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The most distant quasar is 13.03 billion light-years away, hosting a supermassive black hole.Blazars and quasars are not stars, rather they are infant galaxies.The closest blazar is 2.5 billion light-years away from the earth, whereas the nearest quasar is 600 million light-years away.In the beginning, when blazars, radio galaxies, and quasars were first discovered, they were thought to be different objects. Nonetheless, the nearest blazar, Markian 421, is 2.5 billion light-years away. There is also another AGM called radio galaxy, which is angled straight up and never poses a risk to the earth. With a blazar, the earth is directly in the firing line, if close enough. Some AGN shoot out colossal jets of material that can travel close to the speed of light. In other words, we’re looking straight down the barrel of the gun. What Is a Blazar?Ī blazar is the same thing as a quasar, just at a different angle.Ī quasar will be angled slightly towards the earth, whereas a blazar is angled directly towards the earth. The radiation is created from superheated material in the accretion disk generated by particles of dust, gas, and other matter. There are many different types of AGN, each releasing an intense amount of radiation that powers a massive black hole at its core. There is another name for these extremely luminous centers of infant galaxies, known as ‘active galactic nucleus’ (AGN). Quasars are highly active and emit staggering amounts of radiation across the entire electromagnetic spectrum. Quasars are not stars, rather they are young galaxies located at vast distances away from us. Quasars are amongst the most distant known astronomical objects, their luminosity can outshine all of the stars in the galaxy they reside in, making them visible at distances of billions of light-years. It is powered by gas spiraling at intense velocity into a supermassive black hole. What Is a Quasar?Ī quasar is a highly luminous object found in the centre of some galaxies. The only galaxies that have enough of such materials are young or colliding galaxies. Quasars and blazars are formed when a supermassive black hole has enough material around it falling into the accretion disc to generate sufficient energy to power them. The difference between the two is simply the angle in which they face. Quasars and blazars are both luminous astronomical objects powered by black holes in their core. We will compare the two objects and answer some frequently asked questions surrounding the topic to help you fully understand the subject.
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This article will provide a description of quasars and blazars, and further highlight where they differ. Are you confused about the difference between a quasar and a blazar? Do you have some unanswered questions about these luminous phenomena?