Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hosts and Alignment Effect in 0.5 < z < 1 radio sources   R- and I- band images with good seeing at the NOT of the hosts of a sample of
7C radio galaxies at z ~ 0.7 (with mean radio flux 20 times fainter than the 3C
sample) show some evidence of radio-optical alignment. A quantitative analysis
of the alignment in this sample and in a corresponding 3C sample from HST
archival data indicates that the percentage of aligned flux may be lower and of
smaller spatial scale in the faint radio sample. Studies of the aligned
material in z ~ 1 3C source hosts indicate that the quasar extensions also show
some aligned flux, though much of it is due to optical synchrotron radiation.

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The categories of this paper are: comp-gas
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The categories of this paper are: econ
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
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The categories of this paper are: eess
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
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The categories of this paper are: nucl-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: chem-ph
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The categories of this paper are: nlin
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-ex
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The categories of this paper are: patt-sol