Results 21 to 30 of about 132,526 (321)

Solar System Science with the Orbiting Astronomical Satellite Investigating Stellar Systems (OASIS) Observatory

Space Science Reviews, 2022
The overarching theme of the Orbiting Astronomical Satellite for Investigating Stellar Systems (OASIS), an Astrophysics MIDEX-class mission concept, is Following water from galaxies, through protostellar systems, to Earth’s oceans.
C. Anderson, N. Biver, G. Bjoraker, T. Cavalié, G. Chin, M. Disanti, P. Hartogh, A. Tielens, C. Walker   +8 more
semanticscholar   +1 more source

Radio Astronomical Tools for the Study of Solar Energetic Particles I. Correlations and Diagnostics of Impulsive Acceleration and Particle Propagation

Frontiers in Astronomy and Space Sciences, 2021
Solar energetic particles (SEPs) are sporadically ejected from the Sun during flares and coronal mass ejections. They are of major astrophysical interest, because the proximity of the Sun allows for detailed multi-messenger studies.
K. Klein
semanticscholar   +1 more source

An Improved Range-Searching Initial Orbit-Determination Method and Correlation of Optical Observations for Space Debris

Applied Sciences, 2023
The Changchun Observatory of the National Astronomical Observatories, Chinese Academy of Sciences, and the Shanghai Astronomical Observatory are used to generate very short arc (VSA) angle observations of objects in low Earth orbit (LEO) and ...
Xiangxu Lei, Shengfu Xia, Hongkang Liu, Xiaozhen Wang, Zhenwei Li, Baomin Han, Jizhang Sang, You Zhao, Hao Luo   +8 more
semanticscholar   +1 more source

Flight Experiment Validation of Altitude Measurement Performance of MOSIR on Tianwen-1 Orbiter

Remote Sensing, 2021
The MOSIR (Mars Orbiter Subsurface Investigation Radar) is one of the scientific payloads carried by the Tianwen-1 orbiter. MOSIR conducted a ground experiment in the desert near Dengkou County, northern China, before the launch of the Tianwen-1 ...
Tiansheng Hong, Yan Su, Mingyi Fan, Shun Dai, Peng Lv, Chunyu Ding, Zongyu Zhang, Ruigang Wang, Chendi Liu, Wei Du, Shuning Liu, Chunlai Li   +11 more
doaj   +1 more source

Data Pre-Processing and Signal Analysis of Tianwen-1 Rover Penetrating Radar

Remote Sensing, 2023
The Rover-mounted Subsurface Penetrating Radar (RoSPR) is one of the scientific payloads onboard China’s first independent Mars exploration mission, Tianwen-1.
Shuning Liu, Yan Su, Bin Zhou, Shun Dai, Wei Yan, Yuxi Li, Zongyu Zhang, Wei Du, Chunlai Li   +8 more
doaj   +1 more source

Radio Astronomical Tools for the Study of Solar Energetic Particles II.Time-Extended Acceleration at Subrelativistic and Relativistic Energies

Frontiers in Astronomy and Space Sciences, 2021
Solar energetic particle (SEP) events are commonly separated in two categories: numerous “impulsive” events of relatively short duration, and a few “gradual” events, where SEP-intensities may stay enhanced over several days at energies up to several tens
K. Klein
semanticscholar   +1 more source

SQUAB—I: The First Release of Strange QUasar Candidates With ABnormal Astrometric Characteristics From Gaia EDR3 and SDSS

Frontiers in Astronomy and Space Sciences, 2022
Given their extremely large distances and small apparent sizes, quasars are generally considered as objects with near-zero parallax and proper motion.
Qi-Qi Wu, Qi-Qi Wu, Shi-Long Liao, Shi-Long Liao, Xiang Ji, Xiang Ji, Zhao-Xiang Qi, Zhao-Xiang Qi, Zhen-Ya Zheng, Zhen-Ya Zheng, Ru-Qiu Lin, Ru-Qiu Lin, Ying-Kang Zhang, Ying-Kang Zhang, Tao An, Tao An   +15 more
doaj   +1 more source

Multi-Wavelength Monitoring of the Changing-Look AGN NGC 2617 during State Changes [PDF]

, 2017
Optical and near-infrared photometry, optical spectroscopy, and soft X-ray and UV monitoring of the changing-look active galactic nucleus NGC 2617 show that it continues to have the appearance of a type-1 Seyfert galaxy.
A. M. Tatarnikov, C. M. Gaskell, D. A. H. Buckley, D. Kasper, E. S. Gorbovskov, H. Levato, K. L. Malanchev, Kh. M. Mikailov, M. A. Burlak, M. B. Brotherton, M. Serra-Ricart, N. A. Huseynov, N. I. Shatsky, P. Du, R. Podesta, R. Rebolo, S. S. Tsygankov, V. G. Metlov, V. L. Oknyansky, V. M. Lipunov, X. Chen   +20 more
core   +1 more source

The Data Big Bang and the Expanding Digital Universe: High-Dimensional, Complex and Massive Data Sets in an Inflationary Epoch [PDF]

, 2010
Recent and forthcoming advances in instrumentation, and giant new surveys, are creating astronomical data sets that are not amenable to the methods of analysis familiar to astronomers.
McCollum, Bruce, Pesenson, Isaac Z., Pesenson, Meyer Z.   +2 more
core   +4 more sources

Improvement of Lunar Surface Dating Accuracy Utilizing Crater Degradation Model: A Case Study of the Chang’e-5 Sampling Area

Remote Sensing, 2023
Taking the Chang’e-5 (CE-5) sampling area as an example, this study carried out an investigation on improving the crater size-frequency distribution (CSFD) dating accuracy of lunar surface geologic units based on the crater degradation model.
Feiyue Zhao, Wei Zuo, Chunlai Li
doaj   +1 more source