Now showing items 21-40 of 321

  • Bombs and flares at the surface and lower atmosphere of the Sun 

    Hansteen, V. H.; Archontis, V.; Pereira, T. M. D.; Carlsson, M.; Rouppe van der Voort, L.; Leenaarts, J. (2017-04-10) - Journal article
    A spectacular manifestation of solar activity is the appearance of transient brightenings in the far wings of the Hα line, known as Ellerman bombs (EBs). Recent observations obtained by the Interface Region Imaging ...
  • Boundary layer flow beneath an internal solitary wave of elevation 

    Carr, Magda; Davies, P A (2010-02) - Journal article
    The wave-induced flow over a fixed bottom boundary beneath an internal solitary wave of elevation propagating in an unsheared, two-layer, stably stratified fluid is investigated experimentally. Measurements of the velocity ...
  • Bystander effects and their implications for clinical radiation therapy : insights from multiscale in silico experiments 

    Powathil, Gibin; Munro, Alastair John; Chaplain, Mark Andrew Joseph; Swat, Maciej (2016-07-21) - Journal article
    Radiotherapy is a commonly used treatment for cancer and is usually given in varying doses. At low radiation doses relatively few cells die as a direct response to radiation but secondary radiation effects, such as DNA ...
  • CALIFA, the Calar Alto Legacy Integral Field Area survey : III. Second public data release 

    García-Benito, R.; Zibetti, S.; Sánchez, S. F.; Husemann, B.; de Amorim, A. L.; Castillo-Morales, A.; Cid Fernandes, R.; Ellis, S. C.; Falcón-Barroso, J.; Galbany, L.; Gil de Paz, A.; González Delgado, R. M.; Lacerda, E. A. D.; López-Fernandez, R.; de Lorenzo-Cáceres, A.; Lyubenova, M.; Marino, R. A.; Mast, D.; Mendoza, M. A.; Pérez, E.; Vale Asari, N.; Aguerri, J. A. L.; Ascasibar, Y.; Bekerait*error*ė, S.; Bland-Hawthorn, J.; Barrera-Ballesteros, J. K.; Bomans, D. J.; Cano-Díaz, M.; Catalán-Torrecilla, C.; Cortijo, C.; Delgado-Inglada, G.; Demleitner, M.; Dettmar, R.-J.; Díaz, A. I.; Florido, E.; Gallazzi, A.; García-Lorenzo, B.; Gomes, J. M.; Holmes, L.; Iglesias-Páramo, J.; Jahnke, K.; Kalinova, V.; Kehrig, C.; Kennicutt, R. C.; López-Sánchez, Á. R.; Márquez, I.; Masegosa, J.; Meidt, S. E.; Mendez-Abreu, J.; Mollá, M.; Monreal-Ibero, A.; Morisset, C.; del Olmo, A.; Papaderos, P.; Pérez, I.; Quirrenbach, A.; Rosales-Ortega, F. F.; Roth, M. M.; Ruiz-Lara, T.; Sánchez-Blázquez, P.; Sánchez-Menguiano, L.; Singh, R.; Spekkens, K.; Stanishev, V.; Torres-Papaqui, J. P.; van de Ven, G.; Vilchez, J. M.; Walcher, C. J.; Wild, V.; Wisotzki, L.; Ziegler, B.; Alves, J.; Barrado, D.; Quintana, J. M.; Aceituno, J. (2015-04) - Journal article
    This paper describes the Second Public Data Release (DR2) of the Calar Alto Legacy Integral Field Area (CALIFA) survey. The data for 200 objects are made public, including the 100 galaxies of the First Public Data Release ...
  • Can substorm particle acceleration be applied to solar flares? 

    Birn, Joachim; Battaglia, Marina; Fletcher, Lyndsay; Hesse, Michael; Neukirch, Thomas (2017-10-20) - Journal article
    Using test particle studies in the electromagnetic fields of three-dimensional magnetohydrodynamic (MHD) simulations of magnetic reconnection, we study the energization of charged particles in the context of the standard ...
  • Cancellative and Malcev presentations for finite Rees index subsemigroups and extensions 

    Cain, Alan James; Robertson, Edmund Frederick; Ruskuc, Nik (2008-02) - Journal article
    It is known that, for semigroups, the property of admitting a finite presentation is preserved on passing to subsemigroups and extensions of finite Rees index. The present paper shows that the same holds true for Malcev, ...
  • Cell population heterogeneity and evolution towards drug resistance in cancer : biological and mathematical assessment, theoretical treatment optimisation 

    Chisholm, Rebecca H.; Lorenzi, Tommaso; Clairambault, Jean (2016-11) - Journal article
    Background. Drug-induced drug resistance in cancer has been attributed to diverse biological mechanisms at the individual cell or cell population scale, relying on stochastically or epigenetically varying expression of ...
  • The characteristics of billows generated by internal solitary waves 

    Carr, Magda; Franklin, James; King, Stuart Edward; Davies, Peter; Grue, John; Dritschel, David Gerard (2017-02) - Journal article
    The spatial and temporal development of shear-induced overturning billows associated with breaking internal solitary waves is studied by means of a combined laboratory and numerical investigation. The waves are generated ...
  • Clusters of small eruptive flares produced by magnetic reconnection in the Sun 

    Archontis, V.; Hansteen, V. (2014-06-10) - Journal article
    We report on the formation of small solar flares produced by patchy magnetic reconnection between interacting magnetic loops. A three-dimensional (3D) magnetohydrodynamic (MHD) numerical experiment was performed, where a ...
  • Collisionless current sheet equilibria 

    Neukirch, Thomas; Wilson, Fiona; Allanson, Oliver Douglas (2018-01) - Journal article
    Current sheets are important for the structure and dynamics of many plasma systems. In space and astrophysical plasmas they play a crucial role in activity processes, for example by facilitating the release of magnetic ...
  • Collisionless distribution function for the relativistic force-free Harris sheet 

    Stark, C. R.; Neukirch, T. (2012-01) - Journal article
    A self-consistent collisionless distribution function for the relativistic analogue of the force-free Harris sheet is presented. This distribution function is the relativistic generalization of the distribution function ...
  • A combined theory for magnetohydrodynamic equilibria with anisotropic pressure and magnetic shear 

    Hodgson, Jonathan David Brockie; Neukirch, Thomas (2017-03-10) - Journal article
    We present a new approach to the theory of magnetohydrodynamic equilibria with anisotropic pressure, magnetic shear and translational/rotational invariance. This approach involves combining two existing formalisms in order ...
  • A comparison of global magnetic field skeletons and active-region upflows 

    Edwards, S. J.; Parnell, C. E.; Harra, L. K.; Culhane, J. L.; Brooks, D. H. (2016-01-01) - Journal article
    Plasma upflows have been detected in active regions using Doppler velocity maps. The origin and nature of these upflows is not well known with many of their characteristics determined from the examination of single events. ...
  • Comparison of variational balance models for the rotating shallow water equations 

    Dritschel, David Gerard; Gottwald, Georg; Oliver, Marcel (2017-07) - Journal article
    We present an extensive numerical comparison of a family of balance models appropriate to the semi-geostrophic limit of the rotating shallow water equations, and derived by variational asymptotics in Oliver (J. Fluid Mech., ...
  • A complex solar coronal jet with two phases 

    Chen, Jie; Su, Jiangtao; Deng, Yuanyong; Priest, E. R. (2017-05-04) - Journal article
    Jets often occur repeatedly from almost the same location. In this paper, a complex solar jet was observed with two phases to the west of NOAA AR 11513 on 2012 July 2. If it had been observed at only moderate resolution, ...
  • A computational framework for particle and whole cell tracking applied to a real biological dataset 

    Yang, Feng Wei; Venkataraman, Chandrasekhar; Styles, Vanessa; Kuttenberger, Verena; Horn, Elias; von Guttenberg, Zeno; Madzvamuse, Anotida (2016-05-24) - Journal article
    Cell tracking is becoming increasingly important in cell biology as it provides a valuable tool for analysing experimental data and hence furthering our understanding of dynamic cellular phenomena. The advent of high-throughput, ...
  • Consequences of spontaneous reconnection at a two-dimensional non-force-free current layer 

    Fuentes Fernandez, Jorge; Parnell, Clare Elizabeth; Hood, Alan William; Priest, Eric Ronald; Longcope, Dana (2012-02) - Journal article
    Magnetic neutral points, where the magnitude of the magnetic field vanishes locally, are potential locations for energy conversion in the solar corona. The fact that the magnetic field is identically zero at these points ...
  • Contribution of mode-coupling and phase-mixing of Alfvén waves to coronal heating 

    Pagano, P.; De Moortel, I. (2017-05-12) - Journal article
    Context. Phase-mixing of Alfvén waves in the solar corona has been identified as one possible candidate to explain coronal heating. While this scenario is supported by observations of ubiquitous oscillations in the corona ...
  • Convectively induced shear instability in large amplitude internal solitary waves 

    Carr, Magda; Fructus, D; Grue, J; Jensen, A; Davies, P A (2008-12) - Journal article
    Laboratory study has been carried out to investigate the instability of an internal solitary wave of depression in a shallow stratified fluid system. The experimental campaign has been supported by theoretical computations ...
  • Copulae on products of compact Riemannian manifolds 

    Jupp, P.E. (2015-09) - Journal article
    Abstract One standard way of considering a probability distribution on the unit n -cube, [0 , 1]n , due to Sklar (1959), is to decompose it into its marginal distributions and a copula, i.e. a probability distribution on ...