Elena Petrova

ORCID: 0000-0002-0175-7449
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About
Contact & Profiles
Research Areas
  • Solar and Space Plasma Dynamics
  • Ionosphere and magnetosphere dynamics
  • Stellar, planetary, and galactic studies
  • Black Holes and Theoretical Physics
  • Geomagnetism and Paleomagnetism Studies
  • Advanced Differential Geometry Research
  • Earth Systems and Cosmic Evolution
  • Cosmology and Gravitation Theories
  • Particle physics theoretical and experimental studies
  • Material Science and Thermodynamics
  • Aquatic and Environmental Studies
  • Astro and Planetary Science

KU Leuven
2023-2024

Skolkovo Institute of Science and Technology
2021

Abstract High-frequency wave phenomena present a great deal of interest as one the possible candidates to contribute energy input required heat corona part alternating current heating theory. However, resolution imaging instruments up until Solar Orbiter has made it impossible resolve necessary time and spatial scales. The paper reports on high-frequency transverse motions in small loop located quiet-Sun region corona. oscillations were observed with High Resolution Imager Extreme...

10.3847/1538-4357/acb26a article EN cc-by The Astrophysical Journal 2023-03-01

Decayless kink oscillations are omnipresent in the solar atmosphere, and they a viable candidate for coronal heating. Although there have been extensive studies of decayless loops with lengths few hundred megameters, properties these small-scale (∼10 mm) yet to be explored. In this study, we present small embedded quiet corona holes. We use high-resolution observations from Extreme Ultraviolet Imager on board Solar Orbiter pixel scales 210 km cadence 5 s or better. analysed 42 loop varying...

10.1051/0004-6361/202346670 article EN cc-by Astronomy and Astrophysics 2024-01-25

Abstract Decayless kink oscillations, characterized by their lack of decay in amplitude, have been detected coronal loops varying scales active regions, the quiet Sun, and holes. Short-period (<50 s) decayless oscillations short (< 50 Mm) within regions. Nevertheless, long-period these remain relatively unexplored crucial for understanding wave modes excitation mechanisms oscillations. We present statistical analysis from two regions observed Extreme Ultraviolet Imager onboard Solar...

10.3847/1538-4357/ad95fb article EN cc-by The Astrophysical Journal 2025-01-13

Context. It has been proposed that the slope ( δ ) of power-law distribution between energy flux and oscillation frequency could determine whether high-frequency transverse oscillations make a dominant contribution to heating < 1). A meta-analysis decayless revealed potentially play key role in solar corona. Aims. We aim investigate or not (and, if so, how) distributions contained oscillations, their slopes, depend on coronal region which occurs. Methods. analysed from 41 quiet Sun (QS)...

10.1051/0004-6361/202450433 article EN cc-by Astronomy and Astrophysics 2024-06-18

Decayless kink oscillations are omnipresent in the solar atmosphere and a viable candidate for coronal heating. Though there have been extensive studies of decayless loops with few hundred Mm lengths, properties these small-scale ($\sim$10 Mm) yet to be explored. In this study, we present small embedded quiet corona holes. We use high resolution observations from Extreme Ultraviolet Imager onboard Solar Orbiter pixel scales 210 km 5 s cadence or better. find 42 33 loop lengths varying...

10.48550/arxiv.2304.13554 preprint EN cc-by arXiv (Cornell University) 2023-01-01

Одной из наиболее актуальных проблем современной физики элементарных частиц является обоснование генерации барионного заряда во Вселенной.В суперсимметричных моделях с расширенным сектором Хиггса возможно описание бариогенезиса привлечением теории фазовых переходов и катастроф.В работе в рамках минимальной суперсимметрии рассмотрена эволюция потенциала при изменении температуры управляющих параметров модели.Учтена температурная зависимость самих λ1(T

10.14498/vsgtu1253 article RU cc-by Вестник Самарского государственного технического университета Серия Физико-математические науки 2013-01-01

Lim et al. (2023) have recently proposed that the slope ($\delta$) of power law distribution between energy flux and oscillation frequency could determine whether high-frequency transverse oscillations give a dominant contribution to heating ($\delta<1$). A meta-analysis decayless revealed potentially play key role in solar corona. We aim investigate how (whether) distributions contained oscillations, their slopes, depend on coronal region which occurs. analyse from 41 quiet Sun (QS) loops...

10.48550/arxiv.2406.06368 preprint EN arXiv (Cornell University) 2024-06-10

Abstract The solar radio flux at F10.7 and F30 cm is required by most models characterizing the state of Earth’s upper atmosphere, such as thermosphere ionosphere, to specify satellite orbits, re-entry services, collision avoidance maneuvers, modeling evolution space debris. We develop a method called RESONANCE (Radio Emissions from Sun: ONline ANalytical Computer-aided Estimator) for prediction 13-month smoothed monthly mean indices 1–24 months ahead. algorithm has three steps. First, we...

10.3847/1538-4365/abef6d article EN The Astrophysical Journal Supplement Series 2021-04-27

10.14498/vsgtu896 article RU cc-by Вестник Самарского государственного технического университета Серия Физико-математические науки 2011-01-01
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