According to the American “Space” website, the researchers used a new method that includes data from thousands of white dwarves to observe the strange phenomenon and provide more evidence for the theory of general relativity.
When stars like our sun run out of fuel, they get rid of their outer layers and are stripped into an Earth-sized core. This core was known as the white dwarf star, which is believed to be the final evolutionary state of a stellar body.
But these stellar remnants hold a mystery: when the white dwarfs’ masses increase, they shrink in size, so the white dwarfs will end up with a mass similar to the mass of the sun, but is crammed into an object the size of Earth.
White dwarfs become so small and compact that they eventually collapse into neutron stars, which are high-density stellar remnants with a radius of only 18 miles (30 kilometers).
The theory of the relationship between mass and individual radiation within white dwarf stars has also been developed since the 1930s, as it is believed that the reason for the increase in mass of white dwarfs while shrinking at the same time is due to the state of their electrons, so the white dwarf star is compressed, and the number of its electrons increases.
This mechanism is a combination of quantum mechanics, a fundamental theory in physics about the movement and interaction of subatomic particles, as well as Albert Einstein’s theory of general relativity, which deals with the effects of gravity.
“The relationship between mass and radius is an amazing combination of quantum mechanics and gravity, but it makes no sense to us for its weirdness,” said Nadia Zakamska, associate professor in the department of physics and astronomy at Johns Hopkins University who led the new study.
In this new study, a team from Johns Hopkins University developed a method for observing the relationship between mass and radius in white dwarves. Also, using data collected by the Sloan Digital Sky Survey and the Gaia Space Observatory, researchers looked at 3,000 white dwarf stars.
The source of the original news site: Day Seven – Technology