Results 31 to 40 of about 3,416 (224)
Magnetic Fields in Galaxies [PDF]
, 2013 Most of the visible matter in the Universe is ionized, so that cosmic magnetic fields are quite easy to generate and due to the lack of magnetic monopoles hard to destroy. Magnetic fields have been measured in or around practically all celestial objects, either by in-situ measurements of spacecrafts or by the electromagnetic radiation of embedded ...
Rainer Beck, Richard Wielebinski
openaire +1 more source
Dynamo in Weakly Collisional Nonmagnetized Plasmas Impeded by Landau Damping of Magnetic Fields [PDF]
, 2020 We perform fully kinetic simulations of flows known to produce dynamo in magnetohydrodynamics (MHD), considering scenarios with low Reynolds number and high magnetic Prandtl number, relevant for galaxy cluster scale fluctuation dynamos.
Brandenburg, Axel, +28 more
core +1 more source
On the Non-Thermal Energy Content of Cosmic Structures
Galaxies, 2016 (1) Background: the budget of non-thermal energy in galaxy clusters is not well constrained, owing to the observational and theoretical difficulties in studying these diluted plasmas on large scales; (2) Method: we use recent cosmological simulations ...
Franco Vazza +3 more
doaj +1 more source
The Evolution of Magnetic Fields in Galaxy Clusters [PDF]
Symposium - International Astronomical Union, 2003 Cosmological simulations of magnetic fields in galaxy clusters show that remarkable agreement between simulations and observations of Faraday rotation and radio haloes can be achieved assuming that seed fields of ∼ 10−9 G were present at redshifts ∼ 15−20. The structure of the seed field is irrelevant for the final intracluster field.
Bartelmann, M., Dolag, K., Lesch, H.
openaire +3 more sources
Magnetic Fields in Clusters of Galaxies
, 2005 to appear in "Magnetized plasma in galaxy evolution", 8 pages, 2 ...
Ensslin, T., Vogt, C., Pfrommer, C.
openaire +3 more sources
The halo magnetic field of a spiral galaxy at z = 0.414
Astronomy & AstrophysicsAims. Even though magnetic fields play an important role in galaxy evolution, the redshift evolution of galactic-scale magnetic fields is not well constrained observationally.
Kovacs Timea Orsolya +4 more
doaj +1 more source
The Galaxy Magnetic Field [PDF]
International Astronomical Union Colloquium, 1977 The origin and dynamics of magnetic fields depend crucially on the dynamics of a gas in the Galaxy. In turn the magnetic field is needed to isotropize the cosmic rays (the influence on chemistry) and is of importance for the formation of stars (local dynamics). Thus the appearance of this topic at the Colloquium is justified.
openaire +1 more source
MAGNETIC FIELDS IN COSMOLOGICAL SIMULATIONS OF DISK GALAXIES [PDF]
The Astrophysical Journal, 2014 Observationally, magnetic fields reach equipartition with thermal energy and cosmic rays in the interstellar medium of disk galaxies such as the Milky Way. However, thus far cosmological simulations of the formation and evolution of galaxies have usually neglected magnetic fields.
Pakmor R, Marinacci F, Springel V
openaire +2 more sources
Cosmic magnetic fields from density perturbations
, 2023 reservedMagnetic fields are observed on nearly all scales in the Universe, from stars and galaxies up to galaxy clusters and even beyond. The origin of cosmic magnetic fields remains an open question; however, a large class of models puts its origin in ...
PAVONE, ELISABETTA
core
The universality of the relation between magnetic fields and star formation in galaxies
Astronomy & AstrophysicsContext. The interstellar medium (ISM) is permeated by magnetic fields affecting gas dynamics and star formation. These magnetic fields have been observed to be related to the supernova-driven turbulence. However, whether this scaling is universal across
Belfiori Davide +3 more
doaj +1 more source