In the box, several fellow doctoral students felt that the scientific research project of this master from the Institute of Mathematics and Mathematics was a bit unreliable, but they had no more choices.
The Department of Astronomy is not a Department of Mathematics. Ph.D. students in the Department of Mathematics can also take advantage of the uniqueness of mathematics as a tool to participate in scientific research projects in other disciplines such as physics, chemistry, biology, materials, etc., to gain qualifications or even gain gold.
But the things studied in the Department of Astronomy are of no use to other projects, and it is simply impossible to participate in other projects to gain qualifications.
Nowadays, there is a project that requires people from the astronomy department. They give up, and some people come to help.
No matter how unreliable the project is, it is still a scientific research project. As long as you participate in it, you can add a colorful touch to your resume in the future.
And, just in case, just in case, just in case this project really succeeds, then the astronomy department of NTU will directly be ranked first among universities in the country, and even first in Asia.
It is currently impossible for the entire astronomical community to accurately measure the mass information of a red supergiant star that is 640 light-years away, let alone NTU.
If they, no, if the young junior brother in front of them can do it, and they participate again, they can also have the qualifications of a pioneer.
Not to mention the second author or third author, I have no extravagant expectations. Just mentioning them in the paper and showing that they collected and compiled the information can make them appear in the world.
From now on, when I go out, I can brag like this during chats and gatherings.
Hi, do you know that Betelgeuse is about to explode as a supernova 640 light-years away? I determined its precise size and shape! Yes, I am a pioneer in the astronomical world!
.......
With this mentality, several doctoral students from the Department of Astronomy officially participated in Xu Chuan's scientific research project.
Xu Chuan didn't bother to explain the calculation mechanism behind the Xu-Weyl-Berry theorem, let alone an astronomy student who knew almost nothing about mathematics, even a mathematics professor from Nanjing University might not be able to understand it in a short time.
Anyway, the tasks of these senior brothers are very simple. They just need to collect data according to his requirements. The final calculation is done by him himself.
NTU, Xianlin Campus, Zuodijiang Observatory.
Xu Chuan followed several doctoral students to visit the astronomy institute.
It was built with donations from the Hong Kong Zuo Dijiang Foundation and is one of the most advanced observatories in universities across the country.
"Sichuan God, I have to say that you are really lucky."
"If you had done this project one or two years in advance, you would have had to go to Qinghai or southern Yunnan for the basic parts."
"But now, we have Zuodijiang Observatory and Purple Mountain Observatory. These two astronomical research stations were only officially completed and opened in 2014. The reflecting telescopes, Schmidt telescopes and radio telescopes inside are enough to collect some basic data.
, can save you a lot of scientific research funds.”
Walking on Dingshan Mountain in the school, Liu Xuan introduced Xu Chuan with a smile.
"Only a part can be collected?" Xu Chuan was stunned for a moment and asked with a frown.
He really didn't know much about the astronomical world. He only knew that NTU's astronomy department ranked among the top universities in the country, and that there was a nationally famous Purple Mountain Observatory in Jinling.
He thought that these two places would be able to complete the collection of information about Betelgeuse, but from what Senior Brother Liu said, it seemed that these two places could only collect part of it.
Liu Xuan nodded and continued: "It's good to be able to collect part of it. If it was 14 years ago, part of it wouldn't be collected."
"The Zuodijiang Observatory is built behind our school. Although it is not top-notch in terms of undergraduate teaching content, it is equipped with a number of astronomical equipment and can be used."
"Most of the astronomical equipment at the Purple Mountain Observatory are not located on the Purple Mountain. They are actually distributed in Qinghai, Xuyi, Ganyu, Antarctica and other places."
"What we have on Purple Mountain is actually just a scientific research and popularization park."
"Didn't you give me the necessary data last night? I did some research after I got back. If we follow the above standards, this scientific research experiment will require at least a trip to southern Yunnan and Qinghai."
"A real astronomical observation experiment requires not only top-level astronomical equipment, but also an excellent astronomical observation environment."
"Don't even think about placing astronomical equipment on Purple Mountain or in schools. That's impossible. The light pollution produced by a large city at night will have a great impact on astronomical observations."
"So at most we can collect some basic data here, and the top-level data must be collected in southern Yunnan and Qinghai using large astronomical equipment there."
"But don't worry. I checked that the astronomical observation array of the Southern Yunnan Observatory currently does not have any large-scale observation and scientific research projects, and it can be applied for use."
After a pause, Liu Xuan continued: "This is actually quite good, at least we don't need to go abroad."
"If you want to observe the aurora and some planets that are only visible in the southern hemisphere, you have to go to the Antarctic, and sometimes you have to go during the polar night, otherwise you won't be able to observe it."
"I went to that hellish place once last year with my tutor. I stayed there for a month. The temperature was 30 to 40 degrees below zero, which can make you freeze up. I've been there once and I don't want to go there a second time."
“Although the scenery is quite beautiful, it’s just like that if you stay there for a long time.”
Xu Chuan nodded. He had never been to Antarctica, but the temperature was 30 to 40 degrees below zero, which made him feel cold.
The coldest place he had been to in his previous life for a physics project was the permafrost in Iceland. He went there once and the temperature was around minus 20 degrees. It was so cold that he doubted his life.
It’s scary to think about having to carry out scientific research activities at temperatures of 30 to 40 degrees below zero.
Moreover, if something happens in Antarctica, it will really mean that the whole world will not respond, the earth and the earth will become inoperable, and it will be too late for rescue.
.......
After visiting the school's astronomical observatory and learning about the equipment for astronomical experiments, Xu Chuan returned to his dormitory.
He wants to continue to improve the Xu-Weyl-Berry theorem, and the data collection about Betelgeuse will be handed over to several doctoral students in the Department of Astronomy.
With senior brother Fan Pengyue helping to keep an eye on it, there is no need to worry about anything going wrong.
As for time, if he follows his requirements, it will take about ten days to a month to complete the data collection on Betelgeuse.
Such a large error is mainly determined by when the astronomical observation array of the Southern Yunnan Observatory can be applied for and the nature of the astronomical observation activities.
Not to mention the former, even if the Astronomical Observation Array of the Southern Yunnan Observatory cooperates with NTU, and even if it currently does not have large-scale observation projects, it is not that easy to apply to jump in the queue.
The time required for astronomical observation activities is not fixed, because different technical parameters and different telescopes must be continuously used for measurements to finally obtain a relative value.
During this period, all Xu Chuan could do was wait.
However, after completing the conversion and deformation of Xu-Weyl-Berry's theorem, he went to southern Yunnan with several doctoral fellows from the Department of Astronomy.
The so-called astronomical observation array of the observatory is actually located in a deserted ravine, surrounded by dozens of kilometers of deserted areas, which eliminates light pollution to the greatest extent.
But correspondingly, the life of the staff is extremely inconvenient, with almost no entertainment activities. The canteen chef has to travel dozens of kilometers to buy a dish or have it delivered by a dedicated person.
Under the guidance of his doctoral student brother, Xu Chuan used a large optical astronomical telescope to observe Betelgeuse, which is 614 light-years away.
The stars seen in the night sky with the naked eye are actually only a little larger than an egg in the mirror of a large astronomical telescope, which is much different from the huge stars you imagine.
The shape is like an egg yolk with a little force applied in a certain direction. Except for one side protruding a little, it can be said to be ordinary.
It was the dazzling Milky Way. Xu Chuan saw its true vastness and beauty for the first time.
In this wilderness area with no light pollution and excellent air, the vast Milky Way is like a transparent, bright and colorful satin, and like a squinting eye in the sky, it is very strange and beautiful.
A bright half-moon hangs in the dark night, emitting a cool light, and countless stars shine like gems, embedded in the clear sky.
Xu Chuan even saw the lunar sea and the super large crater above it with his naked eyes.
"Pretty."
A voice came from the roof of the institute, and at the same time a figure sat down next to Xu Chuan. It was Liu Xuan, a doctoral student in the Department of Astronomy.
"Well, it's a worthwhile trip."
Xu Chuan responded softly, staring intently at the Milky Way above his head.
This galaxy is different from the one in his memory.
In his memory, the Milky Way lies across the sky.
But what you see here is a vertical strip of light.
Just like the bridge between the Cowherd and the Weaver Girl during the Chinese Valentine's Day, it rises from the distant horizon and extends into the sky. It is like a sky bridge, connecting the ground and the sea of stars. It is so beautiful.
It can only be said that such beautiful scenery cannot be seen in the city.
Liu Xuan smiled and said: "This is also the reason why I study astronomy, because it is so beautiful."
Xu Chuan was noncommittal, staring at the Milky Way above his head and suddenly asked: "Do you think there are any aliens in this vast Milky Way?"
Liu Xuan was stunned for a moment, obviously not expecting Xu Chuan to ask this question. After thinking for a while, he said: "I don't know, unless I see it with my own eyes."
"But from the perspective of the birth of life, the probability of the existence of advanced intelligent alien life should not be low."
Xu Chuan didn't reply, just stared at the Milky Way silently.
The secret of his rebirth has always been a stone deep in his heart, and no one knows it.
But occasionally, he would also think about whether this was a coincidence or an arrangement, but he had never revealed it to anyone.
The two were silent for a while, and then Xu Chuan said, "Senior Brother Liu, how is the data collection on Betelgeuse going?"
"The current progress is about 67%. It will take another four to five days in southern Yunnan. After completion here, we need to transfer to Qinghai to use the radio telescope there to collect some mathematics. The time will be about
About a week.”
"That means it will take another twelve or three days?"
Liu Xuan nodded and said: "Well, almost. This speed is actually very fast. The main reason is that applications for astronomical equipment are approved almost in seconds. There is not much delay in this aspect."
"You are so lucky. When my tutor was doing experiments before, it took more than three months to apply for the observation array in southern Yunnan. Your application was approved within a week after it was submitted.
."
Xu Chuan smiled, this was not luck.
If anything, it should be a strength policy.
He solved the weyl-berry conjecture, and the above people need this conjecture to win a top mathematics award, so they need to maximize the influence of the xu-weyl-berry theorem.
The research project on Betelgeuse was quickly passed based on this influence.
.......
Xu Chuan did not stay in southern Yunnan for long. After staying for three or four days to get the first batch of data, he returned to Jinling.
Although the data collected so far is not comprehensive, the basic data and most of the data he needs have been collected, and it is almost ready for calculation.
Before the observation array in Qinghai collected the data, he was not prepared to let himself go. He could use this time to make a preliminary calculation.
After sorting out the collected data, Xu Chuan listed it on the manuscript paper.
Observation object: Betelgeuse.
Category: red supergiant.
Observed and calculated diameter at 3:40 a.m. on March 27, 2016: approximately 891.986d⊙~901.213d⊙ (d⊙ refers to the diameter of one sun)
This chapter is not finished yet, please click on the next page to continue reading the exciting content! On March 27, 2016, at 3:18 in the morning, the visual magnitude was observed: 0.827m.
On March 27, 2016, at 3:27 am, the distance to the Earth was observed: 659.76 light years.
March 27, 2016......
All kinds of data are neatly listed on a piece of paper. The amount of data is not large, but it is the result of nearly twenty days of work by several doctoral students.
Astronomy is really hard work sometimes, because sometimes you have to get up late at night to control the equipment.
Just like this time, in order to help him collect data, several doctoral students had darker circles under their eyes.
After listing the data, Xu Chuan stared at the data on the manuscript paper for a while and fell into deep thought.
After a while, the black pen in his hand once again drew lines of mathematical formulas on the manuscript paper.
"...n(λ)=(2π)?891.986d⊙w||nλn/2? ?1λ(n?1)/2
o(λ(n?1)/2...."
"Bringing in the speed of light, then n(λ)=(2π)891.986d⊙w.4580.12*λn/2..."
Converting to Sobolev space fluctuations is...
Bringing in the interval time, the amplitude functions are 0.37 and 0.24...
.......
In the dormitory, Xu Chuan stared intently at the manuscript paper in his hand, using a black pen to outline numbers one after another on it.
After completing the deformation and transformation of the Xu-Weyl-berry theorem, it is not difficult for him to apply it to the calculation of stellar data in the three-dimensional world, but the calculation is a little troublesome.
But this can't stop him.
One piece of observation data after another was brought into the formula, and after a long time, he finally got a complete calculation formula.
After taking a deep breath, Xu Chuan brought the final rough boundary value into the formula and performed the final calculation.
Soon, the complete data and calculated answers were presented on the manuscript paper, but the results made his eyes widen.