Results 71 to 80 of about 341,567 (228)
$z\sim2$ dual AGN host galaxies are disky: stellar kinematics in the ASTRID Simulation
The Open Journal of AstrophysicsWe study dual AGN host galaxy morphologies at $z=2$ using the ASTRID simulation, selecting black hole (BH) pairs with small separation ($\Delta r10^7M_\odot$), and luminosity ($L_{\text{bol,12}}>10^{43}\rm{erg/s}$).
Ekaterine Dadiani +8 more
doaj +1 more source
Journal of Forensic Sciences, Volume 71, Issue 5, Page 2070-2087, September 2026.Abstract Smartphone manufacturers' enhanced privacy and security measures, such as File‐Based Encryption (FBE), have disrupted traditional data extraction techniques, necessitating the adoption of Full File System Extraction (FFS). FFS requires booting a smartphone, decrypting its UserData partition, and accessing files individually, a process that ...
Sanghyun Yoo, Yunji Park, Doowon Jeong
wiley +1 more source
Secular evolution in disk galaxies [PDF]
, 2013 159 pages, 84 postscript figures, 3 tables, LaTeX, requires tweaked cupbook.cls; published in Secular Evolution of Galaxies, XXIII Canary Islands Winter School of Astrophysics, ed. J Falcon-Barroso & J. H.
openaire +2 more sources
Dynamics of the disks of nearby galaxies [PDF]
Astronomische Nachrichten, 2008 AbstractI describe how the dynamics of galactic disks can be inferred by imaging and spectroscopy. Next I demonstrate that the decomposition of the rotation curves of spiral galaxies into the contributions by the various components of the galaxies is highly degenerate.
openaire +2 more sources
On the evolution of disk galaxies [PDF]
Publications of the Astronomical Society of the Pacific, 1991 galaxies is presented. A numerical code that simulates the gravitatIonal contraction of a galaxy since the protogalactic phase has been developed. The models are based on a balance between the turbulent energy dissipation of the gas and the energy input from supernovae, the star formation being regulated by the gas conditions through Schmidt's law. The
C. Firmani, A. Miranda, A. Tutukov
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Estimate of SMBH Spin for Narrow-Line Seyfert 1 Galaxies
, 2023 We estimated the spin values of the supermassive black holes (SMBHs) of the active galactic nuclei (AGN) for a large set of Narrow Line Seyfert 1 (NLS1) galaxies assuming the inclination angle between the line of sight and the axis of the accretion disk ...
Mikhail Piotrovich +2 more
core +1 more source
H i Observations of Giant Low Surface Brightness Galaxies
The Astrophysical JournalGiant low surface brightness (gLSB) galaxies are galaxies with extremely extended, faint, optical disks over 50 kpc in radius and have high total masses, which can reach 10 ^12 M _⊙ .
Philip Lah +7 more
doaj +1 more source
The Stability of Some Galaxy Disks is Still Perplexing
The Astrophysical Journal, 2023 The problem of how some disk galaxies avoid forming bars remains unsolved. Many galaxy models having reasonable properties continue to manifest vigorous instabilities that rapidly form strong bars and no widely accepted idea has yet been advanced to ...
J. A. Sellwood, R. G. Carlberg
doaj +1 more source
The Great Cosmic Silence: What Does the Fermi Paradox Tell About the Future of Humanity?
Global Policy, Volume 17, Issue 4, Page 553-565, September 2026.ABSTRACT This article examines how institutional time horizons shape the long‐term survival prospects of human technological civilisation. While research on global catastrophic and existential risks has expanded, the temporal structures of political‐economic institutions remain underexamined.
Heikki Patomäki
wiley +1 more source
Optical polarimetry studies of Seyfert galaxies [PDF]
, 1999 Optical imaging polarimetry has been performed on seven nearby Seyfert galaxies, three with face-on and four with edge-on host galaxies of various morphological classifications.
Felton, Michelle Ann
core