Results 71 to 80 of about 235,164 (217)
EBHIS Local Volume Galaxy Hi Survey (LVGHIS)
Astronomische Nachrichten, EarlyView.ABSTRACT Here, we present the “Local Volume Galaxy Hi Survey” (LVGHIS). It is based on the first data release of the Milky Way portion of the Effelsberg Bonn Hi‐Survey (EBHIS). We homogeneously measured the mass and dynamics of the local volume galaxies within the radial velocity limit of |vLSR|≤600kms−1$$ \mid {v}_{\mathrm{LSR}}\mid \le 600\kern0.6em \
V. A. Schulz +3 more
wiley +1 more source
Properties of Galaxies with Counter-rotating Stellar Disks in the MaNGA Survey
The Astrophysical JournalThe gas accretion process can fuel both star formation and black hole activity, playing a critical role in galaxy evolution. The counter-rotating structures are believed to originate from gas accretion, serving as an ideal laboratory to study its impact ...
Min Bao +4 more
doaj +1 more source
The Age of Questions: Truth Regimes and Subjectivity in the Era of Large Language Models
Behavioral Sciences &the Law, EarlyView.ABSTRACT This essay explores how digital technologies shape subjectivity's infra‐political constitution, focusing on large language models (LLMs) like ChatGPT or Gemini within what philosophers, inspired by Michel Foucault, term the “digital truth regime.” After defining this regime, the essay identifies five key traits of LLMs: presentism in truth ...
Charles Corval
wiley +1 more source
THE ACCRETION GEOMETRY IN RADIO-LOUD ACTIVE GALAXIES [PDF]
Modern Physics Letters A, 2007 We review the latest attempts to determine the accretion geometry in radio-loud active galactic nuclei (AGN). These objects, which comprise ~ 10–20% of the AGN population, produce powerful collimated radio jets that can extend thousands of parsecs from the center of the host galaxy. Recent multiwavelength surveys have shown that radio-loudness is more
openaire +2 more sources
Accretion of satellite galaxies and the density of the Universe [PDF]
Monthly Notices of the Royal Astronomical Society, 1994 Recent work suggests that the disc mass of a galaxy like our own cannot have grown by more than 10 per cent through the accretion of satellites over the last 5 Gyr, greater accretion would have led to excessive thickening of the stellar disc. This limit has been interpreted as requiring a low-density universe, since current merger rates are then ...
Julio F. Navarro +2 more
openaire +1 more source
Gas accretion onto galaxies: models vs observations
, 2009 Gas accretion is a vital support for galaxy evolution and the feeding of star formation. In recent years, the study of gaseous haloes surrounding disk galaxies has shown the presence of gas complexes, analogous to the galactic High-Velocity Clouds, that ...
FRATERNALI, FILIPPO
core +1 more source
Diverse Pathways for Supermassive Black Hole–Galaxy Coevolution
The Astrophysical JournalSupermassive black holes (SMBHs) are observed in diverse galaxy populations across cosmic time, yet a clear understanding of how they coevolve with their hosts has not been reached.
Bryan A. Terrazas +2 more
doaj +1 more source
Investigation on tunnel stability considering pipe‐roof support with transparent soil technology
Deep Underground Science and Engineering, EarlyView.This study integrates transparent soil technology, 3D reconstruction and numerical simulation to captures the full‐field deformation of shield tunnel instability. Results demonstrate that pipe‐roof support enhances stability via the “soil‐arching barrier effect,” effectively restraining failure wedge development by extending stress transfer paths ...
Zhi Jia +4 more
wiley +1 more source
The Physics of Galaxy Accretion
How do galaxies get the gas needed to fuel star formation?' remains a fundamental open question, even for the Milky-Way. I will review recent theoretical developments in galaxy accretion physics, which go beyond the classic separation between 'cold' and 'hot' accretion. I will also discuss the potential implications of different accretion modes for the
Stern, Jonathan +8 more
openaire +1 more source
Spherical accretion in nearby weakly active galaxies [PDF]
Astronomy & Astrophysics, 2006 We consider the sample of weakly active galaxies situated in 'Local Universe' collected in the paper of Pellegrini (2005) with inferred accretion efficiencies from $10^{-2}$ to $10^{-7}$. We apply a model of spherically symmetrical Bondi accretion for given parameters ($M_{BH}$,$T_{\infty}$,$ρ_{\infty}$,) taken from observation.
openaire +2 more sources