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Article Contents

TITLE PAGE

1.INTRODUCTION

2.DIFFUSE UV EMISSION FROM THE INTERGALACTIC MEDIUM

2.1.Quasar Absorption Lines in Brief

2.2.Redshifted Lyman Alpha Emission from the IGM Revisited

2.3.Redshifted HeII lambda 304Å Emission from the IGM Revisited

2.4.Accumulated Lyman Continuum Opacity of the Universe

3.THE INTEGRATED UV LIGHT OF GALAXIES AND QUASARS

3.1.Integration of Theoretical Galaxy Evolution Models

3.2.UV Background Fluctuation Measurements

3.3.Extrapolation of Ultraviolet Galaxy Counts

3.4.The Integrated UV Light of Quasars and AGNs

4.RADIATIVE DECAY OF EXOTIC PARTICLES

5.SUMMARY AND CONCLUSIONS

6.APPENDIX: DIFFUSE BACKGROUND FROM EXTRAGALACTIC SOURCES

REFERENCES