%0 Journal Article %1 kunertbajraszewska2020caltechnrao %A Kunert-Bajraszewska, Magdalena %A Wolowska, Aleksandra %A Mooley, Kunal %A Kharb, Preeti %A Hallinan, Gregg %D 2020 %K AGN Radio_loud Stripe82 %T Caltech-NRAO Stripe 82 Survey (CNSS). IV. The Birth of Radio-loud Quasar 013815+00 %U http://arxiv.org/abs/2007.01590 %X It is believed that the gas accretion onto the supermassive black holes (SMBHs) is the main process of powering its luminous emission, which occurs in optical, UV and X-ray regimes and less frequently in radio waves. The observational fact that only a few percent of quasars are radio-loud is still an unresolved issue concerning the understanding of the active galactic nucleus (AGN) population. Here we present a detection of a rapid transition from the radio-quiet to the radio-loud mode in quasar 013815+00 (z=0.94) which coincides with changes of its UV-optical continuum and the low ionization MgII broadline. We interpret this as an enhancement of accretion onto a central black hole of mass about 10^9 solar masses. As a consequence a new radio-loud AGN was born. Its spectral and morphological properties indicate that it went through the short gigahertz-peaked spectrum (GPS) phase at the beginning of its activity and has now stabilized its flux density at the level of a few mJy. The radio morphology of 013815+00 is very compact and we predict that with such short-term jet activity its development will be very slow. The observed luminosity changes of the accretion disk are shorter than the lifetime of the new radio phase in 013815+00.

@article{kunertbajraszewska2020caltechnrao, abstract = {It is believed that the gas accretion onto the supermassive black holes (SMBHs) is the main process of powering its luminous emission, which occurs in optical, UV and X-ray regimes and less frequently in radio waves. The observational fact that only a few percent of quasars are radio-loud is still an unresolved issue concerning the understanding of the active galactic nucleus (AGN) population. Here we present a detection of a rapid transition from the radio-quiet to the radio-loud mode in quasar 013815+00 (z=0.94) which coincides with changes of its UV-optical continuum and the low ionization MgII broadline. We interpret this as an enhancement of accretion onto a central black hole of mass about 10^9 solar masses. As a consequence a new radio-loud AGN was born. Its spectral and morphological properties indicate that it went through the short gigahertz-peaked spectrum (GPS) phase at the beginning of its activity and has now stabilized its flux density at the level of a few mJy. The radio morphology of 013815+00 is very compact and we predict that with such short-term jet activity its development will be very slow. The observed luminosity changes of the accretion disk are shorter than the lifetime of the new radio phase in 013815+00.}, added-at = {2020-07-06T08:54:05.000+0200}, author = {Kunert-Bajraszewska, Magdalena and Wolowska, Aleksandra and Mooley, Kunal and Kharb, Preeti and Hallinan, Gregg}, biburl = {https://www.bibsonomy.org/bibtex/28b676275c5a9e6fabce1935c8f3605d7/kiwasawa}, description = {Caltech-NRAO Stripe 82 Survey (CNSS). IV. The Birth of Radio-loud Quasar 013815 00}, interhash = {987a38e2bbdccb1efed95ed179a9bc4f}, intrahash = {8b676275c5a9e6fabce1935c8f3605d7}, keywords = {AGN Radio_loud Stripe82}, note = {cite arxiv:2007.01590Comment: 14 pages, 5 figures, 1 table, accepted to ApJ}, timestamp = {2020-07-06T08:54:05.000+0200}, title = {Caltech-NRAO Stripe 82 Survey (CNSS). IV. The Birth of Radio-loud Quasar 013815+00}, url = {http://arxiv.org/abs/2007.01590}, year = 2020 }