From Osher Doctorow
From the Chandra results on supermassive black holes yielding the
"deepest note ever heard in the Universe" (see also Section 85 of this
thread, to which I recently added) and the indications that sound
plays a key role in energy transfer in those black holes which keeps
them warm (which I also discussed in this thread), we have a curious
picture of sound vs light in black holes:
1) Sound and light are "coordinated" in (supermassive) black hole
energy and its transmission.
However, look at this:
2) Sound is a longitudinal wave (compression-expansion in direction of
motion or propagation), while light and electromagnetism in general
are transverse waves (replace direction of motion or propagation by
"perpendicular to").
3) Sound is relatively slow, light is/has supposedly the "fastest"
speed.
Since indications are that the light-sound or EM-sound relationships
are Fundamental in the Universe, isn't there something unusual about
their relative speeds and "directions of vibration"?
Recall that I have pointed out that light should actually increase its
speed in black holes just as massive objects do (up to being "torn
apart" by tidal forces - but the claim is usually made that light and
electromagnetism goes through untouched).
A possible resolution of the "asymmetries" between light and sound
woud occur if both light and sound were accelerated in black holes!
In fact, if they were both extremely fast in the early Universe, their
"unification" would be more plausible.
Readers should examine possible implications of such scenarios, not
only for past cosmology but for present applications. For example:
4) Could sound be used to detect mini-black-holes or some slightly
bigger ones?
5) Could black holes emit some type of wave related to sound in a
similar way to gamma rays' and X-rays' relationships to light?
The scenario gets even weirder, however. Remember that for light to
be transmitted from source A to receiver B, an opaque object should
ideally not interfere. But sound could get still get through many
opaque objects. Hence:
6) Could sonar study black holes (if we ever got near enough to black
holes to use it)?
7) Could spacetime and its "contents" outside black holes be affected
by the accelerated sound or soundlike waves postulated for black
holes, and how would such an effect be detected?
Osher Doctorow
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