FRB20200317A! The first rapid radio burst discovered by a local unit in Guizhou!

Source: Guizhou DailyRecently,The astronomical data processing team led by Professor Xie Xiaoyao from Guizhou Normal University at the Key Laboratory of Information and Computational Sciences in Guizhou Province has discovered a new case of rapid radio burst named FRB20200317A using China's Tianyan FAST.The relevant results were released to international peers on September 23, 2023 through the Astronomer's Telegram

Source: Guizhou Daily

Recently,The astronomical data processing team led by Professor Xie Xiaoyao from Guizhou Normal University at the Key Laboratory of Information and Computational Sciences in Guizhou Province has discovered a new case of rapid radio burst named FRB20200317A using China's Tianyan FAST.The relevant results were released to international peers on September 23, 2023 through the Astronomer's Telegram.

The observation data comes from the FAST priority major project "Simultaneous Scanning of Multiple Scientific Objectives" (CRAFTS) led by FAST Chief Scientist Li Di. The data processing team independently developed an efficient single pulse search and recognition program based on the Haiguang (deep computing unit) DCU, and systematically processed the CRAFTS sky survey data. They discovered this remote fast radio storm with a dispersion value of 850.7. The dispersion of the fast radio storm refers to the time delay of radio waves at different frequencies reaching Earth, which reflects how many free electrons the radio wave passes through during its propagation.

According to astronomers' estimates, this mysterious cosmic explosion occurred 6 billion years ago and was captured by the Chinese celestial eye on March 17, 2020.This is the first case of a rapid radio burst discovered by a local unit in Guizhou through cutting-edge scientific research relying on national large-scale devices.

Since 1987, some radio telescopes on Earth have been detecting brief and intense radio wave pulses from distant universes, known as Fast Radio Bursts (FRBs). Fast Radio Burst (FRB), as a mysterious explosive phenomenon in the universe, can release energy that the sun can only radiate for about a whole year in one millisecond. The research process of FRB is not long. In 2007, the scientific community first confirmed its existence. In 2016, astronomers detected the first case of repeated bursts of FRB, breaking people's traditional understanding of FRB - there was also a type of fast radio burst that could erupt multiple times, making it one of the latest research hotspots in astronomy.

The "Multiple Scientific Objectives Simultaneous Sky Survey", abbreviated as "CRAFTS", is based on FAST's sensitivity and a series of original technologies, achieving the world's first sky survey mode that can simultaneously observe atomic hydrogen and pulsars, and search for extraterrestrial civilizations. As the world's largest single aperture radio telescope, the "China Sky Eye" began searching for rapid radio bursts a few years ago. In 2020, the priority major project of "Multiple Scientific Objectives Simultaneously Surveying the Sky" announced four new non repetitive fast radio bursts discovered based on debugging data. These fast radio bursts were the first batch of fast radio bursts discovered by "China Tianyan", filling the sample gap of fast radio bursts in high dispersion and low flow flux.

It is reported that Guizhou Normal University jointly established the "FAST Early Science Data Center" with the National Astronomical Observatory in 2014, and jointly established the "China Tianyan Joint Research Center Guizhou Normal University Sub center" in April 2021. The Guizhou Provincial Key Laboratory of Information and Computational Science of Guizhou Normal University focuses on the calculation and processing of astronomical big data and has achieved fruitful results. With the development of the CRAFTS sky survey, new scientific discoveries continue to emerge. In addition, the Network Center of the Chinese Academy of Sciences, Zhijiang Laboratory, and the National Future Network (CENI) provide a development platform (blinkverse) and data transmission links, which provide core assistance for FAST to produce more scientific achievements.

Author: Chen Zujia, Tianyan News reporter from Guizhou Daily

Editor: Wang Shuai

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