Shulou(Shulou.com)11/24 Report--

On October 2, CTOnews.com, the National Astronomical Observatory of the Chinese Academy of Sciences announced that the "Wang Shouzhen Sky Survey commando" led by Han Jinlin, a researcher at the station, had recently made a new discovery using a 500m aperture spherical radio telescope (CTOnews.com Note: known as the "Chinese Heavenly Eye").

Chinese Sky Eye has discovered 76 new occasional pulsars in the Galactic Pulsar Snapshot Survey, including the weakest pulsars known to mankind. These dim and weak celestial bodies radiate pulses only occasionally in a few rotation periods, which are called "rotating radio temporary sources (RAAT)" internationally.

The ▲ map is from the National Astronomical Observatory of the Chinese Academy of Sciences. According to the introduction below, the commando used the "Chinese Heavenly Eye" to make high-sensitivity observations of 59 rotating radio temporary sources known in the world, and finally confirmed them as occasional pulsars. These new findings and related research papers have been published today in the Chinese International Astronomical Journal Astronomical and Astrophysical Research (RAA) in the form of a cover paper.

Researcher Han Jinlin said the study is of great significance in understanding the dense debris and radiation characteristics of dead stars in the Milky way.

The RRAT discovered earlier is very special. Unlike most pulsars with continuous radiation pulses, they usually emit a pulse occasionally in many cycles, so it is difficult to capture it in a normal pulsar search system. It is necessary to detect a pulse from the data observed by a high-sensitivity telescope and dig out a common period after several pulses are detected.

CTOnews.com previously reported that in mid-August, Chinese scientific research team used the "Chinese Sky Eye" FAST to detect a new form of pulsar radiation: a group of extremely weak narrow pulses were detected from a pulsar that was originally thought to be "off". The relevant results were published in the international academic journal Natural Astronomy on August 18.

At present, the "Chinese Sky Eye" has entered a period of explosive results, and several important achievements have been released this year, including the discovery of a pulsar binary system with an orbital period of only 53 minutes, and the detection of key evidence for the existence of Nahertz gravitational waves. Continue to maintain China's international leading position in low-frequency radio astronomy.

By late July this year, the 500m aperture spherical Radio Telescope (FAST), the world's largest and most sensitive single-aperture radio telescope built by China, had discovered more than 800 new pulsars, which is more than three times the total number of pulsars found by other telescopes in the world at the same time.

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