Results 1 to 10 of about 15,045 (53)
AN IMPROVED PHOTOCLINOMETRY TECHNIQUE FOR SURFACE RELIEF RETRIEVAL FROM IMAGES: ERROR LEVELS FOR HEIGHT AND SLOPE ESTIMATES [PDF]
Radio Physics and Radio Astronomy, 2023 Subject and Purpose. Computer simulation methods are used for investigating the errors that arise in the course of retrieval, by means of an improved photoclinometry technique, of planetary surface reliefs from sets of their photo images.
I. A. Dulova, N. V. Bondarenko
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POLARIZATION AND FREQUENCY SELECTIVE CHARACTERISTICS OF A CHIRAL METASURFACE COMPOSED OF PERIODICALLY ARRANGED SQUARE DIELECTRIC HELICES [PDF]
Radio Physics and Radio Astronomy, 2023 Subject and Purpose. The present study is concerned with the linearly polarized electromagnetic wave transmission through a chiral metasurface composed of periodically assembled square dielectric helices.
V. V. Yachin +4 more
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LASER CAVITY WITH A GRADUALLY EXPANDING RADIATION BEAM IN THE ACTIVE MEDIUM [PDF]
Radio Physics and Radio Astronomy, 2023 Subject and Purpose. Increasing the operational efficiency of laser generators and the amount of their radiated power is an important task in laser development, which can be approached to in a number of alternative ways.
M. I. Dzyubenko +3 more
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A Catalogue of Meteor Showers and Storms in Korean, Japanese, Chinese Histories [PDF]
Journal of Astronomy and Space Sciences, 2004 We made a robust catalogue of reliable records of meteor showers and storms recorded in Korean, Japanese, and Chinese chronicles. In our new catalogue, there are 35 Korean records, 29 Japanese records, and 93 Chinese records.
Sang-Hyeon Ahn
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Three Warm Jupiters around Solar-analog Stars Detected with TESS
The Astronomical Journal, 2023 We report the discovery and characterization of three giant exoplanets orbiting solar-analog stars, detected by the TESS space mission and confirmed through ground-based photometry and radial velocity measurements taken at La Silla observatory with FEROS.
Jan Eberhardt +34 more
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The Planetary Science Journal, 2023 NASA's Lucy mission is designed to better understand the unique population of Trojan asteroids. Trojans were probably captured in Jupiter's L4 and L5 points early in the solar system's evolution and little altered since then.
Stuart J. Robbins +9 more
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Chemical Homogeneity of Wide Binary Systems: An Approach from Near-Infrared Spectroscopy
The Astronomical Journal, 2023 Wide binaries, with separations between the two stars from a few au to more than several thousand au, are valuable objects for various research topics in Galactic astronomy.
Dongwook Lim +4 more
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The Astronomical Journal, 2023 We present the results for the detectability of the O _2 and O _3 molecular species in the atmosphere of an Earth-like planet using reflected light at visible wavelengths. By quantifying the detectability as a function of the signal-to-noise ratio (S/N),
Natasha Latouf +10 more
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Constraining the Structure under Lunar Impact Basins with Gravity
The Planetary Science Journal, 2023 The lunar gravity field is used to estimate and constrain the depth of mass anomalies under 19 major lunar impact basins. We use radial gravitational spectra, consisting of accelerations computed either per spherical harmonic degree or cumulatively, at ...
David E Smith +3 more
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The Planetary Science Journal, 2023 In the event of a potentially catastrophic asteroid impact, with sufficient warning time, deploying a nuclear device remains a powerful option for planetary defense if a kinetic impactor or other means of deflection proves insufficient.
Mary T. Burkey +5 more
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