Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spectrum for the electric dipole which nonradially falling into a black
  hole   The electromagnetic bremsstrahlung spectrum for the dipole which falling by a
spiral orbit into the Schwarzschild black hole was found. The characteristic
features in this electromagnetic spectrum can be used for determine of the
black hole mass by the new way. This new way (if implemented) provides higher
accuracy in determining of the black hole mass. Also these features in the
spectrum can be used for determine of the certain characteristics in the black
hole magnetosphere or in the accretion disk characteristics around the black
hole. It is also shown that the asymptotic behavior of this spectrum (at high
frequencies) is practically independent from the impact parameter of the
falling dipole.

18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an