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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).

My primary interest is in general relativistic magnetohydrodynamics simulations of black hole accretion.


Dec
12
comment How would night sky look like if the speed of light was infinite?
To everyone voting to close as non-mainstream, I remind that this is exactly the cosmology of Newton's time.
Dec
12
answered Why is stress a tensor quantity?
Dec
12
comment Difference between astronomy and astrophysics
See also the tag wikis for astronomy and astrophysics. (I personally edited much of that info in, but I think they do a fair job of representing the field's opinions. But really the terms are often interchangeable.)
Dec
12
comment field solutions for covariant derivative of vector field constrained to zero
Interesting question. Well $\nabla_\mu A_\nu$ is halfway to the left-hand side of the Killing equation, so any solutions are trivially Killing fields. It also looks like a tensor that comes up in some forms of the geodesic deviation equation. And if $n$ is geodesic and taken to be the unit normal vector field of a family of hypersurfaces, then $\nabla_\mu n_\nu$ comprise the second fundamental forms of those surfaces. I wish I could say something more definitive.
Dec
12
reviewed Reopen Electromagnetic mass of a continuous charge distribution
Dec
12
reviewed Reopen How far away must a galaxy be for its light never to reach us due to the expansion of the universe?
Dec
12
reviewed Reopen Why is electric charge the conserved quantity corresponding to global $U(1)$ symmetry?
Dec
12
reviewed Leave Open How is wind created?
Dec
12
answered Heisenberg Hamiltonian for spin-spin system
Dec
12
reviewed Leave Open Heisenberg Hamiltonian for spin-spin system
Dec
12
reviewed Close How would gravitons be detected?
Dec
12
comment Plants and Quantum Mechanics!
@TAbraham Insisting on path integrals seems rather... strange. Path integrals are a tool for calculating probabilities of various processes happening, nothing more, and they get the same results as any other method. If you are thinking they integrate over the path the photon takes... then I fear there is a more fundamental misunderstanding about what path integrals are. Note that path integrals are advanced QM -- many universities don't even teach them to undergrads.
Dec
12
reviewed Approve Plants and Quantum Mechanics!
Dec
11
reviewed Leave Open When optically pumping a lasing gain medium with another laser, does Stimulated, or Spontaneous emission dominate?
Dec
11
reviewed Close Proving susceptibility in Lorentz Model satisy Kramers-Kronig relations
Dec
11
comment How far away must a galaxy be for its light never to reach us due to the expansion of the universe?
(And since pretty much every astro paper is open access, at least after 1 year, there's no reason not to link to the nicely polished final version rather than the oft poorly formatted and error-prone preprint.)
Dec
11
comment How far away must a galaxy be for its light never to reach us due to the expansion of the universe?
It's probably good practice to link to arxiv abstract pages rather than direct to PDFs -- this way people don't accidentally download large files, and there is more readily available metadata. Actually, in astro, links to adsabs.harvard.edu are just as good (see Gott et al. and Davis & Lineweaver), especially since they link to not only the arxiv versions but also the final publications, e.g. here
Dec
11
comment How far away must a galaxy be for its light never to reach us due to the expansion of the universe?
You know, if this question gets closed as duplicate, you should consider migrating (deleting and reposting) to the duplicate (or just posting an answer there, not sure how frowned-upon posting dupe answers is), since this is the correct answer, unlike much of what's posted on the other thread.
Dec
10
revised What is the definition of density in a relativistic context?
edited tags
Dec
10
answered What is the definition of density in a relativistic context?