The Most Powerful But Little-Known Force of the Universe: Quasars!
In fact, quasars are the most fascinating and mystical objects not only for me but also for astrophysics and astronomy. Quasars, also known as quasi-stellar radio sources, are the brightest and most distant objects in the universe. They are so bright and emit so much energy that, despite being the size of our solar system, they can emit 10 to 100 times the energy of the Milky Way. Quasars are so distant (some have been discovered 10-12 billion light-years from Earth) that we can see them as stars with standard telescopes. However, when observed with radio telescopes, they emit a much larger amount of radio than a standard star. This is why they are called quasi-stellar radio sources, or simply quasars. Quasars have the largest redshift in the universe. Due to the expansion of the universe, the farther an object is from us, the greater its redshift—that is, its distance. Some quasars are estimated to be receding from us at a speed of 240,000 km per second.
So what exactly is a quasar? As I mentioned in the title, it's relatively unknown. It's estimated that the first galaxies formed in the first few billion years of the universe.
So, what exactly is a quasar? As I mentioned in the title, it's largely unknown. It's estimated that the first galaxies formed in the first few billion years of the universe. Our own Milky Way galaxy may have been a quasar at one time, and the supermassive black hole at its center is responsible for this. The reason for this powerful radio source is thought to be that as the supermassive black hole swallows large amounts of matter (estimated at 10 solar masses per year), it rapidly spins and overheats the matter before entering the event horizon. This causes it to begin emitting x-rays, light, gamma rays, and radio waves. Since even light cannot escape from a black hole, we can infer that these radiations originate around the event horizon, before entering the center.
Quasars were initially thought to be white holes, the opposite of black holes. According to this idea, matter entering black holes in other universes would exit these white holes, allowing fresh matter to enter our universe. However, this idea is now outdated. They also share a similarity to neutron stars, which can be compared to neutron stars. Neutron stars (including pulsars) are also much larger objects that emit radio radiation.
Note: I would like to thank Zafer Emecan and Yılmaz Filik for answering my question about quasars = )
