Introduction

The object PKS 0237-23 was identified as a quasar by Arp et al. (1967). They reported five emission lines in its spectrum and interpreted the spectrum on the redshift hypothesis as having an apparent redshift of about 2.22. This quasar has played an important role in the history of quasars. So many absorption lines were found in the spectrum of this quasar that multiple redshift hypothesis was advanced to account for them. In this paper we identify the emission and absorption lines in the spectrum of this quasar on the basis of the plasma-laser star (PLS) model of quasars (Varshni, 1973, 1974a, 1975a, 1977a, 1977b, 1978, 1979, 1985, 1988a, 1988b, 1988c, Varshni and Lam, 1976, Varshni and Nasser 1986). Our theory does away with the artificial assumption of redshifts. Laser action is responsible for the broad emission lines.


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