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pro vyhledávání: '"Borrow P"'
We derive the central stellar velocity dispersion function for quiescent galaxies in 280 massive clusters with $\log (M_{200} / M_{\odot}) > 14$ in IllustrisTNG300. The velocity dispersion function is an independent tracer of the dark matter mass dis
Externí odkaz:
http://arxiv.org/abs/2405.21076
The splashback radius is one popular method to constrain the size of galaxy clusters. It is typically measured through the logarithmic derivative of the galaxy number density profile, since doing so is more observationally viable and computationally
Externí odkaz:
http://arxiv.org/abs/2405.18468
Autor:
Correa, Camila, Schaller, Matthieu, Schaye, Joop, Ploeckinger, Sylvia, Borrow, Josh, Bahe, Yannick
Self-interacting dark matter (SIDM) has the potential to significantly influence galaxy formation in comparison to the cold, collisionless dark matter paradigm (CDM), resulting in observable effects. This study aims to elucidate this influence and to
Externí odkaz:
http://arxiv.org/abs/2403.09186
We examine the central stellar velocity dispersion of subhalos based on IllustrisTNG cosmological hydrodynamic simulations. The central velocity dispersion is a fundamental observable that links galaxies with their dark matter subhalos. We carefully
Externí odkaz:
http://arxiv.org/abs/2402.14218
Autor:
Shen, Xuejian, Vogelsberger, Mark, Borrow, Josh, Hu, Yongao, Erickson, Evan, Kannan, Rahul, Smith, Aaron, Garaldi, Enrico, Hernquist, Lars, Morishita, Takahiro, Tacchella, Sandro, Zier, Oliver, Sun, Guochao, Eilers, Anna-Christina, Wang, Hui
We investigate galaxy sizes at redshift $z\gtrsim 6$ with the cosmological radiation-magneto-hydrodynamic simulation suite THESAN(-HR). These simulations simultaneously capture the reionization of the large-scale intergalactic medium and resolved gal
Externí odkaz:
http://arxiv.org/abs/2402.08717
Autor:
Roche, Cian, McDonald, Michael, Borrow, Josh, Vogelsberger, Mark, Shen, Xuejian, Springel, Volker, Hernquist, Lars, Pakmor, Ruediger, Bose, Sownak, Kannan, Rahul
The distribution of offsets between the brightest cluster galaxies of galaxy clusters and the centroid of their dark matter distributions is a promising probe of the underlying dark matter physics. In particular, since this distribution is sensitive
Externí odkaz:
http://arxiv.org/abs/2402.00928
We illuminate the altered evolution of galaxies in clusters compared to the field by tracking galaxies in the IllustrisTNG300 simulation as they enter isolated clusters of mass $10^{13} < M_{\rm 200, mean} / {\rm M}_\odot < 10^{15}$ (at $z=0$). We de
Externí odkaz:
http://arxiv.org/abs/2310.07754
Autor:
Neyer, Meredith, Smith, Aaron, Kannan, Rahul, Vogelsberger, Mark, Garaldi, Enrico, Galárraga-Espinosa, Daniela, Borrow, Josh, Hernquist, Lars, Pakmor, Rüdiger, Springel, Volker
An important characteristic of cosmic hydrogen reionization is the growth of ionized gas bubbles surrounding early luminous objects. Ionized bubble sizes are beginning to be probed using Lyman-$\alpha$ emission from high-redshift galaxies, and will a
Externí odkaz:
http://arxiv.org/abs/2310.03783
Autor:
Garaldi, Enrico, Kannan, Rahul, Smith, Aaron, Borrow, Josh, Vogelsberger, Mark, Pakmor, Rüdiger, Springel, Volker, Hernquist, Lars, Galárraga-Espinosa, Daniela, Yeh, Jessica Y. -C., Shen, Xuejian, Xu, Clara, Neyer, Meredith, Spina, Benedetta, Almualla, Mouza, Zhao, Yu
Cosmological simulations serve as invaluable tools for understanding the Universe. However, the technical complexity and substantial computational resources required to generate such simulations often limit their accessibility within the broader rese
Externí odkaz:
http://arxiv.org/abs/2309.06475
Autor:
Luu, Hoang Nhan, Mocz, Philip, Vogelsberger, Mark, May, Simon, Borrow, Josh, Tye, S. -H. Henry, Broadhurst, Tom
Dark matter as scalar particles consisting of multiple species is well motivated in string theory where axion fields are ubiquitous. A two-field fuzzy dark matter (FDM) model features two species of ultralight axion particles with different masses, $
Externí odkaz:
http://arxiv.org/abs/2309.05694