Results 121 to 130 of about 3,423,233 (292)

The Remarkable Predictive Power of Infrared Data of Blazars

The Astrophysical Journal
Blazars are the brightest and most abundant persistent sources in the extragalactic γ -ray sky. Due to their significance, they are often observed across various energy bands, where the data of which can be used to explore potential correlations between ...
P. Giommi, N. Sahakyan, D. Israyelyan, M. Manvelyan   +3 more
doaj   +1 more source

Bioimage management and analysis in Galaxy: Tools, workflows, training, and community practices

Journal of Microscopy, EarlyView.
ABSTRACT Image analysis in the life sciences is constrained by fragmented software ecosystems, heterogeneous data formats, and limited reproducibility. These barriers hinder the reuse of image analysis methods and the sustainability of tools. In this article, we describe how the Galaxy platform enables FAIR (Findable, Accessible, Interoperable, and ...
Leonid Kostrykin, Riccardo Massei, Diana Chiang, Thomas Wollmann, Jean‐Marie Burel, David Lopez Tabernero, Yi Sun, Qi Gao, Maarten W. Paul, Pavankumar Videm, Cameron Watson, Daniel Franco‐Barranco, Anup Kumar, Nadia Goué, Reyhaneh Tavakoli Koopaei, Vladimír Ulman, Khaled Jum'ah, Krzysztof Poterlowicz, Martin Etzrodt, Arrate Muñoz‐Barrutia, Sylvia E. Le Dévédec, Josh Moore, Jeremy Goecks, Bjoern Gruening, Karl Rohr, Beatriz Serrano‐Solano   +25 more
wiley   +1 more source

Probing the Physical Origin of the Balmer Decrement in the Broad-line Region of Nearby Active Galactic Nuclei via Spectral Variability

The Astrophysical Journal
To investigate the physical origin of the Balmer decrement in the broad-line region of active galactic nuclei (AGNs), we measure the temporal variability of the fluxes of the broad H β and H α emission lines using multiepoch spectroscopic data of low ...
Suyeon Son, Minjin Kim, Luis C. Ho, Ruancun Li   +3 more
doaj   +1 more source

The Host Galaxy Fluxes of Active Galaxy Nuclei Are Generally Overestimated by the Flux Variation Gradient Method

Universe
In terms of the variable nature of normal active galaxy nuclei (AGN) and luminous quasars, a so-called flux variation gradient (FVG) method has been widely utilized to estimate the underlying non-variable host galaxy fluxes.
Minxuan Cai, Zhen Wan, Zhenyi Cai, Lulu Fan, Junxian Wang   +4 more
doaj   +1 more source

Galaxies in turmoil: the active and starburst galaxies and the black holes that drive them

, 2007
Aimed at active amateur astronomers this book provides an up-to-date account of active galaxies. Lists and images of such objects are an important component of this book.
Kitchin, C R, Kitchin, Chris
core   +1 more source

Feedback and Contagion through Distressed Competition

The Journal of Finance, EarlyView.
ABSTRACT Firms tend to compete more aggressively when facing financial distress. This intensified competition reduces profit margins, pushing them further into distress and adversely affecting their industry peers. To study such feedback and contagion effects, we incorporate strategic competition in a dynamic model with long‐term defaultable debt ...
HUI CHEN, WINSTON WEI DOU, HONGYE GUO, YAN JI   +3 more
wiley   +1 more source

Are There Higher Electron Densities in Narrow Emission Line Regions of Type-1 AGNs than in Type-2 AGNs?

The Astrophysical Journal
In the manuscript, we check properties of electron densities n _e traced by flux ratio R _sii of [S ii ] λ 6716 Å to [S ii ] λ 6731 Å in narrow emission line regions (NLRs) between Type-1 active galactic nucleus (AGN) and Type-2 AGN in SDSS Data Release ...
XueGuang Zhang
doaj   +1 more source

The complex relationships between active galactic nuclei, bars, and bulges

Astronomy & Astrophysics
Context. Via scaling relations, it is well known that active galactic nuclei (AGNs) and bulges are linked. This link was thought to be driven by mergers, but recent studies show that secular processes are the dominant mechanism of supermassive black hole
Garland I. L., Best H., Fortson L. F., Géron T., Lintott C. J., O’Ryan D., Simmons B. D., Smethurst R. J., Viskotová M., Walmsley M., Werner N., Zajaček M.   +11 more
doaj   +1 more source

Disney's Auteur Problem: Framing Corporate Creativity in a Galaxy Far, Far Away

The Journal of Popular Culture, EarlyView.
ABSTRACT At its core, Star Wars is a franchise George Lucas has led via his auteur vision. Since Lucas handed over the franchise reins to Disney, the company has courted several other auteurs to direct new entries in the series—each of those endeavors ended problematically.
Zachary Sheldon
wiley   +1 more source

Broad-line Regions behind Haze: The Intrinsic Shape of the Brγ Line and Its Origin in a Type 1 Seyfert Galaxy

The Astrophysical Journal
The broad-line region (BLR) of active galactic nuclei is an essential component, yet its small size keeps its origin, structure, and kinematics uncertain.
Keiichi Wada, Tohru Nagao, Taro Shimizu, Daryl Joe D. Santos, Jinyi Shangguan, Richard Davies   +5 more
doaj   +1 more source