Two White Dwarfs Emit a Gravitational Wave!

Gravitational waves have only been detected in black hole and neutron star collisions to date. But for the first time, both white dwarfs were found to emit these waves. We briefly describe this discovery in our article.
Scientists at the Harvard & Smithsonian Astrophysics center have announced that they have discovered a pair of white dwarves with short orbital periods, two independent helium nuclei, called J2322 + 0509. The difference of this couple from the others is that it is the first source of gravitational wave (space-time fluctuation) detected.

He is an astronomer and chief author of the study at CfA (Center of Astrophysics). Warren Brown said that there are many more such dwarf pairs in the universe according to theories: “This finding will provide a foothold for models and future research so we can find these stars and reveal their real numbers.”
White dwarfs; These are dense and heavy stellar nuclei around the world, largely composed of helium, left over from the death of low mass stars.
He is co-author of the research, working at the University of Oklahoma. Mükremin Kılıç stated that this star pair will be used to verify the LISA (LaserInterferometer Space Antenna) mass shooting observatory, which is planned to be operational in 2034. Kılıç also; "It is important that double stars are detected and verified because we know that LISA can see these stars within a few weeks by turning their telescopes to them after they are operational," he added. "We have a small number of LISA resources that we know of today, and the availability of this new binary classification prototype will take us further than anybody can imagine."

Initially, scientists realized that the j2322 + 0509 system was challenging to investigate and began collecting critical information about this star system, which would shape future scientific results in more than one way. The optical light curve did not work because this pair did not have a light curve. Also, photometric signals did not work as the system did not have a photometric signal. However, spectroscopic studies revealed the orbital movements of the system by shaping the story of this scientifically important and difficult to determine binary star system.

They also found that systems that are difficult to detect, such as this double star system, may actually be the strongest sources of gravitational waves. This pair of stars was difficult to detect because the system was directed towards our face, like the point in the middle of the target board, rather than standing on the edge. Remarkably, the gravitational waves of this couple are 2.5 times stronger than the pair covering in this direction, standing on the edge.

This pair of stars also contained another surprise for scientists. The orbital period of the system takes 1201 seconds, or 20 minutes, which makes it the third shortest orbital period, the star pair, which we can detect. And the trajectory of this double star is actually disrupted because these radiating gravitational waves cause the stars to lose energy. In 6 or 7 million years, these two stars will unite to form a single, larger mass of white dwarf.


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