Top Posters
Since Sunday
e
7
t
7
f
6
e
6
c
6
J
6
e
6
j
6
F
6
a
6
u
6
o
6
Home Q & A Board Science-Related Homework Help Physics
New Topic  
killian killian
wrote...
Go to Answer
Silver Member
Posts: 6024
Rep: 33 0
10 years ago
All of the following observations are real. Which one does not support the theory that active galactic nuclei are powered by accretion disks around massive black holes?
A) The most luminous active galactic nuclei have huge redshifts.
B) X-ray emission from active galactic nuclei can vary significantly in times as short as a few days.
C) The total luminosity of an active galactic nucleus can be as high as about 10 billion times that of the Sun.
D) Spectra of active galactic nuclei show that clouds of gas are orbiting a central object at very high speed.
Read 360 times
2 Replies
Smiling Face with Open Mouth
Replies
Answer accepted by topic starter
padrepadre
wrote...
#1
Staff Member
Educator
Top Poster
Posts: 21608
Rep: 4541 17
10 years ago
Sign in or Sign up in seconds to unlock everything for free
1
Mastering in Nutritional Biology
Tralalalala Slight Smile

Related Topics

killian Author
wrote...
#2
Silver Member
10 years ago
Thank you sir
Smiling Face with Open Mouth
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1024 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 149
  
 178
  
 277
Your Opinion
What's your favorite math subject?
Votes: 314
Previous poll results: Which 'study break' activity do you find most distracting?