Understanding Supermassive Black Holes

What is the main mystery surrounding supermassive black holes?

• Their color

• Their temperature

• Their size given the universe's age

• Their location in the universe

What was unusual about the supermassive black hole found in an isolated galaxy?

• It was located in a dense cluster

• It was smaller than expected

• It was not a black hole

• It was found in a relatively empty region

How can black holes grow significantly in size?

• By consuming other black holes

• By shrinking over time

• By absorbing light

• By emitting radiation

What did the LIGO experiment detect that provided evidence for black hole mergers?

• Sound waves

• Light waves

• Gravitational waves

• Magnetic fields

What happens to the mass of black holes during a merger?

• It remains the same

• It doubles

• It decreases

• Some mass is converted to energy

How much energy was released during the black hole collision detected by LIGO?

• Equal to a supernova explosion

• None of the above

• More than all stars in the visible universe emit in the same time

• Less than the sun emits in a second

What is the significance of the energy released during black hole mergers?

• It is negligible

• It is the most energy released since the Big Bang

• It has no impact on the universe

• It is less than a supernova

What is a 'hot dog' galaxy?

• A galaxy with a lot of stars

• A galaxy that is very cold

• A galaxy with a supermassive black hole obscured by dust

• A galaxy with no black holes

What role do 'hot dog' galaxies play in the growth of supermassive black holes?

• They provide new material for black holes to consume

• They have no effect on black holes

• They prevent black holes from growing

• They shrink black holes

What is the future of the supermassive black hole at the center of our galaxy?

• It will remain the same size

• It will disappear

• It will grow by consuming its neighbor

• It will shrink over time