On the Periodicity of Oscillatory Reconnection
arXiv:1212.1000 · doi:10.1051/0004-6361/201220234
Abstract
Oscillatory reconnection is a time-dependent magnetic reconnection mechanism that naturally produces periodic outputs from aperiodic drivers. This paper aims to quantify and measure the periodic nature of oscillatory reconnection for the first time. We solve the compressible, resistive, nonlinear MHD equations using 2.5D numerical simulations. We identify two distinct periodic regimes: the impulsive and stationary phases. In the impulsive phase, we find the greater the amplitude of the initial velocity driver, the longer the resultant current sheet and the earlier its formation. In the stationary phase, we find that the oscillations are exponentially decaying and for driving amplitudes 6.3 - 126.2 km/s, we measure stationary-phase periods in the range 56.3 - 78.9 s, i.e. these are high frequency (0.01 - 0.02 Hz) oscillations. In both phases, we find that the greater the amplitude of the initial velocity driver, the shorter the resultant period, but note that different physical processes and periods are associated with both phases. We conclude that the oscillatory reconnection mechanism behaves akin to a damped harmonic oscillator.
arXiv comment8 pages, 4 figures
References in corpus (27)
- MHD Waves and Coronal Seismology: an overview of recent results
- Propagating waves along spicules
- Giant Chromospheric Anemone Jet Observed with Hinode and Comparison with Magnetohydrodynamic Simulations: Evidence of Propagating Alfven Waves and Magnetic Reconnection
- Relationship between wave processes in sunspots and quasi-periodic pulsations in active region flares
- Direct Imaging by SDO AIA of Quasi-periodic Fast Propagating Waves of ~2000 km/s in the Low Solar Corona
- Nonlinear Fast Magnetoacoustic Wave Propagation in the Neighbourhood of a 2D magnetic X-point: Oscillatory Reconnection
- MHD wave propagation in the neighbourhood of a two-dimensional null point
- Current amplification and magnetic reconnection at a 3D null point. I - Physical characteristics
- An Intriguing Chromospheric Jet Observed by Hinode: I. Fine Structure Kinematics and Evidence of Unwinding Twists
- Review article: MHD wave propagation near coronal null points of magnetic fields
- Observational Study Of the Quasi-Periodic Fast Propagating Magnetosonic Waves and the Associated Flare on 2011 May 30
- The Number Of Magnetic Null Points In The Quiet Sun Corona
- Recurrent solar jets in active regions
- Generation of quasi-periodic waves and flows in the solar atmosphere by oscillatory reconnection
- A new view of quiet-Sun topology from Hinode/SOT
- MHD mode coupling in the neighbourhood of a 2D null point
- The periodic variations of a white-light flare observed with ULTRACAM
- Transverse oscillations of two coronal loops
- Magnetohydrodynamics wave propagation in the neighbourhood of two dipoles
- MHD Wave Propagation in the Neighbourhood of Two Null Points
- Determination of sub-resolution structure of jet by solar magnetoseismology
- Steady state reconnection at a single 3D magnetic null point
- Current accumulation at an asymmetric 3D null point caused by generic shearing motions
- 3D MHD Coronal Oscillations About a Magnetic Null Point: Application of WKB Theory
- Nonlinear wave propagation and reconnection at magnetic X-points in the Hall MHD regime
- The relationship between hard X-ray pulse timings and the locations of footpoint sources during solar flares
- Linear and nonlinear MHD mode coupling of the fast magnetoacoustic wave about a 3D magnetic null point
Cited by in corpus (37)
- Modelling Quasi-Periodic Pulsations in Solar and Stellar Flares
- Quasi-periodic pulsations in solar and stellar flares: an overview of recent results
- Statistical Properties of Quasi-Periodic Pulsations in White-Light Flares Observed With Kepler
- X-ray and EUV Observations of Simultaneous Short and Long Period Oscillations in Hot Coronal Arcade Loops
- A quasi-periodic fast-propagating magnetosonic wave associated with the eruption of a magnetic flux rope
- Oscillations in stellar superflares
- Coronal Quasi-periodic Fast-mode Propagating Wave Trains
- Detection of a giant flare displaying quasi-periodic pulsations from a pre-main sequence M star with NGTS
- Observation of a reversal of breakout reconnection preceding a jet: evidence of oscillatory magnetic reconnection?
- Hard X-ray and ultraviolet emission during the 2011 June 7 solar flare
- Spatio-temporal dynamics of sources of hard X-ray pulsations in solar flares
- Oscillation of Newly Formed Loops After Magnetic Reconnection in the Solar Chromosphere
- Magnetoacoustic Waves in a Stratified Atmosphere with a Magnetic Null Point
- The dynamical behaviour of a jet in an on-disk coronal hole observed with AIA/SDO
- Abnormal oscillation modes in a waning light bridge
- Relationship of type III radio bursts with quasi-periodic pulsations in a solar flare
- A Multi-Period Oscillation in a Stellar Superflare
- Localising pulsations in the hard X-ray and microwave emission of an X-class flare
- On the periodicity of linear and nonlinear oscillatory reconnection
- Microwave Imaging of Quasi-periodic Pulsations at Flare Current Sheet
- Oscillatory Reconnection of a 2D X-point in a hot coronal plasma
- Oscillatory reconnection as a plasma diagnostic in the solar corona
- Direct Imaging of Magnetohydrodynamic Wave Mode Conversion Near a 3D Null Point on the Sun
- Implosive collapse about magnetic null points: A quantitative comparison between 2D and 3D nulls
- Nonlinear Alfvén wave dynamics at a 2D magnetic null point: ponderomotive force
- 3D Alfven wave behaviour around proper and improper magnetic null points
- The formation and dissipation of current sheets and shocks due to compressive waves in a stratified atmosphere containing a magnetic null
- Resistively-limited current sheet implosions in planar anti-parallel (1D) and null-point containing (2D) magnetic field geometries
- Numerical study of solar eruption, extreme-ultraviolet wave propagation, and wave-induced prominence dynamics
- A New Type of Jets in a Polar Limb of Solar Coronal Hole
- Self-similar solutions of oscillatory reconnection: parameter study of magnetic field strength and background temperature
- Do Cellular Automaton Avalanche Models Simulate the Quasi-Periodic Pulsations of Solar Flares?
- Kelvin-Helmholtz instability and collapse of a twisted magnetic null point with anisotropic viscosity
- HEL1OS -- A Hard X-ray Spectrometer on Board Aditya-L1
- Multi-wavelength observations of the 2014 June 11 M3.9 flare: temporal and spatial characteristics
- Estimating the total energy content in escaping accelerated solar electron beams
- The independence of oscillatory reconnection periodicity from the initial pulse