Quasar

Question 1

Quasar

Answer 1

is an active galactic nucleus – a supermassive black hole surrounded by a disc of
matter which, as it falls into the black hole, causes jets of radiation to be emitted from the poles.

Question 2

Quasar 3 features

Answer 2

● Extremely large optical red-shifts
● Very powerful light output
● Their size is not much bigger than a star

Question 3

How do you estimate the power output of a quasar

Answer 3

using the inverse square law for intensity by using the amount of doppler shift experienced by the quasar to find their distance from Earth.

Question 4

What are quasars thought to be

Answer 4

the most distant measurable objects in the known universe

Question 5

What does the inverse square law show about quasars

Answer 5

• extremely powerful
• can have the same energy output as several galaxies.