Baryonic solutions and challenges for cosmological models of dwarf galaxies
Galaxies and their dark-matter haloes have posed several challenges to the dark energy
plus cold dark matter (Λ CDM) cosmological model. These discrepancies between …
plus cold dark matter (Λ CDM) cosmological model. These discrepancies between …
Small-Scale Challenges to the Λ CDM Paradigm
JS Bullock, M Boylan-Kolchin - Annual Review of Astronomy …, 2017 - annualreviews.org
The dark energy plus cold dark matter (ΛCDM) cosmological model has been a
demonstrably successful framework for predicting and explaining the large-scale structure of …
demonstrably successful framework for predicting and explaining the large-scale structure of …
[HTML][HTML] From galactic bars to the hubble tension: Weighing up the astrophysical evidence for milgromian gravity
Astronomical observations reveal a major deficiency in our understanding of physics—the
detectable mass is insufficient to explain the observed motions in a huge variety of systems …
detectable mass is insufficient to explain the observed motions in a huge variety of systems …
Dark matter halos as particle colliders: unified solution to small-scale structure puzzles from dwarfs to clusters
Astrophysical observations spanning dwarf galaxies to galaxy clusters indicate that dark
matter (DM) halos are less dense in their central regions compared to expectations from …
matter (DM) halos are less dense in their central regions compared to expectations from …
One law to rule them all: the radial acceleration relation of galaxies
F Lelli, SS McGaugh, JM Schombert… - The Astrophysical …, 2017 - iopscience.iop.org
We study the link between baryons and dark matter (DM) in 240 galaxies with spatially
resolved kinematic data. Our sample spans 9 dex in stellar mass and includes all …
resolved kinematic data. Our sample spans 9 dex in stellar mass and includes all …
Gaia early DR3 systemic motions of Local Group dwarf galaxies and orbital properties with a massive Large Magellanic Cloud
G Battaglia, S Taibi, GF Thomas, TK Fritz - Astronomy & Astrophysics, 2022 - aanda.org
Aims. We perform a comprehensive determination of the systemic proper motions of 74
dwarf galaxies and dwarf galaxy candidates in the Local Group based on Gaia early data …
dwarf galaxies and dwarf galaxy candidates in the Local Group based on Gaia early data …
Dark matter heats up in dwarf galaxies
Gravitational potential fluctuations driven by bursty star formation can kinematically 'heat
up'dark matter at the centres of dwarf galaxies. A key prediction of such models is that, at a …
up'dark matter at the centres of dwarf galaxies. A key prediction of such models is that, at a …
The impact of baryonic physics on the structure of dark matter haloes: the view from the FIRE cosmological simulations
We study the distribution of cold dark matter (CDM) in cosmological simulations from the
FIRE (Feedback In Realistic Environments) project, for M*∼ 104–11 M⊙ galaxies in M h∼ …
FIRE (Feedback In Realistic Environments) project, for M*∼ 104–11 M⊙ galaxies in M h∼ …
Forged in fire: cusps, cores and baryons in low-mass dwarf galaxies
We present multiple ultrahigh resolution cosmological hydrodynamic simulations of M⋆≃
104–6.3 Mȯ dwarf galaxies that form within two M vir= 109.5–10 Mȯ dark matter halo initial …
104–6.3 Mȯ dwarf galaxies that form within two M vir= 109.5–10 Mȯ dark matter halo initial …
Dark matter cores all the way down
We use high-resolution simulations of isolated dwarf galaxies to study the physics of dark
matter cusp-core transformations at the edge of galaxy formation: M 200= 107–109 M⊙. We …
matter cusp-core transformations at the edge of galaxy formation: M 200= 107–109 M⊙. We …