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Searching for maser emissions in the Sagittarius stellar stream

Maser emissions, or "cosmic lasers," are produced by amplification of stimulated emissions in the interstellar and circumstellar medium. Bright and compact maser sources are ideal targets for high-accuracy astrometry in the study of the Milky Way's kinematics. A team from the Chinese Academy of Sciences'...

Researchers study active galactic nucleus during its outburst phase

Dr. Li Shasha and Dr. Feng Haicheng of the Chinese Academy of Sciences' Yunnan Observatories, along with their collaborators, discovered evidence for the kinematic evolution of the broad-line region of active galactic nuclei. On August 31, their findings were published in The Astrophysical Journal. During 2020-2021,...

UPK 39 and UPK 41 form a primordial binary open cluster, study finds

Astronomers studied three open clusters near the Aquila Rift cloud using data from the European Space Agency's Gaia satellite and the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST). They discovered that two of them, UPK 39 and UPK 41, form a primordial binary...

How gas nanobubbles accelerate solid-liquid-gas reactions

Solid-liquid-gas reactions are common in a variety of natural and industrial phenomena, including hydrogen-oxygen fuel cell reactions, heterogeneous catalysis, and metal corrosion in ambient environments. However, the transport of gas in liquids and the subsequent reactions at triple-phase interfaces are poorly understood. A joint research...

Researchers investigate the mass-ratio distribution of binaries identified from the LAMOST-MRS survey

The majority of what we know about the universe comes from star studies, and roughly half of the stars are discovered to be in binary systems. The close binary interaction between the stellar components may alter the stars' fate. A team of researchers from the...

Soil temperature drives nitric oxide emission

Nitric oxide (NO) is a significant contributor to air pollution, and forest soil is a significant source of NO emissions. However, due to a lack of high-frequency NO emission measurements, there are significant uncertainties in global forest soil NO emission. In Northeast China, forest soil...