Results 51 to 60 of about 72,029 (306)

Measuring the ionisation fraction in a jet from a massive protostar

open access: yesNature Communications, 2019
The ionisation fraction of protostellar jets is key to establish their true energetics. Here, the authors determine it in a jet from a high-mass young stellar object, using multi-wavelengths observations, confirming that the ionising mechanism giving ...
R. Fedriani   +9 more
doaj   +1 more source

Propagation of Cosmic Rays: Nuclear Physics in Cosmic-Ray Studies [PDF]

open access: yesAIP Conference Proceedings, 2005
The nuclei fraction in cosmic rays (CR) far exceeds the fraction of other CR species, such as antiprotons, electrons, and positrons. Thus the majority of information obtained from CR studies is based on interpretation of isotopic abundances using CR propagation models where the nuclear data and isotopic production cross sections in p- and alpha-induced
Moskalenko, I. V.   +2 more
openaire   +2 more sources

The “SPectrogram Analysis and Cataloguing Environment” (SPACE) labelling tool

open access: yesFrontiers in Astronomy and Space Sciences, 2022
The SPectrogram Analysis and Cataloguing Environment (SPACE) tool is an interactive python tool designed to label radio emission features of interest in a time-frequency map (called “dynamic spectrum”).
Corentin Louis   +9 more
doaj   +1 more source

Astrophysical origin of high-energy cosmic neutrinos

open access: yesEPJ Web of Conferences, 2015
The origin of high-energy cosmic neutrinos is a new interesting mystery in astroparticle physics. The present data suggest interesting connection to cosmic-ray and/or gamma-ray sources.
Murase Kohta
doaj   +1 more source

A Practical Noise2Noise Denoising Pipeline for High‐Throughput Raman Spectroscopy

open access: yesAdvanced Engineering Materials, EarlyView.
A lightweight and reproducible denoising pipeline for high‐throughput Raman spectroscopy is introduced, based on a 1D convolutional autoencoder trained with a Noise2Noise strategy. Using only repeated short‐exposure acquisitions, the method suppresses stochastic noise without reference spectra, enabling reliable spectral reconstruction while preserving
David Martin‐Calle   +5 more
wiley   +1 more source

The CMS Tracker operation and performance at the Magnet Test and Cosmic Challenge [PDF]

open access: yes, 2008
During summer 2006 a fraction of the CMS silicon strip tracker was operated in a comprehensive slice test called the Magnet Test and Cosmic Challenge (MTCC).
Broccolo, B.   +999 more
core   +1 more source

Sun-to-Mud observations of the May and October storms of 2024: impacts on Ireland’s Space Weather

open access: yesJournal of Space Weather and Space Climate
Near the peak of Solar Cycle 25 in 2024, Earth was impacted by two major solar eruptive events which triggered dramatic geomagnetic storm activity. In May 2024, multiple solar eruptive events generated the largest geomagnetic storm since the early 2000s;
Fogg Alexandra Ruth   +9 more
doaj   +1 more source

Particle physics and the cosmic microwave background [PDF]

open access: yesPhysics Today, 2015
Temperature and polarization variations across the microwavesky include the fingerprints of quantum fluctuations in the early universe.They may soon reveal physics at unprecedented energy scales.
Carlstrom, John E.   +2 more
openaire   +2 more sources

Mechanically Mutable Matrices: A Hierarchical Investigation of Decellularized Sea Cucumber Collagen as an Adaptable Scaffold Material

open access: yesAdvanced Functional Materials, EarlyView.
Sea cucumber mutable collagenous tissue (MCT) is a remarkable collagen‐based material which can rapidly undergo large changes in stiffness through transiently bound effector proteins. Here, we investigate the hierarchical structure and mechanical response of MCT from Cucumaria frondosa across length scales with a wide range of methods, also exploring ...
Nathalie R. H. Singh   +7 more
wiley   +1 more source

Solvent‐Guided Chiral Assemblies and Chemical Doping of OEG‐Functionalized Conjugated Polymers

open access: yesAdvanced Materials, EarlyView.
Solvent‐dependent aggregation pathways dictate whether conjugated polymers form chiral lyotropic liquid‐crystalline assemblies or achiral packed aggregates. Mapping solvent‐controlled β₁ and β2 states reveals that weaker backbone association favors β₁ aggregates and reorganizable twisted mesophases, whereas stronger backbone association favors β2 ...
Sanghyun Jeon   +10 more
wiley   +1 more source

Home - About - Disclaimer - Privacy