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Time delay induced by plasma in strong lens systems

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dc.contributor.authorBisnovatyi-Kogan, G. S.
dc.contributor.authorTsupko, O. Yu.
dc.contributor.authorБисноватый-Коган, Геннадий Семенович
dc.date.accessioned2024-12-27T09:19:19Z
dc.date.available2024-12-27T09:19:19Z
dc.date.issued2023
dc.description.abstractABSTRACT If the gravitational lens is surrounded by non-homogeneous plasma, in addition to the vacuum gravitational deflection, chromatic refraction occurs. Also, the speed of signal propagation decreases compared to a vacuum. In this article, we investigate analytically the time delay in the case of gravitational lensing in plasma, focusing on strong lens systems. We take into account the following contributions: geometric delay due to trajectory bending in the presence of both gravity and plasma; potential delay of the ray in the gravitational field of the lens; dispersion delay in the plasma due to decrease in the speed of light signal in the medium. We consider the singular isothermal sphere as a model of a gravitational lens and the arbitrary spherically symmetric distribution of surrounding plasma. For this scenario, plasma corrections for the time delay between two images are found in a compact analytical form convenient for estimates.
dc.format.extentС. 3060-3067
dc.identifier.citationBisnovatyi-Kogan, G. S. Time delay induced by plasma in strong lens systems / Bisnovatyi-Kogan, G. S., Tsupko, O. Yu. // Monthly Notices of the Royal Astronomical Society. - 2023. - 524. - № 2. - P. 3060-3067. - 10.1093/mnras/stad2030
dc.identifier.doi10.1093/mnras/stad2030
dc.identifier.urihttps://www.doi.org/10.1093/mnras/stad2030
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85168696427&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:001048625100020
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/29199
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.subjectGravitational Lensing
dc.subjectPulsar Timing
dc.titleTime delay induced by plasma in strong lens systems
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue2
oaire.citation.volume524
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relation.isAuthorOfPublication.latestForDiscovery8207cbb5-6929-4b61-a959-03839711b81e
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