Eloy Peña-Asensio, Michael Küppers, Josep M. Trigo-Rodríguez, Albert Rimola
{"title":"向火星和地球运送 DART 撞击喷射物:流星观测的机遇","authors":"Eloy Peña-Asensio, Michael Küppers, Josep M. Trigo-Rodríguez, Albert Rimola","doi":"arxiv-2408.02836","DOIUrl":null,"url":null,"abstract":"NASA's DART and ESA's Hera missions offer a unique opportunity to investigate\nthe delivery of impact ejecta to other celestial bodies. We performed ejecta\ndynamical simulations using 3 million particles categorized into three size\npopulations (10 cm, 0.5 cm, and 30 $\\mu$m) and constrained by early post-impact\nLICIACube observations. The main simulation explored ejecta velocities ranging\nfrom 1 to 1,000 m/s, while a secondary simulation focused on faster ejecta with\nvelocities from 1 to 2 km/s. We identified DART ejecta orbits compatible with\nthe delivery of meteor-producing particles to Mars and Earth. Our results\nindicate the possibility of ejecta reaching the Mars Hill sphere in 13 years\nfor launch velocities around 450 m/s, which is within the observed range. Some\nejecta particles launched at 770 m/s could reach Mars's vicinity in 7 years.\nFaster ejecta resulted in a higher flux delivery towards Mars and particles\nimpacting the Earth Hill sphere above 1.5 km/s. The delivery process is\nslightly sensitive to the initial observed cone range and driven by synodic\nperiods. The launch locations for material delivery to Mars were predominantly\nnorthern the DART impact site, while they displayed a southwestern tendency for\nthe Earth-Moon system. Larger particles exhibit a marginally greater likelihood\nof reaching Mars, while smaller particles favor delivery to Earth-Moon,\nalthough this effect is insignificant. To support observational campaigns for\nDART-created meteors, we provide comprehensive information on the encounter\ncharacteristics (orbital elements and radiants) and quantify the orbital\ndecoherence degree of the released meteoroids.","PeriodicalId":501209,"journal":{"name":"arXiv - PHYS - Earth and Planetary Astrophysics","volume":"1 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Delivery of DART Impact Ejecta to Mars and Earth: Opportunity for Meteor Observations\",\"authors\":\"Eloy Peña-Asensio, Michael Küppers, Josep M. Trigo-Rodríguez, Albert Rimola\",\"doi\":\"arxiv-2408.02836\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"NASA's DART and ESA's Hera missions offer a unique opportunity to investigate\\nthe delivery of impact ejecta to other celestial bodies. We performed ejecta\\ndynamical simulations using 3 million particles categorized into three size\\npopulations (10 cm, 0.5 cm, and 30 $\\\\mu$m) and constrained by early post-impact\\nLICIACube observations. The main simulation explored ejecta velocities ranging\\nfrom 1 to 1,000 m/s, while a secondary simulation focused on faster ejecta with\\nvelocities from 1 to 2 km/s. We identified DART ejecta orbits compatible with\\nthe delivery of meteor-producing particles to Mars and Earth. Our results\\nindicate the possibility of ejecta reaching the Mars Hill sphere in 13 years\\nfor launch velocities around 450 m/s, which is within the observed range. Some\\nejecta particles launched at 770 m/s could reach Mars's vicinity in 7 years.\\nFaster ejecta resulted in a higher flux delivery towards Mars and particles\\nimpacting the Earth Hill sphere above 1.5 km/s. The delivery process is\\nslightly sensitive to the initial observed cone range and driven by synodic\\nperiods. The launch locations for material delivery to Mars were predominantly\\nnorthern the DART impact site, while they displayed a southwestern tendency for\\nthe Earth-Moon system. Larger particles exhibit a marginally greater likelihood\\nof reaching Mars, while smaller particles favor delivery to Earth-Moon,\\nalthough this effect is insignificant. To support observational campaigns for\\nDART-created meteors, we provide comprehensive information on the encounter\\ncharacteristics (orbital elements and radiants) and quantify the orbital\\ndecoherence degree of the released meteoroids.\",\"PeriodicalId\":501209,\"journal\":{\"name\":\"arXiv - PHYS - Earth and Planetary Astrophysics\",\"volume\":\"1 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-08-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - PHYS - Earth and Planetary Astrophysics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2408.02836\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - Earth and Planetary Astrophysics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2408.02836","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Delivery of DART Impact Ejecta to Mars and Earth: Opportunity for Meteor Observations
NASA's DART and ESA's Hera missions offer a unique opportunity to investigate
the delivery of impact ejecta to other celestial bodies. We performed ejecta
dynamical simulations using 3 million particles categorized into three size
populations (10 cm, 0.5 cm, and 30 $\mu$m) and constrained by early post-impact
LICIACube observations. The main simulation explored ejecta velocities ranging
from 1 to 1,000 m/s, while a secondary simulation focused on faster ejecta with
velocities from 1 to 2 km/s. We identified DART ejecta orbits compatible with
the delivery of meteor-producing particles to Mars and Earth. Our results
indicate the possibility of ejecta reaching the Mars Hill sphere in 13 years
for launch velocities around 450 m/s, which is within the observed range. Some
ejecta particles launched at 770 m/s could reach Mars's vicinity in 7 years.
Faster ejecta resulted in a higher flux delivery towards Mars and particles
impacting the Earth Hill sphere above 1.5 km/s. The delivery process is
slightly sensitive to the initial observed cone range and driven by synodic
periods. The launch locations for material delivery to Mars were predominantly
northern the DART impact site, while they displayed a southwestern tendency for
the Earth-Moon system. Larger particles exhibit a marginally greater likelihood
of reaching Mars, while smaller particles favor delivery to Earth-Moon,
although this effect is insignificant. To support observational campaigns for
DART-created meteors, we provide comprehensive information on the encounter
characteristics (orbital elements and radiants) and quantify the orbital
decoherence degree of the released meteoroids.