Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Blazars spectral properties at 74 MHz   Blazars are the most extreme class of active galactic nuclei (AGNs). Despite
a previous investigation at 102 MHz for a small sample of BL Lacs and our
recent analysis of blazars detected in the Westerbork Northern Sky Survey
(WENSS), a systematic study of the blazar spectral properties at frequencies
below 100 MHz has been never carried out. In this paper, we present the first
analysis of the radio spectral behavior of blazars based on the recent Very
Large Array Low-Frequency Sky Survey (VLSS) at 74 MHz. We search for blazar
counterparts in the VLSS catalog confirming that they are detected at 74 MHz.
We then show that blazars present radio flat spectra {(i.e., radio spectral
indices ~0.5)} when evaluated also about an order of magnitude in frequency
lower than previous analyses. Finally, we discuss the implications of our
findings in the context of the blazars - radio galaxies connection since the
low frequency radio data provide a new diagnostic tool to verify the
expectations of the unification scenario for radio-loud active galaxies.

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The categories of this paper are: math-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: bayes-an
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The categories of this paper are: math
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-th
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: chem-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: funct-an
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The categories of this paper are: hep-lat