Results 61 to 70 of about 36,135 (283)

Very high-resolution radio observations of HzRGs

, 2005
We report on first results of an ongoing effort to image a small sample of high-redshift radio galaxies (HzRGs) with milliarcsecond (mas) resolution, using very-long-baseline interferometry (VLBI) techniques.
De Breuck, Carlos, Miley, George, Perez-Torres, Miguel A., van Breugel, Wil   +3 more
core   +1 more source

Radio interferometry by lunar reflections

The Astrophysical Journal, 1990
The use of the moon as a passive reflector for radio interferometry experiments with baselines on the order of the radius of the orbit of the moon is discussed. Because of the extreme loss in the lunar interferometer path, only exceptionally strong point sources are candidates for this kind of interferometry.
T. Hagfors, J. A. Phillips, L. Belkora
openaire   +1 more source

Fourier phase analysis in radio-interferometry [PDF]

Astronomy & Astrophysics, 2006
Most statistical tools used to characterize the complex structures of the interstellar medium can be related to the power spectrum, and therefore to the Fourier amplitudes of the observed fields. To tap into the vast amount of information contained in the Fourier phases, one may consider the probability distribution function (PDF) of phase increments ...
Levrier, François, Falgarone, Edith, Viallefond, Francois   +2 more
openaire   +4 more sources

Cinnamic‐Hydroxamic‐Acid Derivatives Exhibit Antibiotic, Anti‐Biofilm, and Supercoiling Relaxation Properties by Targeting Bacterial Nucleoid‐Associated Protein HU

Advanced Science, EarlyView.
Cinnamic‐hydroxamic‐acid derivatives (CHADs) are identified as novel inhibitors of the bacterial nucleoid‐associated protein HU, exhibiting potent antibacterial, anti‐biofilm (both inhibition and eradication), and DNA relaxation (anti‐supercoiling) activities. Moreover, CHADs demonstrate strong synergistic effects with multiple antibiotics.
Huan Chen, Yingqi Xu, Zhaoping Xiong, Hongliang Wang, Xin Wang, Yue Kang, Zhonglin Wang, Xiaoyan Zeng, Yahui Liu, Yehuan Zheng, Wei Chen, Mengzhe Li, Zhenyue Hu, Chi Xu, Yue Wu, Yawen Wang, Zuyi Yuan, Shuai Yuan, Huadong Liu, Steve Matthews, Nan Qiao, Yan Li, Bing Liu   +22 more
wiley   +1 more source

EVN observations of the farthest and brightest ULIRGs in the local Universe: the case of IRAS 23365+3604

, 2012
We present high-resolution, high-sensitivity radio images of the ultra-luminous infrared galaxy (ULIRG) IRAS 23365+3604. We performed contemporaneous observations at 1.7 and 5.0 GHz, in three epochs separated by one year from each other, with the ...
Alberdi, Antxon, Pérez-Torres, Miguel Ángel, Romero-Cañizales, Cristina   +2 more
core   +1 more source

Multi‐Soliton Microcombs Enable Ultrafast Nanometric‐Precision Ranging and Photon‐Level Detection

Advanced Science, EarlyView.
Our work first demonstrates dual‐multi‐soliton ranging and confirms its multifunctional capability. The method achieves ultrafast and nanometric‐precision measurement. For practical applications, we further extend the multi‐soliton states to photon‐level ranging.
Jiawen Zhi, Xiaoyang Guo, Xusheng Yang, Brent E. Little, Sai T. Chu, Chenggang Shao, Mengyu Wang, Yan Liang, Peng Xie, Weiqiang Wang, Hanzhong Wu   +10 more
wiley   +1 more source

Linear Polarization Properties of Parsec-Scale AGN Jets

Galaxies, 2017
We used 15 GHz multi-epoch Very Long Baseline Array (VLBA) polarization sensitive observations of 484 sources within a time interval 1996–2016 from the MOJAVE program, and also from the NRAO data archive.
Alexander B. Pushkarev, Yuri Y. Kovalev, Matthew L. Lister, Tuomas Savolainen, Margo F. Aller, Hugh D. Aller, Mary A. Hodge   +6 more
doaj   +1 more source

Very Long Baseline Interferometry imaging of H2O maser emission in the nearby radio galaxy NGC 4261 [PDF]

, 2023
Satoko Sawada‐Satoh, Nozomu Kawakatu, Kotaro Niinuma, Seiji Kameno   +3 more
openalex   +1 more source

Origins of Graphite Resistivity: Decoupling Stacking Fault and Rotational Misorientation

Advanced Science, EarlyView.
Interfacial dislocations critically influence interlayer transport in van der Waals (vdW) materials, yet quantifying their individual contributions remains challenging. We measure graphite's c‐axis resistivity and develop a decoupling strategy, revealing a resistivity ratio of ∼4507:74:1 for rotational misorientations, stacking faults, and AB stacking,
Weipeng Chen, Fuwei Yang, Tielin Wu, Yelingyi Wang, Quanshui Zheng, Deli Peng, Zhanghui Wu   +6 more
wiley   +1 more source

Evidence for Helical Magnetic Fields Associated with AGN Jets and the Action of a Cosmic Battery

Galaxies, 2018
Theoretical models for the electromagnetic launching of astrophysical jets have long indicated that this process should generate helical magnetic fields, which should then propagate outward with the jet plasma.
Denise Gabuzda
doaj   +1 more source