Zobrazeno 1 - 10
of 7 911
pro vyhledávání: '"Frenk, A"'
Autor:
Lange, Samuel C., Amvrosiadis, Aristeidis, Nightingale, James W., He, Qiuhan, Frenk, Carlos S., Robertson, Andrew, Cole, Shaun, Massey, Richard, Cao, Xiaoyue, Li, Ran, Wang, Kaihao
We analyze two galaxy-scale strong gravitational lenses, SPT0418-47 and SPT2147-50, using JWST NIRCam imaging across multiple filters. To account for angular complexity in the lens mass distribution, we introduce multipole perturbations with orders $
Externí odkaz:
http://arxiv.org/abs/2410.12987
Autor:
Newton, Oliver, Lovell, Mark R., Frenk, Carlos S., Jenkins, Adrian, Helly, John C., Cole, Shaun, Benson, Andrew J.
Low-mass galaxies provide a powerful tool with which to investigate departures from the standard cosmological paradigm in models that suppress the abundance of small dark matter structures. One of the simplest metrics that can be used to compare diff
Externí odkaz:
http://arxiv.org/abs/2408.16042
Autor:
Yang, Hang, Liao, Shihong, Fattahi, Azadeh, Frenk, Carlos S., Gao, Liang, Guo, Qi, Shao, Shi, Wang, Lan, Wright, Ruby J., Zeng, Guangquan
Utilizing the Apostle--Auriga simulations, which start from the same zoom-in initial conditions of Local Group-like systems but run with different galaxy formation subgrid models and hydrodynamic solvers, we study the impact of stellar feedback model
Externí odkaz:
http://arxiv.org/abs/2408.09784
Autor:
Sawala, Till, Delhomelle, Jehanne, Deason, Alis J., Frenk, Carlos S., Johansson, Peter H., Keitaanranta, Atte, Rawlings, Alexander, Wright, Ruby
It is commonly believed that our own Milky Way is on a collision course with the neighbouring Andromeda galaxy. As a result of their merger, predicted in around five billion years, the two large spiral galaxies that define the present Local Group wou
Externí odkaz:
http://arxiv.org/abs/2408.00064
Autor:
Hernández-Aguayo, César, Springel, Volker, Bose, Sownak, Frenk, Carlos, Jenkins, Adrian, Barrera, Monica, Ferlito, Fulvio, Pakmor, Rüdiger, White, Simon D. M., Hernquist, Lars, Delgado, Ana Maria, Kannan, Rahul, Hadzhiyska, Boryana
We discuss the cold dark matter plus massive neutrinos simulations of the MillenniumTNG (MTNG) project, which aim to improve understanding of how well ongoing and future large-scale galaxy surveys will measure neutrino masses. Our largest simulations
Externí odkaz:
http://arxiv.org/abs/2407.21103
Autor:
Amvrosiadis, Aristeidis, Nightingale, James W., He, Qiuhan, Robertson, Andrew, Lange, Samuel C., Frenk, Carlos S., Cole, Shaun, Massey, Richard, Poci, Adriano
The surface brightness distribution of massive early-type galaxies (ETGs) often deviates from a perfectly elliptical shape. To capture these deviations in their isophotes during an ellipse fitting analysis, Fourier modes of order $m = 3, 4$ are often
Externí odkaz:
http://arxiv.org/abs/2407.12983
The latest cosmological constraints on the sum of the neutrino masses depend on prior physical assumptions about the mass spectrum. To test the accordance of cosmological and laboratory constraints in the absence of such priors, we introduce an effec
Externí odkaz:
http://arxiv.org/abs/2407.10965
Autor:
Kizhuprakkat, Namitha, Cooper, Andrew P., Riley, Alexander H., Koposov, Sergey E., Aguilar, Jessica Nicole, Ahlen, Steven, Prieto, Carlos Allende, Brooks, David, Claybaugh, Todd, Dawson, Kyle, de la Macorra, Axel, Doel, Peter, Forero-Romero, Jaime E., Frenk, Carlos, Gaztañaga, Enrique, Gnedin, Oleg Y., Grand, Robert J. J., Gontcho, Satya Gontcho A, Honscheid, Klaus, Kehoe, Robert, Landriau, Martin, Manera, Marc, Meisner, Aaron, Miquel, Ramon, Nie, Jundan, Prada, Francisco, Rezaie, Mehdi, Rossi, Graziano, Sanchez, Eusebio, Schubnell, Michael, Seo, Hee-Jong, Tarlé, Gregory, Valluri, Monica, Zhou, Zhimin
The Dark Energy Spectroscopic Instrument Milky Way Survey (DESI MWS) will explore the assembly history of the Milky Way by characterising remnants of ancient dwarf galaxy accretion events and improving constraints on the distribution of dark matter i
Externí odkaz:
http://arxiv.org/abs/2406.08921
Autor:
Lu, Shengdong, Frenk, Carlos S., Bose, Sownak, Lacey, Cedric G., Cole, Shaun, Baugh, Carlton M., Helly, John C.
Observations with the James Webb Space Telescope have revealed a high abundance of bright galaxies at redshift, $z\gtrsim 12$, which has been widely interpreted as conflicting with the $\Lambda$CDM model. In Cowley et al. (2018) predictions were made
Externí odkaz:
http://arxiv.org/abs/2406.02672
The dark matter subhalos orbiting in a galactic halo perturb the orbits of stars in thin stellar streams. Over time the random velocities in the streams develop non-Gaussian wings. The rate of velocity increase is approximately a random walk at a rat
Externí odkaz:
http://arxiv.org/abs/2405.18522