Results 141 to 150 of about 577,018 (252)

GD-1 and the Milky Way Starless Subhalos [PDF]

arXiv
Measurements of the GD-1 star stream velocity distribution within $\pm$3 degrees of the centerline find a total line of sight velocity spread of 5-6 km/s in the well measured $\phi_1=$ [-30, 0] region (Valluri25). The velocity spread is far above the $\sim$2-3 km/s of a dissolved globular cluster in a smooth galactic potential. The dynamical heating of
arxiv  

Exploration of Half‐Cycle Length of Converging Circular Wavy Duct with Diverging‐Outlet: Turbulent Water Dynamics

Advanced Theory and Simulations, EarlyView.
Increasing half‐cycles intensifies turbulence due to enhanced vortex interactions and flow separation at the diverged‐outlets. Longer wavy ducts are shown to increase flow acceleration, resulting in greater output velocities and more turbulent‐kinetic‐energy production. Wave‐period plays a crucial role in determining turbulent intensity, with amplitude
I. L. Animasaun, Taseer Muhammad, Se‐Jin Yook   +2 more
wiley   +1 more source

The Age–Velocity Dispersion Relations of the Galactic Disk as Revealed by the LAMOST-Gaia Red Clump Stars

The Astrophysical Journal
Using nearly 230,000 red clump stars selected from LAMOST and Gaia, we conduct a comprehensive analysis of the stellar age–velocity dispersion relations (AVRs) for various disk populations, within 5.0 ≤ R ≤ 15.0 kpc and ∣ Z ∣ ≤ 3.0 kpc.
Weixiang Sun, Han Shen, Biwei Jiang, Xiaowei Liu   +3 more
doaj   +1 more source

Making action-angle disc models for Gaia [PDF]

arXiv, 2015
A brief review of recent work. I describe dynamical modelling of the Milky Way using action-angle coordinates. I explain what action-angle coordinates are, and what progress has been made in the past few years to ensuring they can be used in reasonably realistic Galactic potentials.
arxiv  

Dynamical modelling of the Milky Way Bar/Bulge

, 2018
I review the recent progresses on the properties of the Galactic bar and bulge, and the major theoretical models and techniques to understand the Milky Way bulge. Despite these recent advances, a complete bulge formation model that explains the full kinematics and metallicity distribution is still not fully understood.
openaire   +3 more sources

Sustained Vaccine Exposure Elicits More Rapid, Consistent, and Broad Humoral Immune Responses to Multivalent Influenza Vaccines

Advanced Science, EarlyView.
This work presents an injectable polymer‐nanoparticle hydrogel depot platform for delivering multivalent influenza vaccines which induces stronger and more durable immune responses. The technology provides broader protection, including against heterologous and potential pandemic strains (H5N1, H7N9, H9N2), and enhances the effectiveness of commercial ...
Olivia M. Saouaf, Ben S. Ou, Ye Eun Song, Joshua J. Carter, Jerry Yan, Carolyn K. Jons, Christopher O. Barnes, Eric A. Appel   +7 more
wiley   +1 more source

A New Rarity Assessment of the “Disk of Satellites”: The Milky Way System Is the Exception Rather Than the Rule in the ΛCDM Cosmology

The Astrophysical Journal
The majority of satellite galaxies around the Milky Way (MW) show disk-like distributions (the disk of satellites; DoS), which is a small-scale problem of the lambda cold dark matter cosmology.
Chanoul Seo, Suk-Jin Yoon, Sanjaya Paudel, Sung-Ho An, Jun-Sung Moon   +4 more
doaj   +1 more source

FUS Selectively Facilitates circRNAs Packing into Small Extracellular Vesicles within Hypoxia Neuron

Advanced Science, EarlyView.
This study aimed to unravel the role of FUS in the loading of functional circRNAs into neuronal sEVs under hypoxic conditions, which involves their aggregations in SGs and specific interaction between the FUS Zf_RanBP domain to regulate circRNA sorting in sEVs.
Jiankun Zang, Yousheng Wu, Xuanlin Su, Kaiwei Cai, Man Ke, Niu He, Huili Zhu, Zefeng Tan, Jielin Zhu, Wensheng He, Min Peng, Shiqing Zhang, Hongcheng Mai, Anding Xu, Dan Lu   +14 more
wiley   +1 more source

Efficient and Accurate Force Replay in Cosmological-baryonic Simulations

The Astrophysical Journal
We construct time-evolving gravitational potential models for a Milky Way–mass galaxy from the FIRE-2 suite of cosmological-baryonic simulations using basis function expansions.
Arpit Arora, Robyn Sanderson, Christopher Regan, Nicolás Garavito-Camargo, Emily Bregou, Nondh Panithanpaisal, Andrew Wetzel, Emily C. Cunningham, Sarah R. Loebman, Adriana Dropulic, Nora Shipp   +10 more
doaj   +1 more source

On the dynamics of tidal streams in the Milky Way galaxy

, 2010
We present a brief history of Galactic astrophysics, and explain the origin of halo substructure in the Galaxy. We motivate our study of tidal streams by highlighting the tight constraints that analysis of the trajectories of tidal streams can place on the form of the Galactic potential.
openaire   +2 more sources