Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Burger, Jan D."'
Autor:
Hassan, Sultan, Ostriker, Eve C., Kim, Chang-Goo, Bryan, Greg L., Burger, Jan D., Fielding, Drummond B., Forbes, John C., Genel, Shy, Hernquist, Lars, Jeffreson, Sarah M. R., Motwani, Bhawna, Smith, Matthew C., Somerville, Rachel S., Steinwandel, Ulrich P., Teyssier, Romain
Traditional star formation subgrid models implemented in cosmological galaxy formation simulations, such as that of Springel & Hernquist (2003, hereafter SH03), employ adjustable parameters to satisfy constraints measured in the local Universe. In re
Externí odkaz:
http://arxiv.org/abs/2409.09121
Autor:
Burger, Jan D., Zavala, Jesús, Sales, Laura V., Vogelsberger, Mark, Marinacci, Federico, Torrey, Paul
Publikováno v:
Phys. Rev. Lett. 129, 191103, Published 1 November 2022
Impulsive supernova feedback and non-standard dark matter models, such as self-interacting dark matter (SIDM), are the two main contenders for the role of the dominant core formation mechanism at the dwarf galaxy scale. Here we show that the impulsiv
Externí odkaz:
http://arxiv.org/abs/2211.03795
Autor:
Jahn, Ethan D., Sales, Laura V., Marinacci, Federico, Vogelsberger, Mark, Torrey, Paul, Qi, Jia, Smith, Aaron, Li, Hui, Kannan, Rahul, Burger, Jan D., Zavala, Jesús
The tension between the diverging density profiles in Lambda Cold Dark Matter ($\Lambda$CDM) simulations and the constant-density inner regions of observed galaxies is a long-standing challenge known as the `core-cusp' problem. We demonstrate that th
Externí odkaz:
http://arxiv.org/abs/2110.00142
Autor:
Burger, Jan D., Zavala, Jesús, Sales, Laura V., Vogelsberger, Mark, Marinacci, Federico, Torrey, Paul
We present a suite of 16 high-resolution hydrodynamic simulations of an isolated dwarf galaxy (gaseous and stellar disk plus a stellar bulge) within an initially cuspy dark matter (DM) halo, including self-interactions between the DM particles (SIDM)
Externí odkaz:
http://arxiv.org/abs/2108.07358
Autor:
Burger, Jan D., Zavala, Jesús
We present and test an effective model for N -body simulations that aims at mimicking the impact of supernova (SN) feedback on the dark matter (DM) distribution of isolated halos hosting dwarf galaxies. Although the model is physically decoupled from
Externí odkaz:
http://arxiv.org/abs/2103.01231
In slowly evolving spherical potentials, $\Phi(r,t)$, radial actions are typically assumed to remain constant. Here, we construct dynamical invariants that allow us to derive the evolution of radial actions in spherical central potentials with an arb
Externí odkaz:
http://arxiv.org/abs/2012.00737
Publikováno v:
Phys. Rev. D 100, 063007 (2019)
Milky Way (MW) satellites reside within dark matter (DM) subhalos with a broad distribution of circular velocity profiles. This diversity is enhanced with the inclusion of ultra-faint satellites, which seemingly have very high DM densities, albeit wi
Externí odkaz:
http://arxiv.org/abs/1904.09998
Autor:
Burger, Jan D., Zavala, Jesús
It is well established that the central deficit of dark matter (DM) observed in many dwarf galaxies disagrees with the cuspy DM haloes predicted in the collision-less and cold DM (CDM) model. Plausible solutions to this problem are based on an effect
Externí odkaz:
http://arxiv.org/abs/1810.10024
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