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Hills and holes in the microlensing light curve due to plasma environment around gravitational lens

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dc.contributor.authorTsupko, O. Y.
dc.contributor.authorBisnovatyi-Kogan, G. S.
dc.contributor.authorБисноватый-Коган, Геннадий Семенович
dc.date.accessioned2024-11-25T16:33:57Z
dc.date.available2024-11-25T16:33:57Z
dc.date.issued2020
dc.description.abstractIn this paper, we investigate the influence of the plasma surrounding the gravitational lens on the effect of microlensing. In presence of plasma around the lens, the deflection angle is determined by both the gravitational field of the lens and the chromatic refraction in the inhomogeneous plasma. We calculate microlensing light curves numerically for point-mass lens surrounded by power-law density distribution of plasma. A variety of possible curves is revealed, depending on the plasma density and frequency of observations. In the case of significant influence of plasma, the shape of microlensing light curve is strongly deformed in comparison with vacuum case. If the refractive deflection is large enough to compensate or to overcome the gravitational deflection, microlensing images can completely disappear for the observer. In this case, the remarkable effect occurs: formation of a 'hole' instead of a 'hill' in the center of microlensing light curve. Observational prospects of 'hill-hole' effect in different microlensing scenarios are discussed.
dc.format.extentС. 5636-5649
dc.identifier.citationTsupko, O. Y. Hills and holes in the microlensing light curve due to plasma environment around gravitational lens / Tsupko, OY, Bisnovatyi-Kogan, GS // Monthly Notices of the Royal Astronomical Society. - 2020. - 491. - № 4. - P. 5636-5649. - 10.1093/mnras/stz3365
dc.identifier.doi10.1093/mnras/stz3365
dc.identifier.urihttps://www.doi.org/10.1093/mnras/stz3365
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85089771728&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000512310600078
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/20328
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.titleHills and holes in the microlensing light curve due to plasma environment around gravitational lens
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue4
oaire.citation.volume491
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relation.isAuthorOfPublication.latestForDiscovery8207cbb5-6929-4b61-a959-03839711b81e
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