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of 107
pro vyhledávání: '"Moorhead, A. V."'
Although the risk posed to spacecraft due to meteoroid impacts is dominated by sporadic meteoroids, meteor showers can raise this risk for short periods of time. NASA's Meteoroid Environment Office issues meteor shower forecasts that describe these p
Externí odkaz:
http://arxiv.org/abs/2408.04612
Publikováno v:
Advances in Space Research 72:10 (2023) 4582-4595
NASA's Meteoroid Engineering Model (MEM) is designed to provide aerospace engineers with an accurate description of potentially hazardous meteoroids. It accepts a spacecraft trajectory as input and its output files describe the flux, speed, direction
Externí odkaz:
http://arxiv.org/abs/2405.08685
The rate at which meteors pass through Earth's atmosphere has been measured or estimated many times over; existing flux measurements span at least 12 astronomical magnitudes, or roughly five decades in mass. Unfortunately, the common practice of scal
Externí odkaz:
http://arxiv.org/abs/2405.07874
Grain-grain collisions shape the 3-dimensional size and velocity distribution of the inner Zodiacal Cloud and the impact rates of dust on inner planets, yet they remain the least understood sink of zodiacal dust grains. For the first time, we combine
Externí odkaz:
http://arxiv.org/abs/2401.13776
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 508(1), 326-339 (2021)
Meteor showers occur when streams of meteoroids originating from a common source intersect the Earth. There will be small dissimilarities between the direction of motion of different meteoroids within a stream, and these small differences will act to
Externí odkaz:
http://arxiv.org/abs/2205.15423
We report results of a four-year survey using Electron Multiplied Charged Coupled Device (EMCCD) cameras recording 34761 two-station video meteor events complete to a limiting magnitude of +6. The survey goal was to characterize probable iron meteoro
Externí odkaz:
http://arxiv.org/abs/2109.10265
Autor:
Moorhead, Althea V.
Burns et al. (1979) use the parameter beta to describe the ratio of radiation pressure to gravity experienced by a small particle in the solar system. The central potential that these particles experience is effectively reduced by a factor of (1 - be
Externí odkaz:
http://arxiv.org/abs/2006.14039
The number density and flux of a meteoroid stream is enhanced near a massive body due to the phenomenon known as gravitational focusing. The greatest enhancement occurs directly opposite the massive body from the stream radiant: as an observer approa
Externí odkaz:
http://arxiv.org/abs/2003.05458
Publikováno v:
In Advances in Space Research 15 November 2023 72(10):4582-4595
Autor:
Moorhead, Althea V.
Orbital dissimilarity, or D, criteria are often used to select members of a meteor shower from a set of meteor observations. These criteria provide a quantitative description of the degree to which two orbits differ; if the degree of dissimilarity be
Externí odkaz:
http://arxiv.org/abs/1910.10729