G. A. Bazilevskaya
A5045213996- Solar and Space Plasma Dynamics
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Ionosphere and magnetosphere dynamics
- Atmospheric Ozone and Climate
- Astro and Planetary Science
- Particle Detector Development and Performance
- Solar Radiation and Photovoltaics
- Particle physics theoretical and experimental studies
- Geomagnetism and Paleomagnetism Studies
- Atomic and Subatomic Physics Research
- Earthquake Detection and Analysis
- Gamma-ray bursts and supernovae
- Neutrino Physics Research
- Radiation Therapy and Dosimetry
- Stellar, planetary, and galactic studies
- Nuclear Physics and Applications
- Calibration and Measurement Techniques
- Geophysics and Gravity Measurements
- Spacecraft and Cryogenic Technologies
- Radiation Detection and Scintillator Technologies
- Radioactive Decay and Measurement Techniques
- Astronomy and Astrophysical Research
- Scientific Research and Discoveries
- Cosmology and Gravitation Theories
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
2015-2024
Shandong Institute of Advanced Technology
2023
Kiel University
2023
Lomonosov Moscow State University
2023
Institute of Engineering Physics
2023
National Research Nuclear University MEPhI
2023
Russian Academy of Sciences
1995-2021
Fédération française de cardiologie
2021
Istituto Nazionale di Fisica Nucleare
2019
Agenzia Spaziale Italiana
2019
Protons and helium nuclei are the most abundant components of cosmic radiation. Precise measurements their fluxes needed to understand acceleration subsequent propagation rays in our Galaxy. We report precision proton spectra rigidity range 1 gigavolt 1.2 teravolts performed by satellite-borne experiment PAMELA (payload for antimatter matter exploration light-nuclei astrophysics). find that spectral shapes these two species different cannot be described well a single power law. These data...
The satellite-borne experiment PAMELA has been used to make a new measurement of the cosmic-ray antiproton flux and antiproton-to-proton ratio which extends previously published measurements down 60 MeV up 180 GeV in kinetic energy. During 850 days data acquisition approximately 1500 antiprotons were observed. are consistent with purely secondary production Galaxy. More precise models required for complete interpretation results.
A new measurement of the cosmic-ray antiproton-to-proton flux ratio between 1 and 100 GeV is presented. The results were obtained with PAMELA experiment, which was launched into low-Earth orbit on-board Resurs-DK1 satellite on June 15th 2006. During 500 days data collection a total about 1000 antiprotons have been identified, including above an energy 20 GeV. high-energy are tenfold improvement in statistics respect to all previously published data. follow trend expected from secondary...
Precision measurements of the electron component in cosmic radiation provide important information about origin and propagation rays Galaxy. Here we present new results regarding negatively charged electrons between 1 625 GeV performed by satellite-borne experiment PAMELA. This is first time that cosmic-ray have been identified above 50 GeV. The spectrum can be described with a single power law energy dependence spectral index -3.18 +- 0.05 region influenced solar wind (> 30 GeV). No...
Precision measurements of the positron component in cosmic radiation provide important information about propagation rays and nature particle sources our Galaxy. The satellite-borne experiment PAMELA has been used to make a new measurement cosmic-ray flux fraction that extends previously published up 300 GeV kinetic energy. combined energy spectrum unique tool constrain interpretation models. During recent solar minimum activity period from July 2006 December 2009 approximately 24500...
[1] The differential energy spectrum of galactic cosmic rays near Earth is often parameterized by the force field model with only time-dependent parameter, modulation potential ϕ. Here we present a series reconstructed monthly values for period from July 1936 through December 2009. This works extends our earlier study employing new data and improving reconstruction method. presented composite three parts. most reliable part based on world network sea level neutron monitors covers since April...
The energy spectra of galactic cosmic rays carry fundamental information regarding their origin and propagation. These spectra, when measured near Earth, are significantly affected by the solar magnetic field. A comprehensive description radiation must therefore include transport modulation inside heliosphere. During end last decade Sun underwent a peculiarly long quiet phase well suited to study processes. In this paper we present proton from July 2006 December 2009 PAMELA. large collected...
Precision measurements of the electron component in cosmic radiation provide important information about origin and propagation rays Galaxy not accessible from study cosmic-ray nuclear components due to their differing diffusion energy-loss processes. However, when measured near Earth, effects modulation galactic heliosphere, particularly significant for energies up at least 30 GeV, must be properly taken into account. In this paper (e^-) spectra by PAMELA down 70 MeV July 2006 December 2009...
The propagation of cosmic rays inside our galaxy plays a fundamental role in shaping their injection spectra into those observed at Earth. One the best tools to investigate this issue is ratio fluxes for secondary and primary species. boron-to-carbon (B/C) ratio, particular, sensitive probe mechanisms. This paper presents new measurements absolute boron carbon nuclei, as well B/C from PAMELA space experiment. results span range 0.44 - 129 GeV/n kinetic energy data taken period July 2006 March 2008.
Precise measurements of the time-dependent intensity low energy ($<50$ GeV) galactic cosmic rays are fundamental to test and improve models which describe their propagation inside heliosphere. Especially, data spanning different solar activity periods, i.e. from minimum maximum, needed achieve comprehensive understanding such physical phenomenon. The phase between 23$^{rd}$ 24$^{th}$ cycles was peculiarly long, extending up beginning 2010 followed by maximum phase, reached during early 2014....
We present the space spectrometer PAMELA observations of proton and helium fluxes during December 13 14, 2006 solar particle events. This is first direct measurement energetic particles in with a single instrument energy range from $\sim$ 80 MeV/n up to 3 GeV/n. In event measured spectra protons were compared results obtained by neutron monitors other detectors. Our measurements show spectral behaviour different those derived monitor network. No satisfactory analytical fitting was found for...
Cosmic-ray electrons and positrons are a unique probe of the propagation cosmic rays as well nature distribution particle sources in our Galaxy. Recent measurements these particles challenging basic understanding mechanisms production, acceleration, rays. Particularly striking differences between low energy results collected by space-borne PAMELA AMS-02 experiments older pointing to sign-charge dependence solar modulation cosmic-ray spectra. The experiment has been measuring time variation...
ABSTRACT The cosmic-ray hydrogen and helium ( 1 H, 2 3 He, 4 He) isotopic composition has been measured with the satellite-borne experiment PAMELA , which was launched into low-Earth orbit on board Resurs-DK1 satellite 2006 June 15. rare isotopes H He in cosmic rays are believed to originate mainly from interaction of high-energy protons galactic interstellar medium. between 100 1100 MeV/n for 1400 using two different detector systems over 23rd solar minimum July 2007 December.
Energetic electron precipitation (EEP) is associated with solar activity and space weather plays an important role in the Earth’s polar atmosphere. electrons from radiation belt precipitate into atmosphere during geomagnetic disturbances cause additional ionization rates middle These induced atmospheric lead to formation of radicals ion-molecular reactions at heights mesosphere upper stratosphere reactive compounds odd nitrogen NOy hydrogen HOx groups. are involved catalytic that destroy...