Long-period nutational-precessional motions of the instantaneous Earth rotation pole
Учёные записки Казанского университета: Серия Физико-математические науки, 2020 The influence of the rotational regime on real long-period nutational-precessional motions of the instantaneous pole of the Earth’s rotation is considered. The solar magnetospheric (through changes in the angular velocity of rotation) mechanism of action
V.Yu. Belashov +2 more
doaj +1 more source
Limiting rotational period of neutron stars [PDF]
Physical Review D, 1992 Pulsars have been identified with the theoretical objects called neutron stars. The identification is convincing—but not proved. The short rotational periods of millisecond pulsars inform us that the average density (and, therefore, the central density) must be very high—higher than the density of nuclei (5.8).
openaire +3 more sources
Rotation period distribution of CoRoT and Kepler Sun-like stars [PDF]
, 2015 We study the distribution of the photometric rotation period (Prot), which is a direct measurement of the surface rotation at active latitudes, for three subsamples of Sun-like stars: one from CoRoT data and two from Kepler data.
I. Leão +11 more
semanticscholar +1 more source
Surprising variations in the rotation of the chemically peculiar stars CU Virginis and V901 Orionis [PDF]
, 2011 CU Vir and V901 Ori belong among these few magnetic chemically peculiar stars whose rotation periods vary on timescales of decades. We aim to study the stability of the periods in CU Vir and V901 Ori using all accessible observational data containing ...
Abt +54 more
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DISCOVERY OF ROTATIONAL MODULATIONS IN THE PLANETARY-MASS COMPANION 2M1207b: INTERMEDIATE ROTATION PERIOD AND HETEROGENEOUS CLOUDS IN A LOW GRAVITY ATMOSPHERE [PDF]
, 2015 Rotational modulations of brown dwarfs have recently provided powerful constraints on the properties of ultra-cool atmospheres, including longitudinal and vertical cloud structures and cloud evolution.
Yifan Zhou +4 more
semanticscholar +1 more source
Thermophysical Investigation of Asteroid Surfaces. II. Factors Influencing Grain Size
The Planetary Science Journal, 2022 Asteroid surfaces are subjected to mechanical weathering processes that result in the development and evolution of regolith. Two proposed mechanisms—impact bombardment and thermal fatigue—have been proposed as viable and dominant weathering processes ...
Eric M. MacLennan, Joshua P. Emery
doaj +1 more source
GENERALIZED INVESTIGATION OF THE ROTATION–ACTIVITY RELATION: FAVORING ROTATION PERIOD INSTEAD OF ROSSBY NUMBER [PDF]
, 2014 Magnetic activity in Sun-like and low-mass stars causes X-ray coronal emission which is stronger for more rapidly rotating stars. This relation is often interpreted in terms of the Rossby number, i.e., the ratio of rotation period to convective overturn ...
A. Reiners, M. Schüssler, V. Passegger
semanticscholar +1 more source
Gravity-mode period spacings and near-core rotation rates of 611 γ Doradus stars with Kepler [PDF]
Monthly notices of the Royal Astronomical Society, 2019 We report our survey of γ Dor stars from the 4-yr Kepler mission. These stars pulsate mainly in g modes and r modes, showing period-spacing patterns in the amplitude spectra.
Gang Li +6 more
semanticscholar +1 more source
Poplar Clones Trial for three year short rotation system [PDF]
تحقیقات جنگل و صنوبر ایران, 2003 Poplars are one of the tree species with high potential for producing large amount of wood at short period due to their fast growth ability. Because of their wood special and unique characteristics, they can be used in different industries such as ...
Ali Reza Modirrahmati, Reza Baghery
doaj +1 more source
Lubricants, 2022 The friction coefficient is one of the key parameters in the tribological performance of mechanical systems. In the condition of light normal load and low rotation speed, the friction coefficients of ball-on-disc with rough surface in dry sliding contact
Qi Wen +3 more
doaj +1 more source