are blackholes made by tachyons?

Question

i heard about it before althought i think its stupid.is it true?

Answer 1

interesting
its the first time i hear about tachyons along with a black hole.

if tachyons would exists black holes would have not much of an influence on them since they should always travel faster than c and never reach c as their minimum speed.

Now a black hole forms by massive ammounts of matter piled up in one location, be it a collapsding star or any other mass which adds to it.
This matter is matter in common sense and it has mass.
mass (according to general relativity) cannot travel at speeds > c cause their mass grows with speed to become infinite with c.
Now tachyons ...what mass should they have if capable travelling >c a negative ?
if so.. a tachyon would make the BH shrink, for compensating an ammount of energy from it, inside.

if that would be possible BH would shrink faster than expected.

Answer 2

"Formation of Black Holes

Regular black holes are thought to form from heavy stars (perhaps those which start off with masses more than 20 or 25 times that of the Sun, but this is still an area of active research). When these stars end their lives in a supernova explosion, their cores collapse and gravity wins out over any other force that might be able to hold the star up.

Eventually, the star collapses so much that it is contained within its Schwarzschild radius, or event horizon, the boundary within which light cannot escape. At this point, the black hole is extremely tiny; a black hole with the mass of the Sun would fit in a small town, while one with the mass of the Earth would fit in the palm of your hand! The material inside the Schwarzschild radius will continue to collapse indefinitely, reaching the point where our understanding of the laws of physics breaks down. But no information from inside the Schwarzschild radius can escape to the outside world.

Supermassive black holes, meanwhile, form differently - perhaps from the merger of many smaller black holes early in the universe's history - and grow over the years as they suck in gas from their surroundings. The formation of these objects and their relationship to the galaxy that harbors them is still an area of active research."

http://curious.astro.cornell.edu/blackholes.php

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"Static black holes in two-dimensional string theory can carry tachyon hair. Configurations which are nonsingular at the event horizon have a nonvanishing asymptotic energy density. Such solutions can be smoothly extended through the event horizon and have a nonvanishing energy flux emerging from the past singularity. Dynamical processes will not change the amount of tachyon hair on a black hole. In particular, there will be no tachyon hair on a black hole formed in gravitational collapse if the initial geometry is the linear dilaton vacuum. There also exist static solutions with a finite total energy, which have singular event horizons. Simple dynamical arguments suggest that black holes formed in gravitational collapse will not have tachyon hair of this type.

©1993 The American Physical Society"

http://prola.aps.org/abstract/PRD/v48/i6/p2415_1

Answer 3

The existence of tachyons is currently theoretical. Until there existence is proven, we can't state as a fact that they cause anything. Black holes are formed when a sufficient mass is compressed under its own gravity. Unless gravity is caused by tachyons, they are not the cause of black holes.

Answer 4

tachyons are only theoretical particles that travel faster than light but have never been observed. Black holes are believed to be formed by collapsing stars and are consequently composed of what the star was before collapse