Want to hear the sounds created by a black hole? Well, here you can
Article by: Andacs Robert Eugen, on 05 May 2022, at 12:18 pm Los Angeles time
Astronomers have just made sonifications with a remix for the sounds caused by a black hole.
A sonification is more precisely the translation of astronomical data into sounds, which can be heard by our ear.
The sonification belongs to the pressure waves sent by the black hole in the center of the Perseus cluster, which later caused ripples in the cluster's hot gas, which could be translated into a note, but which we cannot hear.
According to researchers at the Chandra X-ray Observatory, the sound emitted is approx. 57 octaves below the middle C. And people can't even hear such small sounds.
It is the first sonification that used real sound waves found in NASA's Chandra X-ray Observatory return data making it different from the previous ones.
It is also the first time that sonar waves from the sonification of a black hole have been made audible to the human ear, that is, we could somehow hear a black hole for the first time.
And you will probably say that it is impossible because sound cannot travel through space, since space is a vacuum, but this conception is also true, astronauts cannot hear each other if they shout in space.
More about sound in space, in the article from the physics section here.
Even though most things in space happen quietly, there are some exceptions as well.
In a cluster of galaxies, huge amounts of gas envelop the hundreds or even thousands of galaxies within it. Thus, in this environment, sound can travel without problems, according to researchers.
What did the scientists do to make the sounds heard by the human ear?
Simple, they increased the scale by 57-58 octaves above the height of the real sounds, so that we could hear them.
It may be a little 57-58 octaves, but the sounds have been magnified so much that there is no number designed to determine how many times they have been magnified.
Thus, a combination of numbers is used.
As a result, the sounds were magnified by researchers by 144 quadrillions and 288 quadrillion times higher than their original frequency.
It would probably take you a few A4 pages to write the number.
"The radar-like scan around the image allows you to hear waves emitted in different directions. In the visual image of these data, blue and purple both show X-ray data captured by Chandra," said researchers.
In addition to this sonification, during World Black Hole Week, NASA presented another sonification of Messier 87.
"This new sonification does not feature the EHT data, but rather looks at data from other telescopes that observed M87 on much wider scales at roughly the same time. The image in visual form contains three panels that are, from top to bottom, X-rays from Chandra, optical light from NASA's Hubble Space Telescope, and radio waves from the Atacama Large Millimeter Array in Chile. The brightest region on the left of the image is where the black hole is found, and the structure to the upper right is a jet produced by the black hole. The jet is produced by material falling onto the black hole," said astronomers about the second sonification released.
"The sonification scans across the three-tiered image from left to right, with each wavelength mapped to a different range of audible tones. Radio waves are mapped to the lowest tones, optical data to medium tones, and X-rays detected by Chandra to the highest tones. The brightest part of the image corresponds to the loudest portion of the sonification, which is where astronomers find the 6.5-billion solar mass black hole that EHT imaged."