Results 111 to 120 of about 69,394 (286)

Introducing the DREAMS Project: DaRk mattEr and Astrophysics with Machine Learning and Simulations

The Astrophysical Journal
We introduce the DaRk mattEr and Astrophysics with Machine learning and Simulations (DREAMS) project, an innovative approach to understanding the astrophysical implications of alternative dark matter (DM) models and their effects on galaxy formation and ...
Jonah C. Rose, Paul Torrey, Francisco Villaescusa-Navarro, Mariangela Lisanti, Tri Nguyen, Sandip Roy, Kassidy E. Kollmann, Mark Vogelsberger, Francis-Yan Cyr-Racine, Mikhail V. Medvedev, Shy Genel, Daniel Anglés-Alcázar, Nitya Kallivayalil, Bonny Y. Wang, Belén Costanza, Stephanie O’Neil, Cian Roche, Soumyodipta Karmakar, Alex M. Garcia, Ryan Low, Shurui Lin, Olivia Mostow, Akaxia Cruz, Andrea Caputo, Arya Farahi, Julian B. Muñoz, Lina Necib, Romain Teyssier, Julianne J. Dalcanton, David Spergel   +29 more
doaj   +1 more source

Modeling the Milky Way wind: Supernova-driven outflows accelerate HI clouds near the Galactic center

Astronomy & Astrophysics
Multiwavelength observations, from radio to X-rays, have revealed the presence of multiphase high-velocity gas near the center of the Milky Way likely associated with powerful galactic outflows. This region offers a unique laboratory to study the physics
Afruni Andrea, Di Teodoro Enrico M., Armillotta Lucia, Lynn Callum A., McClure-Griffiths Naomi M.   +4 more
doaj   +1 more source

Atomic responses to general dark matter-electron interactions

Physical Review Research, 2020
In the leading paradigm of modern cosmology, about 80% of our Universe's matter content is in the form of hypothetical, as yet undetected particles. These do not emit or absorb radiation at any observable wavelengths, and therefore constitute the so ...
Riccardo Catena, Timon Emken, Nicola A. Spaldin, Walter Tarantino   +3 more
doaj   +1 more source

Microfluidic Engineering of Chitosan‐Coated Nanoemulsions for Controlled Release and Stability in Space Pharmaceutics

Advanced Materials Technologies, EarlyView.
Microfluidic engineering enables the fabrication of chitosan‐coated, melatonin‐loaded nanoemulsions with controlled release and enhanced physicochemical stability for space pharmaceutics. Interfacial biopolymer coating modulates droplet behavior under accelerated thermal stress and simulated microgravity.
Modupe Adebowale, Nguyen Van Duc Long, Philip M Williams, Volker Hessel   +3 more
wiley   +1 more source

Close Encounters of Wide Binaries Induced by the Galactic Tide: Implications for Stellar Mergers and Gravitational-wave Sources

The Astrophysical Journal Letters
A substantial fraction of stars can be found in wide binaries with projected separations between ∼10 ^2 and 10 ^5 au. In the standard lore of binary physics, these would evolve as effectively single stars that remotely orbit one another on stationary ...
Jakob Stegmann, Alejandro Vigna-Gómez, Antti Rantala, Tom Wagg, Lorenz Zwick, Mathieu Renzo, Lieke A. C. van Son, Selma E. de Mink, Simon D. M. White   +8 more
doaj   +1 more source

ARTEMIS emulator: exploring the effect of cosmology and galaxy formation physics on Milky Way-mass haloes and their satellites

Monthly Notices of the Royal Astronomical Society
ABSTRACT We present the new ARTEMIS emulator suite of high-resolution (baryon mass of 2.23 × 104h−1 M⊙) zoom-in simulations of Milky Way-mass systems. Here, three haloes from the original ARTEMIS sample have been rerun multiple times, systematically varying parameters for the stellar feedback model, the density threshold for star ...
Shaun T Brown, Azadeh Fattahi, Ian G McCarthy, Andreea S Font, Kyle A Oman, Alexander H Riley   +5 more
openaire   +2 more sources

Cosmology with large redshift surveys

, 2012
Galaxy redshift surveys are a major tool to address the most challenging cosmological problems facing cosmology, like the nature of dark energy and properties dark matter.
Sodre Jr, Laerte
core   +1 more source

Optical Diversity and Nanostructural Organization in the Colored Scales of Sternotomis

Advanced Optical Materials, EarlyView.
Vivid colors in Sternotomis beetles originate from nanoscale photonic architectures embedded within individual scales. Here, we provide a comparative optical and structural analysis of 57 scale types that reveal how ordered, quasi‐ordered, and disordered 3D networks tune color, saturation, and angular response.
Viola Bauernfeind, Viola V. Vogler‐Neuling, Ilja Gunkel, Primož Pirih, Ullrich Steiner, Bodo D. Wilts   +5 more
wiley   +1 more source

The DREAMS Project: A New Suite of 1,024 Simulations to Contextualize the Milky Way and Assess Physics Uncertainties

We introduce a new suite of 1,024 cosmological and hydrodynamical zoom-in simulations of Milky Way-mass halos, run with Cold Dark Matter, as part of the DREAMS Project. Each simulation in the suite has a unique set of initial conditions and combination of cosmological and astrophysical parameters.
Rose, Jonah C., Lisanti, Mariangela, Torrey, Paul, Villaescusa-Navarro, Francisco, Garcia, Alex M., Farahi, Arya, Filion, Carrie, Brooks, Alyson M., Kallivayalil, Nitya, Kollmann, Kassidy E., Lilie, Ethan, Wang, Bonny Y., Cruz, Akaxia, Roy, Sandip, Pace, Andrew B., Ahvazi, Niusha, O'Neil, Stephanie, Roche, Cian, Shen, Xuejian, Vogelsberger, Mark   +19 more
openaire   +2 more sources

Ultra-fine dark matter structure in the Solar neighbourhood

, 2011
The direct detection of dark matter on Earth depends crucially on its density and its velocity distribution on a milliparsec scale. Conventional N-body simulations are unable to access this scale, making the development of other approaches necessary.
Ahlen, Ahmed, Akimov, Anne M. Green, Aprile, Benson, Boylan-Kolchin, Bryan, Bullock, Cole, Cole, Cowsik, Daniele S. M. Fantin, Diemand, Diemand, Dujmic, Einasto, Fantin, Freeman, Frenk, Ghigna, Goodman, Green, Helmi, Jungman, Kauffmann, Komatsu, Larson, Lewin, Michael R. Merrifield, Parkinson, Peebles, Purcell, Purcell, Rubin, Rubin, Rubin, Rubin, Rubin, Schneider, Smith, Smith, Sofue, Springel, Springel, Stadel, Stewart, Stiff, Szalay, Tegmark, Vogelsberger, Vogelsberger, Vogelsberger, Zentner, Zwicky   +54 more
core   +1 more source