FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2055738090> ?p ?o ?g. }

• W2055738090 abstract "We model the massive dark object at the center of the Galaxy as a Schwarzschild black hole as well as Janis-Newman-Winicour naked singularities, characterized by the mass and scalar charge parameters, and study gravitational lensing (particularly time delay, magnification centroid, and total magnification) by them. We find that the lensing features are qualitatively similar (though quantitatively different) for Schwarzschild black holes, weakly naked, and marginally strongly naked singularities. However, the lensing characteristics of strongly naked singularities are qualitatively very different from those due to Schwarzschild black holes. The images produced by Schwarzschild black hole lenses and weakly naked and marginally strongly naked singularity lenses always have positive time delays. On the other hand, strongly naked singularity lenses can give rise to images with positive, zero, or negative time delays. In particular, for a large angular source position the direct image (the outermost image on the same side as the source) due to strongly naked singularity lensing always has a negative time delay. We also found that the scalar field decreases the time delay and increases the total magnification of images; this result could have important implications for cosmology. As the Janis-Newman-Winicour metric also describes the exterior gravitational field of a scalar star, naked singularities as well as scalar star lenses, if these exist in nature, will serve as more efficient cosmic telescopes than regular gravitational lenses." @default.
• W2055738090 created "2016-06-24" @default.
• W2055738090 creator A5006227454 @default.
• W2055738090 creator A5039380469 @default.
• W2055738090 date "2008-06-06" @default.
• W2055738090 modified "2023-10-06" @default.
• W2055738090 title "Time delay and magnification centroid due to gravitational lensing by black holes and naked singularities" @default.
• W2055738090 cites W1569488583 @default.
• W2055738090 cites W192172863 @default.
• W2055738090 cites W1969769369 @default.
• W2055738090 cites W1972548138 @default.
• W2055738090 cites W1974612564 @default.
• W2055738090 cites W1981314806 @default.
• W2055738090 cites W1986105715 @default.
• W2055738090 cites W1990092565 @default.
• W2055738090 cites W1996395752 @default.
• W2055738090 cites W1998837397 @default.
• W2055738090 cites W1999699740 @default.
• W2055738090 cites W2000705853 @default.
• W2055738090 cites W2000940839 @default.
• W2055738090 cites W2002590540 @default.
• W2055738090 cites W2008538023 @default.
• W2055738090 cites W2010090392 @default.
• W2055738090 cites W2012816229 @default.
• W2055738090 cites W2013172943 @default.
• W2055738090 cites W2025789727 @default.
• W2055738090 cites W2028033275 @default.
• W2055738090 cites W2031368321 @default.
• W2055738090 cites W2032216071 @default.
• W2055738090 cites W2036149649 @default.
• W2055738090 cites W2038915951 @default.
• W2055738090 cites W2045886921 @default.
• W2055738090 cites W2046430918 @default.
• W2055738090 cites W2048801463 @default.
• W2055738090 cites W2056755330 @default.
• W2055738090 cites W2059286918 @default.
• W2055738090 cites W2070478619 @default.
• W2055738090 cites W2073506407 @default.
• W2055738090 cites W2076194328 @default.
• W2055738090 cites W2077911101 @default.
• W2055738090 cites W2081057717 @default.
• W2055738090 cites W2092541514 @default.
• W2055738090 cites W2097618194 @default.
• W2055738090 cites W2102467421 @default.
• W2055738090 cites W2107846563 @default.
• W2055738090 cites W2108841395 @default.
• W2055738090 cites W2146406584 @default.
• W2055738090 cites W2146679221 @default.
• W2055738090 cites W2148847939 @default.
• W2055738090 cites W2155265274 @default.
• W2055738090 cites W2242012936 @default.
• W2055738090 cites W2949738691 @default.
• W2055738090 cites W3098503354 @default.
• W2055738090 cites W3100101589 @default.
• W2055738090 cites W3100103967 @default.
• W2055738090 cites W3100356758 @default.
• W2055738090 cites W3100694786 @default.
• W2055738090 cites W3100904947 @default.
• W2055738090 cites W3101311129 @default.
• W2055738090 cites W3101498727 @default.
• W2055738090 cites W3102703161 @default.
• W2055738090 cites W3102991037 @default.
• W2055738090 cites W3103503159 @default.
• W2055738090 cites W3106090585 @default.
• W2055738090 cites W3106236654 @default.
• W2055738090 cites W3106529256 @default.
• W2055738090 cites W3125545902 @default.
• W2055738090 cites W4246978135 @default.
• W2055738090 doi "https://doi.org/10.1103/physrevd.77.124014" @default.
• W2055738090 hasPublicationYear "2008" @default.
• W2055738090 type Work @default.
• W2055738090 sameAs 2055738090 @default.
• W2055738090 citedByCount "294" @default.
• W2055738090 countsByYear W20557380902012 @default.
• W2055738090 countsByYear W20557380902013 @default.
• W2055738090 countsByYear W20557380902014 @default.
• W2055738090 countsByYear W20557380902015 @default.
• W2055738090 countsByYear W20557380902016 @default.
• W2055738090 countsByYear W20557380902017 @default.
• W2055738090 countsByYear W20557380902018 @default.
• W2055738090 countsByYear W20557380902019 @default.
• W2055738090 countsByYear W20557380902020 @default.
• W2055738090 countsByYear W20557380902021 @default.
• W2055738090 countsByYear W20557380902022 @default.
• W2055738090 countsByYear W20557380902023 @default.
• W2055738090 crossrefType "journal-article" @default.
• W2055738090 hasAuthorship W2055738090A5006227454 @default.
• W2055738090 hasAuthorship W2055738090A5039380469 @default.
• W2055738090 hasBestOaLocation W20557380902 @default.
• W2055738090 hasConcept C104954878 @default.
• W2055738090 hasConcept C115304011 @default.
• W2055738090 hasConcept C121332964 @default.
• W2055738090 hasConcept C124017977 @default.
• W2055738090 hasConcept C12843 @default.
• W2055738090 hasConcept C136125196 @default.
• W2055738090 hasConcept C147452769 @default.
• W2055738090 hasConcept C31258907 @default.
• W2055738090 hasConcept C33024259 @default.
• W2055738090 hasConcept C38437897 @default.
• W2055738090 hasConcept C41008148 @default.

• next