Browsing Mathematics and Physics by Title

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  • Title, Alan; Carolus, Thomas; Shine, Richard; Wolfson, C. Jacob; Nightingale, Richard; Schrijver, Carolus; Brown, Daniel; Alexander, David (2003)
    Recent observations from TRACE in the photospheric white light channel have shown sunspots that rotate up to 200° about their umbral centre over a period of 3-5 days. The corresponding loops in the coronal fan are often ...
  • Kellett, B.; Dunkin, S. K.; Grande, Manuel (2001)
    Mercury is the little known innermost terrestrial planet. A number of significant questions remain unanswered. We describe areas in which a compact imaging X-ray spectrometer could make a valuable contribution. It can ...
  • Noakes, T. C. Q.; Bailey, P.; Jenkins, Tudor; Hayton, D. J. (2002-06)
    Medium energy ion scattering, Fourier transform infrared spectroscopy and spectroscopic ellipsometry measurements have been performed on thermally grown SiO2 layers on 4H silicon carbide. The data suggest the presence of ...
  • Wood, Ian; Geissert, Matthias; Heck, Horst; Hieber, Matthias (2005-12)
    Let Ω be an exterior domain in It is shown that Ornstein-Uhlenbeck operators L generate C0-semigroups on Lp(Ω) for p ∈ (1, ∞) provided ∂Ω is smooth. The method presented also allows to determine the domain D(L) of L and ...
  • Geissert, Matthias; Heck, Horst; Hieber, Matthias; Wood, Ian (Birkhäuser Basel, 2005)
    Let Ω be an exterior domain in It is shown that Ornstein-Uhlenbeck operators L generate C0-semigroups on Lp(Ω) for p ∈ (1, ∞) provided ∂Ω is smooth. The method presented also allows to determine the domain D(L) of L and ...
  • Brown, Daniel; Schrijver, Carolus (2000-06-27)
    The magnetic field in the outer solar atmosphere is frequently distorted by flares. In some cases, a fraction of the field exhibits a rapidly damped oscillation (Schrijver et al.; Aschwanden et al.). If this is a resonating ...
  • Bishop, Gerard J.; Kersley, L.; Malan, D.; Pryse, Sian (2006-10-01)
    Measurements of total electron content, obtained by monitoring satellite transmissions at stations in the United Kingdom during a period of 12 months, have been used to characterize the structure and dynamics of the main ...
  • Winningham, D.; Grande, Manuel; Lundin, R.; Barabash, S. (2006)
    Auroras are caused by accelerated charged particles precipitating along magnetic field lines into a planetary atmosphere, the auroral brightness being roughly proportional to the precipitating particle energy flux. The ...
  • Plakhov, A. Y. (2004)
    The Monge-Kantorovich problem on finding a measure realizing the transportation of mass from to at minimum cost is considered. The initial and resulting distributions of mass are assumed to be the same and the cost of the ...
  • Gohm, Rolf (2003)
    The probabilistic index of a completely positive map is defined in analogy with a formula of M. Pimsner and S. Popa for conditional expectations. As an application, we describe a new strategy for computing the Jones index ...
  • Plakhov, A. Y.; Gouveia, P. D. F. (2007)
    A two-dimensional body moves through a rarefied medium; the collisions of the medium particles with the body are absolutely elastic. The body performs both translational and slow rotational motion. It is required to select ...
  • Palmer, R. E.; Bedson, T. R.; Jenkins, Tudor; Hayton, D. J. (2001)
    We report a quantitative investigation of direct electron beam writing in monolayer films of passivated gold nanoclusters. In this process, the passivating organic ligands are (partially) removed to create gold-based ...
  • Gough, John Edward; James, M. R. (2009-05-01)
    A quantum network is an open system consisting of several component Markovian input-output subsystems interconnected by boson field channels carrying quantum stochastic signals. Generalizing the work of Chebotarev and ...
  • Gough, John E.; Sobolev, Adrei (2005-09)
    We establish a quantum functional central limit for the dynamics of a system coupled to a Fermionic bath with a general interaction linear in the creation, annihilation and scattering of the bath reservoir. Following a ...
  • Pryse, Sian (2003)
    The technique of radio tomography has developed during the past fifteen years from a theoretical concept to an established experimental method, used for geophysical investigations ofsolar-terrestrial processes. It also has ...
  • Obreskov, Oleg; Smolyanov, Oleg; Gough, John E. (2005)
    In this paper, we consider stochastic Schrödinger equations with twodimensional white noise. Such equations are used to describe the evolution of an open quantum system undergoing a process of continuous measurement. ...
  • Greaves, George; Meneau, F.; ap Gwynn, Iolo A.; Wade, S. (2003-08-24)
    Low-density zeolites collapse to the rigid amorphous state at temperatures that are well below the melting points of crystals of the same composition but of conventional density. Here we show, by using a range of experimental ...
  • New, R.; Pintér, Balázs; Erdélyi, R. (2001)
    In the present paper the splitting of sectoral () helioseismic eigenmodes (f- and p-modes) is studied in the presence of a magnetic atmosphere. The solar interior is in a steady state, with sub-photospheric plasma flow ...
  • Pintér, Balázs; New, R.; Erdélyi, R. (EDP Sciences, 2001-10)
    In the present paper the splitting of sectoral (m=+/- l) helioseismic eigenmodes (f- and p-modes) is studied in the presence of a magnetic atmosphere. The solar interior is in a steady state, with sub-photospheric plasma ...
  • Lloyd, Noel G.; Pearson, Jane M. (2007)
    We describe an approach to the computation of symbolic resultants in which factors are removed during the course of the calculation, so reducing the stack size required for intermediate expressions and the storage space ...

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