The West ruled this big field for 50 years and China will take over the next 20 years

Original title: this "tall" field of Western rule for 50 years, China to take over the next 20 years, emboldened where? In October 10th, the National Academy of Sciences China Observatory announced that the 500 m diameter spherical radio telescope (FAST) after a year of intense testing, has achieved the smooth operation of pointing, tracking, drift scanning and other observations, and confirm the plurality of newly discovered pulsars. "Eye" Project Deputy Chief Engineer Li Di introduction, "eye" debugging than expected progress, has detected dozens of high-quality pulsar candidates, including 6 stars through international certification. It's actually a big deal! Its significance is not limited to the realization of China's "zero breakthrough" in the pulsar detection field, more importantly, for the future more important exploration has made a good start, the good thing is still coming. So what is pulsar? What is the significance of the discovery of such a star in China? Uncle Ben will talk to you today. This article is compiled by the lookout think tank. If you need to reprint, please note the source of zhczyj and the author's information before the paper. Otherwise, the legal liability will be strictly investigated. 1, the strange star first to talk about what is found pulsars? Everything in the universe has to go through death, and it's inevitable to disperse light and hot stars at all times. After some stars die, they explode and become supernovae. A supernova explosion after the rest of the dross, is part of the neutron star, if the neutron star happened to have it rotating magnetic field, it will be the formation of pulsars, that is to say, in fact, the pulsar is a neutron star special. For humans, pure neutron stars are very strange: neutron stars are just as small as a small city, but heavier than the sun. Well, suppose there's a balance, with a teaspoon of neutron star material at one end and a 3000 meter peak at the other end. A teaspoon of neutron star material needs a peak of up to 3000 meters to be able to withstand the possibility of landing on a neutron star for a man who wants to visit neutron stars. The strong gravitational force on the surface of the neutron star instantly makes the spacecraft and everything inside it into a paste of subatomic particles. The pulsar, as a special neutron star, has the biggest feature of the neutron star. The biggest feature of the pulsar is that its radiation beam sweeps the earth periodically and makes the earth man see periodic pulses. It's a little bit like the lighthouse we've seen when we're sailing in the sea. Imagine a lighthouse that always lights and keeps moving regularly. The light from its window comes to our ship once every turn. The lighthouse keeps spinning, and it seems to us that its light will go on and on. The same is true of pulsars, which, once every rotation, we receive an electromagnetic wave that radiates, so that a pulse is broken, which is called the "beacon effect"". Thus, pulsars, such extreme objects, are unimaginable. In 1967, British female scientist Jocelyn Bell accidentally discovered pulsars. At that time, the received signal for pulsar radio telegraph signal, like the previous, da da da da da...... She thought she had received an alien signal, so she named the star "little green man No. 1"". Later, Baer found several pulsars, and the signals came from all directions. How did aliens from all walks of life send signals to the earth at the same time? This is obviously unlikely, so temporarily ruled out the possibility that the signals are from aliens. Jocelyn Bell is a fellow of the Royal Society of London pulsar first found after careful analysis, Baer published the unknown objects in "Nature", because the stars continue to emit electromagnetic wave pulse signal, we named it "pulsar". Here's one thing to note, the signals we received on earth were actually sent earlier. Take the "eye" found new pulsars, for example, the two teeth were 15 thousand and 600 light-years away and 4100 light-years, the signal after launch, 15 thousand and 600 years and 4100 years to reach the earth. In 60s 2 search contest last century, radio astronomy is just unfolding era, is the international radio astronomy circles in the feudal lords vying for the throne. For the first time, mankind was curious to look at the universe through the window of electromagnetic waves outside of optics, and everything that was seen was fresh. Baer found a pulsar after the message is sent, suddenly shocked the world, four are found as the twentieth Century one of Astronomy (the other three are quasars, interstellar organic molecules and the microwave background radiation), opens up a new field of research in astronomy and astrophysics, also opened a new runway for the international competition in various countries the. Thanks to the radar technology developed in the Second World War to defend the German air force, radio astronomy technology in the United States, the United Kingdom and its former colony, Australia, is temporarily ahead. To discover 10th anniversary of Pulsars (1977), 149 pulsars have been found in various countries. In 1978, Australia's Moran Gehlaut telescope in "the spring of science" will lead to force, done in one vigorous effort known pulsar more than doubled the number reached 320. However, in the next 20 years, the pace of discovery of new pulsars can only say: in Puerto Rico, neither fast nor slow at that time, the world's largest diameter reached 305 meters of the Arecibo telescope, the United States Green Bank Observatory 9