A5086426112- Solar and Space Plasma Dynamics
- Stellar, planetary, and galactic studies
- Ionosphere and magnetosphere dynamics
- Astro and Planetary Science
- Geophysics and Gravity Measurements
- Solar Radiation and Photovoltaics
- Geomagnetism and Paleomagnetism Studies
- Astronomy and Astrophysical Research
- Spacecraft Design and Technology
- Earthquake Detection and Analysis
- Yersinia bacterium, plague, ectoparasites research
- Calibration and Measurement Techniques
- CCD and CMOS Imaging Sensors
- Acoustic Wave Resonator Technologies
- Photovoltaic System Optimization Techniques
- Atmospheric Ozone and Climate
- Antibiotic Resistance in Bacteria
- Neural dynamics and brain function
- Statistical and numerical algorithms
- Inertial Sensor and Navigation
- Neuroscience and Neuropharmacology Research
- Coastal and Marine Dynamics
- Space Satellite Systems and Control
- IoT Networks and Protocols
- Enterobacteriaceae and Cronobacter Research
Leibniz Institute for Astrophysics Potsdam
2022-2023
National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”
2003-2023
Physikalisch-Meteorologisches Observatorium Davos
2020-2022
Royal Observatory of Belgium
2005-2019
Rostov-on-Don Anti-plague Institute Rospotrebnadzor
2006-2011
Université d'Orléans
2002-2003
Max Planck Society
2003
Centre National de la Recherche Scientifique
2002
The goal of this paper is to study the smallest brightening events observed in EUV quiet Sun. We use commissioning data taken by EUI instrument onboard recently launched Solar Orbiter mission. On 2020 May 30, was situated at 0.556AU from Its HRIEUV telescope 17.4nm passband reached an exceptionally high two-pixel spatial resolution 400km. size and duration small-scale structures determined data, while their height estimated triangulation with simultaneous SDO/AIA data. This first stereoscopy...
The 3D fine structure of the solar atmosphere is still not fully understood as most available observations are taken from a single vantage point. goal paper to study distribution small-scale brightening events ("campfires") discovered in EUV quiet Sun by Extreme Ultraviolet Imager (EUI) aboard Solar Orbiter. We used first commissioning data set acquired EUI's High Resolution telescope on 30 May 2020 174 {\AA} passband and we combined it with simultaneous Atmospheric Imaging Assembly (AIA)...
The Solar Terrestrial Relations Observatory EUV telescopes have uncovered small-scale eruptive events, tentatively referred to as "mini-CMEs" because they exhibit morphologies similar large-scale coronal mass ejections (CMEs). Coronal waves and widespread diffuse dimmings followed by the expansion of are most brightly manifestations CMEs. high temporal spatial resolution data allows us detect analyze these resolve their fine structure, show that observed "mini-waves" a strong similarity...
Abstract EUV waves are large-scale disturbances in the solar corona initiated by coronal mass ejections. However, images show only wave front projections along line of sight spacecraft. We perform 3D reconstructions heights using multipoint observations from STEREO-A and STEREO-B , we study their evolution to properly estimate kinematics. develop two different methods solve matching problem crest on pairs STEREO - A / B combining epipolar geometry with investigation perturbation profiles....
Abstract In many statistical solar flare studies, power laws are claimed and exponents derived by fitting a line to log–log histogram. It is well known that this approach statistically unstable, very large statistics needed produce reliable exponent estimates. This may explain part of the observed divergence in power-law various studies. Moreover, question seldom addressed what extent data really do support behavior. paper, we perform comprehensive study 6924 flares detected SDO /AIA 9.4 nm...
One of the main science questions Solar Orbiter and Parker Probe missions deals with understanding how electrons in lower solar corona are accelerated they subsequently access interplanetary space. We aim to investigate electron acceleration energy release sites as well manner which space case SOL2021-02-18T18:05 event, a GOES A8 class microflare associated coronal jet. This study takes advantage three different vantage points, Orbiter, STEREO-A, Earth, observations ranging from radio X-ray....
Abstract. The Solar Influences Data analysis Center (SIDC) is the World for production and distribution of International Sunspot Index, coordinating a network about 80 stations worldwide. From this core activity, SIDC has grown in recent years to European center nowcasting forecasting solar activity on all timescales. This paper reviews services (data, forecasts, alerts, software) that currently offers scientific community. operates instruments both ground space. USET telescope Brussels...
Abstract On 2017 April 1 and 3, two large eruptions on the western solar limb, which were associated with M4.4- M5.8-class flares, respectively, observed Sun Watcher Active Pixels Image Processing (SWAP) Extreme Ultraviolet (EUV) telescope board Project for Board Autonomy 2 ( PROBA2 ) spacecraft. The field-of-view (FOV) of SWAP, combined an advantageous off-point, allows us to study up approximately radii (Rs), where space-based coronagraph observations begin. These measurements provide some...
Abstract We investigate the relationship between different transients such as blinkers detected in images taken at 304 Å, extreme ultraviolet coronal bright points (ECBPs) 193 X-ray (XCBPs) 94 Å on Atmospheric Imaging Assembly, and magnetic features observed by Helioseismic Magnetic Imager during 10 yr of solar cycle 24. An automatic identification method is applied to detect transients, YAFTA algorithm used extract features. Using data, we total 7,483,827 blinkers, 2,082,162 ECBPs,...
Context. Accurate detections of frequent small-scale extreme ultraviolet (EUV) brightenings are essential to the investigation physical processes heating corona. Aims. We detected brightenings, termed campfires, using their morphological and intensity structures as observed in coronal EUV imaging observations for statistical analysis. Methods. applied a method based on Zernike moments support vector machine classifier automatically identify track campfires by Solar Orbiter/Extreme...
Abstract We report observations of energetic electron flux and phase space density to show that a relatively weak magnetic storm with Sym‐H min ≈−50 nT, resulted in relativistic ultrarelativistic enhancement two orders magnitude similar the St. Patrick's event 2015, an extreme ≈−235 nT. This appeared at energies up ≈10 MeV, lasted for least 24 days, was not recorded geosynchronous orbit where most weather alert data are collected. By combined analysis radial profiles Fokker‐Planck...
Abstract On 2017 September 6 and 10, the strongest X9.3 X8.2 flares of decade occurred in active region NOAA Active Region 12673. During these flares, Sun Watcher with Pixels Image Processing (SWAP) telescope on board Project for Onboard Autonomy 2 ( PROBA2 ) satellite registered unusual alternate brightening darkening western corona at heliocentric distances ≈1.2–1.7 R ☉ . The flare was accompanied by coronal up to 30%–45% ≈1.35–1.7 Numerical simulations showed that this might be produced...
Abstract. An important task for the problem of coronal heating is to produce reliable evaluation statistical properties energy release and eruptive events such as micro-and nanoflares in solar corona. Different types distributions peak flux, count rate measurements, pixel intensities, total flux or emission measures increases waiting times have appeared literature. This raises question a precise classification distributions. For this purpose, we use method proposed by K. Pearson at beginning...
Recent observations of Krucker & Benz ([CITE]) give strong support to Parker's hypothesis that small-scale dissipative events make up the main contribution quiet Sun coronal heating. They also showed these are associated not only with magnetic network, but cell interiors (Benz [CITE]). Taking into account in addition results analysis performed by Priest co-authors who demonstrated heating is quasi-homogeneous along arcs, we come conclusion sources driving sources. Typically they order or...
Abstract On February 21 and March – 22, 2021, the Extreme Ultraviolet Imager (EUI) onboard Solar Orbiter observed three prominence eruptions. The eruptions were associated with coronal mass ejections (CMEs) by Metis, Orbiter’s coronagraph. All also instruments Solar–TErrestrial RElations Observatory (Ahead; STEREO-A), Dynamics (SDO), Heliospheric (SOHO). Here we present an analysis of these We investigate their morphology, direction propagation, 3D properties. demonstrate success applying...
Introduction. Here, we present a study of 33 Klebsiella pneumoniae strains isolated in Rostov-on-Don 2021–2023 from patients with community-acquired pneumonia. The bacterial were analyzed according to the traits known be linked hypervirulence. aim was compare by analyzing phenotypic (siderophore activity, hypermucoviscosity, bacteriophage sensitivity) and genotypic (presence plasmids, siderophore genes, rmpA rmpA2 genes) properties. Materials methods. Assessment sensitivity,...
The Solar Orbiter mission, with an orbit outside the Sun Earth line and leaving ecliptic plane, opens up opportunities for combined analysis of measurements obtained by solar imagers spectrometers. For first time, different space spectrometers will be located at wide angles to each other, allowing three-dimensional (3D) spectroscopy atmosphere. aim this work is prepare methodology facilitate reconstruction 3D vector velocities from two stereoscopic LOS Doppler velocity using Spectral Imaging...
Recent measurements of quiet Sun heating events by Krucker & Benz (1998) give strong support to Parker's (1988) hypothesis that small-scale dissipative make the main contribution heating.Moreover, combining their observations with analysis Priest et al. (2000), it can be concluded sources driving these are also sources, typically order (or smaller than) 2000 km and below resolution modern instruments.Thus question arises how small scale participate in larger-scale observable phenomena,...