{"title":"Gravity Assist as a Test of Relativistic Gravity","authors":"S. V. Bolokhov, K. A. Bronnikov, M. V. Skvortsova","doi":"10.1134/S0202289322040053","DOIUrl":null,"url":null,"abstract":"<p>We consider the gravity assist maneuver, that is, a correction of spacecraft motion at its passing near a planet, as a tool for evaluating the Eddington post-Newtonian parameters <span>\\(\\beta\\)</span> and <span>\\(\\gamma\\)</span>, characterizing vacuum spherically symmetric gravitation fields in metric theories of gravity. We estimate the effect of variation in <span>\\(\\beta\\)</span> and <span>\\(\\gamma\\)</span> on a particular trajectory of a probe launched from the Earth’s orbit and passing closely near Venus, where relativistic corrections slightly change the impact parameter of probe scattering in Venus’s gravitational field. It is shown, in particular, that a change of <span>\\(10^{-4}\\)</span> in <span>\\(\\beta\\)</span> or <span>\\(\\gamma\\)</span> leads to a shift of about 50 km in the probe’s aphelion position.</p>","PeriodicalId":583,"journal":{"name":"Gravitation and Cosmology","volume":null,"pages":null},"PeriodicalIF":1.2000,"publicationDate":"2022-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Gravitation and Cosmology","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1134/S0202289322040053","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 1
Abstract
We consider the gravity assist maneuver, that is, a correction of spacecraft motion at its passing near a planet, as a tool for evaluating the Eddington post-Newtonian parameters \(\beta\) and \(\gamma\), characterizing vacuum spherically symmetric gravitation fields in metric theories of gravity. We estimate the effect of variation in \(\beta\) and \(\gamma\) on a particular trajectory of a probe launched from the Earth’s orbit and passing closely near Venus, where relativistic corrections slightly change the impact parameter of probe scattering in Venus’s gravitational field. It is shown, in particular, that a change of \(10^{-4}\) in \(\beta\) or \(\gamma\) leads to a shift of about 50 km in the probe’s aphelion position.
期刊介绍：
Gravitation and Cosmology is a peer-reviewed periodical, dealing with the full range of topics of gravitational physics and relativistic cosmology and published under the auspices of the Russian Gravitation Society and Peoples’ Friendship University of Russia. The journal publishes research papers, review articles and brief communications on the following fields: theoretical (classical and quantum) gravitation; relativistic astrophysics and cosmology, exact solutions and modern mathematical methods in gravitation and cosmology, including Lie groups, geometry and topology; unification theories including gravitation; fundamental physical constants and their possible variations; fundamental gravity experiments on Earth and in space; related topics. It also publishes selected old papers which have not lost their topicality but were previously published only in Russian and were not available to the worldwide research community
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