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Recent numerical simulations of the interstellar medium driven by energy input from supernovae and stellar winds indicate that HI clouds can be formed by compression in shock waves and colliding turbulent streams without any help from…

Astrophysics · Physics 2007-05-23 Anvar Shukurov

We present the results of a variety of simulations concerning the evolution of multiphase (inhomogeneous) hot interstellar medium (ISM) in elliptical galaxies. We assume the gases ejected from stars do not mix globally with the…

Astrophysics · Physics 2009-10-30 Yutaka Fujita , Junji Fukumoto , Katsuya Okoshi

We explore the structure and statistics of multiphase, magnetized ISM turbulence in the local Milky Way by means of driven periodic box numerical MHD simulations. Using the higher order-accurate piecewise-parabolic method on a local stencil…

Astrophysics of Galaxies · Physics 2017-06-19 Alexei G. Kritsuk , Sergey D. Ustyugov , Michael L. Norman

This paper develops an analytical framework for the retarding forces on macroscopic spherical probes travelling through the interstellar medium (ISM) at relativistic speeds (0.1c to 0.99c). Integrating the aberrated momentum flux of both…

Space Physics · Physics 2026-04-02 Lucky Gangwar

A star in the Milky Way's disk can now be at a Galactocentric radius quite distant from its birth radius for two reasons: either its orbit has become eccentric through radial heating, which increases its radial action $J_R$ (`blurring'); or…

Astrophysics of Galaxies · Physics 2020-06-17 Neige Frankel , Jason Sanders , Yuan-Sen Ting , Hans-Walter Rix

High-resolution, 2-D hydrodynamical simulations with a large dynamic range are performed to study the turbulent nature of the interstellar medium (ISM) in galactic disks. The simulations are global, where the self-gravity of the ISM,…

Astrophysics · Physics 2008-11-26 Keiichi Wada , Gerhardt Meurer , Colin A. Norman

The dynamics of the intracluster medium (ICM) is affected by turbulence driven by several processes, such as mergers, accretion and feedback from active galactic nuclei. X-ray surface brightness fluctuations have been used to constrain…

Cosmology and Nongalactic Astrophysics · Physics 2022-03-14 Marco Simonte , Franco Vazza , Fabrizio Brighenti , Marcus Brueggen , Tom W. Jones

We introduce the star formation and Supernova (SN) feedback model of the SATIN (Simulating AGNs Through ISM with Non-Equilibrium Effects) project to simulate the evolution of the star forming multi-phase interstellar medium (ISM) of entire…

Astrophysics of Galaxies · Physics 2023-06-28 Rebekka Bieri , Thorsten Naab , Sam Geen , Jonathan P. Coles , Rüdiger Pakmor , Stefanie Walch

We review recent results from numerical simulations and related models of MHD turbulence in the interstellar medium (ISM) and in molecular clouds. We discuss the implications of turbulence for the processes of cloud formation and evolution,…

Astrophysics · Physics 2007-05-23 E. Vazquez-Semadeni , E. C. Ostriker , T. Passot , C. F. Gammie , J. M. Stone

We perform three-dimensional self-gravitating radiative transfer simulations of protoplanet migration in circumstellar discs to explore the impact upon migration of the radial temperature profiles in these discs. We model protoplanets with…

Earth and Planetary Astrophysics · Physics 2015-05-27 Ben A. Ayliffe , Matthew R. Bate

The interstellar medium (ISM) of disk galaxies is turbulent, and yet the fundamental nature of ISM turbulence, the energy cascade, is not understood in detail. In this study, we use high-resolution simulations of a hydrodynamical,…

Astrophysics of Galaxies · Physics 2025-09-16 James R. Beattie , Anne Noer Kolborg , Enrico Ramirez-Ruiz , Christoph Federrath

We present 50 individual measurements of the gas temperature and turbulent velocity in the local interstellar medium (LISM) within 100 pc. By comparing the absorption line widths of many ions with different atomic masses, we can…

Astrophysics · Physics 2009-11-10 Seth Redfield , Jeffrey L. Linsky

The interstellar medium (ISM) consists of a multiphase gas, including the warm neutral medium (WNM), the unstable neutral medium (UNM), and the cold neutral medium (CNM). While significant attention has been devoted to understanding the WNM…

Astrophysics of Galaxies · Physics 2025-05-13 Yue Hu

Magnetic fields are an important component of the interstellar medium (ISM) of galaxies. The thermal gas in the ISM has a multiphase structure, broadly divided into ionised, atomic, and molecular phases. The connection between the…

Astrophysics of Galaxies · Physics 2025-04-01 Amit Seta , N. M. McClure-Griffiths

The impact of viscosity in the Intracluster Medium (ICM) is still an open question in astrophysics. To address this problem, we have run a set of cosmological simulations of three galaxy clusters with a mass larger than $M_{\mathrm{Vir}} >…

Cosmology and Nongalactic Astrophysics · Physics 2024-11-14 Tirso Marin-Gilabert , Ulrich P. Steinwandel , Milena Valentini , David Vallés-Pérez , Klaus Dolag

We present high resolution simulations on the impact of ionizing radiation of massive O-stars on the surrounding turbulent interstellar medium (ISM). The simulations are performed with the newly developed software iVINE which combines…

Solar and Stellar Astrophysics · Physics 2009-11-13 Matthias Gritschneder , Thorsten Naab , Stefanie Walch , Andreas Burkert , Fabian Heitsch

In this paper we investigate how convective instabilities influence heat conduction in the intracluster medium (ICM) of cool-core galaxy clusters. The ICM is a high-beta, weakly collisional plasma in which the transport of momentum and heat…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Henrik N. Latter , Matthew W. Kunz

Galactic outflows produced by stellar feedback are known to be multiphase in nature. Both observations and simulations indicate that the material within several kpc of galactic disk mid-planes consists of warm clouds embedded within a hot…

Astrophysics of Galaxies · Physics 2020-05-06 Aditi Vijayan , Chang-Goo Kim , Lucia Armillotta , Eve C. Ostriker , Miao Li

I present an overview of the hierarchy of structures existing in the interstellar medium (ISM) and the possible mechanisms that cause the fragmentation of one level into the next, with the formation of stars as its last step. Within this…

Astrophysics · Physics 2009-11-10 Enrique Vazquez-Semadeni

In the intracluster medium (ICM) of galaxy clusters, heat and momentum are transported almost entirely along (but not across) magnetic field lines. We perform the first fully self-consistent Braginskii-MHD simulations of galaxy clusters…

Cosmology and Nongalactic Astrophysics · Physics 2012-03-06 Ian J. Parrish , Michael McCourt , Eliot Quataert , Prateek Sharma
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