Results 81 to 90 of about 148,253 (282)

Real-Time Dedispersion for Fast Radio Transient Surveys, using Auto Tuning on Many-Core Accelerators

, 2016
Dedispersion, the removal of deleterious smearing of impulsive signals by the interstellar matter, is one of the most intensive processing steps in any radio survey for pulsars and fast transients.
Bal, Henri E., Sclocco, Alessio, van Leeuwen, Joeri, van Nieuwpoort, Rob V.   +3 more
core   +2 more sources

2D Copper MOF Membranes with Precise Pores for Ionic Memory

Advanced Science, EarlyView.
 . ABSTRACT Biological ion channels play a critical role in the complex physiological processes of living organisms. Inspired by these natural systems, we demonstrate the fabrication of ultrathin 2D copper‐based metal‐organic framework (CuMOF) films and their application to mimic key functionalities of biological membranes. Using a liquid–air interface
Hiran Jyothilal, Raj Kumar Gogoi, Yuchen Liu, Vikas Sharma, Solleti Goutham, Michael Hutton, Rachel C. Kilbride, Daniel T.W. Toolan, Ashok Keerthi, Boya Radha   +9 more
wiley   +1 more source

Flares from coalescing black holes in the centimeter-wavelength transient sky [PDF]

, 2018
Radio observations have resulted in some of the most fundamental and exciting discoveries in time-domain astronomy. Here I demonstrate the potential for the Next Generation Very Large Array (ngVLA) to localize prompt centimeter-wavelength counterparts to
Ravi, Vikram
core   +1 more source

A new concept for the combination of optical interferometers and high-resolution spectrographs

, 2009
The combination of high spatial and spectral resolution in optical astronomy enables new observational approaches to many open problems in stellar and circumstellar astrophysics.
A Chelli, A Domiciano de Souza, A Kolmogorov, A Labeyrie, A Meilland, A Quirrenbach, A Quirrenbach, A Quirrenbach, A Quirrenbach, Andreas Quirrenbach, C Tycner, CN Sabbey, D Shulyak, DB McLaughlin, DF Buscher, DF Gray, DL Fried, DNC Lin, F Martin, F Roddier, F Vakili, G Hébrard, G Weigelt, JB Rice, JCB Papaloizou, JD Monnier, JF Donati, JH Shi, JN Winn, JW Goodman, M Marengo, M Nagasawa, M Shao, M Wittkowski, MM Colavita, MS Cunha, N Nardetto, O Kochukhov, PE Ciddor, PG Tuthill, R Tubbs, RA Rossiter, Ramon Vink, RF Griffin, RJ Mathar, RJ Noll, RL Lucke, Robert N. Tubbs, S Albrecht, S Albrecht, S Frink, S Jankov, Simon Albrecht, T Fusco, T Tsuji, VI Tatarski, WJ Tango, Y Wu   +57 more
core   +1 more source

AMPEL: A framework for reproducible time-domain astronomy

, 2022
Reproducibility, a core principle of science, is close to impossible to achieve in its strict sense in time-domain astronomy - we cannot redo an observation of a transient event once it is gone. Related features such as provenance and analysis reproducibility is further challenged by fractured software development, heterogeneous data sources and an ...
openaire   +1 more source

A key to the treasure chest of time-domain astronomy

, 2022
Abstract Time-domain astronomy has emerged as one of the most promising fields in astronomy. Time-frequency analysis methods like Fourier and wavelet transforms are widely used in astronomy but have profound limitations in analysing nonlinear or non-stationary data, which are dominant in natural systems.
Shuping Yan, Li Ji, Siming Liu, Ping Zhang, Min Long, Lei Lu   +5 more
openaire   +1 more source

Direct Photocurrent Detection of Optical Vortex Based on the Orbital Photo Galvanic Effect: Progress, Challenge, and Perspective

Advanced Science, EarlyView.
Direct orbital angular momentum (OAM) detection through the orbital photogalvanic effect offers a scalable route for integrated optoelectronics. This perspective evaluates symmetry‐driven material selection and demonstrates how electrode matrices enable the resolution of complex, mixed OAM modes.
Jinluo Cheng, Dehong Yang, Weiming Wang, Chang Xu, Zipu Fan, Dong Sun   +5 more
wiley   +1 more source

Ultradeep ATCA Imaging of 47 Tucanae Reveals a Central Compact Radio Source

The Astrophysical Journal
We present the results of an ultradeep radio continuum survey, containing ∼480 hr of observations, of the Galactic globular cluster 47 Tucanae with the Australia Telescope Compact Array.
Alessandro Paduano, Arash Bahramian, James C. A. Miller-Jones, Adela Kawka, Tim J. Galvin, Liliana Rivera Sandoval, Sebastian Kamann, Jay Strader, Laura Chomiuk, Craig O. Heinke, Thomas J. Maccarone, Stefan Dreizler   +11 more
doaj   +1 more source

Lifshitz Transition in Correlated Topological Semimetals

Advanced Science, EarlyView.
Theoretical calculations reveal that in YPtBi and GdPtBi, strong electronic correlations shift topological Dirac nodes away from the Fermi level by forming large hole pockets. This effect is sensitive to temperature and arises from interactions among 4d or 4f electrons, offering insights into Fermi surface engineering in quantum materials.
Byungkyun Kang, Myoung‐Hwan Kim, Chul Hong Park, Anderson Janotti, Eunja Kim   +4 more
wiley   +1 more source

A recurrent neural network for classification of unevenly sampled variable stars

, 2017
Astronomical surveys of celestial sources produce streams of noisy time series measuring flux versus time ("light curves"). Unlike in many other physical domains, however, large (and source-specific) temporal gaps in data arise naturally due to ...
Bloom, Joshua S., Naul, Brett, Pérez, Fernando, van der Walt, Stéfan   +3 more
core   +1 more source