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What Information About a Cluster of Galaxies Can Lensing of Background

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What information about a cluster of galaxies can lensing of background galaxies by the cluster be used to determine?


Definitions:

Nonsystematic Variance

Nonsystematic variance, also known as unsystematic risk, is the portion of an investment's risk that is attributable to the specific risk of its issuer and can be mitigated through diversification.

Security Market Line

A graphical representation of the capital asset pricing model, showing the expected return of an investment as a function of its systemic risk.

Nonsystematic Risk

The risk associated with an individual asset or investment, resulting from factors specific to its issuer's performance and not the broader market.

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