Results 51 to 60 of about 115,932 (268)

Discovery of Small Ultra-short-period Planets Orbiting KG Dwarfs in Kepler Survey Using GPU Phase Folding and Deep Learning Detection System [PDF]

open access: yesarXiv, 2023
Of over 5,000 exoplanets identified so far, only a few hundred possess sub-Earth radii. The formation processes of these sub-Earths remain elusive, and acquiring additional samples is essential for investigating this unique population. In our study, we employ the GPFC method, a novel GPU Phase Folding algorithm combined with a Convolutional Neural ...
arxiv  

A novel hybrid algorithm of GSA with Kepler algorithm for numerical optimization

open access: yesJournal of King Saud University: Computer and Information Sciences, 2015
It is now well recognized that pure algorithms can be promisingly improved by hybridization with other techniques. One of the relatively new metaheuristic algorithms is Gravitational Search Algorithm (GSA) which is based on the Newton laws. In this paper,
Soroor Sarafrazi   +2 more
doaj   +1 more source

Transit Timing Observations from Kepler: III. Confirmation of 4 Multiple Planet Systems by a Fourier-Domain Study of Anti-correlated Transit Timing Variations [PDF]

open access: yes, 2012
We present a method to confirm the planetary nature of objects in systems with multiple transiting exoplanet candidates. This method involves a Fourier-Domain analysis of the deviations in the transit times from a constant period that result from ...
Agol   +79 more
core   +5 more sources

El platonisme de Johannes Kepler

open access: yesEnrahonar: Quaderns de Filosofia, 1995
L'article analitza el contingut de dues obres de Kepler, Mysterium Cosmographicum i Harmonice Mundi amb el propòsit d'esbrinar la qüestió del platonisme de Kepler, una qüestió que, d'acord amb el punt de vista d'aquest treball, necessita qualificació. És
J.V. Field
doaj   +1 more source

Long-Period Giant Companions to Three Compact, Multiplanet Systems [PDF]

open access: yes, 2019
Understanding the relationship between long-period giant planets and multiple smaller short-period planets is critical for formulating a complete picture of planet formation. This work characterizes three such systems. We present Kepler-65, a system with
Boisvert, John H.   +9 more
core   +3 more sources

The Host Stars of Keplers Habitable Exoplanets: Superflares, Rotation and Activity [PDF]

open access: yes, 2015
We embark on a detailed study of the lightcurves of Keplers most Earth-like exoplanet host stars using the full length of Kepler data. We derive rotation periods, photometric activity indices, flaring energies, mass loss rates, gyrochronological ages, X-ray luminosities and consider implications for the planetary magnetospheres and habitability ...
arxiv   +1 more source

A Formulation of the Kepler Conjecture [PDF]

open access: yesDiscrete & Computational Geometry, 2006
23 pages.
Samuel P. Ferguson, Thomas C. Hales
openaire   +4 more sources

A Technique for Extracting Highly Precise Photometry for the Two-Wheeled Kepler Mission [PDF]

open access: yesPASP Vol. 126, No. 944 (October 2014), pp. 948-958, 2014
The original Kepler mission achieved high photometric precision thanks to ultra-stable pointing enabled by use of four reaction wheels. The loss of two of these reaction wheels reduced the telescope's ability to point precisely for extended periods of time, and as a result, the photometric precision has suffered.
arxiv   +1 more source

Breast satisfaction in adult women with Turner syndrome—An international survey employing the BREAST‐Q questionnaire

open access: yesClinical Endocrinology, Volume 98, Issue 1, Page 82-90, January 2023., 2023
Abstract Objective Turner syndrome (TS) is associated with short stature, delayed puberty, primary ovarian insufficiency, and other features. Most girls with TS require oestrogen replacement for pubertal induction. There is paucity of data in adult TS on pubertal outcomes, including breast satisfaction.
Jan Idkowiak   +5 more
wiley   +1 more source

Elementary Solution of Kepler Problem (and a few other problems) [PDF]

open access: yesarXiv, 2021
We present a simple method to obtain the solution of a few orbital problems: the Kepler problem, the modified Kepler problem by the addition of an inverse square potential and linear force.
arxiv  

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