Results 101 to 110 of about 47,708 (236)
On the Subparsec-scale Core Composition of FR 0 Radio Galaxies
The Astrophysical Journal Letters, 2023 Although Fanaroff–Riley type 0 (FR 0) radio galaxies are known to be the most numerous jet population in the local Universe, they are much less explored than the well-established class of FR type I (FR I) and FR type II galaxies due to their intrinsic ...
Margot Boughelilba, Anita Reimer
doaj +1 more source
The Bochum Survey of the Southern Galactic Disk: III. Complete Data Release
Astronomische Nachrichten, Volume 347, Issue 3, March 2026.ABSTRACT The Southern Galactic Disk Survey (GDS) monitored a mosaic of 268 fields along a 6°$$ {6}^{{}^{\circ}} $$‐wide stripe in the southern Galactic disk with simultaneous observations in r′$$ {r}^{\prime } $$ and i′$$ {i}^{\prime } $$ (7m≲r′,i′≲18m$$ {7}^{\mathrm{m}}\lesssim {r}^{\prime },{i}^{\prime}\lesssim {18}^{\mathrm{m}} $$) from September ...
Julia Blex +8 more
wiley +1 more source
Hot, Cold, and Multicomponent Accretion Flows around Supermassive Black Hole Binaries
The Astrophysical JournalWe develop a model for supermassive black hole binaries (SMBHBs) accreting below their Eddington limit, focusing on systems where hot, advection-dominated flows become viable.
Christopher Tiede, Daniel J. D’Orazio
doaj +1 more source
Quasars and their emission lines as cosmological probes
, 2013 Quasars are the most luminous sources in the Universe. They are currently observed out to redshift z ~ 7 when the Universe was less than one tenth of its present age.
Marziani, Paola, Sulentic, Jack W.
core +1 more source
Small Methods, Volume 10, Issue 4, 23 February 2026.Upconversion nanoparticle photoluminescence was used to quantify heat burden during femtosecond direct laser writing of bioinks in real time. Transient temperature spikes above 120–140°C demonstrate the need for a stringent process optimization, and fast 20 µm/s scan speeds were established to maintain physiological conditions.
Amirbahador Zeynali +2 more
wiley +1 more source
The Astrophysical JournalThe structure of accretion flows in low-luminosity active galactic nuclei (AGNs) at low Eddington ratios (∼10 ^−2 –10 ^−3 ) are poorly understood, and can be probed using the spectral energy distributions (SEDs) of faded changing-look (CL) quasars ...
Olivier Gilbert +9 more
doaj +1 more source
The diversity of quasars unified by accretion and orientation
, 2014 Quasars are rapidly accreting supermassive black holes at the center of massive galaxies. They display a broad range of properties across all wavelengths, reflecting the diversity in the physical conditions of the regions close to the central engine ...
Ho, Luis C., Shen, Yue
core +1 more source
Estimation of Central Black Hole Masses in Low-Luminosity Active Galactic Nuclei [PDF]
Publications of the Astronomical Society of Japan, 2001 Abstract We analyzed six low-luminosity active galactic nuclei (hereafter LLAGNs), which consist of two bright LINERs (low-ionization nuclear emission line region) with broad H$ \alpha$, and of four bright low-luminosity Seyferts observed by the X-ray satellite ASCA.
Hisamitsu Awaki +3 more
openaire +1 more source
Galactic Cosmic Ray Ionization on Uranus; Geomagnetic Latitude Dependencies
Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.Abstract Galactic Cosmic Rays (GCRs) are a major source of atmospheric ionization, influencing ion abundance, aerosol formation, and electrical processes. GCR‐induced effects are expected to be more pronounced on Uranus than planets closer to the Sun for two reasons; reduced solar irradiance, and weaker solar modulation of incident GCR.
Ola Al‐Khuraybi +2 more
wiley +1 more source