Zobrazeno 1 - 10
of 309
pro vyhledávání: '"D M, Walker"'
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 5, Pp 1-43 (2023)
Abstract The production of lepton pairs (Drell-Yan process) at the LHC is being measured to high precision, enabling the extraction of distributions that are triply differential in the di-lepton mass and rapidity as well as in the scattering angle de
Externí odkaz:
https://doaj.org/article/e2eb79e866cc43a98520c6f82107fa52
Publikováno v:
Physical Review Research, Vol 6, Iss 1, p 013293 (2024)
We present an analysis of interspecies interactions between Rydberg d-states of rubidium and cesium. We identify the Förster resonance channels offering the strongest interspecies couplings, demonstrating the viability for performing high-fidelity t
Externí odkaz:
https://doaj.org/article/e962d72b8aa44470a7c4b0f3522fa26d
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 6, Pp 1-13 (2019)
Abstract Final states with a vector boson and a hadronic jet allow one to infer the Born-level kinematics of the underlying hard scattering process, thereby probing the partonic structure of the colliding protons. At forward rapidities, the parton co
Externí odkaz:
https://doaj.org/article/bf4c30e3367e4d41ab29b0edbc306398
Publikováno v:
Annales Geophysicae, Vol 34, Pp 857-870 (2016)
HF (high-frequency) radars belonging to SuperDARN (Super Dual Auroral Radar Network) receive backscatter over substantial fields of view which, when combined, allow for simultaneous returns over extensive regions of the polar caps and midlatitudes.
Externí odkaz:
https://doaj.org/article/dd15b92018a64fa0919a2d6aaaefac0f
Autor:
A. D. M. Walker, G. J. Sofko
Publikováno v:
Annales Geophysicae, Vol 34, Pp 55-65 (2016)
When studying magnetospheric convection, it is often necessary to map the steady-state electric field, measured at some point on a magnetic field line, to a magnetically conjugate point in the other hemisphere, or the equatorial plane, or at the
Externí odkaz:
https://doaj.org/article/4b56c784745f4c3c9eaad6bbde81c779
Autor:
A. D. M. Walker
Publikováno v:
Annales Geophysicae, Vol 34, Pp 67-73 (2016)
A method of mapping electric fields along geomagnetic field lines is applied to the IGRF (International Geomagnetic Reference Field) model. The method involves integrating additional sets of first order differential equations simultaneously with
Externí odkaz:
https://doaj.org/article/2fba326dc30143469ac395c63f700e6e
Autor:
A. D. M. Walker
Publikováno v:
Annales Geophysicae, Vol 32, Pp 1495-1510 (2014)
Magnetohydrodynamic (MHD) waves in the solar wind and magnetosphere are propagated in a medium whose velocity is comparable to or greater than the wave velocity and which varies in both space and time. In the approximation where the scales of the
Externí odkaz:
https://doaj.org/article/f12005834f2643599f96cba7d08d2baf
Autor:
A. D. M. Walker, J. A. E. Stephenson
Publikováno v:
Annales Geophysicae, Vol 32, Pp 1217-1221 (2014)
A case study of a magnetohydrodynamic (MHD) wave in the solar wind that is strongly correlated with a magnetospheric field line resonance observed by the SuperDARN (Super Dual Auroral Radar Network) radar at Sanae, Antarctica is presented. The dat
Externí odkaz:
https://doaj.org/article/60088618a8fc4a1193d8fa37d79f4be1
Publikováno v:
Nonlinear Processes in Geophysics, Vol 21, Iss 2, Pp 505-519 (2014)
The mechanical response of a dense granular material submitted to indentation by a rigid flat punch is examined. The resultant deformation is viewed as a process of self-organisation. Four aspects of the mechanical response (i.e. indentation resistan
Externí odkaz:
https://doaj.org/article/b1e7ddb49c154cd5a8fcc745f75d8f24
Autor:
J. A. E. Stephenson, A. D. M. Walker
Publikováno v:
Annales Geophysicae, Vol 28, Pp 47-59 (2010)
Field line resonances have been observed for decades by ground-based and in situ instruments. The driving mechanism(s) are still unclear, although previous work has provided strong grounds that coherent waves in the solar wind may be a source. Her
Externí odkaz:
https://doaj.org/article/6cdd24c3abdd45c994491c5161372bac