Results 101 to 110 of about 7,591 (251)

Near-real-time 3D Reconstruction of the Solar Coronal Parameters Based on the Magnetohydrodynamic Algorithm outside a Sphere Using Deep Learning

The Astrophysical Journal Supplement Series
For the first time, we generate solar coronal parameters (density, magnetic field, radial velocity, and temperature) on a near-real-time basis by deep learning.
Sumiaya Rahman, Hyun-Jin Jeong, Ashraf Siddique, Yong-Jae Moon, Bendict Lawrance   +4 more
doaj   +1 more source

Astronomical Image Compression Techniques Based on ACC and KLT Coder

Acta Polytechnica, 2011
This paper deals with a compression of image data in applications in astronomy. Astronomical images have typical specific properties — high grayscale bit depth, size, noise occurrence and special processing algorithms.
J. Schindler, P. Páta, M. Klíma, K. Fliegel   +3 more
doaj  

Contour Analysis Tool: An Interactive Tool for Background and Morphology Analysis

The Astrophysical Journal
We introduce the Contour Analysis Tool (CAT), a Python toolkit aimed at identifying and analyzing structural elements in density maps. CAT employs various contouring techniques, including the lowest-closed contour, linear and logarithmic Otsu ...
Mark A. Hutchison, Christine M. Koepferl
doaj   +1 more source

Mechanistic Insights Into Cellulose Dissolution in Solvents for Advanced Industrial Applications: A Systematic and Bibliometric Review

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Cellulose dissolution is important for various industries, including textiles, bioplastics, foods and pharmaceuticals, yet achieving efficient dissolution remains challenging. Deep eutectic solvents (DES) have emerged as promising alternatives to traditional solvents due to their low toxicity, biodegradability and sustainability.
Chigozie Charity Okwuwa, Fatmawati Adam, Michael E. Ries, Nor Hanuni Ramli, Samuel Olugbenga Olunusi   +4 more
wiley   +1 more source

Use the 4S (Signal-Safe Speckle Subtraction): Explainable Machine Learning Reveals the Giant Exoplanet AF Lep b in High-contrast Imaging Data from 2011

The Astronomical Journal
The main challenge of exoplanet high-contrast imaging (HCI) is to separate the signal of exoplanets from their host stars, which are many orders of magnitude brighter.
Markus J. Bonse, Timothy D. Gebhard, Felix A. Dannert, Olivier Absil, Faustine Cantalloube, Valentin Christiaens, Gabriele Cugno, Emily O. Garvin, Jean Hayoz, Markus Kasper, Elisabeth Matthews, Bernhard Schölkopf, Sascha P. Quanz   +12 more
doaj   +1 more source

Universal Entanglement and an Information‐Complete Quantum Theory

Advanced Physics Research, EarlyView.
This Perspective summarize an informationcomplete quantum theory which describes a fully quantum world without any classical systems and concepts. Here spacetime/gravity, having to be a physical quantum system, universally entangles matter (matter fermions and their gauge fields) as an indivisible trinity, and encodes information‐complete physical ...
Zeng‐Bing Chen
wiley   +1 more source

The THESEUS Space Mission and the Infrared Telescope Calibration Unit

Astronomische Nachrichten, EarlyView.
ABSTRACT The Transient High‐Energy Sky and Early Universe Surveyor (THESEUS) is an ESA M7 mission concept currently in Phase A, designed to exploit gamma‐ray bursts to probe the early Universe while advancing multi‐messenger and time‐domain astrophysics. To achieve its ambitious goals, THESEUS will combine wide‐band x‐ray and gamma‐ray monitors with an
András Péter Joó, Rebeka Gyöngyi Kiss, Lorenzo Amati, Bendegúz Koncz, Örs Detre, Gyula Zilizi, Zsolt Bagoly, István I. Rácz, Sándor Pintér, L. Viktor Tóth   +9 more
wiley   +1 more source

Validitas Metode Image Processing DOME Astronomi CASA dalam Rukyatul Hilal

, 2018
Using of telescopes for the observing crescent often finds difficulties and failures. The combination of telescopes, digital cameras, and image processing methods through computerized processes is a good solution in the success of capturing the image of the new moon.
openaire   +1 more source

Repeating Nuclear Transients From Repeating Partial Tidal Disruption Events

Astronomische Nachrichten, EarlyView.
ABSTRACT Extragalactic nuclear transients that exhibit repeating outbursts can be modeled as the repeated dynamical interaction between bound stars and supermassive black holes (SMBHs). A subset of these transients, with recurrence timescales of months‐to‐years, have been explained as accretion flares from the repeated tidal stripping of a star by an ...
Ananya Bandopadhyay, Eric R. Coughlin, Julia Fancher, C. J. Nixon, Dheeraj R. Pasham   +4 more
wiley   +1 more source

Reduction and Solid Electrolyte Interphase Formation Mechanism of Prop‐1‐ene‐1,3‐Sultone

Batteries &Supercaps, EarlyView.
Layer‐forming additives stabilize Li‐ion cells, yet their mechanisms remain unclear. Using operando attenuated total reflection fourier‐transform infrared spectroscopy, online electrochemical mass spectrometry, electrochemical quartz crystal microbalance with dissipation monitoring, electrochemical impedance spectroscopy, and ex situ X‐ray ...
Tim Melin, Laura King, Maria Hahlin, Erik J. Berg   +3 more
wiley   +1 more source