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Homework Help: Calculate the minimum mass of an X-ray binary

  1. Oct 16, 2015 #1
    1. The problem statement, all variables and given/known data
    (3) X-ray binary.png

    2. Relevant equations

    3. The attempt at a solution
    I don't know how to start part A and part B depends on part A. How does one calculate a lower mass limit? Is it the lower limit of an integral? I also don't understand how there can be two periods (one at 0.714 seconds and the other at 3.89 days). Do I use simple harmonic motion? My teacher never covered anything this complicated before. Thank you for your time.
  2. jcsd
  3. Oct 16, 2015 #2
    How is this advanced? This is my introductory astronomy class, and it's very frustrating.
  4. Oct 17, 2015 #3
    Thanks everyone!
  5. Oct 18, 2015 #4
    Why are there no responses?
  6. Oct 18, 2015 #5


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    Staff Emeritus
    Science Advisor
    Homework Helper

    Not everybody on this site is a budding astronomer. :cry:

    Your OP doesn't indicate any relevant equations. Are you sure that's the case with this problem?
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