E-mail lunthesis@163.com Phone 0551-65179860-203

China's FAST telescope spots huge atomic gas structure

Pub Date:2022-10-21 09:07 Source:Xinhua

BEIJING, Oct. 20 (Xinhua) -- The "China Sky Eye," also known as the Five-hundred-meter Aperture Spherical Radio Telescope (FAST), has spotted a huge atomic gas structure in the vicinity of a galaxy group.

The find came as the world's most sensitive radio telescope "cast its glance" at Stephan's Quintet, a visual grouping of five galaxies of which four form a compact galaxy group.

The linear scale of the atomic hydrogen structure reaches some two million light-years or 0.6 megaparsecs, the largest one of its kind ever discovered in the universe, according to the study published on Wednesday in the journal Nature.

Also, the structure encompasses an extended source of size of approximately 0.4 megaparsecs associated with the debris field, and a curved diffused feature of a length of around 0.5 megaparsecs attached to the southern edge of the extended source, according to the study.

The researchers said that the diffused feature was probably produced by tidal interactions in early stages of the formation of Stephan's Quintet.

The results provided new information enhancing our understanding of gas evolution in the universe. However, it is still not clear how such low-density hydrogen gas can survive ionization by the intergalactic ultraviolet background on such a long time scale, according to the study.

Meanwhile, NASA's James Webb Space Telescope recently captured an image of Stephan's Quintet, showing in detail how the interacting galaxies trigger star formation in each other and how gas in galaxies is being disturbed.

Editor:Zheng Chen

Related News
- Report charts way to energy security, greener future    2022-10-20 09:23
- Measures in the pipeline to ensure energy supply    2022-10-20 09:23
- Systematic test of maglev running in tube successful    2022-10-19 10:16
- 'Earth lab' to assist green transition    2022-10-19 10:14
photo  >>
Night economy booms across China during Labor Day holiday
High-speed train travel through picturesque rural area in Jixi, Anhui
Video  >>
When Hui cuisine meets pizza
The 2nd China (Anhui) Science and Technology Innovation Achievement Transformation Fair exhibitions bilingual promotion| Online Exhibition Area
People  >>
Transnational couple revives ancient dwelling in east China
Sixty years on, hero soldier remains a role model in China
Travel  >>
Huangshan listed among China's Top 10 scenic cities
China expects travel spree during May Day holiday
Contact Us
Copyright ©2000-2021 anhuinews.com All rights reserved. Reproduction in whole or in part without permission is prohibited. 皖B2-20080023-7