Results 111 to 120 of about 3,416 (224)

Observations of Magnetic Fields in Galaxies [PDF]

Highlights of Astronomy, 1992
AbstractMagnetic fields are present in every corner of the Universe. The Earth, the Sun and most of the planets are known to possess dipolar magnetic fields. In the Galaxy many individual objects like stars, pulsars, bipolar nebulae and supernova remnants are found to have associated magnetic fields.
openaire   +1 more source

Evolving turbulence and magnetic fields in Galaxy clusters

, 2006
We discuss, using simple analytical models and magnetohydrodynamic (MHD) simulations, the origin and parameters of turbulence and magnetic fields in galaxy clusters.
Subramanian, Kandaswamy, Shukurov, Anvar, Haugen, Nils Erland L.   +2 more
core   +1 more source

Magnetic Field of the Quasar 1604+159 from Parsec to Kiloparsec Scale

The Astrophysical Journal
We present a multifrequency polarimetric study for the quasar 1604+159. The source was observed at the L band with the American Very Long Baseline Array and the L , X , and U bands with the Very Large Array.
Xu-Zhi Hu, Xiaoyu Hong, Wei Zhao, Liang Chen, Wei-Yang Wang, Linhui Wu   +5 more
doaj   +1 more source

Dark matter and generation of galactic magnetic fields [PDF]

, 2013
A new scenario for creation of galactic magnetic fields is proposed which is operative at the cosmological epoch of the galaxy formation, and which relies on unconventional properties of dark matter. Namely, it requires existence of feeble but long range
A. D. Dolgov, BEREJIANI, ZOURAB, I. I. Tkachev, Zurab Berezhiani   +3 more
core   +1 more source

The Coherent Magnetic Field of the Milky Way

The Astrophysical Journal
We present a suite of models of the coherent magnetic field of the Galaxy based on new divergence-free parametric functions describing the global structure of the field.
Michael Unger, Glennys R. Farrar
doaj   +1 more source

A Multiwavelength Portrait of the 3C 220.3 Lensed System

The Astrophysical Journal
The 3C 220.3 system is a rare case of a foreground narrow-line radio galaxy (“galaxy A,” z _A = 0.6850) lensing a background submillimeter galaxy ( z _SMG = 2.221).
Sóley Ó. Hyman, Belinda J. Wilkes, S. P. Willner, Joanna Kuraszkiewicz, Mojegan Azadi, D. M. Worrall, Adi Foord, Simona Vegetti, Matthew L. N. Ashby, Mark Birkinshaw, Christopher Fassnacht, Martin Haas, Daniel Stern   +12 more
doaj   +1 more source

The origin and dynamic interaction of solar magnetic fields [PDF]

, 2007
The dynamics of the solar corona are dominated by the magnetic field which creates its structure. The magnetic field in most of the corona is ‘frozen’ to the plasma very effectively.
Antonia Wilmot-Smith, Wilmot-Smith, Antonia, Wilmot-Smith, A.L.   +2 more
core  

Magnetism in the spiral galaxy NGC 6946: magnetic arms, depolarization rings, dynamo modes, and helical fields

, 2007
Context.The spiral galaxy NGC 6946 hosts magnetic spiral arms, highly aligned magnetic fields between the gas/optical arms. Aims.The origin of the magnetic phenomena and their relation to the interstellar gas are investigated. Methods.NGC 
R. Beck
core   +1 more source

MEDUSA

Astronomy & Astrophysics
Context. Radio continuum observations of dwarf–dwarf galaxy mergers, such as NGC 1487, provide crucial insights into magnetic field amplification and cosmic ray (CR) propagation during galactic assembly.
Taziaux Sam, Basu Aritra, Das Samata, Bomans Dominik J., Galvin Timothy J., Thomson Alec J. M., Heald George H., Kamphuis Peter, Loi Francesca, Stein Michael, Chyży Krysztof T., Riseley Christopher J., Dettmar Ralf-Jürgen, Becker Tjus Julia   +13 more
doaj   +1 more source

Galactic magnetic fields and hierarchical galaxy formation

A framework is introduced for coupling the evolution of galactic magnetic fields sustained by the mean-field dynamo with the formation and evolution of galaxies in cold dark matter cosmology.
Shukurov A, Rodrigues LFS, Fletcher A, Baugh CM   +3 more
core