Results 71 to 80 of about 1,505 (162)

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

Exploring Magnetic Fields in a Merging Galaxy: Comparing Polarization and Velocity Gradient in the Centaurus Galaxy

The Astrophysical Journal
In this study, we apply the velocity gradient technique to the merging Centaurus galaxy. We compare gradient maps derived from the PHANGS-Atacama Large Millimeter/submillimeter Array survey using CO emission lines with magnetic field tracings from dust ...
Quynh Lan Nguyen, Yue Hu, Alex Lazarian
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

Magnetic fields in elliptical galaxies

, 2019
Slides presented for a talk at the "New Perspectives on Galactic Magnetism" conference in Newcastle Upon Tyne, UK, on 10 June 2019.
openaire   +1 more source

Magnetic fields in nearby galaxies

, 2011
14 pages, 4 figures, 2 tables. Review paper published in: "The dynamic interstellar medium: a celebration of the Canadian Galactic Plane Survey", 2010, Eds. R. Kothes, T.L. Landecker & A.G.
openaire   +2 more sources

A Pioneering Experiment Combining Single-antenna and Aperture-synthesis Data to Measure Faraday Rotation with GMIMS and the CGPS

The Astronomical Journal
Structures in the magnetoionic medium exist across a wide range of angular sizes owing to large-scale magnetic fields coherent over the Galactic spiral arms combined with small-scale fluctuations in the magnetic field and electron density resulting from ...
Anna Ordog, Jo-Anne C. Brown, T. L. Landecker, Alex S. Hill, Roland Kothes, Jennifer L. West, John M. Dickey, Marijke Haverkorn, Ettore Carretti, Alec J. M. Thomson, Andrea Bracco, D. A. Del Rizzo, Ryan R. Ransom, Robert I. Reid   +13 more
doaj   +1 more source

Disentangling Magnetic Fields in NGC 6946 with Wide-band Polarimetry

The Astrophysical Journal
We present λ 13 cm polarization observations of the nearby spiral galaxy NGC 6946 with the Westerbork Synthesis Radio Telescope (WSRT) to examine the nearside halo magnetic fields. Despite λ 13 cm exhibiting similar two-dimensional morphology as observed
A. L. Williams, G. Heald, E. M. Wilcots, E. G. Zweibel   +3 more
doaj   +1 more source

Interstellar Polarization Survey. V. Galactic Magnetic Field Tomography of the Spiral Arms Using Optical and Near-infrared Starlight Polarization

The Astronomical Journal
Interstellar linear polarization occurs when starlight passes through elongated dust grains aligned by interstellar magnetic fields. The observed polarization can come from different dust structures along the line of sight (LOS).
Y. Angarita, M. J. F. Versteeg, M. Haverkorn, V. Pelgrims, C. V. Rodrigues, A. M. Magalhães, R. Santos-Lima, Koji S. Kawabata   +7 more
doaj   +1 more source

Magnetic fields in evolving galaxies

, 2019
Slides presented for talk at the "New Perspectives on Galactic Magnetism" conference in Newcastle, UK, on 13 June 2019.
openaire   +1 more source

Discovery of Diffuse Radio Emission in a Massive z = 1.709 Cool Core Cluster: A Candidate Radio Minihalo

The Astrophysical Journal Letters
Clusters of galaxies host spectacular diffuse radio sources, extending over scales from 100 kpc to several Mpcs. These sources, with extremely faint surface brightness ( μ Jy/arcsec ^2 level), are not tied to individual galaxies but trace synchrotron ...
Julie HLavacek-Larrondo, Roland Timmerman, Christoph Pfrommer, Erik Osinga, Larissa Tevlin, Tracy M. A. Webb, Natalia Martorella, Xiaoyuan Zhang, Reinout van Weeren, Hyunseop Choi, Gabriella Di Gennaro, Marie-Lou Gendron-Marsolais, Carter Rhea   +12 more
doaj   +1 more source