periodic pulsations
Quasi periodic pulsations in a solar microflare
... quasi- periodic pulsations ( QPP; see Nakariakov et ...the periodic modulation of the accelerated particle ...irregular pulsations ( e.g., similarly to the Pi- type geomagnetic ...
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Scaling laws of quasi periodic pulsations in solar flares
... "Quasi-periodic Pulsations in Stellar Flares: a Tool for Studying the Solar-Stellar Connection" led by A-MB for many productive discussions, and are grateful to ...
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Quasi periodic pulsations in the gamma ray emission of a solar flare
... Quasi-periodic pulsations (QPP) are a frequently observed feature of solar and stellar flaring ...1982), periodic triggering of energy releases by MHD waves (Foullon et ...
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Significance testing for quasi periodic pulsations in solar and stellar flares
... quasi-periodic pulsations (QPPs) in solar and stellar flares has been the topic of recent ...significant periodic signals in power spectra, and properly accounts for red noise as well as the ...
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Multi mode quasi periodic pulsations in a solar flare
... Quasi-periodic pulsations (QPP) in solar and stellar flares are widely discussed in the literature (see, e.g. Nakariakov 2007; Za- itsev & Stepanov 2008; Nakariakov & Melnikov 2009; Nakari- akov et ...
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Quasi periodic pulsations in the most powerful solar flare of cycle 24
... Quasi-periodic pulsations (QPP) are common in solar flares and are now regularly observed in stellar flares. We present the detection of two different types of QPP signals in the thermal emission light ...
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X ray quasi periodic pulsations in solar flares as magnetohydrodynamic oscillations
... quasi-periodic pulsations (QPP) of X-ray radiation during solar flares, made possible with the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI), sup- ported by complementary data at other ...
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Statistical properties of quasi periodic pulsations in white light flares observed with Kepler
... We embark on a study of quasi-periodic pulsations (QPPs) in the decay phase of white-light stellar flares observed by Kepler. Out of the 1439 flares on 216 different stars detected in the short-cadence data ...
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Multi wavelength spatially resolved analysis of quasi periodic pulsations in a solar flare
... Quasi-periodic pulsations (QPP) have been seen in emission from solar flares for several decades (Nakariakov 2007). The emission intensity from a solar flare is observed to oscillate with a characteristic ...
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Relationship between wave processes in sunspots and quasi periodic pulsations in active region flares
... In general, spatial information, such as the spatial size and shape of the region occupied by an oscillation, and the distri- bution of the oscillation power, phase, and spectrum over the source, is crucial to ...
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Properties of quasi periodic pulsations in solar flares from a single active region
... hand, this may be a lower limit for the true number of flares in the sample with QPPs. For example, the presence of background trends due to the flare itself can mask QPP signals in the power spectrum (Pugh et al. 2017), ...
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Multi waveband detection of quasi periodic pulsations in a stellar flare on EK Draconis observed by XMM Newton
... Once a fit was found, the decay given by Eq. 1 was subtracted from the flare flux rate to produce a detrended light curve, as seen in Fig. 1b. For the remainder of this paper we refer to de- trended light curves as ...
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Quasi Periodic Pulsations in Solar Flares and the Earth's Ionosphere
... within a moving window by a low degree polynomial. A boxcar or moving average smoothing filter is appropriate when the underlying trend is constant or chang- ing linearly with time as it works by replacing each data ...
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Quasi periodic pulsations in solar flares
... harmonics of the same nonlinear oscillation. In both cases, the ratios of different periods can be used to reveal the physical mechanism responsible for the pulsations and hence become a tool for diagnostics ...
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Quasi periodic pulsations in solar and stellar flares
... detected periodic signals are time harmonics of the same non-linear signal, the phases of oscillation of the two periodic signals were found by fitting ...
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Modelling quasi periodic pulsations in solar and stellar flares
... following (and probably more) considerations will be useful. Bursts in non-thermal emis- sions, which seem to occur quasi-periodically in some cases, are sometimes attributed to the electron acceleration associated with ...
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Spatially resolved microwave pulsations of a flare loop
... quasi-periodic pulsations with periods of about 1–20 s are often detected in the microwave and hard X-ray emission generated during solar flares (Kane et ...
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IBVS Volume 6001
... The minima times were computed with the Kwee – van Woerden method (Kwee & van Woerden, 1956). Two remarkable minima observations are plotted in Figs. 1 and 2 below. The system V760 Oph shows one of the deepest ...
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Nighttime Pc3 pulsations: MM100 and MAGDAS observations
... Specific nighttime Pc3 waves may be an additional channel of coupling between nighttime magnetospheric activity and low-latitude ionosphere, which requires fur- ther studies with the use of magnetotail satellites. There ...
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Pulsations and eclipse-time analysis of HW Vir
... for pulsations. The spectrum clearly shows periodic signal from close to the orbital frequency up to 4600 µHz, with the majority of peaks found below 2600 ...
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