Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Can lightning be a noise source for a spherical gravitational wave
  antenna?   The detection of gravitational waves is a very active research field at the
moment. In Brazil the gravitational wave detector is called Mario SCHENBERG.
Due to its high sensitivity it is necessary to model mathematically all known
noise sources so that digital filters can be developed that maximize the
signal-to-noise ratio. One of the noise sources that must be considered are the
disturbances caused by electromagnetic pulses due to lightning close to the
experiment. Such disturbances may influence the vibrations of the antenna's
normal modes and mask possible gravitational wave signals. In this work we
model the interaction between lightning and SCHENBERG antenna and calculate the
intensity of the noise due to a close lightning stroke in the detected signal.
We find that the noise generated does not disturb the experiment significantly.

27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
2
The categories of this paper are: math