Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Abramenko, Valentina I."'
Publikováno v:
Solar Physics, 2024, Volume 299, Issue 2, article id.7
Charged particles, generated in solar flares, sometimes can get extremely high energy, above the 500 MeV level, and produce abrupt ground level enhancements (GLEs) on the ground-based detectors of cosmic rays. The initial flares are strong eruptions
Externí odkaz:
http://arxiv.org/abs/2404.06877
We used line-of-sight magnetograms acquired by the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory to derive the decay rate of total unsigned magnetic flux for 910 ephemeral and active regions (ARs) observed between 2010 and
Externí odkaz:
http://arxiv.org/abs/2303.01321
Systematic studies of the rotation rate of sunspot groups using white-light images yield controversial results on the variations of the rotation rate: sunspot groups were found to either accelerate or decelerate systematically. This disagreement migh
Externí odkaz:
http://arxiv.org/abs/2212.14740
Data for 3046 solar active regions (ARs) observed since May 12, 1996 to December 27, 2021 were utilized to explore how the magnetic fluxes from ARs of different complexity follow the solar cycle. Magnetograms from the Michelson Doppler Imager instrum
Externí odkaz:
http://arxiv.org/abs/2212.07115
Autor:
Abramenko, Valentina I.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 2021, Volume 507, Issue 3, pp.3698-3706
Obtaining observational evidence of the turbulent component of solar dynamo operating in the convective zone is a challenging problem because the dynamo action is hidden below the photosphere. Here we present results of a statistical study of flaring
Externí odkaz:
http://arxiv.org/abs/2111.04425
Using the data on magnetic field maps and continuum intensity for Solar Cycles 23 and 24, we explored 100 active regions (ARs) that produced M5.0 or stronger flares. We focus on the presence/absence of the emergence of magnetic flux in these ARs 2-3
Externí odkaz:
http://arxiv.org/abs/2105.03886
A long-standing problem is to predict the future flare productivity of an active region (AR) when it is on the stage of early emergence. The aim of this study is to probe two parameters of the photospheric magnetic field, both derived during the emer
Externí odkaz:
http://arxiv.org/abs/2011.12062
We analysed line-of-sight magnetic fields and magnetic power spectra of an undisturbed photosphere using magnetograms acquired by the Helioseismic and Magnetic Imager (HMI) on-board the Solar Dynamic Observatory (SDO) and the Near InfraRed Imaging Sp
Externí odkaz:
http://arxiv.org/abs/2008.06264
Using magnetographic data provided by the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory, we analyzed the structure of magnetic fields and vertical electric currents in six active regions (ARs) with different level of flare
Externí odkaz:
http://arxiv.org/abs/1912.07032
Magnetic field data provided by the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory were utilized to explore the changes in the magnetic energy of four active regions (ARs) during their emergence. We found that at the very ea
Externí odkaz:
http://arxiv.org/abs/1907.07952