TY - JOUR
T1 - VLBI observation of the newly discovered z = 5.18 quasar SDSS J0131-0321
AU - Gabányi, K. E.
AU - Cseh, D.
AU - Frey, S.
AU - Paragi, Z.
AU - Gurvits, L. I.
AU - An, T.
AU - Zhang, Y. K.
PY - 2015/4/7
Y1 - 2015/4/7
N2 - Few high-redshift, radio-loud quasars are known to date. The extremely luminous, radio-bright quasar, SDSS J013127.34-032100.1 was recently discovered at a redshift of z = 5.18. We observed the source with high resolution very long baseline interferometry (VLBI) at 1.7 GHz with the European VLBI Network (EVN) and found a single compact radio component. We estimated a lower limit to the brightness temperature of the detected radio component, TB ~1011 K. Additionaly, when compared to archival radio data, the source showed significant flux density variation. These two findings are indicative of the blazar nature of the source.
AB - Few high-redshift, radio-loud quasars are known to date. The extremely luminous, radio-bright quasar, SDSS J013127.34-032100.1 was recently discovered at a redshift of z = 5.18. We observed the source with high resolution very long baseline interferometry (VLBI) at 1.7 GHz with the European VLBI Network (EVN) and found a single compact radio component. We estimated a lower limit to the brightness temperature of the detected radio component, TB ~1011 K. Additionaly, when compared to archival radio data, the source showed significant flux density variation. These two findings are indicative of the blazar nature of the source.
KW - Galaxies: active
KW - Galaxies: high-redshift
KW - Quasars: individual: SDSS J013127.34-032100.1
KW - Techniques: interferometric
UR - http://www.scopus.com/inward/record.url?scp=84929668459&partnerID=8YFLogxK
U2 - 10.1093/mnrasl/slv046
DO - 10.1093/mnrasl/slv046
M3 - Article
AN - SCOPUS:84929668459
SN - 1745-3925
VL - 450
SP - L57-L60
JO - Monthly Notices of the Royal Astronomical Society: Letters
JF - Monthly Notices of the Royal Astronomical Society: Letters
IS - 1
ER -