Abnormal crossing

Chapter 1 Abnormal Signal

".The book is finished. Thank you all for your company. Congratulations!"

Move the mouse to the Send option and press Enter.

After doing this.

Gu Wei gently pinched the bridge of his nose and leaned his head back against the passenger seat's headrest. The slight vibration caused by the moving car inexplicably made him feel comfortable.

But before he could savor the complex emotions of finishing his work, a young man popped his head out from the left side of his headrest and quickly glanced at Gu Wei's laptop screen: "Final remarks, Pigeon, are you finally going to finish the book?"

"Well, the plot has almost been pushed forward anyway. If it is dragged on, the protagonist will only poke a black hole. Besides." Gu Wei closed the notebook calmly and raised his middle finger to the other party in a friendly manner: "Pigeon, your uncle!"

"You blame me for your last name being Gu?" The young man who was speaking put his head back in the back seat and shrugged lightly. "Just accept your fate, pigeon. Nicknames are a fate that everyone cannot escape. It's like hemorrhoids. You either don't get them at all or they will stick with you forever. At least pigeons look pretty cute, don't they? - Well, if this sentence was put in Guangdong, it would probably be changed to "pretty sweet."

Gu Wei ignored the weirdo and turned to the middle-aged man driving beside him and asked, "Brother Guo, how far are we from our destination?"

The Brother Guo mentioned by Gu Wei was a sturdy man in his early forties. Hearing this, he looked at the road ahead as if he was trying to determine the direction. Then he drew a circle in the air with his left hand and said, "We're almost there after going around this hill. We'll take the main road for about 20 minutes."

Gu Wei nodded thoughtfully.

Gu Wei.

Gender male, gender identity male.

In the eyes of people around him, he is the typical 'other people's child'.

He was admitted to the junior class of USTC at the age of 15, graduated with a bachelor's degree at the age of 19, and obtained a Ph.D. in astrophysics at the age of 25, under the tutelage of Academician Wu Xiangping.

Now 26 years old, Gu Wei is an associate researcher at the Qinghai Delingha Observatory of Purple Mountain Observatory. He is responsible for the data analysis of the only large-scale equipment in my country's millimeter wave band, the 13.7-meter integrated aperture millimeter-wave radio telescope. In his spare time, he writes novels to earn some extra money.

If everything works fine.

In two or three years, Gu Wei will be awarded a senior professional title and become a full researcher - in the university system, that means a full professor.

At that time, he can continue to do front-line observation and analysis, or return to campus to engage in academic teaching and research. His future is promising.

Then, I would find a girl who might not be very pretty but is mutually attractive, marry her and have children, and retire peacefully after many years, carrying a thermos cup and a fishing rod to become a fisherman who can catch anything except fish.
Well, it was as stable as leading the opponent by 3-0 in the first half of the Champions League final.

ten days ago.

Far away in Guizhou and Guizhou, FAST, the famous 500-meter Aperture Spherical Radio Telescope 'Sky Eye', suddenly discovered two abnormal situations during routine analysis of pulse signals.

Or to describe it in astronomical terms, it should be called an "event":
The first event was that the radiation flux and spectrum of a radio source numbered FRB190238 were somewhat strange, suspected to be affected by the magnetosphere of some dense celestial body.

be honest.

Although this kind of "event" is considered abnormal, it is not extremely rare. For example, FRB180301 and FRB200428 were similar cases.

So FAST began to analyze the signal's dispersion and coherent radiation model as usual.

Finally, the wave frequency information of the interaction with it was compared and the coherent radiation model was found to be extremely special - just looking at this matter alone, there is actually nothing to be surprised about, after all, the universe is so vast that there are all kinds of wonders.

But five days later, the Sky Eye discovered a second event:

In a certain area in southern Qinghai, China, a common-frequency pulse signal was discovered that is completely consistent with the interference wave frequency coherent radiation model!

Based on the analysis of many data such as the quadruple nature, Heiling-Down curve, and time domain light band, the possibility that the two come from the same radio source has reached 100%, and it is highly suspected to be artificial.

This is outrageous, because this thing is a celestial pulse signal.
The word "pulse" is very common in real life. For example, water flossers, dust collectors, and massage chairs all belong to the category of pulses. However, in astrophysics, pulse signal is a very special concept.

The pulses come from pulsars, which are neutron stars that sweep beams of radiation past the Earth.

The north and south magnetic poles of a neutron star will continuously emit electromagnetic radiation. Since the magnetic axis and the rotation axis often do not coincide, the radiation from the two poles of the neutron star will continuously scan the universe as it rotates - just like the reader is holding a small wooden hammer and holding the handle, rotating it at a constant speed of one week per two seconds. There is a light source at both ends of the hammer, so every second you can see a beam of light sweeping across the reader's handsome face.

This model is somewhat similar to a lighthouse, so it is also called the lighthouse model.

The principle is not difficult to understand, but the problem is that the Earth, as an ordinary planet, does not conform to the lighthouse model at all!
It is said that the person in charge of FAST almost shook the project leader's shoulder to ask if he was awake, but after repeated tests, the result was
Still unchanged. As the closest scientific research institution to the scene, all members of the Delingha Observatory naturally acted as pioneers and went to the target area to search with the assistance of the local government.

After two days of searching, another search team sent back the following news:
Using the vehicle-mounted repetitive source detector, they discovered a deep pit with a diameter of about three meters, and the common frequency signal came from the bottom of the pit.

However, due to the simple equipment they carried, the search team was unable to further explore the interior of the deep pit, so they sent a request for equipment reinforcement to the Delingha Observatory.

Gu Wei, who had just returned from vacation, and his good friend Tian Ye, the young man who was talking in the back seat, were escorting the support equipment to their destination.

"Hey, dove."

The driver, Lao Guo, was an employee of the observatory and a member of the system, so Tian Ye chatted with Gu Wei without any reservation: "What do you think is going on with Group 2?"

Gu Wei was silent for a moment, then shook his head: "God knows. Let's not talk about why the pulse signal appears on the earth. The time it takes for this thing to interact with the radio source is scary. Old Tian, how far is FRB190238 from us?"

"2400 million light years."

"Look," Gu Wei snapped his fingers and raised his eyebrows, "2400 million years ago, the first co-frequency signal interacted with FRB190238. According to the round-trip optical path X2, the signal that caused the interaction should have left the Earth 4800 million years ago. Where did the civilization on Earth come from at that time?"

Tian Ye was also silent.

4800 million years ago.
This is a very long and heavy era.

At that time, even Homo sapiens had not appeared on Earth. As a result, a common-frequency signal that was suspected to be man-made was sent to the starry sky from a certain location in Qinghai?

More than ten minutes later.

Master Guo parked the off-road vehicle on the flat ground outside the base.

As soon as Gu Wei got off the car, a dark-skinned man wearing a gray baseball cap came towards him: "Xiao Gu, have you brought all the equipment?"

Gu Wei nodded at him and pointed to the rear carriage and said, "They are all in the back, Station Master."

The stationmaster mentioned by Gu Wei is named Xia Shaoxing, 43 years old, and his position is the stationmaster of the Delingha Observatory.

Xia Shaoxing has a mouth on his dark face, a nose on top of his mouth, a pair of eyes and a pair of eyebrows above his nose, and the whole person looks like he has a nose and eyes, ahem.
Xia Shaoxing's personality is as capable as his appearance. Seeing this, he quickly walked to the rear of the car and asked everyone to move the equipment.

This time, Gu Wei brought a high-power pulse rangefinder with a wavelength of 3270μm. It looked square like a large urn and was not difficult to carry.

With everyone working together, the equipment was quickly transferred to the trailer, and the group pushed the cart towards another forest path.

About ten minutes more passed.

The light in front of the few people suddenly brightened, and an open space inside the dense forest appeared in front of them. The contrast between the open space and the surrounding woods was slightly inconsistent, and it looked like alopecia areata in the Mediterranean.

This open space was about 155 square meters. In the middle stood seven or eight people with work badges, gathered in groups of three or four in front of several unfolded folding tables to discuss something. However, considering the particularity of the mission, Gu Wei had no doubt that a bunch of 59mm submachine guns and rabbits or even modified submachine guns would appear at any minute.
After the trailer stopped, Xia Shaoxing signaled others to remove the equipment for debugging. At the same time, he pointed to the place where everyone was gathered and said to Gu Wei: "Xiao Gu, look, that's the pit we found."

Gu Wei's job responsibilities did not include debugging the rangefinder, so while everyone was checking their equipment, he curiously approached the crowd to observe the situation.

"Hey, Xiao Gu is here?" A middle-aged woman who was originally collecting data caught a glimpse of Gu Wei's figure. She smiled and took out a bottle of mineral water from the cardboard box at her feet and threw it to the young man who was popular in the unit: "Catch it!"

"Thank you, Sister Huang." Gu Wei took the bottle of mineral water steadily, unscrewed the lid, tilted his head back and took a big gulp, then poked his head towards the center of the crowd: "Is this the pit that sends out the common frequency pulse signal? It doesn't look like anything special."

I saw a black pit with a diameter of about two meters on the ground about seven or eight meters away from Gu Wei. Apart from the abrupt location of the black pit, there seemed to be nothing special about it.

It is such an inconspicuous black pit that sends out planetary pulse signals that theoretically cannot exist on Earth?

As if seeing the doubts in Gu Wei's heart, Sister Huang on the side smiled and explained: "Little Gu, don't underestimate this pit - do you know why the stationmaster requested support for this rangefinder?"

Gu Wei shook his head and pretended to listen attentively: "I don't know."

Gu Wei's expression obviously satisfied Sister Huang greatly, so she quickly looked around and lowered her voice: "Because... the known depth of this pit is more than 3000 meters, the real depth."

"Undetectable."

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(End of this chapter)