Results 141 to 150 of about 1,731,437 (208)

The Interaction of a Supernova Remnant with Background Interstellar Turbulence

The Astrophysical Journal Supplement Series
Supernova explosions are among the most energetic events in the Universe. After the explosion, the material ejected by the supernova expands throughout the interstellar medium (ISM), forming what is called a supernova remnant (SNR). The shocks associated
Giuseppe Prete, Silvia Perri, Claudio Meringolo, Leonardo Primavera, Sergio Servidio   +4 more
doaj   +1 more source

Cosmic-Ray Acceleration of Galactic Outflows in Multiphase Gas

The Astrophysical Journal
We investigate the dynamical interaction between cosmic rays (CRs) and the multiphase interstellar medium (ISM) using numerical magnetohydrodynamic (MHD) simulations with a two-moment CR solver and TIGRESS simulations of star-forming galactic disks.
Lucia Armillotta, Eve C. Ostriker, Chang-Goo Kim, Yan-Fei Jiang   +3 more
doaj   +1 more source

Simulations of cosmic ray propagation. [PDF]

Living Rev Comput Astrophys, 2021
Hanasz M, Strong AW, Girichidis P.
europepmc   +1 more source

The Impact of Enhanced Extreme-ultraviolet Flux on the Upper Atmosphere of Earth-like Exoplanets

The Astrophysical Journal
Identifying Earth-like planets outside our solar system is a leading research goal in astronomy, but determining if candidate planets have atmospheres, and more importantly if they can retain atmospheres, is still out of reach.
Lukas Hanson, Ofer Cohen, Aaron J. Ridley, Alex Glocer   +3 more
doaj   +1 more source

Odd Radio Circles Modeled by Shock-bubble Interactions

The Astrophysical Journal
The physical nature and origins of the newly discovered class of Odd Radio Circles (ORCs) remain unclear. We investigate a model whereby ORCs are synchrotron-emitting vortex rings formed by the Richtmyer–Meshkov instability (RMI) when a shock interacts ...
Yiting Wang, Sebastian Heinz
doaj   +1 more source

Unstable magnetohydrodynamical continuous spectrum of accretion disks - A new route to magnetohydrodynamical turbulence in accretion disks

, 2007
Context.We present a detailed study of localised magnetohydrodynamical (MHD) instabilities occurring in two-dimensional magnetized accretion disks. Aims.We model axisymmetric MHD disk tori, and solve the equations governing a two-dimensional ...
Keppens, R., Blokland, J. W. S., J. P. Goedbloed, J. W. S. Blokland, Goedbloed, J. P., R. Keppens   +5 more
core   +1 more source

Effects of Dynamo-generated Large-scale Magnetic Fields on the Surface Gravity (f) Mode

The Astrophysical Journal Letters
By modeling the upper layers of the Sun in terms of a two-layer setup where a free surface exists within the computational domain, we numerically study the interaction between the surface gravity, or the fundamental ( f ) mode, and the magnetic fields ...
Rajesh Mondal, Nishant K. Singh
doaj   +1 more source

Cosmic-Ray Feedback on Bistable Interstellar Medium Turbulence

The Astrophysical Journal
While cosmic rays ( E ≳ 1 GeV) are well coupled to a galaxy’s interstellar medium (ISM) at scales of L > 100 pc, adjusting stratification and driving outflows, their impact on small scales is less clear.
Roark Habegger, Ka Wai Ho, Ka Ho Yuen, Ellen G. Zweibel   +3 more
doaj   +1 more source

Representation of hydrogen atoms in molecular dynamics simulations : the influence on the computed properties of thin polystyrene films

, 2011
The united atoms (UA) and dummy hydrogen atom (DHA) approaches for molecular dynamics simulations of the interface between oxidized atactic polystyrene (aPS) thin films and water are compared.
Lyulin, A.V.; id_orcid, Gerasimov, RA, Muntean, S.A., Lyulin, A.V., Wedershoven, M.J.M., Stela Andrea Muntean, Gerasimov, R.A., Alexey V. Lyulin, Muntean, SA Andrea, Roman A. Gerasimov, Lyulin, Alexey V.,, Wedershoven, MJM, Lyulin, A Alexey, Muntean, Stela Andrea,, Hubertus M. J. M. Wedershoven, Gerasimov, Roman A.,, Wedershoven, Hubertus M. J. M.,   +16 more
core   +1 more source

Forming Prominences Accounting for Partial Ionization Effects

The Astrophysical Journal
One of the most striking structures in the solar atmosphere are prominences, predominantly coronal structures, with thermodynamic conditions that vary from chromospheric internally to the corona that surrounds them.
V. Jerčić, B. Popescu Braileanu, R. Keppens   +2 more
doaj   +1 more source