English
Related papers

Related papers: HI Density Distribution Driven by Supernovae: A Si…

200 papers

We present a hydrodynamical simulation of the turbulent, magnetized, supernova (SN)-driven interstellar medium (ISM) in a stratified box that dynamically couples the injection and evolution of cosmic rays (CRs) and a self-consistent…

Density is the turbulence statistics that is most readily available from observations. Different regimes of turbulence correspond to different density spectra. For instance, the viscosity-damped regime of MHD turbulence relevant, for…

Astrophysics · Physics 2008-01-03 A. Lazarian , G. Kowal , A. Beresnyak

We explore the effect of magnetic fields on the vertical distribution and multiphase structure of the supernova-driven interstellar medium (ISM) in simulations that admit dynamo action. As the magnetic field is amplified to become…

Astrophysics of Galaxies · Physics 2019-09-26 C. C. Evirgen , F. A. Gent , A. Shukurov , A. Fletcher , P. J. Bushby

(Abridged) We use the statistical tool known as the ``Spectral Correlation Function" [SCF] to intercompare simulations and observations of the atomic interstellar medium. The simulations considered mimic three distinct sets of physical…

A number of Type I (hydrogenless) superluminous supernova (SLSN) events have been discovered recently. However, their nature remains debatable. One of the most promising ideas is the shock-interaction mechanism, but only simplified…

High Energy Astrophysical Phenomena · Physics 2016-09-21 Elena Sorokina , Sergei Blinnikov , Ken'ichi Nomoto , Robert Quimby , Alexey Tolstov

The Hydrodynamics of Superfluid Turbulence (HST) describes the flows (or counterflows) of HeII in the presence of a chaotic set of vortex filaments, so called superfluid turbulence. The HST equations govern both a slow variation of the…

Other Condensed Matter · Physics 2007-05-23 Sergey K. Nemirovskii , Sergey A. Ponomarenko

As a first step to a more complete understanding of the local physical processes which determine star formation rates (SFRs) in the interstellar medium (ISM), we have performed controlled numerical experiments consisting of hydrodynamical…

Astrophysics · Physics 2009-11-10 A. Slyz , J. Devriendt , Greg Bryan , Joseph Silk

Explaining the observed diversity of supernovae (SNe) and the physics of explosion requires knowledge of their progenitor stars, which can be obtained by constraining the circumstellar medium (CSM). Models of the SN ejecta colliding with…

High Energy Astrophysical Phenomena · Physics 2020-05-20 Chelsea E. Harris , Peter E. Nugent

Numerical hydrodynamical modelling of supernova-driven shell formation is performed with a purpose to reproduce a giant HI ring (diameter 1.7 kpc) in the dwarf irregular galaxy Holmberg I (Ho I). We find that the contrast in HI surface…

Astrophysics · Physics 2009-11-10 E. I. Vorobyov , U. Klein , Yu. A. Shchekinov , J. Ott

Highly supersonic, compressible turbulence is thought to be of tantamount importance for star formation processes in the interstellar medium. Likewise, cosmic structure formation is expected to give rise to subsonic turbulence in the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Andreas Bauer , Volker Springel

Supernovae are the dominant energy source for driving turbulence within the interstellar plasma. Until recently, their effects on magnetic field amplification in disk galaxies remained a matter of speculation. By means of self-consistent…

Astrophysics · Physics 2009-11-13 Oliver Gressel , Udo Ziegler , Detlef Elstner , Günther Rüdiger

We present high-resolution hydrodynamical simulations of isolated dwarf galaxies including self-gravity, non-equilibrium cooling and chemistry, interstellar radiation fields (IRSF) and shielding, star formation, and stellar feedback. This…

Astrophysics of Galaxies · Physics 2017-08-23 Chia-Yu Hu , Thorsten Naab , Simon C. O. Glover , Stefanie Walch , Paul C. Clark

We study the impact of stellar feedback in shaping the density and velocity structure of neutral hydrogen (HI) in disc galaxies. For our analysis, we carry out $\sim 4.6$pc resolution $N$-body+adaptive mesh refinement (AMR) hydrodynamic…

Astrophysics of Galaxies · Physics 2017-01-18 Kearn Grisdale , Oscar Agertz , Alessandro B. Romeo , Florent Renaud , Justin I. Read

Observations give evidences of the presence of metals in the intergalactic medium (IGM). The stars responsible for transforming hydrogen and helium into more complex atoms do not form outside the galaxies in the standard scenario of galaxy…

Astrophysics · Physics 2009-11-11 Yohan Dubois , Romain Teyssier

We use three-dimensional numerical hydrodynamic simulations of the turbulent, multiphase atomic interstellar medium (ISM) to construct and analyze synthetic HI 21 cm emission and absorption lines. Our analysis provides detailed tests of 21…

Astrophysics of Galaxies · Physics 2015-06-19 Chang-Goo Kim , Eve C. Ostriker , Woong-Tae Kim

We present a spatially dependent framework for the existence and propagation of nonlinear kinetic Alfv\'en (KA) structures in the interstellar medium (ISM). Using a multi-component analytical model that incorporates the diffuse warm ionized…

Plasma Physics · Physics 2026-02-12 Manpreet Singh , Siming Liu , N. S. Saini

Condensation of H 2 in the interstellar medium (ISM) has long been seen as a possibility, either by deposition on dust grains or thanks to a phase transition combined with self-gravity. H 2 condensation might explain the observed low…

Astrophysics of Galaxies · Physics 2018-06-06 Andreas Füglistaler , Daniel Pfenniger

Supernova explosions and their remnants (SNRs) drive important feedback mechanisms that impact considerably the galaxies that host them. Then, the knowledge of the SNRs evolution is of paramount importance in the understanding of the…

Astrophysics of Galaxies · Physics 2019-06-26 Santiago Jimenez , Guillermo Tenorio-Tagle , Sergiy Silich

We perform numerical hydrodynamic modeling of various physical processes that can form an HI ring as is observed in Holmberg I. Three energetic mechanisms are considered: multiple supernova explosions (SNe), a hypernova explosion associated…

Astrophysics · Physics 2009-11-10 E. I. Vorobyov , Shantanu Basu

Type Ia supernovae (SNe Ia) provide unique and important feedback in quiescent galaxies, but their impact has been underappreciated. In this paper, we analyze a series of high-resolution simulations to examine the energetics and turbulence…

Astrophysics of Galaxies · Physics 2020-07-29 Miao Li , Yuan Li , Greg L. Bryan , Eve C. Ostriker , Eliot Quataert
‹ Prev 1 4 5 6 7 8 10 Next ›