New radio-loud high-redshift quasar discovered arxiv
INAF - Osservatorio Astronomico di Brera, DiSAT, Università degli Studi dell'Insubria, Dipartimento di Fisica e Astronomia, Università degli Studi di Bologna, INAF - Istituto di Radioastronomia, INAF - Fundación Galileo Galilei, INAF - Istituto di Astrofisica Spaziale e Fisica Cosmica)We present the discovery of PSO J191.05696$+$86.43172 , a new powerful radio-loud quasar in the early Universe . We discovered it by cross-matching the NRAO VLA Sky Survey radio catalog at 1.
The observed radio spectrum of PSO J191$+$86 shows a possible turnover around $\sim$1 GHz , making it a Gigahertz-Peaked Spectrum source. However, variability could affect the real shape of the radio spectrum, since the data in hand have been taken $\sim$25 years apart. By assuming a peak of the observed radio spectrum between 1 and 2 GHz we found a linear size of the source of $\sim$10-30 pc and a corresponding kinetic age of 150-460 yr. This would make PSO J191$+$86 a newly born radio source.
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