Results 61 to 70 of about 85,255 (272)

The Discovery of a Gravitationally Lensed Quasar at z = 6.51 [PDF]

, 2018
Strong gravitational lensing provides a powerful probe of the physical properties of quasars and their host galaxies. A high fraction of the most luminous high-redshift quasars was predicted to be lensed due to magnification bias.
Bian, Fuyan, Bonaglia, Marco, Fan, Xiaohui, Georgiev, Iskren Y., Hennawi, Joseph F., Keeton, Charles R., Li, Jiangtao, McGreer, Ian D., Naidu, Rohan, Pacucci, Fabio, Rabien, Sebastian, Thompson, David, Venemans, Bram, Walter, Fabian, Wang, Feige, Wang, Ran, Wu, Xue-Bing, Yang, Jinyi, Yue, Minghao, Zabludoff, Ann   +19 more
core   +2 more sources

Hidden No More: Spotlight on Tidal Disruption Events in Active Galactic Nuclei

Astronomische Nachrichten, EarlyView.
ABSTRACT Tidal disruption events (TDEs) are typically discovered in previously quiescent galaxies. However, earlier studies have revealed a handful of TDEs occurring in pre‐existing active galactic nuclei (AGN). We discuss AT2019aalc, a promising TDE candidate in an AGN, and compare it to similar sources.
Patrik Milán Veres
wiley   +1 more source

On the link between associated MgII absorbers and star formation in quasar hosts

, 2012
A few percent of quasars show strong associated MgII absorption, with velocities (v_off) lying within a few thousand km/s from the quasar systemic redshift.
Bahcall, Bergeron, Brice Ménard, Canalizo, Glikman, Hennawi, Ho, Hopkins, Hopkins, Richards, Richards, Schneider, Shen, Shen, Steidel, Tremaine, Urrutia, Vanden Berk, Vanden Berk, Veilleux, Wyithe, Yue Shen, Zhu   +22 more
core   +1 more source

Gaussian Processes for Predictive QSAR Modeling of Chromatographic Processes

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Chromatography is a key unit operation in the biopharmaceutical manufacturing process used for protein purification and polishing. Design and optimization of these processes are resource‐intensive resulting from the complex combinatorial design space.
Harini Narayanan, Douglas Nolan, Lijuan Li, Edward King, Andrew Fiordalis, David Benjamin Nickel, George Parks, J. Christopher Love   +7 more
wiley   +1 more source

Quasar clustering: evidence for an increase with redshift and implications for the nature of AGNs [PDF]

, 1997
The evolution of quasar clustering is investigated with a new sample of 388 quasars with 0 ...
Bellenger R., Boyle B. J., Boyle B. J., Carrera F. J., Cavaliere A., Cristiani S., Croom S. M., Fabio La Franca, Franceschini A., Georgantopoulos I., Komberg B. V., Matarrese S., Paola Andreani, Shanks T., Shaver P. A., Soltan A., Stefano Cristiani, Zitelli V.   +17 more
core   +3 more sources

A structure for quasars

New Astronomy Reviews, 2000
We propose a simple unifying structure for the inner regions of quasars and AGN. This empirically derived model links together the BALs, the narrow UV/X-ray ionized absorbers, the BELR, and the Compton scattering/fluorescing regions into a single structure. The model also suggests an origin for the large-scale bi-conical outflows.
openaire   +3 more sources

Advancing Circular Strategies in Photovoltaics: Assessing Reuse Readiness Across Technical, Economic, and Environmental Dimensions in a Case Study

Progress in Photovoltaics: Research and Applications, EarlyView.
This study examines the reuse readiness of photovoltaic modules through the Swiss PV Circle project. Results confirm technical feasibility with cost savings from targeted preselection, whereas economic viability depends on module age, testing, and market conditions.
Roger Nyffenegger, Mija Frossard, Alexandre Voirol, Michael Gasser, Julien Winkelmann, Stefan Grösser, Nancy Bocken   +6 more
wiley   +1 more source

A Glimpse at Quasar Host Galaxy Far-UV Emission, Using DLAs as Natural Coronagraphs

, 2014
In merger-driven models of massive galaxy evolution, the luminous quasar phase is expected to be accompanied by vigorous star formation in quasar host galaxies. In this paper, we use high column density Damped Lyman Alpha (DLA) systems along quasar sight
Bian, Fuyan, Cai, Zheng, Carithers, Bill, Escude, Jordi Miralda, Fan, Xiaohui, Finley, Hayley, Ge, Jian, McGreer, Ian, Noterdaeme, Pasquier, Paris, Isabelle, Petitjean, Patrick, Schneider, Donald P., Slosar, Anze, Wang, Ran, Zakamska, Nadia L.   +14 more
core   +3 more sources

Posidonia oceanica Leaves as a Natural Filler for Poly(Butylene Succinate‐Co‐Adipate) Composites: Characterization and Biodegradation Assessment in Seawater

Journal of Vinyl and Additive Technology, EarlyView.
This study shows that incorporating 5–10 wt.% Posidonia oceanica, with or without micro‐talc, in PBSA preserves thermal stability, modifying crystallization behavior, and maintains good filler dispersion and interfacial adhesion. Mechanical properties are moderately stiffened.
Chiara Pedrotti, Damiano Rossi, Giovanni Raimondi, Riccardo Gallorini, Miriam Cappello, Irene Anguillesi, Marco Sandroni, Patrizia Cinelli, Maurizia Seggiani   +8 more
wiley   +1 more source

Comment on "Biases in the Quasar Mass-Luminosity Plane" [PDF]

, 2010
Comment on "Biases in the Quasar Mass-Luminosity Plane"Comment: Comment on Biases in the Quasar Mass-Luminosity Plane; 3 ...
Elvis, Martin, Steinhardt, Charles
core