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Radio cores in blazars

T. Venturi·D. Dallacasa·S. Torri·F. Mantovani
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Abstract

We present results and first epoch parsec-scale images from a monitoring program on five $γ$--ray loud blazars selected on the basis of their total flux density variability. We observed 0048$-$097, 0235+164, 0954+658, 1510$-$089 and 1749+096 with the Very Long Baseline Array simultaneously at 8.4 GHz and 22 GHz. Comparison between our high quality images and previous results from the literature suggest that 0954+658 and 1510$-$089 are superluminal radio sources, with a Lorentz factor $γ$ of the order of $\sim 2 - 3$.

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T. Venturi, D. Dallacasa, S. Torri, F. Mantovani. 2000-09-21. Radio cores in blazars. https://arxiv.org/abs/astro-ph/0009352

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