Results 111 to 120 of about 3,496,469 (217)

Reconstructing magnetic fields of spiral galaxies from radiopolarimetric observations [PDF]

, 2015
We live in a magnetic universe with magnetic fields spanning an enormous range of spatial and temporal scales. In particular, magnetic fields at the scale of a galaxy are known as galactic magnetic fields and are the focus of this PhD thesis.
Shneider, C.
core  

The large-scale ordered magnetic field in the Galactic halo and the Local Bubble

Astronomy & Astrophysics
Context. All-sky synchrotron polarization observations are the primary probe of the Galactic large-scale ordered magnetic field, which includes both coherent and ordered random components.
Orlando Elena
doaj   +1 more source

Galactic Magnetic Fields. I. Theoretical Model and Scaling Relations

The Astrophysical Journal
Galactic dynamo models have generally relied on input parameters that are very challenging to constrain. We address this problem by developing a model that uses observable quantities as input: the galaxy rotation curve, the surface densities of the gas ...
Luke Chamandy, Rion Glenn Nazareth, Gayathri Santhosh   +2 more
doaj   +1 more source

Origin of the Magnetic Field of the Galaxy

The Astrophysical Journal, 1969
Galactic magnetic field origin from galactic turbulence, calculating individual Fourier components in random turbulent ...
openaire   +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

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

On the Magnetic Field of the Galaxy [PDF]

Monthly Notices of the Royal Astronomical Society, 1960
F. Hoyle, J. G. Ireland
openaire   +1 more source

Quasiperiodic Eruptions from Recurrent Satellite Black Hole Transits through Magnetized Galactic Nucleus Accretion Disks

The Astrophysical Journal Letters
Quasiperiodic eruptions (QPEs) are recurrent soft X-ray flares from galactic nuclei, but their origin remains uncertain. The delayed ultraviolet (UV) counterpart detected in ZTF19acnskyy provides a new constraint on viable models.
Na Wang, Jing-Tong Xing, Tong Liu, Ya-Ping Li, Shuang-Liang Li   +4 more
doaj   +1 more source

The MeerKAT Fornax Survey

Astronomy & Astrophysics
Large-scale magnetic fields in galaxy clusters can influence their physics and the evolution of cluster-embedded galaxies. These properties remain poorly constrained due to a historical lack of high-sensitivity and high-resolution spectropolarimetric ...
Loi F., Murgia M., Govoni F., Serra P., Vacca V., Maccagni F. M., Kamphuis P., Kleiner D.   +7 more
doaj   +1 more source