Results 141 to 150 of about 77,605 (280)

Improved Simulation of Particle Number Concentrations Over the US: Integrating a Size‐Resolved Advanced Particle Microphysics Model Into CMAQ

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 16, 28 August 2025.
Abstract Accurate representation of aerosol size distributions and total number concentrations is critical for evaluating particle impacts on climate, clouds, and public health. An Advanced Particle Microphysics model (APM) has been integrated into the USEPA's Community Multiscale Air Quality Modeling System (CMAQ) to improve its representation of ...
Jingbo Mao, Fangqun Yu, Benjamin N. Murphy, Jingyu An, Yan Zhang, Gan Luo, Shao Lin, A. Gannet Hallar   +7 more
wiley   +1 more source

Jets in Active Galactic Nuclei

, 2009
26 pages, 9 figures, To appear in Belloni, T. (ed.): The Jet Paradigm - From Microquasars to Quasars, Lect. Notes Phys. 794 (2009)
openaire   +3 more sources

Effects of superradiance in active galactic nuclei

Monthly Notices of the Royal Astronomical Society
ABSTRACT A supermassive black hole (SMBH) at the core of an active galactic nucleus (AGN) provides room for the elusive ultra-light scalar particles to be produced through a phenomenon called superradiance. This phenomenon produces a cloud of scalar particles around the black hole by draining its spin angular momentum.
Priyanka Sarmah, Himanshu Verma, Kingman Cheung, Joseph Silk   +3 more
openaire   +3 more sources

Varstrometry for Dual Active Galactic Nuclei Using Radio Interferometry: VaDAR with the VLBA

The Astrophysical Journal
Multiple active galactic nuclei (multi-AGN) are a known result of galaxy mergers. Therefore, they are an important tool for studying the formation and dynamical evolution of galaxies and supermassive black holes. A novel method for the selection of multi-
Emma Schwartzman, Paula Fudolig, Tracy E. Clarke, Kristina Nyland, Nathan J. Secrest, Ryan W. Pfeifle, Henrique Schmitt, Shobita Satyapal, Barry Rothberg   +8 more
doaj   +1 more source

Cosmic X-ray Background from Early Active Galactic Nuclei [PDF]

, 1989
A. A. Zdziarski
openalex   +1 more source

First Evidence for a Quasiperiodic Oscillation Triplet and Its Relativistic Precession Origin in RE J1034+396

The Astrophysical Journal
Quasiperiodic oscillations (QPOs) in active galactic nuclei (AGNs) provide a powerful tool for probing the structure of the innermost accretion flow and corona around supermassive black holes.
Ruisong Xia, Yongquan Xue, Jialai Wang, Hao Liu   +3 more
doaj   +1 more source

Penrose pair production as a power source of quasars and active galactic nuclei

, 1979
M. Kafatos, D. Leiter
openalex   +1 more source

Anisotropic induced Compton scattering - Constraints on models of active galactic nuclei [PDF]

, 1993
P. Coppi, R. D. Blandford, M. J. Rees
openalex   +1 more source

XRISM Spectroscopy of Accretion-driven Wind Feedback in NGC 4151

The Astrophysical Journal Letters
The hottest, most ionized, and fastest winds driven by accretion onto massive black holes have the potential to reshape their host galaxies. Calorimeter-resolution X-ray spectroscopy is the ideal tool to understand this feedback mode, as it enables ...
Xin Xiang, Jon M. Miller, Ehud Behar, Rozenn Boissay-Malaquin, Laura Brenneman, Margaret Buhariwalla, Doyee Byun, Chris Done, Luigi Gallo, Dimitra Gerolymatou, Scott Hagen, Jelle Kaastra, Stephane Paltani, Frederick S. Porter, Richard Mushotzky, Hirofumi Noda, Missagh Mehdipour, Takeo Minezaki, Makoto Tashiro, Abderahmen Zoghbi   +19 more
doaj   +1 more source

The radiative deceleration of ultrarelativistic jets in active galactic nuclei

, 1989
Fulvio Melia, Arieh Königl
openalex   +1 more source