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Author Question: What is some of the evidence that Cygnus X-1 is a black hole? What will be an ideal ... (Read 18 times)

bobbie

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on: Jul 27, 2018
What is some of the evidence that Cygnus X-1 is a black hole?
 
  What will be an ideal response?

Question 2

Most stars in the Milky Way's halo are
 
  A) very old.
  B) found inside molecular clouds.
  C) very young.
  D) blue or white in color.


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Jadwiga9

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Reply #1 on: Jul 27, 2018
Answer to Question 1

The mass of the invisible object, based on Kepler's Laws, is about 10 solar masses, well over the 3 solar mass limit on a neutron star. The electromagnetic radiation varies over milliseconds, indicating that the area emitting the radiation is comparable in size to a football field. The temperature indicated by the x-ray emission indicates millions of kelvins, consistent with an accretion disk around a black hole.

Answer to Question 2

A


bobbie

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Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

T4T

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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