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As a quasar, TON 618 is believed to be the active galactic nucleus at the center of a galaxy, the engine of which is a supermassive black hole feeding on intensely hot gas and matter in an accretion disc. Given its observed redshift of 2.219, the light travel time of TON 618 is estimated to be approximately 10.8 billion years.
Masses of black holes in quasars can be estimated via indirect methods that are subject to substantial uncertainty. The quasar TON 618 is an example of an object with an extremely large black hole, estimated at 4.07 × 10 10 (40.7 billion) M ☉. [108] Its redshift is 2.219.
Animation of a Lyman-alpha blob. The giant Lyman-alpha blob LAB-1 (left) and an artist's impression of what it might look like if viewed from relatively close (right).. In astronomy, a Lyman-alpha blob (LAB) is a huge concentration of a gas emitting the Lyman-alpha emission line.
The Phoenix Cluster (SPT-CL J2344-4243) is a massive, Abell class type I galaxy cluster located at its namesake, southern constellation of Phoenix.It was initially detected in 2010 during a 2,500 square degree survey of the southern sky using the Sunyaev–Zeldovich effect by the South Pole Telescope collaboration. [5]
SMSS J215728.21-360215.1, commonly known as J2157-3602, is one of the fastest growing black holes and one of the most powerful quasars known to exist as of 2021.The quasar is located at redshift 4.75, [1] corresponding to a comoving distance of 2.5 × 10 10 ly from Earth and to a light-travel distance of 1.25 × 10 10 ly.
Europe in 1000, with most European states already formed. The Holy Roman Empire emerged around 800, as Charlemagne, King of the Franks and part of the Carolingian dynasty, was crowned by the pope as emperor. His empire based in modern France, the Low Countries and Germany expanded into modern Hungary, Italy, Bohemia, Lower Saxony and Spain.
The 618 area code dates to 1947. A new 730 area code overlaying the current 618 area code will be introduced in southern Illinois next year, the Illinois Commerce Commission announced Wednesday.
SDSS J0100+2802 (SDSS J010013.02+280225.8) is a hyperluminous quasar located near the border of the constellations Pisces and Andromeda.It has a redshift of 6.30, [1] which corresponds to a distance of 12.8 billion light-years from Earth and was formed 900 million years after the Big Bang.