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Article Contents

ABSTRACT

1.INTRODUCTION

2.METHODS TO MEASURE QUASAR BH MASSES
2.1.Virial BH Masses: From Reverberation Mapping to Single-Epoch Methods
2.2.Other Methods to Estimate Quasar BH Masses

3.CAVEATS, UNCERTAINTIES, AND BIASES OF VIRIAL BH MASSES
3.1.Physical Concerns
3.2.Practical Concerns
3.3.Consequences of the Uncertainties in SE Mass Estimates

4.APPLICATIONS TO STATISTICAL QUASAR SAMPLES
4.1.Early Growth of SMBHs
4.2.Quasar Demographics in the Mass-Luminosity Plane
4.3.Evolution of BH-Bulge Scaling Relations

5.SUMMARY AND FUTURE PERSPECTIVES

REFERENCES