Results 111 to 120 of about 1,237,003 (361)

The radio spectra of reddened Two Micron All Sky Survey quasi-stellar objects: evidence for young radio jets

, 2012
Multifrequency radio continuum observations (1.4–22 GHz) of a sample of reddened quasi-stellar objects (QSOs) are presented. We find a high incidence (13/16) of radio spectral properties, such as low-frequency turnovers, high-frequency spectral breaks or
A. Georgakakis, M. Grossi, J. Afonso, A. Hopkins   +3 more
semanticscholar   +1 more source

Recent Advances in Highly Luminescent Carbon Dots

Advanced Functional Materials, EarlyView.
Here, a comprehensive summary of the advancements is provided in highly luminescent carbon dots across various luminescence bands since their discovery in 2004. It systematically covers the synthesis, structural characteristics, preparation strategies, and essential purification of these carbon dots, along with their applications in efficient ...
Yupeng Liu, Zhujun Huang, Xuanye Wang, Yiming Hao, Junxiang Yang, Hui Wang, Songnan Qu   +6 more
wiley   +1 more source

Galactic jet sources and the AGN connection [PDF]

arXiv, 1995
In order to further test our hypothesis that jets and disk around compact accreting objects are symbiotic features we investigate the newly discovered superluminal galactic radio jets GRS 1915+105 and GRO J1655-40 and the two famous galactic radio jets 1E1740-2942 and SS 433 within the framework of our couple jet/disk model developed initially for ...
arxiv  

Multidirectionally Patterned Interdigital Transducers for Enhancing Acoustofluidic Streaming with Flexible Printed Circuit Board

Advanced Functional Materials, EarlyView.
A reconfigurable and multidirectional interdigital transducer (M‐IDT) on a flexible printed circuit board provides a practical platform for acoustofluidic research. It simplifies and accelerates prototyping, enabling cost‐effective exploration of wave modes and fluid dynamics.
Mercedes Stringer, Povilas Dumčius, Xiaoyan Zhang, Yanyan Chai, Ziming Zeng, Zhiqiang Dong, Chao Sun, Dongfang Liang, Guangbo Ge, Yongqing Fu, Zhenlin Wu, Xin Yang   +11 more
wiley   +1 more source

Parsec-Scale Kinematic and Polarization Properties of MOJAVE AGN Jets

EPJ Web of Conferences, 2013
We describe the parsec-scale kinematics and statistical polarization properties of 200 AGN jets based on 15 GHz VLBA data obtained between 1994 Aug 31 and 2011 May 1.
Lister Matthew L.
doaj   +1 more source

A Proof‐of‐Principle Demonstration: Exploring the Effect of Anode Layer Microstructure on the Alkaline Oxygen Evolution Reaction

Advanced Functional Materials, EarlyView.
Highlighting the importance of anode microstructure for alkaline OER, ultrasonic spray coating is applied at two different temperatures. This proof‐of‐concept approach yielded varied morphologies, structures, wettability and mechanical strength. These variations led to noticeable performance changes in activity after 8 h of measurements, comparing the ...
Adarsh Jain, Christian Marcks, Lars Grebener, Jacob Johny, Ahammed Suhail Odungat, Mohit Chatwani, Mena‐Alexander Kräenbring, Abhishek Shaji, Marc Frederic Tesch, Anna K. Mechler, Vineetha Vinayakumar, Doris Segets   +11 more
wiley   +1 more source

The Jets in Radio Galaxies

The Observatory, 1997
This thesis describes two studies of extragalactic radio sources at high resolution and sensitivity. Most of the well-known facts about radio sources come from low-resolution imaging, despite the fact that much of the interesting physics (that of the jets and hotspots) occurs on scales that are small compared to the overall source size.
openaire   +2 more sources

Shape‐Reconfigurable Crack‐Based Strain Sensor with Ultrahigh and Tunable Sensitivity

Advanced Functional Materials, EarlyView.
A highly sensitive crack‐based sensor with tunable strain detection capabilities is demonstrated through controlled nanocrack formation in a line‐patterned shape memory polymer substrate. The sensor design integrates thermoplastic polyurethane and poly(lactic acid), enabling thermo‐responsive reconfiguration of crack geometry.
Seungjae Lee, Youngoh Lee, Cheolhong Park, Yun Goo Ro, Min Sub Kwak, Geonyoung Jeong, Junseo Park, Hyejin Lee, Pan Kyeom Kim, Sung‐Il Chung, Hyunhyub Ko   +10 more
wiley   +1 more source

A Simulation Study of Low-power Relativistic Jets: Flow Dynamics and Radio Morphology of FR-I Jets

The Astrophysical Journal
Radio galaxies are classified into two primary categories based on their morphology: center-brightened FR-I and edge-brightened FR-II. It is believed that the jet power and interactions with the ambient medium govern the deceleration and decollimation of
Ayan Bhattacharjee, Jeongbhin Seo, Dongsu Ryu, Hyesung Kang   +3 more
doaj   +1 more source

Relativistic Jets in Radio-Weak Quasars and LINER Galaxies [PDF]

arXiv, 1997
We discuss radio observations of a sample of radio-weak and radio-intermediate quasars which demonstrate that - just like their radio-loud counterparts - radio-weak quasars too have relativistic jets in their nuclei. Moreover, a VLA survey of nearby LINER galaxies reveals a relatively large number of flat-spectrum radio cores.
arxiv