Some authors go even further and consider it's a passive spiral galaxy, similar to those found on galaxy clusters with high redshift.
Quasars are very bright objects with a very high redshift.
They are intense, point-like sources of radiation (often from radio through gamma rays), characterized by high redshifts.
Schmidt's explanation for the high redshift was not universally accepted at the time.
QSOs are now generally accepted to be very distant galaxies with high redshifts.
Arp argued that many quasars with otherwise high redshift are somehow linked to close objects such as nearby galaxies.
Candidates with higher redshifts than UDFy-38135539's have been reported, but not yet confirmed with light spectrum instruments.
Such a high redshift means that the burst happened nearly 13 billion years ago.
Quasars show a very high redshift, which is an effect of the expansion of the universe between the quasar and the Earth.
It was confirmed to be at high redshift in 2012.