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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).


1d
comment Why does my eardrum feel strange inside a car?
Any answers here can only be wild guesses, because there isn't enough information to go on. Did this only happen while the car was moving? How fast? What was the terrain? The weather? Were you driving through a tornado? Did you sneeze particularly hard? Did the feeling go away upon swallowing? Were any windows open?
2d
comment Wouldn't angular momentum of a binary star system decrease?
The OP seems to have had a different question in mind than the one originally asked, but +1 for the answer to what was originally written.
Apr
12
comment How is the Plane of the Solar System oriented to the Sun's motion through space?
@JohnRennie Well there is at least one other obvious interpretation, as has partially been answered already: physics.stackexchange.com/questions/2582/the-galactic-plane
Apr
8
comment Where can I find the list of the planetary motion equations?
Hi there, and welcome to Physics Stackexchange! Just so you know, we implement Latex-style math formatting on this site. (Detailed guide here)
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
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
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
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
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.
Mar
19
comment Could an attachment to cell-phones limit or neutralize electro-magnetic radiation?
Yep - I figure as long as the spacing is < ~1 ft. it will be a good Faraday cage for ~1 GHz signals, so it seems reasonable. Anecdotally, my phone never worked well indoors in California, even when reception was great outside.
Mar
19
comment What do the line segments on the BICEP2 B-mode polarization map mean?
@EmilioPisanty Yeah, I admit I didn't look up their exact coloring scheme - I just figured they'd do something similar to what I would have done.
Mar
18
comment If the universe didn't expand faster than light, would our nights brighter like day?
There is a hint of a well-defined question here, but you have to ignore red herrings. The speed of light has nothing to do with Olbers, or with horizons, or with really anything at all when it comes to the expansion of the universe. The crux of Olbers is the finite age of the universe. Moreover, cosmological redshift changes the energy of light, but it does not change whether or not your line of sight terminates on the surface of a star, so it is irrelevant here.
Mar
17
comment What do the line segments on the BICEP2 B-mode polarization map mean?
I added a bit more to address that. The color map looks like it was defined to be the magnitude of the "z"-component of the curl of the field shown.
Mar
15
comment All possible electromagnetic Lorentz invariants that can be built into the electromagnetic Lagrangian?
One wonders if there are people doing $f(F)$ E&M in the same way there are people doing $f(R)$ gravity.
Mar
14
comment What is $T_{\mu\nu}T_{\mu\nu}$ for the electromagnetic stress-energy tensor?
Something coordinate dependent, that's for sure. Also, would this be related to your other question?