How to fix it?

In order to let the five graduate students know the rapid growth mechanism of supermassive black holes more intuitively, Xu Mang deliberately used the three-dimensional software on the computer to make a dynamic diagram, and used this dynamic diagram to explain the relevant aspects.

"This is a supermassive black hole discovered by the Chandra Röentgen Ray Observatory. Xu Mang handed a document to several people, and said with a serious face: "It exists in the core of most galaxies, almost 13.1 billion light-years away. ”

This means that this supermassive black hole must form quickly after the death of the first stars. Xu Mang paused and continued, "However, there is not yet enough dust and gas in the early universe to explain this rapid growth. ”

Followed by

Xu Mang took out another piece of information, handed it to the five people, and said, "This is the early quasar report information, in which there are twelve hydrogen clouds with an amazing density, and these hydrogen clouds are identified by their unique luminescence under ultraviolet light. ”

Belch?

Hydrogen clouds?

What do you mean?

The five graduate students looked at Xu Mang with confused faces, feeling a little confused as to why they took out the hydrogen cloud.

"Don't worry. ”

"I haven't spoken yet. Xu Mang said indifferently: "These clouds of cold and dense hydrogen are billions of times more massive than the sun, forming rings around early galaxies, which extend about 100,000 light-years from the center. ”

"From this, we can conclude that these halos of gas are closely connected to galaxies and provide a perfect food source for the rapid formation of stars and the growth of supermassive black holes. "That is to say, there is indeed enough food in primordial galaxies to sustain the growth of supermassive black holes and the formation of powerful stars. ”

"Of course, all this is my guess, and if you want to know more about the formation code of supermassive black holes, you need to study the details of the original gas cloud. Xu Mang looked up at the five graduate students in the Department of Physics of Fuda University, and asked with a smile, "Are there any questions?"

“...”

“...”

“...”

Time

The hearts of the five people were damaged by 10,000 critical hits, why did a puzzle that puzzled everyone not survive for half an hour in Professor Xu's place? He just flipped through the data he had submitted, and then found the proof from these materials.

Why didn't you find out in the first place?

This...

This is the difference in strength?

"Keep researching... Adjust your thinking and think about ancient gas clouds. Xu Mang said indifferently: "Give me a complete research report in fifteen days, you can go back now, by the way... If you want to borrow any astronomical equipment, report to me, and I will contact you, and you can contact anyone in China. ”

moment

Watching the five graduate students leave, Xu Mang couldn't help sighing, hurriedly picked up the phone on the side, and made a call to Director Fang Jun of the Department of Physics of Fuda University.

"Hello?"

"Guess who I am?" Xu Mang asked with a grin, "There is no reward for guessing correctly." ”

“...”

"Xu Mang?" Fang Jun said helplessly: "What is the purpose of calling me?" Anyway, you are also the person in charge of the Xu Yang Research Institute, don't be a 'guess who I am' in the opening remarks in the future, it's too unstable." ”

"Ahem!"

"Don't forget your original intention. Xu Mang said embarrassedly and politely: "Director Fang... Anyway, wasn't the score line of the Department of Physics at Fudan University very low? The ten graduate students you asked to come over, they didn't seem to be very good, and they all felt a little ignorant. ”

“...”

"You can't use your own template to consider the other person, you... You haven't been in much of a class, but you jumped to the rank of professor in a year, and you took away a deputy director, and not everyone has the same experience as you. Fang Jun smiled bitterly: "Cultivate well, I still have things... Hang up first. ”

Syllable!

Just hang up.

Xu Mang was almost not, when did he be hung up by someone else?

Wrong...

is often hung up by Xiao Man.

...

Time flies minute by minute,

Two more days passed.

Xu Mang basically completed the scattering problem of uncharged neutrons, and a neutron diagnostic device with completely independent property rights was born, but... Xu Mang did not report the device, and he was always annoyed that he could not solve the problem that uncharged neutrons in the real sense would not be restrained.

I'm sorry

The pride of the heart cannot accept such a situation.

Of course, excessive pride will eventually end in failure, Xu Mang knows this truth, and while trying to overcome the problem that uncharged neutrons will not be restrained, he has stepped up the relevant simulation tests of neutron diagnostic devices.

To this end, Xu Mang has developed a diagnostic system, in which the neutrons in the field of view of the neutron diagnostic device can be scattered to check the proportion of scattered neutrons, so that it is clear how many uncharged neutrons there are at this time, and these data will be displayed in front of the scientific community in a very intuitive way.

"Shhhhh

"It doesn't feel like enough. Xu Mang frowned, and temporarily modified the system, adding measurement data such as emission energy spectrum, yield, space, time distribution, radiation dose, etc., to diagnose the comprehensive effects caused by uncharged neutrons.

At this point,

The neutron diagnostic device is truly complete.

"Hello?"

"Wife?" Xu Mang received a call from Xiao Man, and asked curiously, "Are you going to the capital for a meeting?"

"Ugh..."

"The high-tech industry technology conference is full of bigwigs in some high-tech industries. Yang Xiaoman pouted, with a hint of displeasure in his tone: "I don't fit in with them, I don't want to go at all, but this is another official invitation." ”

"I'm going to go to the United States in five days to attend the forum. Xu Mang said indifferently: "Flying around everywhere, isn't it our daily life?"

"You don't know!"

"They were very unhappy that I had a monopoly on the photoresist material, and then... I have a monopoly on flexible materials again. Yang Xiaoman said angrily: "They are even more dissatisfied, husband... What if they band together to bully me? After all, I'm alone. ”

Suddenly, Xu Mang fell into silence, just for a while, and said with a smile: "Don't panic, you still have me!"

"Hmm!"

"That's right..."Yang Xiaoman suddenly remembered something, and asked seriously: "Christmas Eve, Christmas, Valentine's Day, you didn't accompany me... What should you do?"

"Hello?"

"Hello?"

"What's going on? this... Why is there no signal?" Xu Mang looked at his full range of signals, opened his eyes and began to talk nonsense: "These communication companies... The quality of service is so poor. ”

Syllable!

Hung up,

With a long breath, Xu Mang had a feeling of the rest of his life, so dangerous... I almost fell for Xiao Man, but I have to face her requirements when I go home, what the hell should I do?

Bang bang bang,

There was a knock on the door, and then Brother Chuan Xiao walked in, holding a pot of tea in his hand.

"Xu Mang. ”

"Drinking this tea will definitely make you fall in love with it. Brother Chuan Xiao handed the can of tea in his hand to Xu Mang, and said with a smile: "This is a bribe." ”

"Huh?"

"What do you want to do when you suddenly give me a pot of tea?" Xu Mang asked curiously.

"Another nephew of mine is a graduate of HKUST with a master's degree in materials. Brother Chuan Xiao said: "I'm worried about finding a job, he is a very shafted person, he doesn't want to enter any company, but wants to work in the research institute, can you give him a chance?"

"Master's degree from the Department of Materials?" Xu Mang was stunned for a moment, and said with a smile: "Come on! Just tell you a plan, isn't there a piece of empty land next to us? My wife has already won it, and she will build a materials research institute on the side in the future." ”

"Let him come first?"

"Yes!"

"It just so happens that antiferromagnetic topological quantum materials need him. Xu Mang said: "I think the quantum materials group is finished.... There has been no movement for several days, and I'm afraid the five of them are desperate. ”

"It's too difficult for you to give. Brother Chuan Xiao said: "It's difficult to come up to hell, and they're not you." ”

Words fall,

Seeing the research report on Xu Mang's desk, he asked curiously, "Have you completed the neutron scattering problem?"

"Hmm!"

"It's a neutron diagnostic device, and I don't have the ability to solve neutron scattering yet. Xu Mang sighed, showing a hint of helplessness: "Maybe it can be solved at some time in the future, but it is definitely not now, and now I can't find an entry point to solve it at all." ”

"Or..."

"You report this first, Gyre-2 is just an experimental platform, and there will be No. 3 and No. 4 in the future, you can solve the neutron scattering problem in the gap time, but... Now you need to ease their immediate needs. Brother Chuan Xiao said.

Not to mention,

Sounds so reasonable.

ultimately

Xu Mang dialed Academician Zhou's phone.

"Hello?"

"Academician Zhou... Are you busy?" asked Xu Mang with a smile.

"Xu Mang?"

"It's okay..."Academician Zhou was a little surprised when he received a call from Xu Mang.

"Oh... It's okay. Xu Mang said cautiously: "Academician Zhou... I would like to ask, is the Circulation-2 project in a hurry? Is there a time short?"

"Time is tight. ”

"It's almost half a year away, but we still have some problems to solve. Academician Zhou smiled bitterly: "We will wait for you to simulate the system, and there is also the problem of neutron scattering." ”

That's right!

The analog system is still waiting!

Xu Mang then remembered another task he was given, the pre-simulation link system of Gyre-2, and now that he thinks about it, the time is quite tight, but this simulation link system should need to be done after returning from the United States.

"Academician Zhou..."

"I'll tell you a piece of news. Xu Mang said cautiously: "The physical phenomenon that uncharged neutrons are not constrained, I can't solve it for the time being... I need the Particle Collider to do the experiments and find a solution from the data. ”

"But..."

"In the device of thermonuclear fusion, I have temporarily found a solution to the problem of neutron scattering. Xu Mang said.

Academician Zhou was stunned for a moment, he had already heard it wrong, and hurriedly asked, "You... Have you found a solution to the neutron scattering problem in thermonuclear fusion?"

"Yes!"

"Found it!"

......