Why are supermassive black holes believed to be located at the centre of many galaxies?
A) because the rotation curve of the galaxy indicates that 90% of the galaxy is dark matter
B) because the orbital motion of material near the centre is very fast and indicates a very massive core
C) because the shape of the bulge in all spiral galaxies can be supported only by a supermassive black hole
D) because the spiral structure requires a black hole to maintain the spiral arms
Correct Answer:
Verified
Q10: Mathematical models indicate that one type of
Q42: Which of the following indicates that quasars
Q51: Why were quasars so mysterious when first
Q52: What kind of radiation is produced by
Q55: If the redshifts of quasars arise from
Q66: What inflates the lobes of radio emission
Q69: The hydrogen Balmer line Hβ has a
Q72: Which of the following is a feature
Q74: What would happen to the Sun if
Q75: Which type of active galaxy can be
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents