Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interplanetary radio type II and type IV bursts as indicators of
  propagating solar transients   Recent studies of interplanetary radio type II bursts and their source
locations are reviewed. As these bursts are due to propagating shock waves,
driven by coronal mass ejections, they can be followed to near-Earth distances
and can be used to predict the arrival times of geo-effective disturbances.
Radio type IV bursts, on the other hand, are usually due to moving magnetic
structures in the low corona and trapped particles form at least part of the
emission. The observed directivity of type IV emission may also be used for
space weather purposes.

26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph