Supernova explosion near a black hole

vinayjain

It might be stupid to think this way but it came to my mind and I wasn't able to find anything related to this on internet so please help me understanding this thing..........

Say if we have a massive star and a black hole nearby and the massive star completes its life cycle, it will end up with a supernova explosion.

So what will be the effect of the energy librated and shockwave generated by the explosion on the black hole...............does black hole will be teared apart in this explosion.

Please reply

*DaveC426913*

Quote by vinayjain

So what will be the effect of the energy librated and shockwave generated by the explosion on the black hole...............does black hole will be teared apart in this explosion.

No. The the gas and energy expelled from the explosion in the direction of the BH will form an accretion disc around the black and will fall in to be absorbed, causing it to grow in mass.

No external force will destroy a black hole.

vinayjain

Quote by DaveC426913

No. The the gas and energy expelled from the explosion in the direction of the BH will form an accretion disc around the black and will fall in to be absorbed, causing it to grow in mass.

No external force will destroy a black hole.

and what about the shockwave............

Thanks

Drakkith

Quote by vinayjain

and what about the shockwave............

Thanks

From wikipedia: A shock wave (also called shock front or simply "shock") is a type of propagating disturbance. Like an ordinary wave, it carries energy and can propagate through a medium (solid, liquid, gas or plasma) or in some cases in the absence of a material medium, through a field such as the electromagnetic field

http://en.wikipedia.org/wiki/Shock_wave

Chronos

Shock waves are not much of a factor in the vacuum of space. You have occasional highly energetic collisions between widely separated particles, but, little more. Kinematics play a much larger role in denser mediums. Plasma effects dominate in space.

*DaveC426913*

Quote by vinayjain

and what about the shockwave............

Thanks

The point is that a BH is not a simple physical object with a physical structure. The event horizon itself is not a physical boundary, just a virtual boundary - a mathematical surface where the escape velocity exceeds the speed of light. The gravitational forces within this boundary are far stronger than any amount of kinetic energy a mere supernova can throw at it. This becomes apparent when you realize that, even in principle, the matter from the supernova will never get close to the speed of light. Matter only falls in to a BH, never out.

vinayjain

Quote by DaveC426913

The point is that a BH is not a simple physical object with a physical structure. The event horizon itself is not a physical boundary, just a virtual boundary - a mathematical surface where the escape velocity exceeds the speed of light. The gravitational forces within this boundary are far stronger than any amount of kinetic energy a mere supernova can throw at it. This becomes apparent when you realize that, even in principle, the matter from the supernova will never get close to the speed of light. Matter only falls in to a BH, never out.

Well Thank You for such a beautiful reply, it makes my doubt clear..........

and Thank You Drakkith and Chronos for such replies

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Chronos Recognitions: Gold Member Science Advisor	Shock waves are not much of a factor in the vacuum of space. You have occasional highly energetic collisions between widely separated particles, but, little more. Kinematics play a much larger role in denser mediums. Plasma effects dominate in space.