Why does the black hole at the center of the Milky Way “blink” at us?

The black hole at the center of the Milky Way is “blinking” at us, and scientists believe they already know why,media BGR reported. In a new study, astronomers explain that a disk-like matter around a black hole may be flickering because of “hot spots” formed inside the black hole. The study was published in the Astrophysical Journal.

Now, using data from the Atacama Large Millimeter Wave/Submillimeter Wave Array (ALMA) telescope operated by the European Southern Observatory in Chile, the researchers recorded an inexplicable phenomenon that occurred near sagittarius A, a location at the heart of the Milky Way galaxy known as a black hole. This supermassive black hole is flashing in our direction.

In a new paper published in the Astrophysical Journal, the researchers described their observations of a fast-flashing light curve from the position of the Constellation A. Black holes themselves do not glow, so what could this be?

“It is well known that the Constellation A-s sometimes glows in the millimeter band,” Yuhei Iwata, lead author of the paper, said in a statement. “This time, with ALMA, we were able to obtain high-quality data on the change in the intensity of the radio wave for 10 days, 70 minutes a day. Then we found two trends: a quasi-cyclical change with a typical time scale of 30 minutes and a slow change of one hour. “

Despite all the discoveries scientists have made about our universe and where we are, we know very little about black holes. Because of the strong gravitational pull of black holes, their surroundings tend to be slowly devoured by some material. Hot gas, dust, and debris form a halo around a black hole called a suction disk. The substance in the accretion disk can move at a speed close to the speed of light.

The flickering radiation is thought to come from the region within the black hole disk that is closest to the black hole itself. “Hot spots” can form in a fast-moving disk of black holes. Scientists believe it is these “hot spots” that are “blinking” at us.

“Hot spots form sporadically in the disk and rotate around the black hole, emitting intense millimeter waves. The researchers explained in a press release. “According to Einstein’s theory of special relativity, this emission is largely magnified when the heat source moves toward the observer at a speed comparable to the speed of light. “