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Wavelet leader multifractal analysis of period and amplitude sequences from sustained vowels
(Elsevier Science, 2015-09)
Irregularities in the amplitude and period are characteristic of both normal and pathological sustained vowels; they are a product of perturbations inherent in the phonation process. Their analysis provides useful diagnostic ...
Detection of a giant flare displaying quasi-periodic pulsations from a pre-main-sequence M star by the Next Generation Transit Survey
(Oxford University Press, 2019)
We present the detection of an energetic flare on the pre-main-sequence M3 star NGTS J121939.5–355557, which we estimate to be only 2 Myr old. The flare had an energy of 3.2 ±0 0 4 3 ×1036 erg and a fractional amplitude ...
The Optical Gravitational Lensing Experiment. The OGLE-III Catalog of Variable Stars. IV. Long-Period Variables in the Large Magellanic Cloud
(2009)
The fourth part of the OGLE-III Catalog of Variable Stars presents 91 995 long-period variables (LPVs) in the Large Magellanic Cloud (LMC). This sample consists of 79 200 OGLE Small Amplitude Red Giants (OSARGs), 11 128 ...
The period and amplitude changes in the coolest GW Virginis variable star (PG 1159-type) PG 0122+200
(Edp Sciences, 2011-04)
Context. The PG 1159 pre-white dwarf stars experiment a rapidly cooling phase with a time scale of a few 106 years. Theoretical models predict that the neutrinos produced in their core should play a dominant role in the ...
Seismic responses to fluid pressure perturbations in a slipping fault
(American Geophysical Union, 2015)
Seismicity induced by fluid injection in a natural fault is investigated in situ in the near field of the source. We present synchronous seismic and hydromechanical measurements directly recorded in the decametric injection ...
Handwriting training in Parkinson's disease: A trade-off between size, speed and fluency
(Public Library Science, 2017-12-22)
Background In previous work, we found that intensive amplitude training successfully improved micrographia in Parkinson's disease (PD). Handwriting abnormalities in PD also express themselves in stroke duration and writing ...
On the evolutionary status and pulsations of the recently discovered blue large-amplitude pulsators (BLAPs)
(Oxford University Press, 2018-06)
The blue large-amplitude pulsators (BLAPs) constitute a new class of pulsating stars. They are hot stars with effective temperatures of ∼30 000 K and surface gravities of log g ∼ 4.9, that pulsate with periods in the range ...
The spectral type of CHS 7797 - an intriguing very low mass periodic variable in the Orion Nebula Cluster
(EDP Sciences, 2013-02)
Aims: We present the spectroscopic characterization of the unusual high-amplitude very low mass pre-main-sequence periodic variable CHS 7797. Methods: This study is based on optical medium-resolution (R = 2200) spectroscopy ...