Publication:
Rapidly rotating neutron stars in f(R, T) = R+ 2 λT gravity

Файлы
W4365512105.pdf(923.72 KB)
Дата
2023
Авторы
da Silva, F. M.
Santos, L. C. N.
Mota, C. E.
da Costa, T. O. F.
Fabris, J. C.
Journal Title
Journal ISSN
Volume Title
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
Abstract In this work, we study the influence of f ( R , T ) gravity on rapidly rotating neutron stars. First we discuss the main aspects of this modified theory of gravity where the gravitational Lagrangian is an arbitrary function of the Ricci scalar R and of the trace of the energy–momentum tensor T . Then we present the basic equations for neutron stars including the equations of state used in the present work to describe the hadronic matter. Some physical quantities of interest are calculated such as mass–radius relations, moments of inertia, angular momentum, and compactness. By considering four different rotation regimes, we obtain results that indicate substantial modifications in the physical properties of neutron stars in f ( R , T ) gravity when compared to those in the context of general relativity. In particular, the mass–radius relation for sequences of stars indicates that f ( R , T ) gravity increases the mass and the equatorial radius of the neutron stars for stars rotating with an angular velocity smaller than Kepler limit.
Описание
Ключевые слова
General Relativity Tests , Moment of inertia
Цитирование
Rapidly rotating neutron stars in f(R, T) = R+ 2 λT gravity / Da Silva, F. M. [et al.] // European Physical Journal C. - 2023. - 83. - № 4. - 10.1140/epjc/s10052-023-11466-2
URI
https://www.doi.org/10.1140/epjc/s10052-023-11466-2
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85153196567&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000971921800001
 https://openrepository.mephi.ru/handle/123456789/30096
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