We Live In Nanjing - Chapter 118

  Chapter 118 SgrA*

  Bai Yang immediately informed his father of this important discovery.

  The old man was there, and he waved his hand and said which is a major discovery? What a big deal, if the painting on the wall is gone, the putty is shoveled. Something will definitely happen in the future to make all the putty in your room be shoveled and repainted. Believe it or not?

  If you don’t believe me, I’ll put the words here and wait, and you will come back to see if this happens in the future.

  Papa acted like a prophet.

Bai Yang scratched his head. After discovering the disappearance of the image on the wall, he added tens of thousands of words to the plot of the science fiction blockbuster, what parallel universe, multiple histories, world line jumps, plot twists, and breathtaking. Gombrentaro is about to be possessed. , Preparing to cross the layers of the world to save Makise Hongliqi and Dudulu, but the father said nothing.

  Bai Yang cast his gaze to Uncle Wang on the side of the coffee table.

   Lao Wang didn’t look up, he had no interest in what Bai Yang said, and he just signed his own name on the article written by Xiao Zhu.

  White Yang had to turn his head and look back.

  Forsythia leaned against the door, spread his hands and shrugged.

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  Zhao Bowen is in a meeting.

  Not at the Provincial Party Committee or Municipal Party Committee, but at the Purple Mountain Observatory.

He was in a normal meeting today to report on the current work progress of the headquarters. Who knew that he suddenly received news from Zitai, and quietly turned on his phone to see that there was a major discovery, so Zhao said half of what he said and lost the manuscript. , The table was pushed, the chair was dragged, and he ran away, leaving behind a group of leaders who were dumbfounded.

  The leader quietly asked the secretary if he was on fire at home.

  ”Can it be clearer?” Zhao Bowen frowned. There was a photo on the PPT, and there was a pile of photos on the table in front of him.

   “Uh… Teacher Zhao, you also study physics, and you know…”

   “I just want to know, can it be clearer?” Zhao Bowen interrupted him.

  The background color of the photo is black. There are sparse white dots on the black background, like chalk dust sprinkled on the blackboard, and a dark red arrow pointing to a dim dot in the center of the photo.

The label below    is SgrA*.

Zhao Bowen, a pure layman in astronomy, also knows that SgrA* is the star of Sagittarius A. The sesame mung bean-sized spot in the photo is actually a super-giant black hole with a mass of four million times the sun. Sitting in a conference room, you can’t see it at all. When it came out, Zhao Bowen’s head couldn’t imagine how massive the sun is four million times the mass, but fortunately, the director explained that it is a black hole, not a star, so even though its mass is as large as four million suns. Large, but its diameter is actually only 40 million kilometers.

The photo in Zhao Bowen’s hand is an enlarged version of SgrA*, with lower resolution and black and white colors. Enlarging the dim white dot on the PPT several hundred times is in Zhao Bowen’s hands. The clarity is better than black sesame paste. To be blurred, but the structure can still be seen roughly-it is a vague, hazy circle without any details.

  Old Zhao inexplicably thought of the big eye he saw that night. It was a similar pupil. This association made Zhao Bowen shiver. Isn’t the characteristic of a black hole that even light can’t escape is similar to that eye? When looking directly at that huge eye, Zhao Bowen only felt that he had seen the abyss.

  This photo is the result of the labor of the astronomy team over the past month.

The astronomy group has undertaken the most important and at the same time the most important task in the major expert groups, which is to analyze and judge the possible source of the black moon. The teacher’s draft has pointed out the direction-the Milky Way, the black moon comes from the Milky Way, It is not a native of the earth. This is a vital clue, and it is very reliable. It is as reliable as the teacher told you before the exam that the scope of the exam is the entire book.

  With such a clue, the astronomy team also felt that it was reliable and **** crying, and it was dead.

After rigorous inference, precise analysis, pious prayers and blind voting (blind blindness is also an important part of scientific research), everyone agreed that the most valuable target is the super-giant black hole in the center of the Milky Way, so it is on the earth. Long guns and short cannons turned their heads to focus on the center of the galaxy-eh, don’t tell me, it’s a bit rewarding.

  They found that the fine shadow structure of Sagittarius A* is not the same as expected. There may be interference from multiple gravitational sources outside the accretion disk. Further observations in the X-ray frequency band revealed that some of the energy disappeared.

  Although Zitai has repeatedly emphasized that this is entirely possible as a natural phenomenon, after all, the universe is so extraordinary, but Zhao Bowen is already excitedly patting the table: black hole city! This is a black hole city! (Note 1) Black Moon comes from here!

  ”This is the latest achievement?”

  Zhao Bowen calmed down.

“Old results. The research on supermassive black holes in the astronomy community can be said to be a significant one. We and our counterparts in Europe and America have been doing it, including UCLA and Max Planck Institute. In the first half of this year, it was not just the first in the world. A picture of a black hole? They built an EHT, called the Event Horizon Telescope, using VLBI (Very Long Baseline Interferometry) technology. The photo was a supermassive black hole in the Virgo M87 galaxy. The black hole is very large, 6.5 billion times the sun. Mass. The virtual aperture of their telescope is equivalent to the diameter of the earth.”

  ”Can it be requisitioned?” Zhao Bowen’s first thought was this.

   “Mr. Zhao, it is from abroad.” Someone lowered his voice to remind.

  ”Can we cooperate and cooperate?” Zhao Bowen changed the word.

“We have cooperated.” The reporter replied, “This observation plan has contacted the eight radio telescopes of EHT, but the time is too short and the plan is rushed. Currently, this effect can only be achieved. After all, people are preparing to photograph the black hole of M87. For ten years.”

  ”We need to see more clearly.” Zhao Bowen tapped the wooden tabletop with his knuckles.

“It can be, but you have to use a longer baseline and longer observation time.” The reporter on the station said, “The results we are currently seeing are LAMOST and Miyun in Beijing, Shanghai Astronomical Observatory and Australia and North America. , The product of the cooperation of several telescopes in South America. This transcontinental cooperation is already the largest baseline on the earth. The baseline cannot be extended, only the observation time can be extended.”

   “We don’t have ten years. The day lily will be cold after ten years.” Zhao Bowen shook his head, “We can only make the telescope a little bigger.”

  Zhao Bowen tweeted the glasses, and he showed a good quality of Party A: I don’t care what you do, I only need you to do it.

  But even telescopes with the diameter of the earth are not enough, how can we build a telescope with a larger diameter?

“I can roughly understand what VLBI is about. Multiple radio telescopes are networked to form a virtual large-aperture telescope. If we can extend the telescope far enough, the virtual telescope will have a larger aperture.” Zhao Bowen said, ” So let’s use the revolution of the earth itself. The earth itself is moving, and the motion of the earth itself can form a huge baseline. Ideally, the baseline can be as long as the earth’s revolution diameter, which is almost two astronomical units.”

  Zhao Bowen excitedly added:

  ”This is similar to a telescope with an aperture as large as the Earth’s orbit!”

  ”But VLBI needs simultaneity…”

  Someone weakly reminded.

“It must be difficult and requires technical research. I know everyone can solve the problem.” Zhao Bowen ignored the protest of the astronomy team and opened the second folder. “Okay, let’s start the second topic. “

  Zhao Bowen glanced down.

  ”How to get the Voyager and Pioneer back? Do you have any ideas, speak freely, and if you have a plan, you can lean forward.”

   “Wow!” There was a harsh rubbing of chair legs, and everyone in the meeting room stepped back neatly.

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  (Note 1: Black hole city, proposed by the famous physicist Roger Penrose in 1969, refers to a structure surrounding a black hole that can use the peculiar physical properties of the event horizon to obtain energy.)

  (End of this chapter)