Results 31 to 40 of about 486,911 (258)
Planetary and Space Science, 2015 This is an editorial to the special issue on Cosmic Dust VII.
Hidehiro Kaneda +5 more
openaire +3 more sources
The impact of astrophysical dust grains on the confinement of cosmic rays [PDF]
Monthly notices of the Royal Astronomical Society, 2020 We argue that charged dust grains could significantly impact the confinement and transport of galactic cosmic rays. For sub-GeV to ∼103 GeV cosmic rays, small-scale parallel Alfvén waves, which isotropize cosmic rays through gyro-resonant interactions,
J. Squire +3 more
semanticscholar +1 more source
AGB Winds with Gas-Dust Drift in Stellar Evolution Codes
Universe, 2021 A significant fraction of new metals produced in stars enter the interstellar medium in the form of dust grains. Including dust and wind formation in stellar evolution models of late-stage low- and intermediate-mass stars provides a way to quantify their
Lars Mattsson, Christer Sandin
doaj +1 more source
Cosmic Dust in the 21st Century [PDF]
Astrophysics and Space Science, 1999 To appear in "Toward a New Millennium in Galaxy Morphology", Edited by David L.
Chuanjian Shen, J. Mayo Greenberg
openaire +3 more sources
Evidence of Surface Catalytic Effect on Cosmic Dust Grain Analogs: The Ammonia and Carbon Dioxide Surface Reaction [PDF]
Astrophysical Journal, 2019 Surface chemistry on cosmic dust grains plays an important role in the formation of molecules at low temperatures in the interstellar and circumstellar environments.
A. Potapov +3 more
semanticscholar +1 more source
Odessa Astronomical Publications, 2020 Cosmic-ray induced γ-ray emission in active galactic nuclei (AGN) has been examined in this study for the first time. Cross-sections for the formation of γ-quanta in such cosmic-ray collisions were selected in the 1-150 MeV energy range.
D. N. Doikov
doaj +1 more source
Astrophysical Journal Supplement Series, 2020 We present laboratory measurements of the phase functions and degree of linear polarization (DLP) curves of a selection of millimeter-sized cosmic dust analog particles.
O. Muñoz +24 more
semanticscholar +1 more source
Cosmic dust fertilization of glacial prebiotic chemistry on early Earth [PDF]
Nature AstronomyEarth’s surface is deficient in available forms of many elements considered limiting for prebiotic chemistry. In contrast, many extraterrestrial rocky objects are rich in these same elements.
C. Walton +7 more
semanticscholar +1 more source
Supernova Dust Evolution Probed by Deep-sea 60Fe Time History
The Astrophysical Journal, 2023 There is a wealth of data on live, undecayed ^60 Fe ( t _1/2 = 2.6 Myr) in deep-sea deposits, the lunar regolith, cosmic rays, and Antarctic snow, which is interpreted as originating from the recent explosions of at least two near-Earth supernovae.
Adrienne F. Ertel +3 more
doaj +1 more source
Experimentally Derived Luminous Efficiencies for Aluminum and Iron at Meteoric Speeds
Geophysical Research Letters, 2023 Calculating meteoroid masses from photometric observations relies on prior knowledge of the luminous efficiency, a parameter that is not well characterized; reported values vary by several orders of magnitude.
L. K. Tarnecki +4 more
doaj +1 more source