Results 71 to 80 of about 365 (183)

Massive Extremely High-velocity Outflow in the Quasar J164653.72+243942.2

The Astrophysical Journal
We present analysis of one of the most extreme quasar outflows found to date in our survey of extremely high-velocity outflows (EHVOs). J164653.72+243942.2 ( z _em  ∼ 3.04) shows variable C iv λλ 1548,1551 absorption at speeds larger than 0.1 c ...
Paola Rodríguez Hidalgo, Hyunseop Choi, Patrick B. Hall, Karen M. Leighly, Liliana Flores, Mikel M. Charles, Cora DeFrancesco, Julie Hlavacek-Larrondo, Laurence Perreault-Levasseur   +8 more
doaj   +1 more source

Variability in Quasar Broad Absorption Line Outflows

, 2012
5 pages, proceedings for the conference "AGN Winds in Charleston", Charleston, S.C ...
Capellupo, Daniel M., Hamann, Fred, Shields, Joseph C., Halpern, Jules, Hidalgo, Paola Rodríguez, Barlow, Tom A.   +5 more
openaire   +2 more sources

The Marriage of Metal Nanoclusters With Reticular Frameworks: Synthetic Strategies and Biomedical Applications

Aggregate, Volume 7, Issue 2, February 2026.
The integration of metal nanoclusters (MNCs) with reticular frameworks (RFs) has recently emerged as a powerful strategy to create composite materials with enhanced and synergistic functionalities. This review provides an overview of the synthetic strategies developed for constructing MNCs/RFs composites and their recent advances in biomedical ...
Wenfeng Liu, Qinyin Yin, Li‐Li Tan, Li Shang   +3 more
wiley   +1 more source

Machine Learning–Driven Near‐ and Mid‐Infrared Chemometrics for Rapid, Cost‐Effective COVID‐19 Screening in Dried Plasma

Journal of Chemometrics, Volume 39, Issue 12, December 2025.
ABSTRACT The COVID‐19 pandemic has highlighted the urgent need for rapid, accurate, and cost‐effective diagnostic alternatives to conventional methods such as RT‐qPCR and immunoassays. In this study, we explored the potential of vibrational spectroscopy, specifically near‐infrared (NIR) and mid‐infrared (MID) spectroscopy, for detecting SARS‐CoV‐2 ...
Fernanda F. S. Oliveira, Wilson J. Cardoso, Luiz F. P. Ramos, Túlio R. Freitas, Priscilla S. Filgueiras, Rafaella F. Q. Grenfell, Reinaldo F. Teófilo, Adriano de Paula Sabino   +7 more
wiley   +1 more source

Localized Energy Absorption through LaB6 Surface Modification of PA12 Enables Enhanced Tensile Performance in Diode Laser PBF‐LB

Chemistry–Methods, Volume 5, Issue 12, November 2025.
LaB6 surface modification of PA12 enables efficient NIR diode laser PBF‐LB processing, with enhanced tensile strength and tailored microstructures achieved at minimal additionaly energy. By reducing the need for high filler content, this approach expands the options and performance levels of advanced industrial‐grade polymer additive manufacturing. The
Nadine Stratmann, Michael Willeke, Simon Leupold, Kateryna Loza, Arne Lüddecke, Arno Kwade, Michael Schmidt, Stephan Barcikowski, Anna Rosa Ziefuss   +8 more
wiley   +1 more source

Comprehensive Connection among the Quasars with Different Types of Outflow Absorption Lines

The Astrophysical Journal
It is commonly accepted that outflows from the central regions of quasars play a substantial role in regulating the global properties of the host galaxy. These outflows are typically detected through blueshifted absorption lines.
Xing-Long Peng, Zhi-Fu Chen, Zhi-Cheng He, Ting-Ting Pang, Zhi-Wen Wang   +4 more
doaj   +1 more source

3D SR‐μXCT analysis for lithology detection: Application to Ryugu sample A0159

Meteoritics &Planetary Science, Volume 60, Issue 11, Page 2623-2654, November 2025.
Abstract Extraterrestrial breccia samples are formed through impact‐related processes that combine the fragments of distinct lithologies. As such, they are valuable indicators of the complex formation and evolution history of planetesimals in our solar system.
Léna Jossé, Zélia Dionnet, Alice Aléon‐Toppani, Rosario Brunetto, Andrew King, Emmanuel Gardés, Eva Heripré, Damien Loizeau, Sasha Cryan, Kentaro Hatakeda   +9 more
wiley   +1 more source

Fading Light, Fierce Winds: JWST Snapshot of a Sub-Eddington Quasar at Cosmic Dawn

The Astrophysical Journal Letters
The majority of most luminous quasars during the epoch of reionization accrete near or above the Eddington limit, marking the vigorous growth of primitive supermassive black holes (SMBHs).
Jianwei Lyu, George H. Rieke, Meredith Stone, Jane Morrison, Stacey Alberts, Xiangyu Jin, Yongda Zhu, Weizhe Liu, Jinyi Yang   +8 more
doaj   +1 more source

Quasar Winds Caught on Acceleration and Deceleration

The Astrophysical Journal Supplement Series
We present an observational study of wind acceleration based on four low-ionization broad absorption line (BAL) quasars (J0136, J1238, J1259, and J1344).
Weimin Yi, P. B. Hall, Zunli Yuan, W. N. Brandt, D. P. Schneider, Zhicheng He, Jin-Ming Bai, Xue-Bing Wu   +7 more
doaj   +1 more source

Extreme outflow velocities and weak UV emission lines indicate quasars shedding their dust cocoons

Astronomy & Astrophysics
The recently discovered low-ionisation broad absorption line (LoBAL) quasar GQ 1309+2904 is unusual due to its very broad, highly blueshifted absorption troughs and an absence of broad emission lines except for Hα.
Ma Guozhen, Geier Stefan J., Fynbo Johan P. U., Christensen Lise, Berdyugin Andrei, Frederiksen Rasmus, Heintz Kasper E., Henriksen Phillip D., Krogager Jens-Kristian, Ledoux Cédric, Piirola Vilppu, Møller Palle, Vejlgaard Simone, Choi Hyunseop   +13 more
doaj   +1 more source