Results 81 to 90 of about 2,970 (256)

Tilted Dark Halos Are Common and Long-lived, and Can Warp Galactic Disks

The Astrophysical Journal Letters, 2023
In the Lambda cold dark matter paradigm, the dark halo governs the gravitational potential within which a galaxy can form and evolve. In this Letter we show that the present-day inner ( r < 50 kpc) dark halo can be significantly misaligned with the ...
Jiwon Jesse Han, Vadim Semenov, Charlie Conroy, Lars Hernquist   +3 more
doaj   +1 more source

The distribution of satellite galaxies: the great pancake [PDF]

Monthly Notices of the Royal Astronomical Society, 2005
The 11 known satellite galaxies within 250 kpc of the Milky Way lie close to a great circle on the sky. We use high resolution N-body simulations of galactic dark matter halos to test if this remarkable property can be understood within the context of the cold dark matter cosmology.
Libeskind, Noam I., Frenk, Carlos S., Cole, Shaun, Helly, John C., Jenkins, Adrian, Navarro, Julio F., Power, Chris   +6 more
openaire   +5 more sources

Constraining the Low-mass End of the Stellar-to-halo Mass Relation with Surveys of Satellite Galaxies

The Astrophysical Journal
The abundance of satellite galaxies is set by the hierarchical assembly of their host halo. We leverage this to investigate the low-mass end ( M _H < 10 ^11 M _⊙ ) of the stellar-to-halo mass relation (SHMR), which is key to constraining theories of ...
J. Sebastian Monzon, Frank C. van den Bosch, Kaustav Mitra   +2 more
doaj   +1 more source

Galaxy Quenching with Mass Growth History of Galaxy Groups and Clusters: The Importance of Post-processing

The Astrophysical Journal, 2023
We investigate the fraction of quenched satellite galaxies in host galaxy groups and clusters using TNG300 in the IllustrisTNG cosmological magnetohydrodynamical simulations.
So-Myoung Park, Kyungwon Chun, Jihye Shin, Hyunjin Jeong, Joon Hyeop Lee, Mina Pak, Rory Smith, Jae-Woo Kim   +7 more
doaj   +1 more source

Planes of Satellite Galaxies

, 2019
Both the Milky Way and the Andromeda galaxy are known to host highly flattened planes of satellite galaxies. These display coherent kinematics, which is consistent with many of their satellite galaxies co-orbiting along the structures. In addition, we recently discovered that a similar satellite structure around Centaurus A also shows coherent ...
openaire   +2 more sources

Planes of satellite galaxies and the cosmic web [PDF]

Monthly Notices of the Royal Astronomical Society, 2015
Recent observational studies have demonstrated that the majority of satellite galaxies tend to orbit their hosts on highly flattened, vast, possibly co-rotating planes. Two nearly parallel planes of satellites have been confirmed around the M31 galaxy and around the Centaurus A galaxy, while the Milky Way also sports a plane of satellites.
Libeskind, Noam I., Hoffman, Yehuda, Tully, R. Brent, Courtois, Helene M., Pomarède, Daniel, Gottlöber, Stefan, Steinmetz, Matthias   +6 more
openaire   +5 more sources

Effects of Galactic Irradiation on Thermal and Electronic Transport in Tungsten

physica status solidi (b), EarlyView.
This atomic‐scale study reveals how low‐to‐mid‐energy space irradiation alters tungsten's thermal and electronic behavior, even at low defect levels. Focusing on vacancy sites in bulk and near grain boundaries, it employs two novel approaches: site‐projected thermal conductivity and the N2$^{2}$ method for the thermal and electronic response analysis ...
Chinonso Ugwumadu, David A. Drabold, Roxanne M. Tutchton   +2 more
wiley   +1 more source

Impact of the Cosmic Web on the Properties of Galaxies in IllustrisTNG Simulations

The Astrophysical Journal
We investigate the influence of the cosmic web on galaxy properties in the IllustrisTNG simulations. To disentangle the effects of galaxy groups and cosmic filaments, we divide the cosmic web environment into four categories: group, group-dominated ...
Guangyao Yu, Weishan Zhu, Qi-Rui Yang, Jian-Feng Mo, Tian-Cheng Luan, Long-Long Feng   +5 more
doaj   +1 more source

Prioritized Real‐Time UAV‐Based Vessel Detection for Efficient Maritime Search

Journal of Field Robotics, EarlyView.
ABSTRACT Real‐time vessel detection in maritime environments is crucial for diverse applications requiring speed and accuracy. Static camera views often introduce blind spots, compromising detection efficiency. This paper proposes a novel, real‐time UAV‐based system that uses a dynamic camera control strategy to address this limitation.
Lyes Saad Saoud, Zikai Jia, Siyuan Yang, Muhayy Ud Din, Lakmal Seneviratne, Shaoming He, Irfan Hussain   +6 more
wiley   +1 more source

Innovation for Sustainable Development: Assessing Sustainability‐Oriented Innovations in the UK Palm Oil Supply Chains

Sustainable Development, EarlyView.
ABSTRACT This research evaluates the adoption of Sustainability‐Oriented Innovations (SOIs) by UK food manufacturers, particularly in the palm oil sector. Despite the global palm oil industry's environmental and social impacts, such as deforestation and labour exploitation, empirical studies on SOIs are limited. This paper addressed this gap by mapping
Charlie Terry, Rory Padfield, Alexandra Dales   +2 more
wiley   +1 more source