Results 11 to 20 of about 105,694 (241)
Cosmic dust evolution: The challenges for NIKA2 [PDF]
EPJ Web of Conferences, 2022 I summarize a recent study aimed at constraining dust evolution timescales in nearby galaxies. We were able to quantify the effciency of dust condensation in SN II ejecta, grain growth in the ISM and dust destruction by SN II blast waves.
Galliano Frédéric
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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
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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
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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
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Journal of Materials Research and Technology, 2020 Mesoscopic superconducting particles can be used as a model material for the cognition of the properties of a possible superconducting cosmic dust. In order to acquire the desired fraction between 1–10 µm, the method of the grain size separation based on
Michal Lojka +7 more
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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
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Can inhomogeneties accelerate the cosmic volume expansion? [PDF]
, 2006 If expanding and contracting regions coexist in the universe, the speed of the cosmic volume expansion can be accelerated. We construct simple inhomogeneous dust-filled universe models in which the speed of the cosmic volume expansion is accelerated for ...
Kai, Tomohiro +4 more
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The Astrophysical Journal, 2023 We study the morphological properties of mid-infrared selected galaxies at 1.0 < z < 1.7 in the SMACS J0723.3-7327 cluster field to investigate the mechanisms of galaxy mass assembly and structural formation at cosmic noon.
Zhaoran Liu +2 more
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STUDY ON THE EXTRATERRESTRIAL MATERIAL AT ANTARCTICA (I)
Antarctic Record, 1968 The study of the extraterrestrial material collected in Antarctica is reported. The extrateirestnal material comprises cosmic dust, tektite, and meteorite.
Makoto SHIMA, Hideo YABUKI
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Cosmic rays and space weather: effects on global climate change [PDF]
Annales Geophysicae, 2012 We consider possible effects of cosmic rays and some other space factors on the Earth's climate change. It is well known that the system of internal and external factors formatting the climate is very unstable; decreasing planetary temperature leads ...
L. I. Dorman, L. I. Dorman
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