Hello.
I would like to draw (sample) several random vectors x from a n-dimensional multivariate normal distribution.
For this purpose I want to use C++ and the GNU Scientific Library function gsl_ran_multivariate_gaussian ...
Pfff, same order of magnitude...
Okay, that was misleading. The infalling observer was thought to use his rocket to stop before crossing the schwarzschild-radius.
I think both observers are in freefall radially downward.
But was does "the event horizon is observer dependent" mean for freely...
A last question to clarify:
Is there the same infinite redshift surface for all observers, located at the schwarzschild radius?
What an observer far away sees is objects that are falling in getting closer and closer to the schwarzschild radius, without ever reaching it, right?
So the same...
I have 7 written summaries of oral exams, written by the examined students und collected by the physics students' union.
The questions asked by the professor and the answers given by the examinees are only as accurate as remembered by the examinee and
not written very detailed.
The question is...
Hello.
In oral exams my professor likes to ask if Alice and Bob can communicate, if Alice ist just above the event horizon of a schwarzschild black hole and Bob ist just below.
He wants to hear:
Communication is possible, because the event horizon is observer dependent. Only an observer...
I now study general relativity and have a few questions regarding the mathematical formulation:
1) What ist the relation between an connection and a covariant derivative?
Can you explain the exact difference?
2) One a lorentzian manifold, what ist the relation between the...