Font
Large
Medium
Small
Night
Prev Index    Favorite Next

Chapter 119 Betelgeuses scientific research project

Xu Chuan didn't expect that the Morningstar Mathematics Award was awarded more than two months in advance because of him. At first, he thought that some observatory had been applied for or other good news, but he didn't expect that it was this.

Although this is indeed good news from the perspective of honor, the Morningstar Mathematics Award is awarded in advance until May and in July and August.

But if others know this idea, they will definitely say that he is still good at taking advantage of it.

It can change the awarding time for the Chinese Fields Medal, which is good to be a lifetime.

But for him, it seems that it is no big deal.

For him, breakthroughs in achievements and knowledge are far more important than winning glory. He wouldn't mind even if he didn't win any award after proving that weyl-berry conjecture.

He may be very pretending to be ok and owed, but he did think so in his heart.

Sooner or later, or not, he was there.

.........

"You kid doesn't seem very excited. Why do you think the Morningstar Mathematics Award is lower?"

In the office, Zhang Zhengping looked at Xu Chuan's condition and asked with a smile.

"That's not. Winning the Chinese Fields Medal is worth a feast for any mathematician. I'm a little worried. This was suddenly awarded two months in advance, so won't people gossip?" Xu Chuan asked curiously.

"Don't worry about this, just wait for the award with peace of mind, no one can gossip."

Chen Zhengping smiled and continued, "Oh, there is another thing. The astronomical equipment and observatory you applied for before have been approved. The use time is from March 10th to March 20th, and it lasts for twenty days. During these twenty days, you can use various professional equipment from the astronomy department at will."

"Of course, because you are a scientific research project, you need to pay a certain usage fee, but you can spend these on the scientific research project you applied for."

"Don't worry about money. A total of 2.4 million scientific research projects established under the name of Xu-Wel Berry's subsequent expansion have been approved."

Speaking of this, Chen Zhengping sighed: "A freshman student, who presided over a scientific research project of more than 2 million yuan, is probably the first case in the entire China and even the entire world."

"The scientific research projects I participated in when I was in college were only 80,000 yuan."

"Without the contributions of you and great scholars, how could we have today's prosperity without the contributions of you and the great masters?" Xu Chuan said with a smile.

"Okay, don't be poor."

Chen Zhengping glanced at Xu Chuan and continued: "It should be the first time you have a scientific research project matter. Tomorrow you will find your senior brother Fan Pengyue. He can help you get the process and procedures documents, including the use of scientific research project funds and reimbursement. You can learn it."

"After all, with your development, there will probably be no shortage of subsequent scientific research projects, so you still need to be familiar with the process."

Xu Chuan nodded and agreed. Although he was familiar with controlling scientific research funds and scientific research projects, he really didn't know what kind of routine it was in China.

On the other side, Chen Zhengping thought about it and added: "Oh, by the way, for your scientific research project, if you need to use some complex and precise astronomical equipment, it is recommended that you hire some doctoral students from the Department of Astronomy or Astrophysics."

"On the one hand, it is to avoid damaging the equipment, and on the other hand, they have more experience in controlling these equipment and can more accurately observe the data you need."

"Yeah, OK."

Xu Chuan nodded. Even if Chen Zhengping didn't say these things, he would consider them.

He has special knowledge in his profession. Although astrophysics is also physics, he cannot get involved in the research he had in his previous life. He is really not sure how to use professional astronomical equipment to obtain the data he needs.

.........

After coming out of the instructor's office, the news of applying for the right to use astronomical equipment made Xu Chuan look up at the sky happily.

Although the light pollution in the city is severe, the weather is good today. In addition, it will be the hour of night. The moon is bright and the sparse stars are clear and bright on the black curtain.

And in the east, there are a group of bright stars shining.

That is Orion, which is easy to identify in the night sky. There are seven stars that make up its main body, four of which form a huge quadrilateral, and the three stars in the middle of the quadrilateral are arranged in a straight line.

Among these stars, there is a unique star on the upper left shoulder, which emits an orange-red light that is visible to the naked eye, completely different from the cold white light of other stars.

This star is called Betelgeuse, and it is also the object of his observation this time.

Betelgeuse can be seen all year round in the Northern Hemisphere.

But winter is the best observational reality, especially at the end of December, which rises from the east at dusk and is located on the shoulder of Orion.

From the earth, it may be about the same size as the fingernail.

But six hundred and forty light years away, it is a star much bigger than the sun.

Physically speaking, Betelgeuse's current expansion radius is about 8 astronomical units (au).

If you place it in the center of the solar system, Betelgeuse may extend all the way outside Jupiter's orbit.

That is to say, if it is located in the center of the solar system, its surface will surpass the asteroid belt and reach and transcend Jupiter's orbit, completely sweeping Mercury, Venus, Earth and Mars, and some people will even think it is enough to swallow the asteroid belt and Jupiter.

The reason for this cognitive bias is that the distance is too far, which makes it impossible for people to estimate the exact diameter.

In addition, Betelgeuse itself is also periodically changing its shape. In addition, the theory of photometric variable star pulsation, the change of angular diameter with wavelength, and the complex and asymmetric cladding of Betelgeuse, etc., make its precise diameter impossible to judge.

This chapter is not over, please click on the next page to continue reading! Xu Chuan is very interested in this star with huge mass but life has reached its old age.

It has many puzzles, and if it can solve some of them, they will set historical records.

Now that the astronomical observation equipment has been applied for, it means that it will be able to study it in another week.

.........

Returning to the dormitory from the instructor's office, Xu Chuan temporarily put down his research on the "mystery of the proton radius" and turned his attention to Betelgeuse.

Before this, he had collected a lot of information about Betelgeuse, from basic astral parameters to photos, to the complex dynamics of the extended atmosphere of Betelgeuse and plume gas ejection, etc.

He has seen these things once, but he still finds them magical.

Just like in 2009, an infrared interference measurement study conducted by the Australian Infrared Research Institute said that since 1993, Betelgeuse has shrunk by 15% at an increasingly rapid rate, but its visual magnitude has not dimmed significantly.

That is to say, its volume has been reduced by 15%, but its brightness has not changed, neither brightening nor dimming.

It’s like a fat man with 200 kilograms lost thirty kilograms and turned into 170 kilograms, but he still looks like he was originally obese.

This is unscientific.

Although scientists later gave some explanations, such as this obvious contraction may be caused by shell activity in the star's extended atmosphere, or by the large loss of stellar matter.

But these explanations have their own shortcomings.

For example, if the shell activity in the extended atmosphere of the star causes the volume to decrease, then the brightness of Betelgeuse should be significantly improved instead of almost no changes.

Because if the shell activity in the Betelgeuse atmosphere shrinks, the density of stars will become larger and larger as the shrinkage occurs, and materials such as hydrogen and helium in the shell will participate in nuclear fusion reactions, and the brightness will be significantly increased, rather than almost no changes.

This is like a ironwork. When a piece of red-burned iron becomes smaller under the impact of a forging hammer, the red surface will gradually turn into a hot white.

Although this description is a bit inappropriate, it is very vivid.

In addition, Betelgeuse is already a massive star in his later years and is about to explode supernova, so Xu Chuan is very interested in its changes.

It would be even more exciting to see it explode in a supernova in your lifetime.

.........

In the dormitory, Xu Chuan sorted out the information in his hand and took out a stack of white paper.

The black signature pen in his hand hovered on the white manuscript paper. After pondering for a while, he wrote down data equations one by one.

"...... δ2u/δt2=Δu,t>0,x∈Ω; u=0,t≥0,x∈Danfu

"........ Δ=∑πj=1δ2/δx2j..."

Δ is the Laplace operator and δΩ is the boundary of Ω.

In order to find the standing wave solution of the problem, use the separation variable method, let u(t,x)=ψ(t)·φ(x), substitute this into equation (1) and take into account the boundary conditions, then for λ>0, there is:

Δφ/φ=ψtt/ψ=-λ......

.........

It is not that simple to calculate the shape and diameter of a star through the xu-weyl-berry theorem, and it is not enough to directly bring the observed data into the formula to calculate it.

The first thing to do is to perform a certain degree of deformation on the xu-weyl-berry theorem, transform it from equal spectrum fluctuations to Soberlev space fluctuations, and then calculate it by presenting amplitude function of periodic oscillations.

This is a very troublesome job, but fortunately, an ordinary target, such as an ordinary star, or an ordinary black hole, only one deformation and fluctuation conversion is enough.

It is an adaptive formula and is practical for astral bodies within a certain range of parameters.

If someone else came to complete the job, it might not be possible to find the door for a month or two, but for Xu Chuan, this is very familiar.

He is the founder of the xu-weyl-berry theorem. Except for the two conjectures, weyl and berry, no one is more familiar with the weyl-berry conjecture than him, and even the two founders may not be as familiar with him.

Therefore, in terms of deformation and transformation of the xu-weyl-berry theorem, it can be said that it is like a fish in water.

.........
Chapter completed!
Prev Index    Favorite Next