Results 81 to 90 of about 4,278,679 (301)
Fe K emission from active galaxies in the COSMOS field [PDF]
, 2011 We present a rest-frame spectral stacking analysis of ∼1000 X-ray sources detected in the XMM-COSMOS field to investigate the iron-K line properties of active galaxies beyond redshift z ∼ 1. In Type I AGN that have a typical X-ray luminosity of LX ∼ 1.5 ×
K. Iwasawa +18 more
semanticscholar +1 more source
Business Strategy and the Environment, EarlyView.ABSTRACT As the urgency to address global crises such as climate change and inequality intensifies, the concept of regenerative development has emerged as a transformative approach going beyond sustainability to actively restore and enhance both ecological and social systems.
Leonie Paul +3 more
wiley +1 more source
The Astrophysical JournalWe report the analysis of ∼1 Ms of XMM-Newton observations of the rapidly accreting active galactic nucleus RE J1034+396. The 0.3–9 keV EPIC-pn spectra are well described by a model consisting of steep continuum emission from the corona accompanied by ...
Chloe S. Taylor +2 more
doaj +1 more source
The connection between radio loudness and central surface brightness profiles in optically selected low-luminosity active galaxies [PDF]
, 2011 Recent results indicate a correlation between nuclear radio loudness of active galaxies and their central stellar surface-brightness profiles, in that ‘core’ galaxies (with inner logarithmic slope γ≤ 0.3) are significantly more radio loud than ‘power-law’
A. J. Richings, P. Uttley, E. Körding
semanticscholar +1 more source
Chemistry &Biodiversity, EarlyView.ABSTRACT This study evaluated the preservative potential of essential oils (EOs) in bakery products by identifying fungal contaminants in bread, testing the in vitro antifungal activity of a mixture of cinnamon, clove, and bay leaf EOs, and assessing their effectiveness in extending shelf life. Fungal identification revealed the presence of Penicillium,
Mariana Pereira Silveira +7 more
wiley +1 more source
The Infrared Traced Star Formation Rates of Associated Absorption Lines Quasars
The Astrophysical JournalSome optically selected quasars exhibit Mg ii- associated absorption lines (AALs), and their origin remains unclear. In this paper, we compile a sample of 1769 quasars, with or without Mg ii AALs, of which 1689 are far-infrared (FIR) detected quasars and
Zhe-Geng Chen +6 more
doaj +1 more source
Dense molecular gas in nearby gas-rich active galaxies [PDF]
, 2011 We present 3-mm observations obtained with the Institut de Radioastronomie Millimetrique (IRAM) 30-m telescope for 10 nearby gas-rich active galaxies spanning three orders of magnitude in infrared luminosity. Emission lines of HCO+(1–0), HCN(1–0) and C2H(
Xuejian Jiang, Junzhi Wang, Q. Gu
semanticscholar +1 more source
Kiloparsec-scale Neutral Iron Kα Emission in the Starburst-AGN NGC 4945: A Relic AGN Outflow?
The Astrophysical JournalNGC 4945 contains a well-known heavily obscured active galactic nucleus (AGN) at its core, with prior reports of strong nuclear and off-nuclear neutral Fe K α emission due to the AGN activity. We report the discovery of very extended Fe K α emission with
Kimberly A. Weaver +10 more
doaj +1 more source
Observational Tests of Active Galactic Nuclei Feedback: An Overview of Approaches and Interpretation [PDF]
GalaxiesGrowing supermassive black holes (Active Galactic Nuclei; AGN) release energy with the potential to alter their host galaxies and larger-scale environment; a process named “AGN feedback”.
C. Harrison, C. Ramos Almeida
semanticscholar +1 more source
Large scale environments of z<0.4 active galaxies [PDF]
, 2011 Properties of galaxies depend on their large-scale environment. As the influence of active galactic nuclei (AGN) in galaxy evolution is becoming more evident, their large scale environments may help us understand the evolutionary processes leading to ...
H. Lietzen +7 more
semanticscholar +1 more source