Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On Radiation Pressure and the Poynting-Robertson Effect for Fluffy Dust
  Particles   Equation of motion for real dust particle under the action of electromagnetic
radiation is more general than equation of motion corresponding to standardly
used Poynting-Robertson effect (P-R effect). As a consequence, orbital
evolution of particles may significantly differ from that corresponding to the
P-R effect. The paper discusses recently published (Icarus, June 2002)
derivation of equation of motion, which is in contradiction with known
relativistically covariant formulation. The ``new'' derivation does not respect
fundamental physical laws (law of conservation of energy, law of conservation
of momentum) which must hold in any frame of reference. Application of the
derived ``general'' equation of motion to the special case treated by Einstein
in 1905 yields result which is not consistent with Einstein's result. Correct
solution is presented.

23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys