Redshift
From CreationWiki, the encyclopedia of creation science
A redshift are spectral lines that come in two types, emission lines that are light on dark and absorption lines that are dark on light. When the frequencies do not line up right the spectra is shifted, with red towards the longer end and blue towards the shorter end.
When Edwin Hubble discovered galactic redshift he interpreted it as a Doppler shift. This change in frequency is caused by motion. A redshift indicates that the source is moving away from the observer and a blue shift indicates that the source is moving towards the observer. George Lemaitre's idea that it is caused by the wavelength of light being stretched in transit by a continual expansion of space has become the prominent interpretation of galactic redshift.
Galactic redshift does suggest expanding space-time which fits the Big Bang but it fits Dr. Russell Humphreys’ White hole cosmology as well.
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A New Redshift Interpretation
In "A New Redshift Interpretation," Robert Gentry suggests an interpretation of galactic redshift that is a combination of Doppler and gravitational red shift.
Robert Gentry's New Redshift Interpretation (NRI) interprets galactic red shift as a combination of Doppler and gravitational red shift. According to this cosmology the Cosmic background radiation (CBR) is the gravitational red shifted glow of a hydrogen boundary layer with a temperature of 5400K. He has suggested that this boundary layer actually consists of a thin shell of over lapping galaxies.
Like the White hole cosmology, NRI uses a bounded universe. While they are competing cosmologies, it is conceivable that they could be combined, since if dark energy were added to the White hole cosmology's starting conditions the results would resemble NRI.
NRI has an outward gravitational force, that Gentry says is caused by vacuum pressure/energy. This is effectively the same as dark energy and in NRI, dark energy can be substituted for vacuum pressure/energy. In any case the formula for this cosmic gravitational red shift is:
- G = Gravitational Constant.
- H = Hubble's Constant.
- r = Radius from the center.
- c = The Speed of light.
- z +1 = Gravitational red shift.
When a standard Doppler red shift of galaxies is added the result is:
- z = Change in observed red shift.
- Hubble relationship
When this is compared to the standard Hubble relationship it is clear that they are basically identical for near by galaxies. The graph to the right shows a comparison
Note that NRI's and Hubble's predicted red shifts are the same on this graph up to about 1.5 billion Ly, and that they are close up to about 3.5 billion Ly.
Robert Gentry has answered the criticism of NRI, most of which is based on a misunderstanding of it and an inability separated the observed red shift from Hubble's interpretation.
- Reference: A New Redshift Interpretation
- Reference: The Genuine Cosmic Rosetta
- Reference: Remarks on the "New Redshift Interpretation"
- Reference: The New Redshift Interpretation Affirmed
News
- Discovery By UCSD Astronomers Poses A Cosmic Puzzle: Can A 'Distant' Quasar Lie Within A Nearby Galaxy? An international team of astronomers has discovered within the heart of a nearby spiral galaxy a quasar whose light spectrum indicates that it is billions of light years away. By Kim McDonald. UDSD News January 10, 2005
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Related References
Secular References
Creationist References
- Astronomical Problems by Michael Oard. TJ 9(1):5–6. April 1995
- Arp's Anomalies by Bert Thompson, Ph.D. and Brad Harrub, Ph.D. Reason & Revelation. May 2003 - 23[4]:25-31
- Our galaxy is the centre of the universe, 'quantized' red shifts show by D. Russell Humphreys. TJ 16(2):95–104. August 2002.
See Also
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