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location Princeton, NJ
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I am a graduate student studying astrophysics at Princeton. I received my bachelor's in physics and mathematics from Caltech (2011).


Apr
7
reviewed Leave Open Do Pulsar Stars produce sound?
Apr
7
reviewed Close Derivation of Foucault pendulum
Apr
7
reviewed Close Can we define a induced metric like this?
Apr
7
reviewed Close Can we observe an edge of the universe?
Apr
7
comment Velocity distribution in Plummer's models and others mass distributions
+1 for the nice summary. I'll mention that an optimally chosen range will get rejection sampling to work a bit over 46% of the time in this case, so I don't think it's too bad. It's the approach used by Aarseth, Henon, and Wielen, whose half-page appendix covers the initialization problem quite well.
Apr
7
revised Why do rocket engines have a throat?
motors are not the same as engines; fun fact: unwieldy images can be made smaller by changing the link
Apr
7
comment Integral form of Gauss's law for magnetism from Stokes' theorem?
Huh - I've never heard it called "Gauss's Law for magnetism," and it's one of the most referenced equations in my field.
Apr
6
comment Does the Sun produce audible sound?
While the p-modes are pressure waves just like normal acoustic oscillations, their frequencies are something like 3 mHz, so they don't really correspond to "sound" in the colloquial sense.
Apr
6
comment Do Pulsar Stars produce sound?
The latest installment in our "natural sounds in space" series, which includes supernovae, black holes, and the Sun.
Mar
31
comment How is gravity consistent when you split an object into multiple pieces?
@user49685 For yet another proof, why not go back to original sources: Newton's Principia proves the result for spheres in detail (using the admittedly underdeveloped mathematical language of the day).
Mar
30
awarded  Guru
Mar
24
comment Can we break the Shannon capacity?
I agree this is not so much about physics, but the math underlying signal processing. At the very least, terms like "slot" and "symbol" would need to be better defined here to make sense of the question, whereas they are presumably understood in the signal processing community.
Mar
20
comment The BICEP2 data are evidence of gravitational waves and of inflation. Are they also the first observation that requires quantum gravity?
Sociology note: LIGO alone has spent more than a decade and the better part of a billion dollars looking for gravitational waves. Congress does not spend resources like that without there being some very good evidence already known.
Mar
20
comment Mass exchange between stars
The related Roche limit wiki has some formulas the OP might find useful too.
Mar
19
awarded  Enlightened
Mar
19
comment What's the $\ell$ in the Bicep2 paper mean?
Oops - I was using formulas from my other answer, one of which was wrong, the other of which was misleading.
Mar
19
revised What's the $\ell$ in the Bicep2 paper mean?
fixed error in scale estimate
Mar
19
revised Relation between multipole moment and angular scale of CMB
fixed error in equation
Mar
19
awarded  Nice Answer
Mar
19
comment What do the line segments on the BICEP2 B-mode polarization map mean?
@annav That makes a lot of sense. On the other hand, the OP's source was the first image here, where the caption claims colors are derived from spiraling, not temperature. I'm inclined to believe the caption you found is more accurate, but it's hard to tell, since temperature and polarization will be correlated to some degree.