Redshift Quantization - Subsequent Work By Other Researchers

Subsequent Work By Other Researchers

In the late 1980s and early 1990s, four studies on redshift quantization were performed:

1. In 1989, Martin R. Croasdale reported finding a quantization of redshifts using a different sample of galaxies in increments of 72 km/s (Δz = 2.4×10−4).
2. In 1990, Bruce Guthrie and William Napier reported finding a "possible periodicity" of the same magnitude for a slightly larger data set limited to bright spiral galaxies and excluding other types
3. In 1992, Guthrie and Napier proposed the observation of a different periodicity in increments of Δz = 1.24×10−4 in a sample of 89 galaxies
4. In 1992, G. Paal, et al. and A. Holba, et al. reanalyzed the redshift data from a fairly large sample of galaxies and concluded that there was an unexplained periodicity of redshifts.
5. In 1994, A. Holba, et al. also reanalyzed the redshift data of quasars and concluded that there was unexplained periodicity of redshifts in this sample, too.

All of these studies were performed before the tremendous advances in redshift cataloging that would be made at the end of the 1990s. Since that time, the number of galaxies for which astronomers have measured redshifts has increased by several orders of magnitude.