Astrophysics/Experts
| Expert | Average Ratings | Expertise |
|---|---|---|
Philip A. StahlU.S.
Available
|
I specialize in stellar and solar astrophysics. Can answer any questions pertaining to these areas, the spectroscopic analysis of stars – as well as the magneto-hydrodynamics of sunspots and solar flares. Sorry – No homework problems done or research projects! I will provide hints on solutions. | |
Steve NelsonU.S.
Available
|
Fusion, solar flares, cosmic rays, radiation in space, and stellar physics questions. Generally, nuclear-related astrophysics, but I can usually point you in the right direction if it's not nuclear-related or if it's nuclear but not astrophysics. |
Recent Answers
2009-11-05 Follow-up solution:
Congrats! You have it correct! The key to the solution was in seeing that, after you obtain the distance (d) to the system via the distance modulus, then you need to obtain the parallax angle applicable
2009-11-03 Binary star problem:
Hello, This looks like a fairly basic HW problem, so I will just get you oriented to solving it yourself. If you need more help after my hints, you can get back to me. First, if one of the stars
2009-11-03 Relative and Absolute Time:
Hello, Okay, you have really two separate issues and I don't want to get them confused - so will stick with just the question to do with the expansion of the universe. Basically, there are two theories
2009-10-31 astrophysics/ black hole theory:
Hello, There are several problems with your theory. Let's look at it from the aspect of stellar composition first. The fractional elemental abundances for a given star (of undetermined mass) can
2009-10-23 Electragnetic fields:
You mean electromagnetic. Electromagnetic fields around people are 1) extremely weak and 2) extremely low frequency. They don't emit light or anything which could be perceived as light. If someone perceives
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