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A Systematic Study on Energy Dependence of Quasi-Periodic Oscillation Frequency in GRS 1915+105
accretion, accretion disks — black hole physics — stars: individual (GRS 1915+105) — stars: oscillations
2011/10/11
Systematically studying all the RXTE/PCA observations for GRS 1915+105 before November 2010, we have discovered three additional patterns in the relation between Quasi-Periodic Oscillation (QPO) frequ...
The universal red-giant oscillation pattern; an automated determination with CoRoT data
Stars oscillations - Stars interiors - Methods data analysis - Methods analytical
2010/11/12
Aims. The CoRoT and Kepler satellites have provided thousands of red-giant oscillation spectra. The analysis of these spectra requires efficient methods for identifying all eigenmode parameters.Method...
Asteroseismology of red giants from the first four months of Kepler data: Global oscillation parameters for 800 stars
Asteroseismology red giants the first four months
2011/1/10
We have studied solar-like oscillations in ~800 red-giant stars using Kepler long-cadence photometry. The sample includes stars ranging in evolution from the lower part of the red-giant branch to the ...
Planetary detection limits taking into account stellar noise. I. Observational strategies to reduce stellar oscillation and granulation effects
Earth and Planetary Astrophysics (astro-ph.EP)
2010/12/29
The radial velocity signature of stellar noise is small, around the meter-per-second, but already too much for the detection of Earth mass planets in habitable zones. In this paper, we address the imp...
Variations of the amplitudes of oscillation of the Be star Achernar
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/24
We report on finding variations in amplitude of the two main oscillation frequencies found in the Be star Achernar, over a period of 5 years.
THE 50-DAY OSCILLATION IN THE EARTH`S ROTATION, ATMOSPHERIC ANGULAR MOMENTUM AND SOLAR ACTIVITY
50-DAY OSCILLATION THE EARTH`S ROTATION ATMOSPHERIC ANGULAR MOMENTUM
2009/4/8
THE 50-DAY OSCILLATION IN THE EARTH`S ROTATION, ATMOSPHERIC ANGULAR MOMENTUM AND SOLAR ACTIVITY。
SOME FRESH INDICATIONS OF THE SOLAR ORIGIN OF 4-6-YEAR OSCILLATION OF THE EARTH'S ROTATION PARAMETERS
SOLAR ORIGIN EARTH'S ROTATION PARAMETERS 4-6-YEAR OSCILLATION
2009/3/19
The variations of universal times difference UT1-TAI and Earth’s
rotation instantaneous pˆole coordinates (X,Y) are studied in the frequency range
of 3 - 8 yr−1 as a function of the solar...
INTERACTION BETWEEN VARIABLE SOLAR UV RADIATION AND TROPOSPHERIC CIRCULATIONS AS A POSSIBLE CAUSE OF FIVE YEAR OSCILLATION IN EARTH ROTATION
VARIABLE SOLAR UV RADIATION TROPOSPHERIC CIRCULATIONS EARTH ROTATION
2009/3/16
It is shown that Five Year Oscillation in Earth rotation is possibly
caused by variable solar UV radiation and a corresponding perturbation mechanism
is suggested.