componente di materia oscura nelle galassie ellittiche
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componente di materia oscura nelle galassie ellittiche

componente di materia oscura nelle galassie ellittiche


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About the Book

Lo scopo di questo lavoro di tesi triennale è determinare la frazione di materia oscura in un campione di galassie ellittiche tramite il lensing gravitazionale, il fenomeno della deflessione della luce a causa della presenza di un campo gravitazionale tra l'osservatore e la sorgente. Le lenti gravitazionali considerate sono alcune galassie ellittiche studiate nella survey KiDS (Kilo Degree Survey). Per ciascuna di esse, tramite il software Lenstool, è stata ricavata la dispersione di velocità, utilizzando come modello di distribuzione di massa quello della sfera singolare isoterma (Singular Isothermal Sphere, SIS). Sulla base di questo modello, si è determinata la massa totale di ciascuna galassia entro il raggio di Einstein. Nota la massa luminosa di ciascuna galassia, per differenza è stata ottenuta la componente di materia oscura. Nella parte finale della tesi si confrontano i risultati ottenuti con alcuni lavori in letteratura. Questo lavoro è stato svolto sotto la supervisione del prof. Giovanni Covone e del dr. Crescenzo Tortora presso il dipartimento di Fisica dell'Università degli studi di Napoli Federico II.


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Product Details
  • ISBN-13: 9786200841001
  • Publisher: KS Omniscriptum Publishing
  • Publisher Imprint: Edizioni Accademiche Italiane
  • Height: 229 mm
  • No of Pages: 56
  • Spine Width: 3 mm
  • Width: 152 mm
  • ISBN-10: 6200841004
  • Publisher Date: 15 Apr 2023
  • Binding: Paperback
  • Language: Italian
  • Returnable: N
  • Weight: 145 gr


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