Computer Science – Sound
Scientific paper
Dec 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976mnras.177..595y&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 177, Dec. 1976, p. 595-599.
Computer Science
Sound
1
Astronomical Models, Dynamic Stability, Quasars, Red Shift, Relativity, Spheres, Adiabatic Conditions, Energy Distribution, Equations Of State, Radial Distribution
Scientific paper
Models of massive spheres have been previously constructed within the framework of general relativity in order to calculate the maximum central redshift consistent with dynamic stability. Such a maximum was computed in terms of an approximation corresponding to a physical situation where the speed of sound in the envelope of a sphere is infinitely large. The present paper improves upon the result so obtained and calculates the maximum possible central redshift by assuming physically plausible conditions. A value of 1.414 is determined, and it is shown that configurations with greater central redshifts are dynamically unstable. Based on this result, the cosmological redshift of quasar OH 471 is computed to be 0.76, which is greater than the maximum value found for ordinary galaxies.
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