Results 1 to 10 of about 3,566,597 (273)

Probing the Cold Neutral Medium through H I Emission Morphology with the Scattering Transform [PDF]

open access: yesThe Astrophysical Journal, 2023
Neutral hydrogen (H I ) emission exhibits complex morphology that encodes rich information about the physics of the interstellar medium. We apply the scattering transform (ST) to characterize the H I emission structure via a set of compact and ...
Minjie Lei, S. E. Clark
doaj   +5 more sources

JWST imaging of the Pleiades: Anisotropy of turbulence in the cold neutral medium [PDF]

open access: yesAstronomy & Astrophysics
Interstellar medium studies rely on magnetohydrodynamic turbulence as a framework for interpretation. In this context, the statistical characterization of interstellar observations is of prime importance.
Vigoureux G.   +16 more
doaj   +3 more sources

Cold Ironing Galvanic Corrosion Issues with Regard to a Shore-to-Ship Medium Voltage Connection

open access: yesEnergies, 2020
Cold ironing refers to the usage of less polluting power supply sources to deliver electricity to the moored ship. Such a shore-to-ship system is used when the ship is at a port so the auxiliary combustion engines may be turned off.
Maciej Kozak, Jarosław Chmiel
doaj   +2 more sources

Mapping a Lower Limit on the Mass Fraction of the Cold Neutral Medium Using Fourier-transformed H i 21 cm Emission Line Spectra: Application to the DRAO Deep Field from DHIGLS and the HI4PI Survey

open access: yesThe Astrophysical Journal
We develop a new method for spatially mapping a lower limit on the mass fraction of the cold neutral medium by analyzing the amplitude structure of ${\hat{T}}_{b}({k}_{v})$ , the Fourier transform of T _b ( v ), the spectrum of the brightness temperature
Antoine Marchal   +6 more
doaj   +6 more sources

OBSERVATIONS OF DECAMETER CARBON RADIO RECOMBINATION LINES IN SEVERAL GALACTIC DIRECTIONS. Part 1. EXPERIMENTAL STUDY [PDF]

open access: yesRadio Physics and Radio Astronomy, 2023
Subject and Purpose. Since decameter carbon radio recombination lines (RRLs) were detected for the first time more than forty years ago, they have significantly extended our knowledge of the physics, kinematics and chemistry of the cold rarefied ...
Y. V. Vasylkivskyi   +2 more
doaj   +1 more source

Metallicity Dependence of Molecular Cloud Hierarchical Structure at Early Evolutionary Stages

open access: yesThe Astrophysical Journal, 2023
The formation of molecular clouds out of H i gas is the first step toward star formation. Its metallicity dependence plays a key role in determining star formation throughout cosmic history.
Masato I. N. Kobayashi   +5 more
doaj   +1 more source

Microstructure, Mechanical Properties and Corrosion Behavior of the Aluminum Alloy Components Repaired by Cold Spray with Al-Based Powders

open access: yesMetals, 2021
Aluminum alloy components of high-speed trains have a great risk of being corroded by various corrosive medium due to extremely complex atmospheric environments. This will bring out huge losses and reduce the safety and stability of trains.
Zhiyi Zhang   +6 more
doaj   +1 more source

Revealing the role of microalgae-bacteria niche for boosting wastewater treatment and energy reclamation in response to temperature

open access: yesEnvironmental Science and Ecotechnology, 2023
Conventional biological treatment usually cannot achieve the same high water quality as advanced treatment when conducted under varied temperatures. Here, satisfactory wastewater treatment efficiency was observed in a microalgae-bacteria consortia (MBC ...
Chaofan Zhang   +6 more
doaj   +1 more source

Phase-dependent Magnetic Coherence in the Turbulent Interstellar Medium

open access: yesThe Astrophysical Journal
Magnetic fields permeate the multiphase interstellar medium (ISM), yet their phase-dependent structure remains poorly constrained by observations. Dust polarization and H i emission together offer complementary probes of the plane-of-sky magnetic field ...
Iryna S. Butsky   +4 more
doaj   +1 more source

Neutral Gas Phase Distribution from H I Morphology: Phase Separation with Scattering Spectra and Variational Autoencoders

open access: yesThe Astrophysical Journal
Unraveling the multiphase structure of the diffuse interstellar medium as traced by neutral hydrogen (H i ) is essential to understanding the lifecycle of the Milky Way. However, H i phase separation is a challenging and underconstrained problem.
Minjie Lei   +6 more
doaj   +1 more source

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