Correlation Between Optical And Uv Variability Of A Large Sample Of Quasars

dc.contributor.advisorAnno Kare (PhD)
dc.contributor.advisorEndale Gemechu (PhD)
dc.contributor.authorSelamawit Abebe
dc.date.accessioned2025-12-16T13:50:21Z
dc.date.issued2024-06
dc.description.abstractThis Study Investigates The Relationship Between The Optical And Uv Light From Quasars Andtheir Redshift, Revealing A Strong Positive Linear Correlation Between The Uv And Opticalband As Indicated By A Pearson Cross-Correlation Coefficient Of 0.93988 And The Correlationis Ruled Out 95% Confidence Level However, This Correlation Is Not Perfect , Suggesting Otherfactors At Play, Such As Changes In The Rate Of Matter Accumulation And Echo-Like Phenomenain The Accretion Disc Of A Supermassive Black Hole. The Study Also Explores The Intricate Re-Lationship Between The Infrared, Optical, And Uv Light Emitted By Quasars, Finding That As Theinfrared Luminosity Of A Quasar Increases, There Is A Corresponding Increase In Uv Emissionand A Decrease In Optical Emission. However, The Relationship Between Infrared, Optical, Anduv Light From Quasars Is Complex And Can Be Influenced By A Variety Of Factors Related Tothe Black Hole And Its Environment. The Study Also Utilizes The Structure Function To Analyzethe Variability In Uv And Optical Measurements Of Quasars, Rejecting The Hypothesis That Allquasars?��? Inherent Uv And Optical Fluctuations Are Entirely Correlated. The Density Plot Showsthe Distribution And Concentration Of Optical And Uv Data Over Redshift, Providing Insightsinto The Evolution Of Quasars Over Time.en_US
dc.description.sponsorshipASTUen_US
dc.identifier.urihttp://10.240.1.28:4000/handle/123456789/525
dc.language.isoen_USen_US
dc.publisherASTUen_US
dc.subjectQuasar, Luminosity, Redshift, Optical/Uv Variabilityen_US
dc.titleCorrelation Between Optical And Uv Variability Of A Large Sample Of Quasarsen_US
dc.typeThesisen_US

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