68 407
Assignments Done
Successfully Done
In December 2018

Answer to Question #63189 in Astronomy | Astrophysics for Jana

Question #63189
Anewstar lights up inside a cloud of atomic hydrogen with a constant number density of n atoms per unit volume. The star emits ionizing photons at a rate of Q¤ photons per unit time. The ionizing photons begin carving out a growing “Str¨omgren sphere” of ionized gas inside the neutral gas . a. At a distance r from the star, what is the timescale ¿ion over which an individual atom gets ionized, if the ionization cross section is ¾ion? b. If the recombination coef cient is ® ´ h¾vi, what is the timescale ¿rec for an individual proton to recombine with an electron?
Expert's answer
Dear Jana, your question requires a lot of work, which neither of our experts is ready to perform for free. We advise you to convert it to a fully qualified order and we will try to help you. Please click the link below to proceed: Submit order

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!


No comments. Be first!

Leave a comment

Ask Your question

Privacy policy Terms and Conditions