BEIJING, April 7 (Xinhua) — Scientists have taken images of black holes more powerful and revealing than previously thought, with the Black Hole Vision Telescope Project (EHT) releasing for the first time in April 2019, a landmark image that opens the door for scientists to explore the universe in an unprecedented way.
The Black Hole Vision Telescope captured images of a supermassive black hole with a shadow in the center of the M87 galaxy.
Black hole photon rings may consist of countless sub-rings
In the coming years, scientists will explore black holes in greater depth, with a new study showing that the most striking feature of a black hole captured by the Black Hole Horizon telescope is that the M87 supermassive black hole is surrounded by a bright, mysterious ring structure, but the structure of the black hole ring to date remains an unsolved mystery, with the likely black hole ring containing a thin “photon ring” consisting of a sub-ring of an infinite number of columns.
The complex structure of photon rings holds valuable information about black holes, and scientists can gain access to this important information by expanding the range of observations by the Black Hole Horizon telescope, the team said.
Study author Michael Johnson, an astrophysicist at the Harvard-Smithsonian Center for Astrophysics, said: “Black holes give us a gift that the photon rings of black holes contain information different from any object target studied by astronomers. These photos make it easier for us to understand black holes, but they are actually a new way of measuring them. “
The Black Hole Vision Telescope project is a network of eight land-based radio telescopes spread around the globe, connected together to form an Earth-sized virtual device known as the Very Long Baseline Interferometry (VLBI).
The vast network of telescopes has been observing two supermassive black holes, m87, which are 53.5 million light-years from Earth, about 6.5 billion times the mass of the sun, and the milky milky milky black hole, known as the Constellation a Man, which is about 26,000 light-years from Earth and about 4.3 million times the mass of the sun.
First, EHT researchers looked at the M87 black hole, which changes less in a short period of time, so they hope to get image data from the constellation A as soon as possible. Because black holes devour light, these images do not depict the inner state of a black hole, but the EHT project provides an outline of a black hole, a vision of a black hole, and nothing in the region can escape the gravitational bondage of a black hole.
The EHT project image shows the silhouette of the M87 black hole surrounded by a bright photon ejection ring, which is made up of fast-moving hot plasma that surrounds the supermassive black hole. In the latest study, Johnson and colleagues believe the black hole photon ring is an important resource that astronomers can explore in depth.
Black hole sub-rings are like the number of frames in a movie.
In Einstein’s general theory of relativity, a black hole emits a “photon ring” embedded in the halo, which itself is a complex infinite sub-ring structure.
In a new paper, the sub-rings are like the number of frames in a movie, able to see the history of the universe from a black hole. Watching this “movie” reveals key factors about the nature of black holes and gravity, such as a detailed description of the black hole’s sub-rings that could help scientists determine the mass and rotation of black holes, two characteristics that define these strange black holes.
Once you know these two parameters of a black hole, you think you know everything about it, and current EHT observations allow a 10% error between the mass of a black hole and the actual mass, but don’t reveal much about the rotation of the black hole, but space telescopes outside Earth may find important data.
A larger telescope than Earth.
The EHT Alliance is an international research group with about 200 researchers who have long been working to expand human observations into space, provided that they are well funded. After all, larger telescopes, such as the very long baseline interferometry technology (VLBI), are more powerful.
But the prospect is challenging, as calculations show that at least six space telescope structures are needed to significantly improve the resolution of the Black Hole Horizon telescope. However, new research suggests that studying black hole sub-rings does not require such a large amount of money to spend. The researchers believe that only the Black Hole Horizon telescope can do so if it extends far enough into the space area, even if it is a man-made satellite, or just an airborne instrument on the main spacecraft.
Even in geosynchronous orbits, the resolution of this space black hole horizon telescope will be greatly enhanced, referring to the space area about 35,730 kilometers above the Earth’s surface, and the sub-ring information is easy to measure for a well-extended black hole horizon in a space region.
It looks like magic, in which case we can even triple the resolution of the Black Hole Horizon telescope, and if we pass a long space-based line, we might be able to increase the resolution of the black hole horizon telescope by 100 times. Such a space black hole telescope would form a vast network, even larger than Earth.
The milestone project is not near, but it may not be too far away, and the Black Hole Horizon telescope could take up to 10 years to acquire a space component.