Does apparent increase in mass due to energy also result in increase in gravitational mass?

Question

When a particle is energized, say in an accelerator, increasing its apparent mass (m=E/c^2), does gravitational mass also increase or does it remain the same as non energized mass? If gravitational mass increases, can it ever become so massive that it forms a mini black hole that grows and swallow everything in its path?

It seems unlikely since outer edges of the universe has high energy (moving away from us at high speed), yet their gravitational pull is the same as if they are not moving or do they have higher apparent gravity? Is gravity dependent on mass, and not mass energy? If so, then mass and energy are not interchangeable; in that case, is gravity is destroyed when mass turns to energy?

Answer 1

"...When a particle is energized, say in an accelerator, increasing its apparent mass (m=E/c^2), does gravitational mass also increase or does it remain the same as non energized mass?..."

The particle, or any other high-velocity body, does not actually become more gravitationally massive in its reference frame. The increased mass you mention is what's called 'relativistic mass' and is only different to someone observing from a different reference frame.

"...since outer edges of the universe has high energy (moving away from us at high speed), yet their gravitational pull is the same as if they are not moving..."

Here it seems that you're making the erroneous assumption that mass itself is moving at greater and greater speed through space proportionate to its distance from us. That's not true because its *space* itself that's experiencing higher and higher velocities. Even if mass within that space should attain relativistic velocities any mass increase would again follow the dictates of relativity I mentioned in the first paragraph.

There are vast regions of our universe where, relative to us, space is moving away faster than the speed of light. Therefore, we can never get back any kind of information from those regions.