIMP halo around the Sun and prospects for gamma ray detection
- 2008
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Ingår i: Identification of dark matter 2008. - : SISSA. ; , s. 112-
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Konferensbidrag (refereegranskat)abstract
- Weakly interacting massive particles (WIMPs) can be captured by heavenly objects, like the Sun.Under the process of being captured by the Sun, they will build up a population of WIMPs aroundit, that will eventually sink to the core of the Sun. It has been argued with simpler estimatesbefore that this halo of WIMPs around the Sun could be a strong enough gamma ray source to bea detectable signature for WIMP dark matter. We here revisit the problem using detailed MonteCarlo simulations and detailed composition and structure information about the Sun to estimatethe size of the gamma ray flux. Compared to earlier estimates, we find that the gamma ray fluxfrom WIMP annihilations in the Sun halo would be negligible and no current or planned detectorswould even be able to detect this flux.
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