Results 21 to 30 of about 10,789 (253)

Long time-scale behavior of the Blazhko effect from rectified Kepler data [PDF]

open access: yes, 2014
In order to benefit from the 4-year unprecedented precision of the Kepler data, we extracted light curves from the pixel photometric data of the Kepler space telescope for 15 Blazhko RR Lyrae stars.
Benkő, J. M.   +4 more
core   +2 more sources

Anharmonic force field and vibrational frequencies of tetrafluoromethane (CF$_4$) and tetrafluorosilane (SiF$_4$) [PDF]

open access: yes, 1999
Accurate quartic anharmonic force fields for CF$_4$ and SiF$_4$ have been calculated using the CCSD(T) method and basis sets of $spdf$ quality. Based on the {\it ab initio} force field with a minor empirical adjustment, the vibrational energy levels of ...
Edwin L. Sibert   +4 more
core   +2 more sources

Applicability Of TDLAS Gas Detection Technique To Combustion Control and Emission Monitoring Under Harsh Environment

open access: yesInternational Journal of Technology, 2014
Tunable diode laser absorption spectroscopy (TDLAS) has been well-known as an established detection technique for trace gas molecules and analytical instruments based on this technique are already commercially available.
Hajime Arimoto   +7 more
doaj   +1 more source

Robust Multipitch Analyzer against Initialization based on Latent Harmonic Allocation using Overtone Corpus

open access: yesJournal of Information Processing, 2013
We present a Bayesian analysis method that estimates the harmonic structure of musical instruments in music signals on the basis of psychoacoustic evidence. Since the main objective of multipitch analysis is joint estimation of the fundamental frequencies and their harmonic structures, the performance of harmonic structure estimation significantly ...
Sakaue, Daichi   +3 more
openaire   +2 more sources

CoRoT light curves of RR Lyrae stars. CoRoT 101128793: long-term changes in the Blazhko effect and excitation of additional modes [PDF]

open access: yes, 2010
The CoRoT (Convection, Rotation and planetary Transits) space mission provides a valuable opportunity to monitor stars with uninterrupted time sampling for up to 150 days at a time.
A. Baglin   +45 more
core   +5 more sources

Effective temperature, Hawking radiation and quasinormal modes [PDF]

open access: yes, 2012
Parikh and Wilczek have shown that Hawking radiation's spectrum cannot be strictly thermal. Such a non-strictly thermal character implies that the spectrum is also not strictly continuous and thus generates a natural correspondence between Hawking ...
Corda, Christian
core   +1 more source

On the Ratio of Periods of the Fundamental Harmonic and First Overtone of Magnetic Tube Kink Oscillations [PDF]

open access: yesSolar Physics, 2016
We study kink oscillations of thin magnetic tubes. We assume that the density inside and outside the tube (and possibly also the cross-section radius) can vary along the tube. This variation is assumed to be of such a form that the kink speed is symmetric with respect to the tube centre and varies monotonically from the tube ends to the tube centre ...
Ruderman, M.S.   +2 more
openaire   +1 more source

High-Stability and Fast Calibration-Free Temperature Measurement Based on Light-Induced Thermoelastic Spectroscopy

open access: yesUltrafast Science
In this paper, a series of calibration-free temperature measurement methods based on light-induced thermoelastic spectroscopy (LITES) are proposed for the first time. These techniques utilize the steady-state and transient response characteristics of the
Xiaonan Liu   +3 more
doaj   +1 more source

Kepler photometry of RRc stars: peculiar double-mode pulsations and period doubling [PDF]

open access: yes, 2014
We present the analysis of four first overtone RR Lyrae stars observed with the Kepler space telescope, based on data obtained over nearly 2.5 yr. All four stars are found to be multiperiodic.
Bailey   +90 more
core   +3 more sources

Influence of the Molding Technique on the Bell Casting Geometry [PDF]

open access: yesArchives of Foundry Engineering
The influence of the technique used to make the casting mold on the geometry and sound of the bell has been analyzed. The starting point was a CAD model of a bell with a geometry designed to obtain the required overtone frequencies that determine the ...
D. Bartocha   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy