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Prospects for Lunar Satellite Detection of Radio Pulses from Ultrahigh Energy Neutrinos Interacting with the Moon
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics. Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division. (Theoretical High Energy Physics)
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division.
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2007 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 98, no 7, 071103- p.Article in journal (Refereed) Published
Abstract [en]

The Moon provides a huge effective detector volume for ultrahigh energy cosmic neutrinos, which generate coherent radio pulses in the lunar surface layer due to the Askaryan effect. We report systematic Monte Carlo simulations which show that radio instruments on board a Moon-orbiting satellite can detect Askaryan pulses from neutrinos with energies above 10^{19} eV, i.e. near and above the interesting GZK limit, at the very low fluxes predicted in different scenarios.

Place, publisher, year, edition, pages
2007. Vol. 98, no 7, 071103- p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-26236DOI: 10.1103/PhysRevLett.98.071103ISI: 000244250300016OAI: oai:DiVA.org:uu-26236DiVA: diva2:54010
Available from: 2007-02-15 Created: 2007-02-15 Last updated: 2017-12-07Bibliographically approved
In thesis
1. Physics at the High-Energy Frontier: Phenomenological Studies of Charged Higgs Bosons and Cosmic Neutrino Detection
Open this publication in new window or tab >>Physics at the High-Energy Frontier: Phenomenological Studies of Charged Higgs Bosons and Cosmic Neutrino Detection
2009 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The Standard Model of particle physics successfully describes present collider data. Nevertheless, theoretical and cosmological results call for its extension. A softly broken supersymmetric completion around the TeV scale solves several of the outstanding issues. Supersymmetry requires two Higgs doublets, leading to five physical Higgs states. These include a pair of charged Higgs bosons H±, which are a generic feature of theories with multiple Higgs doublets. Using results from high-energy colliders and flavour physics, constraints are derived on the charged Higgs boson mass and couplings; both for constrained scenarios in the minimal supersymmetric standard model (MSSM) with grand unification, and for general two-Higgs-doublet models. The MSSM results are compared to the projected reach for charged Higgs searches at the Large Hadron Collider (LHC). At the LHC, a light charged Higgs is accessible through top quark decay. Beyond a discovery, it is demonstrated how angular distributions sensitive to top quark spin correlations can be used to determine the structure of the H±tb coupling. The public code 2HDMC, which performs calculations in a general, CP-conserving, two-Higgs-doublet model, is introduced.

In parallel to the developments at colliders, the most energetic particles ever recorded are the ultra-high-energy (UHE) cosmic rays. To gain more insight into their origin, new experiments are searching for UHE neutrinos. These searches require detectors of vast volume, which can be achieved by searching for coherent radio pulses arising from the Askaryan effect. The prospects of using a satellite orbiting the Moon to search for neutrino interactions are investigated, and a similar study for an Earth-based radio telescope is presented. In both cases, the method is found competitive for detection of the very highest energy neutrinos considered.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2009. 71 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 699
Keyword
particle physics, Standard Model, beyond the Standard Model, supersymmetry, Higgs physics, charged Higgs boson, LHC, flavour physics, ultra-high-energy neutrinos, Askaryan effect, radio detection, lunar satellites
National Category
Subatomic Physics
Research subject
High Energy Physics
Identifiers
urn:nbn:se:uu:diva-111162 (URN)978-91-554-7682-3 (ISBN)
Public defence
2010-01-29, Häggsalen, Ångströmlaboratoriet, Uppsala, 13:15 (English)
Opponent
Supervisors
Available from: 2010-01-07 Created: 2009-12-04 Last updated: 2010-01-07Bibliographically approved
2. Numerical Simulation as a Tool for Studying Waves and Radiation in Space
Open this publication in new window or tab >>Numerical Simulation as a Tool for Studying Waves and Radiation in Space
2008 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Plasma physics governs the area of interactions between charged particles. As 99% of the visible universe is in a plasma state, it is an important topic in astronomy and space physics, where we already at an altitude of 60 km reach the plasma environment surrounding our planet in the form of the ionosphere. The search for fusion, the source of power for the sun, as well as industrial use have been the main topics for earth bound plasma reasurch.

A plasma is composed of charged particles which interact by the electromagnetic force. In the kinetic description, via the Vlasov-Maxwell equations, the system is described in terms of probability distribution functions for each particle species, expressed in terms of particles position and velocity. The particles interact via self-consistent fields as determined by Maxwell's equations. For understanding the complex behaviour of the system, we need numerical solvers. These come in two flavours, Lagrangian methods, dealing with the moving around of synthetic particles, and Eulerian methods, which solve the set of partial differential, Vlasov and Maxwell equations. To perform the computations within reasonable time, we need to distribute our calculations on multiple machines, i.e. parallel programming, with the best possible matching between our computational needs and the need of splitting algorithms to adapt to our processing environment.

Paper I studies electron and ion beams within a Lagrangian and fluid model and compare the results with experimental observations. This is continued with studies of a full kinetic system, using an Eulerian solver, for a closer look at electron-ion interactions in relation to ionospheric observations, (Papers II and IV). To improve the performance of the Eulerian solver it was parallelised (Paper III). The thesis is ending with the possibility to observe ultrahigh energy neutrinos from an orbiting satellite by using the Moon's surface as a detector Paper V.

Place, publisher, year, edition, pages
Uppsala: Universitetsbiblioteket, 2008. 42 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 488
Keyword
space physics, plasma physics, kinetic plasma, plasma simulations, beam instabilities
National Category
Fusion, Plasma and Space Physics
Identifiers
urn:nbn:se:uu:diva-9517 (URN)978-91-554-7384-6 (ISBN)
Public defence
2009-01-30, Siegbhansalen, Ångström Laboratoriet, Lägerhyddsvägen 1, Uppsala, 13:15 (English)
Opponent
Supervisors
Available from: 2009-01-01 Created: 2009-01-01 Last updated: 2010-03-09Bibliographically approved

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Stål, OscarThidé, BoIngelman, Gunnar

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