Quasi-periodic pulsations with multiple periods in hard X-ray emission

Abstract

We explore the quasi-periodic pulsations (QPPs) with multiple periods in hard X-ray (HXR) emission from Fermi/GBM during the impulsive phase of solar flare (SOL2014-09-10). The completely new observational result is that the shorter periods appear at lower energies of the X-ray photons at the beginning and the longer periods appear at higher energies at the end, with some intersection of the periods at medium energies. We also find the shorter and then the longer periods during the same phase of this flare. Using the wavelet power spectrum and fast Fourier transform (FFT) spectrum, we analyze the normalized rapidly varying signal divided by its slowly varying signal, which is the smoothed original HXR flux. The periods of 27 s and 37 s are derived at lower energy channels between 17:25 UT and 17:29 UT, i.e., 12.0-27.3 keV and 27.3-50.9 keV. Then the periods of 27 s, 46 s and 60 s are observed at medium-energy channel from 17:26 UT to 17:33 UT, such as 50.9-102.3 keV. And the period of 80 s is detected at higher energy channel from 17:28 UT to 17:33 UT, such as 102.3-296.4 keV.

arXiv comment5 pages, 5 figures, accepted for publication in MNRAS Letters

References in corpus (29)

• The Fermi Gamma-Ray Burst Monitor
• Growing transverse oscillations of a multistranded loop observed by SDO/AIA
• Quasi-periodic pulsations in solar and stellar flares: an overview of recent results
• Direct Imaging by SDO AIA of Quasi-periodic Fast Propagating Waves of ~2000 km/s in the Low Solar Corona
• Slipping Magnetic Reconnection, Chromospheric Evaporation, Implosion, and Precursors in the 2014 September 10 X1.6-Class Solar Flare
• Global sausage oscillation of solar flare loops detected by the Interface Region Imaging Spectrograph
• The Spectroscopic Signature of Quasi-periodic Upflows in Active Region Timeseries
• Quasi-periodic Slipping Magnetic Reconnection During an X-class Solar Flare Observed by the Solar Dynamics Observatory and Interface Region Imaging Spectrograph
• A large-scale search for evidence of quasi-periodic pulsations in solar flares
• Observational Study Of the Quasi-Periodic Fast Propagating Magnetosonic Waves and the Associated Flare on 2011 May 30
• Statistical Properties of Quasi-Periodic Pulsations in White-Light Flares Observed With Kepler
• Observation of multiple sausage oscillations in cool postflare loop
• Explosive Chromospheric Evaporation in a Circular-ribbon Flare
• Time delays in quasi-periodic pulsations observed during the X2.2 solar flare on 2011 February 15
• Chromospheric Condensation and Quasi-periodic Pulsations in a Circular-ribbon Flare
• Microwave Quasi-periodic Pulsations in Multi-timescales Associated with a Solar Flare/CME Event
• Quasi-Periodic Pulsations during the Impulsive and Decay phases of an X-class Flare
• Observation of a Quasi-periodic Pulsation in Hard X-ray, Radio and Extreme-ultraviolet Wavelengths
• Observations of a Quasi-Periodic Fast Propagating Magnetosonic Wave in Multi-Wavelength and Its Interaction with Other Magnetic Structures
• Very Long-period Pulsations before the Onset of Solar Flares
• Observations of quasi-periodic solar X-ray emission as a result of MHD oscillations in a system of multiple flare loops
• Oscillation of Newly Formed Loops After Magnetic Reconnection in the Solar Chromosphere
• Quasi-periodic wiggles of microwave zebra structures in a solar flare
• Relationship of type III radio bursts with quasi-periodic pulsations in a solar flare
• Quasi-periodic pulsations with periods that change depending on whether the pulsations have thermal or nonthermal components
• The period ratio for standing kink and sausage modes in solar structures with siphon flow. I. magnetized slabs
• Study of multi-periodic coronal pulsations during an X-class solar flare
• Spectroscopic Diagnostics of Solar Magnetic Flux Ropes Using Iron Forbidden Line
• Statistical properties of the Bipolar Magnetic Regions

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