Question 4 (1 point) Quasars can be 1000
times more luminous
than a galaxy. The absolute magnitude of such a luminous quasar would be about M = -28.5. If the
black hole in the center
of our galaxy became a quasar, what would the apparent magnitude of the galactic core
be?
a. -13.9 b.19 c. 0 d.-4.6 e.8.5
We need to use the equation: m – M = -5 +
5 log d(pc)
d
= 8500 pc, M = -28.5, so: m + 28.5 = -5 + 19.6
m
= -13.9