Results 41 to 50 of about 7,393,464 (385)
The Pseudosynchronization of Binary Stars Undergoing Strong Tidal Interactions [PDF]
, 2017 Eccentric binaries known as heartbeat stars experience strong dynamical tides as the stars pass through periastron, providing a laboratory to study tidal interactions. We measure the rotation periods of 24 heartbeat systems, using the Kepler light curves
Fuller, Jim +5 more
core +3 more sources
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2011 At the beginning of this century, particularly after 2003, decline of Picea abies occurred at Forest District Jablunkov in the Silesian Beskids. This decline is of the complex character disease caused by the synergetic effects of abiotic, biotic and ...
Petr Čermák, Otakar Holuša
doaj +1 more source
On the Rotation Period and Shape of the Hyperbolic Asteroid 1I/‘Oumuamua (2017 U1) from Its Lightcurve [PDF]
, 2017 We observed the newly discovered hyperbolic minor planet 1I/‘Oumuamua (2017 U1) on 2017 October 30 with Lowell Observatory’s 4.3 m Discovery Channel Telescope. From these observations, we derived a partial lightcurve with a peak-to-trough amplitude of at
M. Knight +7 more
semanticscholar +1 more source
The Astrophysical Journal, 2023 Stellar rotation is crucial for studying stellar evolution, since it provides information about age, angular momentum transfer, and magnetic fields of stars.
Alexandre Araújo, Adriana Valio
doaj +1 more source
Silva Fennica, 2023 This study’s aim was to calculate the weathering rates of Ca and Mg for five boreal forest soils in southern Finland on granitic and gabbro containing bedrock. The effect of mineralogy on the total concentrations of Ca and Mg in soil and weathering rates
Antti-Jussi Lindroos, Hannu Ilvesniemi
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Modeling the Rising Tails of Galaxy Rotation Curves
Galaxies, 2019 It is well known, but under-appreciated in astrophysical applications, that it is possible for gravity to take on a life of its own in the form of Weyl-curvature-only metrics (note that we are referring to the Weyl-only solutions of ordinary General ...
Fan Zhang
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Rotation of Periodic Strings and Short Superstrings [PDF]
BRICS Report Series, 1996 This paper presents two simple approximation algorithms for the shortest superstring problem, with approximation ratios 2.67 and 2.596, improving the best previously published 2.75<br />approximation. The framework of our improved algorithms is similar to that of previous algorithms in the sense that they construct a superstring by computing some
Breslauer, D., Jiang, T., Jiang, Z.
openaire +3 more sources
THE ROTATION PERIOD AND MAGNETIC FIELD OF THE T DWARF 2MASSI J1047539+212423 MEASURED FROM PERIODIC RADIO BURSTS [PDF]
, 2015 Periodic radio bursts from very low mass stars and brown dwarfs simultaneously probe their magnetic and rotational properties. The brown dwarf 2MASSI J1047539+212423 (2M 1047+21) is currently the only T dwarf (T6.5) detected at radio wavelengths ...
P. G. Williams, E. Berger
semanticscholar +1 more source
Frontiers in Sustainable Food Systems, 2023 The practice of crop rotation is known to significantly influence soil nutrient dynamics, depending on the type of rotation and the crops involved. As such, a field study was conducted to find out the effect of continuous cassava-maize rotation, where ...
Eric Owusu Adjei +5 more
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Rotation and differential rotation of active Kepler stars [PDF]
, 2013 We present rotation periods for thousands of active stars in the Kepler field derived from Q3 data. In most cases a second period close to the rotation period was detected, which we interpreted as surface differential rotation (DR).
Basri, Gibor +2 more
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