Uniformity of the radial distribution of quasars in the chronometric cosmology and the X-ray background

Abstract

view Abstract Citations (8) References (6) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Uniformity of the radial distribution of quasars in the chronometric cosmology and the X-ray background Segal, I. E. ; Loncaric, J. ; Segal, W. Abstract The partial derivative of the log of the quasar frequency with respect to the apparent magnitude relation in the chronometric cosmology, which is inherently nonevolutionary, becomes infinite just before it vanishes identically, at an apparent magnitude less than 0.75 mag fainter than that at redshift 1, for any single luminosity class of spectral index less than 1. Consequently, this cosmology has the potential for nonevolutionary reconciliation of the steep rise in quasar counts at fainter magnitudes noted by Green and Schmidt (1978) and by Braccesi et al. (1979) with strong constraints on the counts at very faint magnitudes deriving from X-ray observations and analysis by Tananbaum et al. (1979). Analysis of the complete Braccesi sample treated by Green and Schmidt provides quantitative confirmation of this potential and shows that its quasar frequency as a function of apparent magnitude is in satisfactory agreement with that predicted by the chronometric cosmology on the basis of its redshift-volume relation and the luminosity function determined from the sample. The claim by Green and Schmidt for cosmology independence in their determination of strong evolution in the radial distribution of quasars thus requires revision. Publication: The Astrophysical Journal Pub Date: July 1980 DOI: 10.1086/158085 Bibcode: 1980ApJ...239...38S Keywords: Background Radiation; Cosmic X Rays; Cosmology; Quasars; Radial Distribution; Star Distribution; Big Bang Cosmology; Red Shift; Stellar Magnitude; X Ray Sources; Astrophysics full text sources ADS |