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Nov 03, 2023

Researchers develop new method for measuring and correcting the pointing error of radio telescopes

The accurate measurement and compensation of the antenna structure deformation are helpful to improve the pointing accuracy of the radio telescope and improve the observation performance .Contact : XU QianXinjiang Astronomical Observator...The accurate measurement and compensation of the antenna structure deformation are helpful to improve the pointing accuracy of the radio telescope and improve the observation performance.The deformation of alidade is one of the main reas...
Oct 19, 2023

Study provides deeper insight into artificial intelligence object detection and segmentation

In many engineering fields of data processing , such as deep space object detection and tracking .In this study , the detection is not carried out completely after optimization on the reconstructed data , but rather recovers edge informa...In many engineering fields of data processing, such as deep space object detection and tracking, people need to detect features, such as edge and shape information of the asteroid targets and celestial surfaces, from incomplete measureme...
Oct 17, 2023

The measurement of the magnetic field in the eclipse medium of a spider pulsar PSR J2051-0827

Spider pulsars are a subclass of millisecond pulsar binary systems with low mass companions in short-period orbits. In spider pulsars, the pulsar wind and electromagnetic emission ablate and may destroy the companion. The study of spider...Spider pulsars are a subclass of millisecond pulsar binary systems with low mass companions in short-period orbits. In spider pulsars, the pulsar wind and electromagnetic emission ablate and may destroy the companion. The study of spider...
Oct 08, 2023

Researchers found correlations between multiband light curves of PKS 1510-089

Currently , very high-energy γ - rays have been detected in 67 BL Lac objects .These include observations in the gamma-ray band conducted by the space-based Fermi Large Area Telescope , optical and near-infrared bands observation by the...Currently, very high-energy γ-rays have been detected in 67 BL Lac objects; very high-energy γ-rays have only been detected in only 9 flat-spectrum radio quasars (FSRQs). This is because there is less absorbing medium at the TeV energ...
Sep 28, 2023

Researchers Discovered Annular Distribution of SiC2 towards carbon-rich AGB stars by ALMA Observations

The circumstellar envelopes ( CSE ) of asymptotic giant branch ( AGB ) stars contain a large number of molecules ( 105 have been detected ) , which account for about one-third of all molecules discovered in interstellar space ( over.Chin...The circumstellar envelopes (CSE) of asymptotic giant branch (AGB) stars contain a large number of molecules (105 have been detected), which account for about one-third of all molecules discovered in interstellar space (over 300). Studyi...
Sep 28, 2023

Monitoring of Radio Galaxy M87 Confirms Black Hole Spin

The nearby radio galaxy M87 , located 55 million light-years from the Earth and harboring a black hole 6.5 billion times more massive than the Sun , exhibits an oscillating jet that ？ swings up and down with an amplitude of about 10 deg...The nearby radio galaxy M87, located 55 million light-years from the Earth and harboring a black hole 6.5 billion times more massive than the Sun, exhibits an oscillating jet that swings up and down with an amplitude of about 10 degrees,...

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