Results 1 to 10 of about 11,871 (158)
Primordial helical magnetic fields from inflation? [PDF]
Physical Review D, 2022 24+15 pages, 6 figures, 5 appendices,new references added, match the published ...
Hassan Firouzjahi, Alireza Talebian
exaly +3 more sources
Magnetized relativistic jets and helical magnetic fields
Astronomy and Astrophysics, 2021 This is the second of a series of two papers that deepen our understanding of the transversal structure and the properties of recollimation shocks of axisymmetric, relativistic, superfast magnetosonic, overpressured jets. They extend previous work that characterized these properties in connection with the dominant type of energy (internal, kinetic, or ...
Antonio Fuentes +2 more
exaly +5 more sources
Helical magnetic fields from Riemann coupling [PDF]
Physical Review D, 2020 We study the inflationary generation of helical magnetic fields from the Riemann coupling with the electromagnetic field. Most models in the literature introduce non-minimal coupling to the electromagnetic fields with a scalar field, hence, breaking the conformal invariance.
Ashu Kushwaha, S Shankaranarayanan
exaly +3 more sources
Microscopic Processes in Global Relativistic Jets Containing Helical Magnetic Fields
Galaxies, 2016 In the study of relativistic jets one of the key open questions is their interaction with the environment on the microscopic level. Here, we study the initial evolution of both electron–proton ( e − – p + ) and electron–positron ( e ± )
Ken-Ichi Nishikawa +13 more
doaj +3 more sources
Galaxies, 2017 In this study, we investigate the interaction of jets with their environment at a microscopic level, which is a key open question in the study of relativistic jets.
Ken-Ichi Nishikawa +14 more
doaj +3 more sources
Magnetic Helical Micro- and Nanorobots: Toward Their Biomedical Applications
Engineering, 2015 Magnetic helical micro- and nanorobots can perform 3D navigation in various liquids with a sub-micrometer precision under low-strength rotating magnetic fields (
Famin Qiu, Bradley J. Nelson
doaj +3 more sources
Searching for primordial helical magnetic fields [PDF]
Physical Review D, 2020 10 pages, 14 png figures; v2: improved quality of the figures, matches published ...
Kachelriess, M., Martinez, B. C.
exaly +3 more sources
Fabrication of anisotropic magnetic helical microswimmers utilizing Spirulina platensis templates and their integration with Janus PCL/Chitosan nanoparticles [PDF]
Scientific ReportsMagnetically-actuated microswimmers are promising candidates for controlled cargo transport and microscale manipulation; however, achieving efficient, fuel-free propulsion with precisely defined anisotropic structures remains a significant fabrication ...
Mahdieh Jahani +2 more
doaj +2 more sources
Magnetic Helicity and the Relaxation of Fossil Fields [PDF]
Monthly Notices of the Royal Astronomical Society, 2007 Astronomy
Broderick, Avery E., Narayan, Ramesh
openaire +5 more sources
Field linkage and magnetic helicity density
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT The helicity of a magnetic field is a fundamental property that is conserved in ideal MHD. It can be explored in the stellar context by mapping large-scale magnetic fields across stellar surfaces using Zeeman–Doppler imaging. A recent study of 51 stars in the mass range 0.1–1.34 M⊙ showed that the photospheric magnetic helicity ...
Lund, K +10 more
openaire +6 more sources