Evolution of the quasar luminosity function

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dc.contributor.authorSchade, David Josephen_US
dc.date.accessioned2024-08-15T18:20:45Z
dc.date.available2024-08-15T18:20:45Z
dc.date.copyright1988en_US
dc.date.issued1988
dc.degree.departmentDepartment of Physics and Astronomyen_US
dc.degree.levelMaster of Science M.Sc.en
dc.description.abstractData from all available complete quasar surveys are combined to form a large sample of objects covering a wide range in redshift and luminosity. Numerical estimates of the luminosity function are derived for redshifts up to ~ 3. The most extreme evolution occurs from the present to redshift ( z) ~ l. ; a maximum in comoving density occurs at z ~ l.7 after which the density declines. Pure density evolution is ruled out. It is shown that a pure luminosity evolution model fits the data for redshift less than that where the density drops as does a second model which is not a pure luminosity evoluĀ­tion model. Beyond this redshift, pure luminosity evolution is not a valid model.
dc.format.extent59 pages
dc.identifier.urihttps://hdl.handle.net/1828/19626
dc.rightsAvailable to the World Wide Weben_US
dc.titleEvolution of the quasar luminosity functionen_US
dc.typeThesisen_US

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