86 citations · 507 across the 26 of their papers we have counts for
26 papers
Electron Acceleration and Plasma Heating in an Impulsive Confined C-class Solar Flare
I. N. Sharykin, I. V. Zimovets, G. V. Koynash +3
A detailed analysis of the impulsive C2.8 solar flare SOL2023-03-19T02:12 is presented, focusing on the microwave (MW) and X-ray domains. The flare was selected because of its impu…
On the possibility of using decayless kink oscillations of coronal loops to forecast powerful solar flares and coronal mass ejections
A. B. Nechaeva, I. V. Zimovets, I. N. Sharykin +1
This work investigates the decayless kink oscillations of solar coronal loops and examines possible changes in their behaviour in active regions (ARs) before powerful solar flares…
Investigation of possible precursors of solar flares in the active region 12230 On December 9, 2014
G. G. Motorina, I. N. Sharykin, I. V. Zimovets +1
The question of the nature of precursors of solar flares, as well as their relationship with subsequent flares, still has no unambiguous answer. This is due, in particular, to the…
Magnetic energies (and some other parameters) in solar active regions of different Hale and McIntosh classes: statistical analysis for 2010-2024
I. V. Zimovets, I. N. Sharykin, W. -Q. Gan
A statistical analysis of magnetic energies of the nonlinear force-free and potential fields, and their difference (a proxy for the free magnetic energy) in active regions (ARs) on…
Comparative study of electric currents and energetic particle fluxes in a solar flare and Earth magnetospheric substorm
Anton Artemyev, Ivan Zimovets, Ivan Sharykin +20
Magnetic field-line reconnection is a universal plasma process responsible for the conversion of magnetic field energy to the plasma heating and charged particle acceleration. Sola…
Relationships between Photospheric Vertical Electric Currents and Hard X-Ray Sources in Solar Flares: Statistical Study
I. V. Zimovets, I. N. Sharykin, W. Q. Gan
There are still debates whether particle acceleration in solar flares may occur due to interruption of electric currents flowing along magnetic loops. To contribute to this problem…
Sunquakes of Solar Cycle 24
I. N. Sharykin, A. G. Kosovichev
The paper presents results of a search for helioseismic events (sunquakes) produced by M-X class solar flares during Solar Cycle 24. The search is performed by analyzing photospher…
Density distribution of photospheric vertical electric currents in flare active regions of the Sun
I. V. Zimovets, A. B. Nechaeva, I. N. Sharykin +1
Solar active regions contain electric currents. Information on the distribution of currents is important for understanding the processes of energy release on the surface of the Sun…
Flare Energy Release at the Magnetic Field Polarity Inversion Line During M1.2 Solar Flare of 2015 March 15. II. Investigation of Photospheric Electric Current and Magnetic Field Variations Using HMI 135-second Vector Magnetograms
I. N. Sharykin, I. V. Zimovets, I. I. Myshyakov
This work is a continuation of Paper I [Sharykin et al., 2018] devoted to analysis of nonthermal electron dynamics and plasma heating in the confined M1.2 class solar flare SOL2015…
LOFAR observations of fine spectral structure dynamics in type IIIb radio bursts
I. N. Sharykin, E. P. Kontar, A. A. Kuznetsov
Solar radio emission features a large number of fine structures demonstrating great variability in frequency and time. We present spatially resolved spectral radio observations of…
Flare Energy Release in the Magnetic Field Polarity Inversion Line During M1.2 Solar Flare of March 15, 2015. Paper I. Onset of Plasma Heating and Electrons Acceleration
I. N. Sharykin, I. V. Zimovets, I. I. Myshyakov +1
We present the study of SOL2015-03-15 M1.2 flare, revealing acceleration of electrons and plasma heating in the sheared twisted magnetic structure in the polarity inversion line (P…
Statistical Study of Chromospheric Evaporation in Impulsive Phase of Solar Flares
Viacheslav M Sadykov, Alexander G Kosovichev, Ivan N Sharykin +1
We present a statistical study of chromospheric evaporation in solar flares using simultaneous observations by the RHESSI X-ray telescope and the IRIS UV spectrograph. The results…
Onset of Photospheric Impacts and Helioseismic Waves in X9.3 Solar Flare of September 6, 2017
Ivan N. Sharykin, Alexander G. Kosovichev
The X9.3 flare of September 6, 2017, was the most powerful flare of Solar Cycle 24. It generated strong white-light emission and multiple helioseismic waves (sunquakes). By using d…
Flare Energy Release in the Lower Solar Atmosphere Near the Magnetic Field Polarity Inversion Line
I. N. Sharykin, V. M. Sadykov, A. G. Kosovichev +2
We study flare processes in the solar atmosphere using observational data for a M1-class flare of June 12, 2014, obtained by New Solar Telescope (NST/BBSO) and Helioseismic Magneti…
Probing Twisted Magnetic Field Using Microwave Observations in an M Class Solar Flare on 11 February, 2014
I. N. Sharykin, A. A. Kuznetsov, I. I. Myshyakov
This work demonstrates the possibility of magnetic field topology investigations using microwave polarimetric observations. We study a solar flare of GOES M1.7 class that occurred…
Investigation of Relationship Between High-Energy X-ray Sources and Photospheric and Helioseismic Impacts of X1.8 Solar Flare of October 23, 2012
Ivan N Sharykin, Alexander G Kosovichev, Viacheslav M Sadykov +2
The X-class solar flare of October 23, 2012, generated continuum photospheric emission and a strong helioseismic wave ("sunquake") that points to an intensive energy release in the…
Modelling of Nonthermal Microwave Emission From Twisted Magnetic Loops
I. N. Sharykin, A. A. Kuznetsov
Microwave gyrosynchrotron radio emission generated by nonthermal electrons in twisted magnetic loops is modelled using the recently developed simulation tool GX Simulator. We consi…
Observational Investigation of Energy Release in the Lower Solar Atmosphere of a Solar Flare
I. N. Sharykin, V. M. Sadykov, A. G. Kosovichev +2
We study flare processes in the lower solar atmosphere using observational data for a M1-class flare of June 12, 2014, obtained by New Solar Telescope (NST/BBSO) and Helioseismic M…
Relationship between chromospheric evaporation and magnetic field topology in M-class solar flare
V. M. Sadykov, A. G. Kosovichev, I. N. Sharykin +2
Chromospheric evaporation is observed as Doppler blueshift during solar flares. It plays one of key roles in dynamics and energetics of solar flares, however, its mechanism is stil…
Dynamics of Electric Currents, Magnetic Field Topology and Helioseismic Response of a Solar Flare
I. N. Sharykin, A. G. Kosovichev
The solar flare on July 30, 2011 was of a modest X-ray class (M9.3), but it made a strong photospheric impact and produced a "sunquake," observed with the Helioseismic and Magnetic…
Plasma Heating to Super-Hot Temperatures (>30 MK) in the August 9, 2011 Solar Flare
I. N. Sharykin, A. B. Struminsky, I. V. Zimovets
We investigate the August 9, 2011 solar flare of X-ray class X6.9, the "hottest" flare from 2000 to 2012, with a peak plasma temperature according to GOES data of 32.5 MK. Our goal…
Properties of chromospheric evaporation and plasma dynamics of a solar flare from IRIS observations
Viacheslav M. Sadykov, Santiago Vargas Dominguez, Alexander G. Kosovichev +3
Dynamics of hot chromospheric plasma of solar flares is a key to understanding of mechanisms of flare energy release and particle acceleration. A moderate M1.0 class flare of 12 Ju…
Onset of Electron Acceleration in a Flare Loop
I. N. Sharykin, S. Liu, L. Fletcher
We carried out detailed analysis of X-ray and radio observations of a simple flare loop that occurred on 12th August 2002, with the impulsive hard X-ray (HXR) light curves dominate…
Fine structure of flare ribbons and evolution of electric currents
I. N. Sharykin, A. G. Kosovichev
Emission of solar flares across the electromagnetic spectrum is often observed in the form of two expanding ribbons. The standard flare model explains the flare ribbons as footpoin…