Results 1 to 10 of about 2,655,258 (212)
Machine Learning the Dark Matter Halo Mass of Milky Way-Like Systems
The Open Journal of AstrophysicsDespite the Milky Way's proximity to us, our knowledge of its dark matter halo is fairly limited, and there is still considerable uncertainty in its halo mass.
Elaheh Hayati +2 more
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The Astrophysical Journal, 2023 The radial acceleration relation (RAR) represents a tight empirical relation between the inferred total and baryonic centripetal accelerations, g _tot = GM _tot (< r )/ r ^2 and g _bar = GM _bar (< r )/ r ^2 , observed in galaxies and galaxy clusters ...
Sut-Ieng Tam +3 more
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A New Stellar Mass Proxy for Subhalo Abundance Matching
The Astrophysical Journal, 2023 Subhalo abundance matching (SHAM) has played an important role in improving our understanding of how galaxies populate their host dark matter halos.
Chen-Yu Chuang, Yen-Ting Lin
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Feedback shaped the galaxy morphological sequence in presence of mergers
The Open Journal of AstrophysicsBulges and disks are major structural components that define galaxy morphology. The mass ratios of bulges and disks increase statistically with the galaxy mass, with the high-mass end occupied by elliptical galaxies. Although previous theoretical studies
Masafumi Noguchi
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Structure-wide Dark Matter Density Depletion Induced by Local Degeneracies
The Astrophysical JournalThe longstanding cusp–core problem—the discrepancy between the steep central density cusps predicted by cold dark matter (DM) simulations and certain shallow cores observed in dwarf galaxies, in particular the associated diversity of inner profiles ...
Yifei Yang, Weikang Lin
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How Many Bursts Does It Take to Form a Core at the Center of a Galaxy?
The Astrophysical JournalWe present a novel method for systematically assessing the impact of the central potential fluctuations associated with bursty outflows on the structures of dark matter halos for classical and ultrafaint dwarf (UFD) galaxies.
Olivia Mostow +6 more
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A Strong Falsification of the Universal Radial Acceleration Relation in Galaxies
The Astrophysical JournalIn the past few decades, many studies revealed that there exist some apparent universal relations that can describe the dynamical properties in galaxies.
Man Ho Chan
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Time delay of light in the gravitational lensing of supermassive black holes in dark matter halos
European Physical Journal C: Particles and FieldsThe dark matter halo has non-negligible effects on the gravitational lensing of supermassive black hole in the galaxy center. Our work presents a study on the time-delay of light in gravitational lensing of black holes enclosed by dark matter halos.
Chen-Kai Qiao, Ping Su
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From Halos to Galaxies. IX. Estimate of Halo Assembly History for SDSS Galaxy Groups
The Astrophysical JournalThe properties of the galaxies are tightly connected to their host halo mass and halo assembly history. Accurate measurement of the halo assembly history in observation is challenging but crucial to the understanding of galaxy formation and evolution ...
Cheqiu Lyu +17 more
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The Impact of Galaxy-halo Size Relations on Galaxy Clustering Signals
The Open Journal of AstrophysicsGalaxies come in different sizes and morphologies, and these differences are thought to correlate with properties of their underlying dark matter halos.
Joshua B. Hill, Yao-Yuan Mao
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