Results 11 to 20 of about 159,298 (239)
Turbulent dissipation, CH+ abundance, H2 line luminosities, and polarization in the cold neutral medium [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT In the cold neutral medium, high out-of-equilibrium temperatures are created by intermittent dissipation processes, including shocks, viscous heating, and ambipolar diffusion. The high-temperature excursions are thought to explain the enhanced abundance of CH+ observed along diffuse molecular sightlines.
Eric R Moseley +3 more
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A multiwavelength investigation of the temperature of the cold neutral medium [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2006 Abstract We present measurements of the H i spin temperatures (Ts) of the cold neutral medium (CNM) towards radio sources that are closely aligned with stars for which published H2 ortho-para temperatures (T01) are available from ultraviolet (UV) observations. Our sample consists of 18 radio sources close to 16 nearby stars.
Roy, Nirupam +2 more
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The influence of magnetic field on the cold neutral medium mass fraction and its alignment with density structures [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 Fil: Villagran Azuara, Marco Adrian. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Ciudad Universitaria. Instituto de Astronomia y Fisica del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales.
M A Villagran, A Gazol
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Necessary conditions for the formation of filaments and star clusters in the cold neutral medium
Monthly Notices of the Royal Astronomical SocietyABSTRACT Star formation takes place in filamentary molecular clouds which arise by physical processes that take place in the cold neutral medium (CNM). We address the necessary conditions for this diffuse (n ≈ 30 cm−3), cold (T ≈ 60 K), magnetized gas undergoing shock waves, and supersonic turbulence, to produce filamentary structures ...
Rachel Pillsworth, Ralph E Pudritz
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H i column density statistics of the cold neutral medium from absorption studies [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 Abstract Physical properties of the tiny scale structures in the cold neutral medium (CNM) of galaxies is a long-standing puzzle. Only a few lines of sights in our Galaxy have been studies with mixed results on the scale-invariant properties of such structures.
Pavan Kumar Vishwakarma, Prasun Dutta
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The Astrophysical Journal, 2022 Abstract Using new large-area maps of the cold neutral medium (CNM) fraction, f CNM, we investigate the relationship between the CNM, the abundance of polycyclic aromatic hydrocarbons (PAHs), and the anomalous microwave emission (AME).
Brandon S. Hensley +2 more
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Extracting the Cold Neutral Medium from H i Emission with Deep Learning: Implications for Galactic Foregrounds at High Latitude [PDF]
The Astrophysical Journal, 2020 Abstract Resolving the phase structure of neutral hydrogen (H i) is crucial for understanding the life cycle of the interstellar medium (ISM). However, accurate measurements of H i temperature and density are limited by the availability of background continuum sources for measuring H i absorption.
Claire E. Murray +2 more
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Metals, 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
Environmental 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
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The Structure of the Cold Neutral Interstellar Medium on 10–100 AU Scales [PDF]
The Astronomical Journal, 2001 We have used the Very Long Baseline Array (VLBA) and the Very Large Array (VLA) to image Galactic neutral hydrogen in absorption toward four compact extragalactic radio sources with a resolution of 10 mas. Previous VLBA data published by Faison et al. have shown the existence of prominent structures in the direction of the extragalactic source 3C 138 ...
M. D. Faison, W. M. Goss
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