Publication:
Stellar Structure in a Newtonian Theory with Variable G

Дата
2021
Авторы
Fabris, J. C.
Ottoni, T.
Toniato, J. D.
Velten, H.
Journal Title
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Издатель
Научные группы
Организационные подразделения
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Организационная единица
Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
Выпуск журнала
Аннотация
A Newtonian-like theory inspired by the Brans-Dicke gravitational Lagrangian has been recently proposed by us. For static configurations, the gravitational coupling acquires an intrinsic spatial dependence within the matter distribution. Therefore, the interior of astrophysical configurations may provide a testable environment for this approach as long as no screening mechanism is evoked. In this work, we focus on the stellar hydrostatic equilibrium structure in such a varying Newtonian gravitational coupling G scenario. A modified Lane-Emden equation is presented and its solutions for various values of the polytropic index are discussed. The role played by the theory parameter omega, the analogue of the Brans-Dicke parameter, in the physical properties of stars is discussed.
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Цитирование
Stellar Structure in a Newtonian Theory with Variable G / Fabris, JC [et al.] // Physics (Switzerland). - 2021. - 3. - № 4. - P. 1123-1132. - 10.3390/physics3040071
URI
https://www.doi.org/10.3390/physics3040071
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85124946038&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000739030300001
 https://openrepository.mephi.ru/handle/123456789/25207
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