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We study the central dark matter (DM) cusp evolution in cosmological galactic halos. Models with and without baryons (baryons+DM, hereafter BDM model, and pure DM, PDM model, respectively) are advanced from identical initial conditions. The…

Astrophysics · Physics 2009-11-13 Emilio Romano-Diaz , Isaac Shlosman , Yehuda Hoffman , Clayton Heller

We review some general properties of assembling galactic dark matter (DM) halos which have a direct effect on the baryon dynamics. Specifically, we focus on the mutual dynamical feedback between baryons and DM which influence disk formation…

Cosmology and Nongalactic Astrophysics · Physics 2009-02-18 Isaac Shlosman

We compare the substructure evolution in pure dark matter (DM) halos with those in the presence of baryons (PDM and BDM). The prime halos have been analyzed by Romano-Diaz et al (2009). Models have been evolved from identical initial…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Emilio Romano-Diaz , Isaac Shlosman , Clayton Heller , Yehuda Hoffman

We have studied the dark matter (DM) distribution in a approx 10^12 h^-1 M_sun mass halo extracted from a simulation consistent with the concordance cosmology, where the physics regulating the transformation of gas into stars was allowed to…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Susana E. Pedrosa , Patricia B. Tissera , Cecilia Scannapieco

We present a new set of cosmological zoom-in simulations of a MW-like galaxy which for the first time include elastic velocity-dependent self interacting dark matter (SIDM) and IllustrisTNG physics. With these simulations we investigate the…

Astrophysics of Galaxies · Physics 2022-12-21 Jonah C. Rose , Paul Torrey , Mark Vogelsberger , Stephanie O'Neil

We investigate the formation and evolution of galactic disks immersed in assembling live DM halos. Disk/halo components have been evolved from the cosmological initial conditions and represent the collapse of an isolated density…

Astrophysics · Physics 2009-11-13 Clayton Heller , Isaac Shlosman , Lia Athanassoula

In this work we aim at investigating the effects of baryons on the dark matter (DM) haloes structure, focusing on the correlation between the presence and importance of stellar discs and the halo shapes. We study the properties of a…

Astrophysics of Galaxies · Physics 2021-02-22 P. Cataldi , S. Pedrosa , P. Tissera , C. Artale

To assess the effect of baryonic ``pinching'' of galaxy cluster dark matter (DM) haloes, cosmological (LCDM) TreeSPH simulations of the formation and evolution of two galaxy clusters have been performed, with and without baryons included.…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Jesper Sommer-Larsen , Marceau Limousin

Observational evidence indicates a mismatch between the shapes of collisionless dark matter (DM) halos and those of observed systems. Using hydrodynamical cosmological simulations we investigate the effect of baryonic dissipation on halo…

Astrophysics · Physics 2009-11-11 Stelios Kazantzidis , Andrew R. Zentner , Daisuke Nagai

We investigate how stellar disks sustain their ultrathin structure throughout their evolution. We follow the evolution of ultrathin stellar disks with varying dark matter (DM) halo concentration ($c$) using collisionless $N$-body…

Astrophysics of Galaxies · Physics 2025-09-17 K. Aditya , Arunima Banerjee

We study the dynamics of galactic disk formation and evolution in 'realistic' LambdaCDM haloes with idealized baryonic initial conditions. We add rotating spheres of hot gas at z=1.3 to two fully cosmological dark-matter-only halo…

Astrophysics of Galaxies · Physics 2015-06-04 Michael Aumer , Simon D. M. White

We study the detailed structure of galaxies at redshifts z > 2 using cosmological simulations with improved modeling of the interstellar medium and star formation. The simulations follow the formation and dissociation of molecular hydrogen,…

Astrophysics of Galaxies · Physics 2012-09-21 Marcel Zemp , Oleg Y. Gnedin , Nickolay Y. Gnedin , Andrey V. Kravtsov

The evolution of the baryon distribution in different phases, derived from cosmological simulations, are here reported. These computations indicate that presently most of baryons are in a warm-hot intergalactic (WHIM) medium (about 43%)…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 Fabrice Durier , Jose Antonio de Freitas Pacheco

In the framework of the $\Lambda$CDM model, galaxies evolve within dark matter (DM) haloes, where baryonic processes modify the inner structure of the DM distribution. In particular, baryon condensation and feedback can alter the inner…

Astrophysics of Galaxies · Physics 2026-04-06 Vicente Honorato , Antonio D. Montero-Dorta , M. Celeste Artale , Ankit Kumar

We analyse the dark matter (DM) distribution in a approx 10^12 M_sun halo extracted from a simulation consistent with the concordance cosmology, where the physics regulating the transformation of gas into stars was allowed to change…

Cosmology and Nongalactic Astrophysics · Physics 2009-11-13 Susana E. Pedrosa , Patricia B. Tissera , Cecilia Scannapieco

We select a sample of Milky Way (MW) mass haloes from a high-resolution version of the EAGLE simulation to study their inner dark matter (DM) content and how baryons alter it. As in previous studies, we find that all haloes are more massive…

Astrophysics of Galaxies · Physics 2022-02-16 Victor J. Forouhar Moreno , Alejandro Benítez-Llambay , Shaun Cole , Carlos Frenk

In this paper we examine the effect of the formation and evolution of the disk galaxy on the distribution of dark halo matter. We have made simulations of isolated dark matter (DM) halo and two component (DM + baryons). N-body technique was…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 S. A. Khoperskov , B. M. Shustov , A. V. Khoperskov

In this paper we examine aspects of primordial star formation in a gravitino warm dark matter universe with a cosmological constant. We compare a set of simulations using a single cosmological realization but with a wide range of warm dark…

Astrophysics · Physics 2008-11-26 Brian W. O'Shea , Michael L. Norman

Using N-body/hydrodynamical simulations which include prescriptions for Star Formation, Feed-Back and Chemical Evolution, we explore the interaction between baryons and Dark Matter at galactic scale. The N-body simulations are performed…

Astrophysics · Physics 2007-05-23 Cesario Lia , Giovanni Carraro , Paolo Salucci

Coupling the dark matter (DM) and baryonic components in galaxies via dynamical friction (by allowing the latter to be clumpy) leads to energy input into the DM. The resulting expanding tendency in the DM component overcomes the competing…

Astrophysics · Physics 2007-05-23 Amr El-Zant , Isaac Shlosman , Yehuda Hoffman
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