Results 21 to 30 of about 1,204 (229)

New Insights in Extragalactic Magnetic Fields

open access: yes, 2019
Book collecting all the conference proceedings of Focus Meeting 8 "New Insights in Extragalactic Magnetic Fields" at the XXXth IAU General Assembly in Vienna, 2018.
Feretti, Luigina   +2 more
openaire   +3 more sources

Extragalactic jets with helical magnetic fields: relativistic MHD simulations [PDF]

open access: yesAstronomy & Astrophysics, 2008
Extragalactic jets are inferred to harbor dynamically important, organized magnetic fields which presumably aid in the collimation of the relativistic jet flows. We here explore by means of grid-adaptive, high resolution numerical simulations the morphology of AGN jets pervaded by helical field and flow topologies.
Keppens, R.   +3 more
openaire   +6 more sources

Extragalactic electromagnetic cascades and cascade gamma-ray emission in magnetic fields of various strength [PDF]

open access: green, 2023
We discuss the magnetic field influence on diffuse gamma-ray emission from extragalactic electromagnetic cascades initiated by ultra-high energy cosmic rays.
A. V. Uryson
openalex   +3 more sources

Constraints on UHECR Sources and Extragalactic Magnetic Fields from Directional Anisotropies

open access: yesThe Astrophysical Journal
A dipole anisotropy in ultra–high-energy cosmic ray (UHECR) arrival directions, of extragalactic origin, is now firmly established at energies E > 8 EeV.
Teresa Bister, Glennys R. Farrar
doaj   +2 more sources

Lower bound on the local extragalactic magnetic field [PDF]

open access: greenPhysical Review D, 2001
Assuming that the hard gamma-ray emission of Cen A is a result of synchrotron radiation of ultra-relativistic electrons, we derive a lower bound on the local extragalactic magnetic field, $B> 10^{-8}$ G. This result is consistent with (and close to) upper bounds on magnetic fields derived from consideration of cosmic microwave background distortions
Luis A. Anchordoqui, Haim Goldberg
openalex   +4 more sources

Galactic and Extragalactic Magnetic Fields [PDF]

open access: greenAIP Conference Proceedings, 2008
20 pages with 7 figures, "The Astrophysics of Galactic Cosmic Rays", eds. R.
Rainer Beck   +3 more
openalex   +6 more sources

Galactic and extragalactic magnetic fields – a concise review [PDF]

open access: hybridAstrophysics and Space Sciences Transactions, 2009
The strength of the total magnetic field in our Milky Way from radio synchrotron measurements is about 6 µG (0.6 nT), averaged over a radius of about 1 kpc around the Sun. Diffuse polarized radio emission and Faraday rotation of the polarized emission from pulsars and background sources show many small-scale magnetic features, but the overall ...
R. Beck
openalex   +3 more sources

UHCR and extragalactic magnetic fields [PDF]

open access: goldProceedings of International Workshop on Astroparticle and High Energy Physics — PoS(AHEP2003), 2003
Todor Stanev
openalex   +2 more sources

A NEW MODEL FOR GAMMA-RAY CASCADES IN EXTRAGALACTIC MAGNETIC FIELDS [PDF]

open access: bronzeThe Astrophysical Journal, 2011
5 pages, 5 figures, accepted for publication in Astrophysical Journal ...
H. Huan   +3 more
openalex   +4 more sources

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