Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Special Shapes for Optimal Phenomenological Approximations of
  Astronomical Signals   We discuss different methods for phenomenological approximations of signals
with (generally) irregularly spaced arguments. Such signals may be classified
as periodic, multi-periodic, quasi-periodic (cyclic), burst-type and
flicker-type (see e.g. a review by Andronov (2003)). In this talk, we
concentrate on (nearly) periodic light curves of the Algol-type eclipsing
variables. Having no possibility to determine all physical parameters for all
stars and to make physical modeling, the phenomenological fits are used. This
is especially important for discovery papers, when there are often available
only mono-chromatic photometric data, without estimates of temperature and
orbital velocities of the components.

21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex