165438+1On October 4th, the National Astronomical Observatory of Chinese Academy of Sciences held a press conference. Since the acceptance in June, 5438+this year 10, the 500-meter spherical radio telescope (FAST) has been running stably and reliably, and a series of important scientific achievements have been made. Based on the data of the 500-meter spherical radio telescope (FAST), more than 240 pulsars have been discovered and more than 40 high-level papers have been published. With the help of the "500-meter spherical radio telescope (FAST)", China's scientific research team has quickly become the core research force in the field of international rapid radio bursts.
In the past 1 year, the 500-meter spherical radio telescope (FAST) has observed more than 5,200 machine hours, almost twice the expected design target. In February this year, the team of the 500-meter spherical radio telescope (FAST) overcame the epidemic and officially launched five priority and major projects selected by the Scientific Committee. Nearly a hundred scientists began to use and process the scientific data of the 500-meter spherical radio telescope (FAST).
According to reports, the super sensitivity of the "500-meter spherical radio telescope (FAST)" makes it have great potential in the field of radio transient sources, and it is expected to realize the detection of nanohertz gravitational waves in a short time and capture the original gravitational waves during the Big Bang, providing data support for studying the physical process at the original moment in the Big Bang. At the same time, it has the ability to extend China's deep space exploration and communication capabilities to the edge of the solar system to meet the country's major strategic needs.
Extended data
China detected repeated bursts of fast radio bursts.
Professor Peking University and researcher Li Kejia of the National Astronomical Observatory have detected 1 case of FAST radio burst FRB 18030 1 case in the world by using the "500-meter spherical radio telescope". This kind of repeated explosion radiation has very rich polarization characteristics, which is the first time in the world. This observation provides new information about the radiation origin of fast radio bursts and shows the role of magnetosphere in the radiation mechanism of fast radio bursts.
Dr. Lin Lin from Beijing Normal University, Dr. Zhang Chunfeng from Peking University, Dr. Wang Pei from the National Astronomical Observatory and other joint research teams used the "500-meter spherical radio telescope (FAST)" to carry out multi-band joint observation on SGR 1935+2 145, the source of soft gamma repetitive bursts in the Milky Way. While SGR 1935+2 145 bursts with high energy, the ultra-high sensitivity of the "500-meter spherical radio telescope (FAST)" has given the most stringent restrictions on the radio band traffic so far. The results show that the correlation between SGR and FRB bursts is very weak, and the generation of FRB by magnetar bursts must depend on extremely special physical conditions.
The above papers were published in the international scientific journal Nature on1October 29th 165438 and1October 5th, respectively.
China Economic Weekly's "500-meter spherical radio telescope (FAST)" has discovered more than 240 pulsars, which can extend China's deep space exploration capability to the edge of the solar system.