Results 11 to 20 of about 3,872 (213)

Supernova Dust Evolution Probed by Deep-sea 60Fe Time History

open access: yesThe 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

Phase-stable segmentation of BSCCO high-temperature superconductor into micro-, meso-, and nano-size fractions

open access: yesJournal 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
doaj   +1 more source

Experimentally Derived Luminous Efficiencies for Aluminum and Iron at Meteoric Speeds

open access: yesGeophysical 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

A Multiwavelength Investigation of Dust and Stellar Mass Distributions in Galaxies: Insights from High-resolution JWST Imaging

open access: yesThe 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
doaj   +1 more source

STUDY ON THE EXTRATERRESTRIAL MATERIAL AT ANTARCTICA (I)

open access: yesAntarctic 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
doaj   +1 more source

Cosmic rays and space weather: effects on global climate change [PDF]

open access: yesAnnales 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
doaj   +1 more source

STUDY ON THE EXTRATERRESTRIAL MATERIAL IN ANTARCTICA (II) : SEASONAL VARIATION AT SYOWA STATION AND LATITUDE EFFECT ON COSMIC DUST

open access: yesAntarctic Record, 1969
Measurements of cosmic dust as a function of the seasonal variation were carried out by the air filtration method at Syowa Station (from January to October, 1967).
Makoto SHIMA   +2 more
doaj   +1 more source

Interstellar dust within the life cycle of the interstellar medium

open access: yesEPJ Web of Conferences, 2012
Cosmic dust is omnipresent in the Universe. Its presence influences the evolution of the astronomical objects which in turn modify its physical and chemical properties.
Demyk K.
doaj   +1 more source

The Purport of Space Telescopes in Supernova Research

open access: yesUniverse, 2023
The violent stellar explosions known as supernovae have received especially strong attention in both the research community and the general public recently.
József Vinkó   +2 more
doaj   +1 more source

A Multi‐Purpose Heliophysics L4 Mission

open access: yesSpace Weather, 2021
The Earth‐Sun Lagrangian point 4 is a meta‐stable location at 1 AU from the Sun, 60° ahead of Earth's orbit. It has an uninterrupted view of the solar photosphere centered on W60, the Earth's nominal magnetic field connection to the Sun.
A. Posner   +15 more
doaj   +1 more source

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