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Meteor Shower - Crossref

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Last Updated: 13 April 2022

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The mass distribution of comets and meteoroid streams and the shower/sporadic ratio in the incident visual meteoroid flux

Summary of the large dust particles that comets release as they decay and create meteoroid streams. If the Earth passes near the center of a meteor stream, a shower of meteors is released in the atmosphere, and the severity of this shower can be determined by the maximum zenithal hour rate of the meteors that are observed. Comets and meteoroid streams are expected to have similar mass distribution indices, according to all comets, as appears to be reasonable. The sporadic meteor flux and the brightness of the zodiacal cloud are therefore expected to change by around 30-40% over time periods of 103-105 years ago.

Source link: https://doi.org/10.1093/mnras/245.2.198


Is 2021 PH27 an active asteroid with a meteor shower detectable on Venus?

2021 PH27, as Phaethon, cannot be denied, as Phaethon. 2021 PH27 may be the equivalent of Phaethon for the Earth and the progenitor body of a Venusian meteor shower, with a minimum orbit intersection distance of 0. 014660 0. 000034 au. On the days around 2023, when Venus will fly at the minimum distance from the nominal orbit of 2021 PH27, there will be a good opportunity to observe the potential fireballs in Venus' atmosphere on the days around 2023-June 7, giving you a good chance to observe the real fireballs in Venus' atmosphere. The asteroid will also be at the maximum Sun elongation of about 52 _. ^∘ 3 and at the aphelion of its orbit on March 28, the most favourable configuration to characterize it from a physical perspective from photometric, polarimetric, and spectroscopic observations.

Source link: https://doi.org/10.1093/mnrasl/slac004


Meteor Shower Scale Prediction Using Random Forest Classification

We have been able to use big data to analyze and predict the severity of meteor showers, so as to minimize the possibility of meteor objects striking spacecraft and provide a strong guarantee of aerospace defense. The Random Forest Classification, a sort of machine learning algorithm, is used to analyze meteor showers that once visited the Earth to study meteorological cycles and estimate the number of meteor showers that will reach the Earth.

Source link: https://doi.org/10.1088/1742-6596/1486/5/052007


Surfaces of (Nearly) Dormant Comets and the Recent History of the Quadrantid Meteor Shower

The parent of the Quadrantid meteor shower is the inactive solar system's small body 2003 EH 1. The bright comet C/1490 Y1's bright comet has likely only gone dormant in the past few decades, and it could be attributed to the brilliant comet C/1490 Y1. EH 1 has received comparatively little information about its surface characteristics compared to other best-studied inactive meteor shower parent Phaethon, Phaethon. Both red slopes in C and D types are red, consistent with recent photometric results, but HR 30 has a classic comet nucleus D-type slope, with blue slopes consistent with C taxonomic types.

Source link: https://doi.org/10.3847/psj/abd403


Search for possible connections of the h-Virginids meteor shower with near-Earth asteroids

Abstract Asteroids and Comets are the oldest known objects in the Solar System and contain the primordial matter that existed at the time of its creation. One can analyze those small celestial bodies in the early stages and conditions of the Solar System's formation by studying those small celestial bodies. The study of meteor showers' genetic interactions with parent bodies can be used to establish the theory of evolutionary processes that occurred at the time of the solar system's establishment. In this work, we have investigated the h-Virginids' tiny meteor shower with Apollo's near-Earth asteroids. Meteoroid Orbit Database v2. 0 and the European meteor network EDMOND catalogues are among the observatory base's that are in the public domain.

Source link: https://doi.org/10.1088/1742-6596/2103/1/012037


Observation of the A Carinid Meteor Shower 2020 Unexpected Outburst

Abstract We present our findings of the sudden eruption of the A Carinid meteor shower that was captured with the Southern Argentina Agile MEteor Radar Orbital System near the south toroidal sporadic area. We estimated a peak 24 hr average flux of 0. 029 meteoroids km2 hr 1. 01 to a maximum of 1. 9 %, which is similar to other established showers with similar mass indices. We assume a mass index value of s = 2. 0. By analyzing the peak fluxes for other common mass index values, we find that the outburst likely never reached a maximum ZHR of 44, well below those that occur in other large showers. In the known object catalogs, using the D criterion did not disclose a parent object associated with this shower.

Source link: https://doi.org/10.3847/psj/abe9af


Search for pairs and groups in the 2006 Geminid meteor shower

For a long time, the existence of pairs and groups of meteors during meteor showers has been a mystery. The 2006 Geminid meteor shower, one of the country's most popular annual showers, is used for research of such events. The paper is designed to determine whether the observed pairs of Geminid meteors are real events or cases of random chance. Using a double-station video analysis, meteor trajectories of the observed meteors, photometric masses, and both time and spatial distances of meteoroids in the atmosphere were determined. Random pairings were determined using Monte Carlo's Monte Carlo simulation for the determination of random pairing chances. Among the 2006 Geminids, there was a larger than anticipated number of candidates for pairs than was expected. Candidates' geometrical positions of candidate pairs also did not support the presence of real couples and groups.

Source link: https://doi.org/10.1051/0004-6361/202141809


Meteor shower radiant dispersions in Global Meteor Network data

Meteor showers occur when meteoroids originating from a common source intersect the Earth. Considering the effect of the Earth's gravity on the stream, this dispersion of the stream's flux can be particularly significant, considering gravitational focusing's limitations. The median offset of individual meteors from the shower radiant ranges from 0. 32 for the eta Aquariids to 1. 41 for the Southern Taurids is found in our study.

Source link: https://doi.org/10.1093/mnras/stab2557

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions