28,777 reputation
462108
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location Princeton, NJ
age 26
visits member for 3 years
seen 7 mins ago

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.


Jul
26
comment Gravitational redshift in a general stationary metric
It's interesting that the formula can give a finite, believable result, even in cases where a stationary observer is unphysical (e.g. inside the ergosphere).
Jul
26
awarded  Yearling
Jul
25
comment How can the orbit of Jupiter's moons be used to calculate the speed of light?
@Javier There is also a relativistic effect like what you mention, but it is negligible here since Earth only orbits at 0.0001c.
Jul
25
comment Is there a limit to telescope resolution?
For a distance of 1400 ly, you would need a telescope of diameter (or at least separation between furthest components) of 1 ly in order to resolve 1 mm print in visible light. It's not clear that building a telescope of size 1 ly is any more difficult than traveling 1400 ly and just asking for a copy of the 452b Gazette.
Jul
25
comment Is there a limit to telescope resolution?
possible duplicate of Is there a limit to the resolving power of a mirror telescope?
Jul
24
reviewed Reopen Inverse Lorentz transformation of four-velocity
Jul
24
reviewed Leave Closed Is time infinite?
Jul
24
comment Is time infinite?
This is somewhere between metaphysics and ontology, both of which are considered philosophy rather than physics in this day and age. Note too that there are some wild leaps in your logic from premises to conclusions. Ideally studying philosophy (as opposed to just thinking about it on your own) would help to train your thinking to be more careful.
Jul
24
reviewed Reopen Definition of event horizon - Gravity around blackholes
Jul
24
reviewed Close Problems 2.3 in Peskin's book
Jul
24
reviewed Close Black Holes' size and emitting
Jul
24
reviewed Leave Open Klein-Gordon equation and wave velocity
Jul
24
comment Klein-Gordon equation and wave velocity
I feel insofar as this is about the Klein-Gordan equation, it is not a duplicate of either option. Of course, if the question is just generally about superluminal wave velocities, it is sort of a duplicate. Note that both phase and group velocities can be superluminal, as neither correspond to anything other than a (possibly prearranged) pattern moving.
Jul
24
reviewed Close Can the Born rule be derived?
Jul
24
reviewed Leave Open A block sliding down a ramp lab (with friction), I keep getting a higher final energy than initial
Jul
24
reviewed Leave Open Do the stellar remnant in a black hole have spatial extent?
Jul
23
reviewed Close How are photons effected by gravity?
Jul
23
reviewed Leave Open Rotation of earth and helicopter
Jul
23
comment Speed of light and current dimensions of the universe
possible duplicate of Why is the observable universe so big?
Jul
23
reviewed Close Is the concept of “spacetime” just a way for us to make peace with what we observe, or does it provide insight into what's “actually” going on?