2020-11-06

More than 240 pulsars have been discovered!”China Sky Eye” strongly supports high-level research

By yqqlm yqqlm

Xinhua News Agency, Beijing, November 5 (Reporters Zhang Quan, Dong Ruifeng) This reporter learned from the National Astronomical Observatory Since the acceptance in January this year, the”China Sky Eye” (FAST) facility has been operating stably and reliably, and a series of major scientific achievements have been made. More than 240 pulsars have been discovered, and more than 40 high-level papers have been published based on the”China Sky Eye” data. . With the help of the”China Sky Eye”, our scientific research team has quickly become the core research force in the field of international rapid radio storms.

The research team of Li Kejia, a professor at Peking University and a researcher at the National Astronomical Observatory, used the”China Sky Eye” to detect a repeat explosion of FRB180301, which was the first in the world. The radiation has very rich polarization characteristics. This observation provides new information on the radiation origin of fast radio storms and shows the role of the magnetosphere in the radiation mechanism of fast radio storms.

Dr. Lin Lin from Beijing Normal University, Dr. Chunfeng Zhang from Peking University, and Dr. Pei Wang from the National Astronomical Observatory used the”Chinese Sky Eye” to perform multi-band multi-band detection of the soft gamma burst source SGR 1935+2145 of the Milky Way magnetar Joint observation. While the high-energy outbreak of SGR 1935+2145 occurred, with the help of the ultra-high sensitivity of the”China Sky Eye”, the most stringent restrictions on radio wave flow have been so far. This result shows that there is a weak correlation between SGR and FRB outbreaks, and the occurrence of FRB from magnetar outbreaks must rely on extremely special physical conditions.

The above-mentioned papers were officially published in the international scientific journal Nature on October 29 and November 5, Beijing time.

In the past year, the”China Sky Eye” has observed and served more than 5,200 machine hours, nearly twice the expected design target. In February this year, the”China Sky Eye” team overcame the impact of the epidemic and officially launched 5 priority and major projects selected by the scientific committee. Nearly 100 scientists began to use and process the”China Sky Eye” scientific data.

According to the introduction, the super sensitivity of the”China Sky Eye” has great potential for radio transient sources. It is expected to realize the detection of gravitational waves in the nanohertz within a short period of time and capture the effects of the Big Bang period. Primitive gravitational waves provide data support for studying the physical process at the beginning of the Big Bang. At the same time, it has the ability to extend my country’s deep-space exploration and communication capabilities to the edge of the solar system to meet major national strategic needs.

Source:Xinhua News Agency