Results 101 to 110 of about 14,650 (219)

A Search for Meteoroid Streams and Their Sources in the Near-Sun Zodiacal Dust Cloud

open access: yesThe Astrophysical Journal
The structure and dynamics of the zodiacal cloud close to the Sun may be significantly influenced by the interaction between a background quasihomogeneous zodiacal cloud and discrete meteoroid streams associated with small bodies like comets and ...
David M. Malaspina   +4 more
doaj   +1 more source

Cometary dust composition [PDF]

open access: yes
The earth based measurements and in situ sampling of Comet Halley have provided new data about the chemical composition of cometary grains. Recent progress in laboratory studies of interplanetary dust particles (IDPs) complement the comet data, allowing ...
Gehrz, R. D., Hanner, M. S.
core   +1 more source

Carbon petrology in cometary dust [PDF]

open access: yes
Chondritic porous (CP) interplanetary dust particles (IDP's) are collected in the Earth's stratosphere. There exists an extensive database on major and minor element chemistry, stable isotopes, noble gas abundances and mineralogy of many CP IDP's, as ...
Rietmeijer, Frans J. M.
core   +1 more source

The Spheroidal Analog Method for Modeling Irregular Porous Aggregates

open access: yesThe Astrophysical Journal
It is shown that the optical properties of an irregular porous grain with effective radius a _eff  ≲ 3 λ (where λ is the wavelength) can be well approximated by a “spheroidal analog”: a spheroid with appropriate axial ratio and size, with a dielectric ...
B. T. Draine
doaj   +1 more source

Reexamination of data from the asteroid/meteoroid detector [PDF]

open access: yes
A reexamination of the results of the Pioneer 10 and 11 Asteroid Meteoroid Detector, or Sisyphus, was carried out in the light of a recently derived theory characterizing interplanetary matter and the Zodiacal Light (ZL).
Dubin, Maurice, Soberman, Robert K.
core   +1 more source

Reactive Molecular Dynamics Simulations of Micrometeoroid Bombardment for Space Weathering of Asteroid (162173) Ryugu

open access: yesThe Astrophysical Journal
Remote sensing observations by Hayabusa2 and laboratory measurements have revealed that the phyllosilicates on asteroid (162173) Ryugu are dehydrated/dehydroxylated due to space weathering.
Daigo Shoji
doaj   +1 more source

Metallic atoms and ions in comets: Comet Halley 1986 3 [PDF]

open access: yes
The origin of metallic atoms and ions in the cometary comae is investigated theoretically. Two effects are revealed in the comas of bright comets: (1) the Na anomalous type effect is possible within the gas-dust jets of comet P/Halley 1986 3 due to ...
Ibadov, S.
core   +1 more source

Cosmic dust in the atmosphere and in the interplanetary space at 1 AU today and in the early solar system [PDF]

open access: yes
A description of techniques used in recent experiments to detect and analyze cosmic dust and micrometeorites is given and the results both from the study of lunar crater statistics and from in situ measurements are reviewed. The results from lunar crater
Fechtig, H.
core   +1 more source

Volatiles in interplanetary dust particles and aerogels [PDF]

open access: yes
Volatiles measured in 25 interplanetary dust particles (IDPs) are a mixture of both indigenous materials and contaminants associated with the collection and processing of the ODPs prior to analysis. Most IDPs have been collected in the stratosphere using
Gibson, E. K., Jr., Harmetz, C. P.
core   +1 more source

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