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Related papers: Supernova feedback in numerical simulations of gal…

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We investigate the generation of galactic outflows by supernova feedback in the context of SPH cosmological simulations. We use a modified version of the code GADGET-2 which includes chemical enrichment and energy feedback by Supernova. We…

Supernova (SN) feedback plays a crucial role in simulations of galaxy formation. Because blastwaves from individual SNe occur on scales that remain unresolved in modern cosmological simulations, SN feedback must be implemented as a subgrid…

We investigate phenomenological models of star formation and supernova feedback in N-body/SPH simulations of galaxy formation. First, we compare different prescriptions in the literature for turning cold gas into stars neglecting feedback…

Astrophysics · Physics 2009-11-06 Scott T. Kay , Frazer R. Pearce , Carlos S. Frenk , Adrian Jenkins

Stellar feedback plays a key role in galaxy formation by regulating star formation, driving interstellar turbulence and generating galactic scale outflows. Although modern simulations of galaxy formation can resolve scales of 10-100 pc,…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Oscar Agertz , Andrey V. Kravtsov , Samuel N. Leitner , Nickolay Y. Gnedin

The Feedback In Realistic Environments (FIRE) project explores feedback in cosmological galaxy formation simulations. Previous FIRE simulations used an identical source code (FIRE-1) for consistency. Motivated by the development of more…

We study the effects of Supernova (SN) feedback on the formation of galaxies using hydrodynamical simulations in a Lambda-CDM cosmology. We use an extended version of the code GADGET-2 which includes chemical enrichment and energy feedback…

Cosmological simulations make use of sub-grid recipes for the implementation of galactic winds driven by massive stars because direct injection of supernova energy in thermal form leads to strong radiative losses, rendering the feedback…

Astrophysics of Galaxies · Physics 2015-06-04 Claudio Dalla Vecchia , Joop Schaye

We numerically simulate some of the most critical physical processes in galaxy formation: The supernova feedback, in conjunction with gasdynamics and gravity, plays a crucial role in determining how galaxies arise within the context of a…

Astrophysics · Physics 2015-06-24 G. Yepes , R. Kates , A. Khokhlov , A. Klypin

There is growing observational evidence for dwarf galaxies hosting active galactic nuclei (AGN), including hints of AGN-driven outflows in dwarfs. However, in the common theoretical model of galaxy formation, efficient supernova (SN)…

Astrophysics of Galaxies · Physics 2022-09-02 Sophie Koudmani , Debora Sijacki , Matthew C. Smith

We present a semi-analytical model of high redshift galaxy formation. In our model the star formation inside a galaxy is regulated by the feedback from supernova (SNe) driven outflows. We derive a closed analytical form for star formation…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-18 Saumyadip Samui

We have recently improved our model of active galactic nucleus (AGN) by attaching the supermassive black hole (SMBH) to a massive nuclear star cluster (NSC). Here we study the effects of this new model in massive, gas-rich galaxies with…

Astrophysics of Galaxies · Physics 2018-01-25 Pawel Biernacki , Romain Teyssier

A model of supernovae feedback during disc galaxy formation is developed. The model incorporates infall of cooling gas from a halo and outflow of hot gas from a multiphase interstellar medium and a self-regulated model for star formation.…

Astrophysics · Physics 2009-07-09 G. Efstathiou

Feedback from star formation is thought to play a key role in the formation and evolution of galaxies, but its implementation in cosmological simulations is currently hampered by a lack of numerical resolution. We present and test a…

Astrophysics · Physics 2011-06-29 Claudio Dalla Vecchia , Joop Schaye

In this study, we present and validate a variation of recently-developed physically motivated sub-grid prescriptions for supernova feedback that account for the unresolved energy-conserving phase of the bubble expansion. Our model builds…

Astrophysics of Galaxies · Physics 2019-01-21 Alessandro Lupi

We introduce the LYRA project, a new high resolution galaxy formation model built within the framework of the cosmological hydro-dynamical moving mesh code AREPO. The model resolves the multi-phase interstellar medium down to 10 K. It forms…

Astrophysics of Galaxies · Physics 2021-02-26 Thales A. Gutcke , Rüdiger Pakmor , Thorsten Naab , Volker Springel

We present a subgrid model for supernova feedback designed for cosmological simulations of galaxy formation that may include a cold interstellar medium (ISM). The model uses thermal and kinetic channels of energy injection, which are built…

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 investigate how explosions of aspherical supernovae (A-SNe) can influence star formation histories and chemical evolution of dwarf galaxies by using a new chemodynamical model. We mainly present the numerical results of two comparative…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Kenji Bekki , Toshikazu Shigeyama , Takuji Tsujimoto

We introduce new high-resolution galaxy simulations accelerated by a surrogate model that reduces the computation cost by approximately 75 percent. Massive stars with a Zero Age Main Sequence mass of more than about 10 $\mathrm{M_\odot}$…

Effective stellar feedback is used in models of galaxy formation to drive realistic galaxy evolution. Models typically include energy injection from supernovae as the dominant form of stellar feedback, often in some form of sub-grid recipe.…

Astrophysics of Galaxies · Physics 2018-10-17 Andrew Emerick , Greg L. Bryan , Mordecai-Mark Mac Low