Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A new model for nulling and moding in radio pulsars   Single pulse behaviour of radio pulsars is usually interpreted in terms of
the ExB drift of a radio beam. It is shown that antisymmetric arrangement of
the radio-bright zones can produce several types of observed single pulse
phenomena: the half-cycle jump in subpulse modulation phase, left-right-middle
subpulse sequence and switching between the core-dominated and cone-dominated
pulsation modes. The geometry can also produce nulling, both sporadic and
intermodal. The model implies that the radio-quiet intervals that separate the
main pulse and interpulse in PSR B0826-34 correspond to azimuthal breaks in the
radio beam, instead of breaks in colatitude.

5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph