A5003151964- Solar and Space Plasma Dynamics
- Ionosphere and magnetosphere dynamics
- Geomagnetism and Paleomagnetism Studies
- Astro and Planetary Science
- Atmospheric Ozone and Climate
- Astrophysics and Cosmic Phenomena
- Solar Radiation and Photovoltaics
- Earthquake Detection and Analysis
- Dark Matter and Cosmic Phenomena
- Radiation Therapy and Dosimetry
- Geophysics and Gravity Measurements
- Stellar, planetary, and galactic studies
- Photovoltaic System Optimization Techniques
- Geotechnical and Geomechanical Engineering
- Nuclear Physics and Applications
- Radiation Detection and Scintillator Technologies
- Ultrasonics and Acoustic Wave Propagation
- Particle accelerators and beam dynamics
- Space Exploration and Technology
- Spacecraft Design and Technology
- Power Systems and Renewable Energy
- Space exploration and regulation
- Astronomy and Astrophysical Research
- Spacecraft and Cryogenic Technologies
- Particle Detector Development and Performance
Institute of Terrestrial Magnetism Ionosphere and Radio Wave Propagation
2015-2024
KBR (United States)
2022
Institute of Solar-Terrestrial Physics
2016
Russian Academy of Sciences
2013-2015
Solar Energetic Particle (SEP) events are interesting from a scientific perspective as they the product of broad set physical processes corona out through extent heliosphere, and provide insight into particle acceleration transport that widely applicable in astrophysics. From operations perspective, SEP pose radiation hazard for aviation, electronics space, human space exploration, particular missions outside Earth's protective magnetosphere including to Moon Mars. Thus, it is critical...
As the current solar cycle 25 progresses and moves towards maxima, activity is increasing extreme space weather events are taking place. Two severe geomagnetic storms accompanied by two large Forbush decreases in galactic cosmic ray intensity were recorded March May, 2024. More precisely, on 24 2024, a G4 (according to NOAA Space Weather Scale for Geomagnetic Storms) storm was registered, with corresponding indices Kp Dst equal 8 −130 nT, respectively. On same day, majority of ground-based...
The work investigates the features of galactic cosmic ray density and anisotropy behavior their relation to solar sources, interplanetary geomagnetic disturbances from May 8 13, 2024. During this time, powerful flares fast CMEs were recorded, leading registration an extreme storm along with one most significant Forbush effects for entire observation period. All calculations characteristics are made using data global neutron monitor network unique methods maintained at IZMIRAN: Global Survey...
Abstract Interplanetary coronal mass ejections (ICMEs) are the counterparts of (CMEs) that extend in interplanetary (IP) space and interact with underlying solar wind (SW). ICMEs their corresponding shocks can sweep out galactic cosmic rays (GCRs) thus modulate intensity, resulting non-recurrent Forbush decreases (FDs). In this work, we selected all FDs were associated a sudden storm commencement (SSC) at Earth, driver (e.g., CME) was clearly identified as ICME’s source. We introduce employ...
Aims. We present observations of the first coronal mass ejection (CME) observed by Solar Orbiter spacecraft on April 19, 2020 and associated Forbush decrease (FD) measured High Energy Telescope (HET). This CME is a multi-spacecraft event that was also seen near Earth following day. Methods. highlight capabilities HET for observing small short-term variations galactic cosmic ray count rate using its single detector counters. applied analytical ForbMod model to FD measurements reproduce at...
ABSTRACT In this paper, Forbush decrease (FD) profiles are compared for events associated with (i) coronal mass ejections from active regions accompanied by solar flares (AR CMEs), (ii) filament eruptions away (non-AR and (iii) high-speed streams (HSSs) holes (CHs). FD described time parameters that delayed an onset to the registration of maximum values cosmic ray (CR) density variations, CR hourly decrease, equatorial anisotropy, wind (SW) speed, interplanetary magnetic field (IMF) strength...
Abstract The rigidity dependence of all Forbush decreases (FDs) recorded from 1995 to 2015 has been determined using neutron monitor (NM) and Solar Heliospheric Observatory (SOHO) (EPHIN) spacecraft data, covering the energy (rigidity) range ∼433 MeV (1 GV) 9.10 GeV (10 GV). We analyzed a total 421 events spectrum in with an inverse power-law fit. As result, mean spectral index was identified be 〈 γ F 〉 = 0.46 ± 0.02. majority (∼66%) FDs have within 0.3–0.7. remaining one-third (∼33%) either...
ABSTRACT The paper discusses changes in various characteristics of the solar wind, interplanetary magnetic field, geomagnetic activity, and cosmic rays during registration paired interacting wind disturbances on Earth using data base Forbush effects – FEID. cases pair interaction are considered for 1995–2020: (i) successive coronal mass ejections; (ii) ejections high-speed streams from holes; (iii) holes. It is shown that first events a pair, times reaching maximum values field velocity...
ABSTRACT In this paper, Forbush decreases (FDs) from 1997 to 2020 associated with coronal mass ejections active and non-active regions are compared between themselves FDs caused by high-speed streams holes. The two types of sporadic also when corresponding solar wind (SW) disturbances contain, or do not magnetic clouds (MCs) near Earth. Cosmic ray density anisotropy variations, SW speed, interplanetary field (IMF) strength, geomagnetic indices have been examined using statistical methods....