Results 11 to 20 of about 83,906 (254)
The Past Orbit of Halley's Comet [PDF]
Monthly Notices of the Royal Astronomical Society, 1972 I have re-examined the records in the Chinese“Standard Histories”on this famous object, including one set of relatively precise observations made in the year 837 A.D., which has only recently become available in an English translation (Ho 1962). This set, when properly interpreted, consists of the comet’s right ascension on 10 specified dates, given to
T. Kiang
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UV-Vis Spectra of Carbonic Acid: Rationalizing Experimental Redshifts between Monomer and Bulk based on (H<sub>2</sub>CO<sub>3</sub>)<sub>n</sub> Calculations. [PDF]
ChemphyschemIn bulk carbonic acid (e.g., in interstellar icy dust grains) cluster formation produces two distinct UV‐Vis spectral features redshifted by ≈2 eV (25 nm) and by ≈5 eV (80 nm) compared to gas phase single molecule carbonic acid 's adiabatic ionization energy. Theory and experiment were used to investigate the origin of these shifts.
Dinu DF +7 more
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The Effect of a Trans-Plutonian Planet on Halley's Comet [PDF]
, 1972 Joseph L. Brady
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Eponyms in science terms (Epistemological aspect) [PDF]
SHS Web of Conferences, 2019 The paper is devoted to eponyms used in scientific discourse. The concept of the eponym is borrowed from linguistic research. The term is understood from epistemological standpoint.
Koshlakov Dmitriy +3 more
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Annual Meeting Optical Society of America, 1985 Halley’s Comet has been under surveillance since it was spotted with an advanced detector on the 200-in. telescope in October 1982. It has since shown unexpected variations. We want to know the nature of the frozen nucleus of the comet and the mostly unidentified parent molecules that compose it.
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Solitary and shocklike wave solutions for the Gardner equation in dusty plasmas
Journal of Taibah University for Science, 2020 The propagation of dust ion acoustic waves (DIAWs) for two-temperature ions with isothermal electrons in dusty plasmas has been investigated. Using the reductive perturbation method, the Gardner equation is derived.
F. M. Allehiany +3 more
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Halley's comet: Prospects for Giotto and Halley [PDF]
Nature, 1985 M. K. Wallis
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Earth and Space Science, Volume 10, Issue 9, September 2023., 2023 Abstract Future exploration efforts of the Moon, Mars, and other bodies are poised to focus heavily on persistent and sustainable survey and research efforts, especially given the recent interest in a long‐term sustainable human presence at the Moon.
Prabal Saxena +14 more
wiley +1 more source
Spectral Contamination of the 6300 Å Emission in Single‐Etalon Fabry‐Perot Interferometers
Journal of Geophysical Research: Space Physics, Volume 128, Issue 9, September 2023., 2023 Abstract The spectral line profile of the atomic oxygen O1D2—3P2 transition near 6300 Å in the airglow has been used for more than 50 years to extract neutral wind and temperature information from the F‐region ionosphere. A new spectral model and recent samples of this airglow emission in the presence of the nearby lambda‐doubled OH Meinel (9‐3) P2(2.5)
R. B. Kerr +11 more
wiley +1 more source