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We perform calculations of isolated disc galaxies to investigate how the properties of the ISM, the nature of molecular clouds, and the global star formation rate depend on the level of stellar feedback. We adopt a simple physical model,…

Astrophysics of Galaxies · Physics 2015-05-28 C. L. Dobbs , A. Burkert , J. E. Pringle

Recent studies show the importance of feedback in the evolution of the star formation rate in the Universe. However, the nature and physics of the feedback are still pressing questions. Radio continuum observations can provide unique…

Astrophysics of Galaxies · Physics 2016-04-20 F. S. Tabatabaei , J. Braine , C. Kramer , E. Schinnerer , J. Beckman , J. Knapen

Feedback from supernovae is often invoked as an important process in limiting star formation, removing gas from galaxies and hence as a determining process in galaxy formation. Here we report on numerical simulations investigating the…

Astrophysics of Galaxies · Physics 2020-02-19 William E. Lucas , Ian A. Bonnell , James E. Dale

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

Feedback from massive stars is thought to play an important role in the evolution of molecular clouds. In this work we analyse the effects of stellar winds and supernovae (SNe) in the evolution of two massive ($\sim 10^6\,M_\odot$) giant…

Astrophysics of Galaxies · Physics 2016-10-11 Ramon Rey-Raposo , Clare Dobbs , Oscar Agertz , Christian Alig

Substructure in the interstellar medium (ISM) is crucial for establishing the correlation between star formation and feedback and has the capacity to significantly perturb stellar orbits, thus playing a central role in galaxy dynamics and…

Astrophysics of Galaxies · Physics 2026-02-06 Shaunak Modak , Eve C. Ostriker , Chris Hamilton , Scott Tremaine

Supernovae (SNe) drive multiphase galactic outflows, impacting galaxy formation; however, cosmological simulations mostly use \textit{ad hoc} feedback models for outflows, making outflow-related predictions from first principles…

Astrophysics of Galaxies · Physics 2020-03-04 Miao Li , Greg L. Bryan

The evolution of supernova remnants (SNRs) is studied, with particular attention to the effect of magnetic fields with axisymmetric two-dimensional magnetohydrodynamical simulations. The evolution of magnetic SNRs is the same as…

Astrophysics · Physics 2009-11-13 Hidekazu Hanayama , Kohji Tomisaka

We use three-dimensional magnetohydrodynamic (MHD) simulations to investigate the quasi-equilibrium states of galactic disks regulated by star formation feedback. We incorporate effects from massive-star feedback via time-varying heating…

Astrophysics of Galaxies · Physics 2017-01-11 Chang-Goo Kim , Eve C. Ostriker

(Abridged) Heating of the interstellar medium by multiple supernovae (SNe) explosions is at the heart of producing galaxy-scale outflows. We use hydrodynamical simulations to study the efficiency of multiple SNe in heating the interstellar…

Astrophysics of Galaxies · Physics 2015-06-18 Evgenii O. Vasiliev , Biman B. Nath , Yuri Shchekinov

Supernova (SN) plays an important role in galaxy formation and evolution. In high-resolution galaxy simulations using massively parallel computing, short integration timesteps for SNe are serious bottlenecks. This is an urgent issue that…

Astrophysics of Galaxies · Physics 2023-09-19 Keiya Hirashima , Kana Moriwaki , Michiko S. Fujii , Yutaka Hirai , Takayuki R. Saitoh , Junichiro Makino

We explore the impact of diffusive cosmic rays (CRs) on the evolution of the interstellar medium (ISM) under varying assumptions of supernova explosion environment. In practice, we systematically vary the relative fractions of supernovae…

Astrophysics of Galaxies · Physics 2022-12-28 Christine M. Simpson , Rüdiger Pakmor , Christoph Pfrommer , Simon C. O. Glover , Rowan Smith

The feedback mechanisms triggered by supernova (SN) events and active galactic nuclei (AGN) play a central role in regulating the star formation and shaping galaxy properties. However, quantifying the impact and efficiency of these…

Astrophysics of Galaxies · Physics 2024-07-12 M. C. Zerbo , M. E. De Rossi , M. A. Lara-López , S. A. Cora , L. J. Zenocratti

Modern photometric surveys of the sky suggest that many, perhaps most supernovae (SNe) associated with the explosion of massive stars are influenced at an appreciable level by their interaction with circumstellar material (CSM). The…

Solar and Stellar Astrophysics · Physics 2024-05-08 Luc Dessart

Formation of luminous matter in the Universe is a complicated process, which includes many processes and components. It is the vastly different scales involved in the process (from star formation on few parsec scales to galaxy clusters and…

Astrophysics · Physics 2007-05-23 Anatoly Klypin , Stefan Gottlober , Gustavo Yepes

Supernovae (SN) explosions are thought to be an important source of dust in galaxies. At the same time strong shocks from SNe are known as an efficient mechanism of dust destruction via thermal and kinetic sputtering. A critically important…

Astrophysics of Galaxies · Physics 2023-12-11 Evgenii O. Vasiliev , Yuri A. Shchekinov

Supernova remnants (SNRs) are believed to be the major contributors to Galactic cosmic rays. The detection of non-thermal emission from SNRs demonstrates the presence of energetic particles, but direct signatures of protons and other ions…

High Energy Astrophysical Phenomena · Physics 2015-06-11 Gilles Ferrand , Anne Decourchelle , Samar Safi-Harb

The large-scale gradient of the interstellar medium (ISM) density distribution essentially affects the evolution of Supernova remnants (SNRs). In a non-uniform ISM, the shape of SNR becomes essentially non-spherical, and distributions of…

Astrophysics · Physics 2009-09-25 B. Hnatyk , O. Petruk

A supernova (SN) explosion drives stellar debris into the circumstellar material (CSM) filling a region on a scale of parsecs with X-ray emitting plasma. The velocities involved in supernova remnants (SNRs), thousands of km/s, can be…

Astrophysics of Galaxies · Physics 2015-05-20 Daniel Dewey

Core-collapse supernova (SN) explosions may occur in the highly inhomogeneous molecular clouds (MCs) in which their progenitors were born. We perform a series of 3-dimensional hydrodynamic simulations to model the interaction between an…

High Energy Astrophysical Phenomena · Physics 2018-10-17 Dong Zhang , Roger A. Chevalier