Results 81 to 90 of about 140,601 (311)

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

An Extremely Active Repeating Fast Radio Burst Source in a Likely Nonmagneto-ionic Environment

The Astrophysical Journal
Fast radio bursts (FRBs) are bright radio bursts originating at cosmological distances. Only three repeating FRBs FRB 20121102A, FRB 20190520B, and FRB 20201124A among ∼60 known repeating FRBs have circular polarization.
Yi Feng, Di Li, Yong-Kun Zhang, Chao-Wei Tsai, Yuanhong Qu, Wei-Yang Wang, Yuan-Pei Yang, Pei Wang, Dengke Zhou, Jiarui Niu, Chenchen Miao, Mao Yuan, Jiaying Xu, Ryan S. Lynch, William Paul Armentrout, Brenne Gregory, Lingqi Meng, Shen Wang, Xianglei Chen, Shi Dai, Chen-Hui Niu, Mengyao Xue, Ju-Mei Yao, Bing Zhang, Junshuo Zhang, Weiwei Zhu, Jintao Xie, Yuhao Zhu   +27 more
doaj   +1 more source

Measurements of the Crab Pulsar’s Giant Radio Pulse Amplitude Power-law Index Using Low-frequency Arecibo and Green Bank Telescope Observations

The Astrophysical Journal, 2023
We report two low-frequency measurements of the power-law index for the amplitudes of giant radio pulses from the Crab pulsar. The two observations were taken with the Arecibo and Green Bank radio telescopes at center frequencies of 327 MHz and 350 MHz ...
Fronefield Crawford, T. Joseph W. Lazio, Alexander McEwen, Julia S. Deneva, James M. Cordes, Laura Spitler, Ryan F. Trainor   +6 more
doaj   +1 more source

LOFAR, a new low frequency radio telescope

, 2003
LOFAR, the Low Frequency Array, is a large radio telescope consisting of approximately 100 soccer-field sized antenna stations spread over a region of 400 km in diameter. It will operate at frequencies from ~10 to 240 MHz, with a resolution at 240 MHz of
Barthelmann, Carilli, Carilli, Cohen, De Breuck, Enßlin, Falcke, Huub Röttgering   +7 more
core   +2 more sources

Predicting Epileptogenic Tubers in Patients With Tuberous Sclerosis Complex Using a Fusion Model Integrating Lesion Network Mapping and Machine Learning

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Accurate localization of epileptogenic tubers (ETs) in patients with tuberous sclerosis complex (TSC) is essential but challenging, as these tubers lack distinct pathological or genetic markers to differentiate them from other cortical tubers.
Tinghong Liu, Qi Wang, Suhui Kuang, Dezhi Cao, Ping Ding, Shaohui Zhang, Haihua Wei, Zhirong Wei, Jinshan Xu, Xinyu Huang, Bing Liu, Shuli Liang   +11 more
wiley   +1 more source

A Comprehensive Study of the Energy and Redshift Distributions of the Fast Radio Burst Population Based on the First CHIME/FRB Catalog

The Astrophysical Journal
Fast radio bursts (FRBs) are brief, high-energy bursts of radio waves from extragalactic sources, and their origin remains an open question. In this paper, we perform a comprehensive analysis of the FRB population using the first CHIME/FRB catalog ...
Qing-Zhen Lei, Xin-Zhe Wang, Can-Min Deng   +2 more
doaj   +1 more source

SubmilliJansky Transients in Archival Radio Observations [PDF]

, 2007
[ABRIDGED] We report the results of a 944-epoch survey for transient sources with archival data from the Very Large Array spanning 22 years with a typical epoch separation of 7 days.
Alberto Bolatto, Alexei V. Filippenko, Amy S. W., Clark B. G., Daniel Perley, de Bruyn A. G., Destry Saul, Galama T. J., Geoffrey C. Bower, Joshua S. Bloom, Ryan J. Foley, Voges W.   +11 more
core   +2 more sources

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam, Anthony Siming Chen, Guido Herrmann   +2 more
wiley   +1 more source

Modeling Current and Future High-cadence Surveys of Repeating Fast Radio Burst Populations

The Astrophysical Journal
In recent years, the Canadian Hydrogen Intensity Mapping Experiment (CHIME) interferometer has revealed a large number of fast radio bursts (FRBs), including a sizable population that demonstrates repeating behavior.
Kyle McGregor, Duncan R. Lorimer
doaj   +1 more source

Realfast: Real-Time, Commensal Fast Transient Surveys with the Very Large Array

, 2018
Radio interferometers have the ability to precisely localize and better characterize the properties of sources. This ability is having a powerful impact on the study of fast radio transients, where a few milliseconds of data is enough to pinpoint a ...
Bower, G. C., Burke-Spolaor, S., Butler, B. J., Demorest, P., Halle, A., Khudikyan, S., Law, C. J., Lazio, T. J. W., Pokorny, M., Robnett, J., Rupen, M.   +10 more
core   +1 more source