Publication:
Time delay induced by plasma in strong lens systems

Файлы
W4383484419.pdf(225.16 KB)
Дата
2023
Авторы
Bisnovatyi-Kogan, G. S.
Tsupko, O. Yu.
Journal Title
Journal ISSN
Volume Title
Издатель
Научные группы
Организационные подразделения
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Организационная единица
Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
Выпуск журнала
Аннотация
ABSTRACT 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.
Описание
Ключевые слова
Gravitational Lensing , Pulsar Timing
Цитирование
Bisnovatyi-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
URI
https://www.doi.org/10.1093/mnras/stad2030
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85168696427&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:001048625100020
 https://openrepository.mephi.ru/handle/123456789/29199
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