Results 1 to 10 of about 8,080,766 (192)
The GD-1 Stellar Stream Perturber as a Core-collapsed Self-interacting Dark Matter Halo [PDF]
The Astrophysical Journal LettersThe GD-1 stellar stream exhibits spur and gap structures that may result from a close encounter with a dense substructure. When interpreted as a dark matter subhalo, the perturber is denser than predicted in the standard cold dark matter (CDM) model.
Xingyu Zhang +3 more
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Using frequency maps to explore the distribution function of the Milky Way stellar halo
EPJ Web of Conferences, 2012 Resolved surveys of the Milky Way's stellar halo can obtain all 6 phase space coordinates of tens of thousands of individual stars, making it possible to compute their 3-dimensional orbits.
Valluri M.
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Gravothermal Solutions of SIDM Halos: Mapping from Constant to Velocity-dependent Cross Section
The Astrophysical Journal, 2023 The scale-free gravothermal fluid formalism has long proved effective in describing the evolution of self-interacting dark matter halos with a constant dark matter particle cross section.
Shengqi Yang +6 more
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The Stellar Halo of the Galaxy is Tilted and Doubly Broken
The Astronomical Journal, 2022 Modern Galactic surveys have revealed an ancient merger that dominates the stellar halo of our galaxy (Gaia–Sausage–Enceladus, GSE). Using chemical abundances and kinematics from the H3 Survey, we identify 5559 halo stars from this merger in the radial ...
Jiwon Jesse Han +9 more
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Building an Acceleration Ladder with Tidal Streams and Pulsar Timing
The Astrophysical Journal Letters, 2023 We analyse stellar streams in action-angle coordinates combined with recent local direct acceleration measurements to provide joint constraints on the potential of our galaxy.
Peter Craig +3 more
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The Astrophysical Journal, 2023 The Large Magellanic Cloud (LMC) will induce a dynamical friction (DF) wake on infall to the Milky Way (MW). The MW’s stellar halo will respond to the gravity of the LMC and the dark matter (DM) wake, forming a stellar counterpart to the DM wake.
Hayden R. Foote +9 more
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Overview of the DESI Milky Way Survey
The Astrophysical Journal, 2023 We describe the Milky Way Survey (MWS) that will be undertaken with the Dark Energy Spectroscopic Instrument (DESI) on the Mayall 4 m telescope at the Kitt Peak National Observatory.
Andrew P. Cooper +64 more
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Wormhole in the Milky Way galaxy with global monopole charge
European Physical Journal C: Particles and Fields, 2022 Wormholes are tunnels or short-cuts in space-time, and their existence is very important for human civilization to express the vastness of space and time. So, it is necessary to analyze our own Milky Way galaxy if it can harbour any wormhole.
Priyam Das, Mehedi Kalam
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Figure Rotation of IllustrisTNG Halos
The Astrophysical Journal, 2023 We use the TNG50 and TNG50 dark matter (DM)-only simulations from the IllustrisTNG simulation suite to conduct an updated survey of halo figure rotation in the presence of baryons.
Neil Ash, Monica Valluri
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Imprints of flavor anomalies on neutrino oscillations through dark matter halo
Nuclear Physics B, 2023 In this work we study the impact of new physics, stimulated by flavor anomalies, on neutrino oscillations through dense dark matter halo. Inspired by a model where a Majorana dark matter fermion and two new scalar fields contribute to b→sμ+μ− transition ...
Ashutosh Kumar Alok +2 more
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