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SDSS J013127.34$-$032100.1: A newly discovered radio-loud quasar at $z=5.18$ with extremely high luminosity

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Title: SDSS J013127.34$-$032100.1: A newly discovered radio-loud quasar at $z=5.18$ with extremely high luminosity
Authors: Yi, Wei-Min, Wang, Feige, Wu, Xue-Bing, Yang, Jinyi, Bai, Jin-Ming, Fan, Xiaohui, Brandt, William N., Ho, Luis C., Zuo, Wenwen, Kim, Minjin, Wang, Ran, Yang, Qian, Zhang, Ju-jia, Wang, Fang, Wang, Jian-Guo, Ai, Yanli, Fan, Yu-Feng, Chang, Liang, Wang, Chuan-Jun, Lun, Bao-Li, Xin, Yu-Xin
Publication Year: 2014
Collection: Astrophysics
Subject Terms: Astrophysics - Astrophysics of Galaxies
More Details: Only very few z>5 quasars discovered to date are radio-loud, with a radio-to-optical flux ratio (radio-loudness parameter) higher than 10. Here we report the discovery of an optically luminous radio-loud quasar, SDSS J013127.34-032100.1 (J0131-0321 in short), at z=5.18+-0.01 using the Lijiang 2.4m and Magellan telescopes. J0131-0321 has a spectral energy distribution consistent with that of radio-loud quasars. With an i-band magnitude of 18.47 and radio flux density of 33 mJy, its radio-loudness parameter is ~100. The optical and near-infrared spectra taken by Magellan enable us to estimate its bolometric luminosity to be L_bol ~ 1.1E48 erg/s, approximately 4.5 times greater than that of the most distant quasar known to date. The black hole mass of J0131-0321 is estimated to be 2.7E9 solar masses, with an uncertainty up to 0.4 dex. Detailed physical properties of this high-redshift, radio-loud, potentially super-Eddington quasar can be probed in the future with more dedicated and intensive follow-up observations using multi-wavelength facilities.
Comment: 5 pages, 3 figures, accepted to ApJL
Document Type: Working Paper
DOI: 10.1088/2041-8205/795/2/L29
Access URL: http://arxiv.org/abs/1410.2689
Accession Number: edsarx.1410.2689
Database: arXiv
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  Data: SDSS J013127.34$-$032100.1: A newly discovered radio-loud quasar at $z=5.18$ with extremely high luminosity
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  Data: <searchLink fieldCode="AR" term="%22Yi%2C+Wei-Min%22">Yi, Wei-Min</searchLink><br /><searchLink fieldCode="AR" term="%22Wang%2C+Feige%22">Wang, Feige</searchLink><br /><searchLink fieldCode="AR" term="%22Wu%2C+Xue-Bing%22">Wu, Xue-Bing</searchLink><br /><searchLink fieldCode="AR" term="%22Yang%2C+Jinyi%22">Yang, Jinyi</searchLink><br /><searchLink fieldCode="AR" term="%22Bai%2C+Jin-Ming%22">Bai, Jin-Ming</searchLink><br /><searchLink fieldCode="AR" term="%22Fan%2C+Xiaohui%22">Fan, Xiaohui</searchLink><br /><searchLink fieldCode="AR" term="%22Brandt%2C+William+N%2E%22">Brandt, William N.</searchLink><br /><searchLink fieldCode="AR" term="%22Ho%2C+Luis+C%2E%22">Ho, Luis C.</searchLink><br /><searchLink fieldCode="AR" term="%22Zuo%2C+Wenwen%22">Zuo, Wenwen</searchLink><br /><searchLink fieldCode="AR" term="%22Kim%2C+Minjin%22">Kim, Minjin</searchLink><br /><searchLink fieldCode="AR" term="%22Wang%2C+Ran%22">Wang, Ran</searchLink><br /><searchLink fieldCode="AR" term="%22Yang%2C+Qian%22">Yang, Qian</searchLink><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Ju-jia%22">Zhang, Ju-jia</searchLink><br /><searchLink fieldCode="AR" term="%22Wang%2C+Fang%22">Wang, Fang</searchLink><br /><searchLink fieldCode="AR" term="%22Wang%2C+Jian-Guo%22">Wang, Jian-Guo</searchLink><br /><searchLink fieldCode="AR" term="%22Ai%2C+Yanli%22">Ai, Yanli</searchLink><br /><searchLink fieldCode="AR" term="%22Fan%2C+Yu-Feng%22">Fan, Yu-Feng</searchLink><br /><searchLink fieldCode="AR" term="%22Chang%2C+Liang%22">Chang, Liang</searchLink><br /><searchLink fieldCode="AR" term="%22Wang%2C+Chuan-Jun%22">Wang, Chuan-Jun</searchLink><br /><searchLink fieldCode="AR" term="%22Lun%2C+Bao-Li%22">Lun, Bao-Li</searchLink><br /><searchLink fieldCode="AR" term="%22Xin%2C+Yu-Xin%22">Xin, Yu-Xin</searchLink>
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  Data: Only very few z>5 quasars discovered to date are radio-loud, with a radio-to-optical flux ratio (radio-loudness parameter) higher than 10. Here we report the discovery of an optically luminous radio-loud quasar, SDSS J013127.34-032100.1 (J0131-0321 in short), at z=5.18+-0.01 using the Lijiang 2.4m and Magellan telescopes. J0131-0321 has a spectral energy distribution consistent with that of radio-loud quasars. With an i-band magnitude of 18.47 and radio flux density of 33 mJy, its radio-loudness parameter is ~100. The optical and near-infrared spectra taken by Magellan enable us to estimate its bolometric luminosity to be L_bol ~ 1.1E48 erg/s, approximately 4.5 times greater than that of the most distant quasar known to date. The black hole mass of J0131-0321 is estimated to be 2.7E9 solar masses, with an uncertainty up to 0.4 dex. Detailed physical properties of this high-redshift, radio-loud, potentially super-Eddington quasar can be probed in the future with more dedicated and intensive follow-up observations using multi-wavelength facilities.<br />Comment: 5 pages, 3 figures, accepted to ApJL
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