Re: CMBR- A More Explicit Answer

Spoonfed wrote:
By accelerating one way or another ,
...we would not easily see very much change in the apparent color of the CMBR. While it is easy to change our speed with reference to a stopped object, (like the ground), it is hard to change our speed
with something traveling near the speed of light.

The CMBR is traveling at c relative to any locally-inertial frame, and it is not possible to "change our speed with reference" to the CMBR. Of course I use the term "the CMBR" in the usual way that involves a pun on the word "the" -- "the" CMBR is by no means a single object, it is a collection of an enormous number of light rays traveling in all directions....


You
would have very little success in changing your velocity with
respect to the CMBR, although you might have some luck changing
your relative momentum.  The gas from which the
CMBR emanates is moving around 0.999999976238c.

You are apparently attempting to apply SR to the CMBR. That's hopeless. The CMBR is related to cosmological processes that require GR for analysis.


By accelerating until the gamma value on both sides was 4586.5 (halfway
in between their current values) you could get rid of the dipole anisotropy.

Not true. Relative to the sun one merely needs to travel about 370 km/sec in the proper direction to make the dipole anisotropy become zero. That is ~0.001 c and gamma is just slightly greater than 1.


The equation for relativistic doppler shift is
(1) f_actual/f_observed=sqrt((1+v/c)/(1-v/c))

That's irrelevant, as this is a _cosmological_ redshift, not a Doppler shift due to relative velocities.


> [...]


Tom Roberts	tjroberts@xxxxxxxxxx
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