Top Posters
Since Sunday
z
4
n
4
t
4
k
3
x
3
r
3
m
3
j
3
c
3
l
3
e
3
s
2
Home Q & A Board Science-Related Homework Help Physics Astronomy
New Topic  
tkd_fighter tkd_fighter
wrote...
Go to Answer
Posts: 141
Rep: 0 0
3 months ago

How do we know that the compact object in some X-ray binaries must be a black hole?



▸

X-rays of high enough energy can be emitted only by a black hole.



▸

The orbital period of the binary requires the compact object to have more than 1.4 solar masses.



▸

The orbital period of the binary requires the compact object to have more than 3 solar masses.



▸

The compact object does not produce any X-rays.

Textbook 
ASTRO

ASTRO


Edition: 3rd
Authors:
Read 36 times
1 Reply
Replies
Answer verified by a subject expert
aliwchamounaliwchamoun
wrote...
#1
Posts: 128
Rep: 0 0
3 months ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

tkd_fighter Author
wrote...

3 months ago
Good timing, thanks!
Marcie D
wrote...

Yesterday
Thanks
fxinternational
wrote...

2 hours ago
Helped a lot
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  577 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 339
  
 1071
  
 302
Your Opinion
Which industry do you think artificial intelligence (AI) will impact the most?
Votes: 484
Previous poll results: Which country would you like to visit for its food?