Solar activity, Solar magnetic fields, Solar-terrestrial connections
Research Fields:
Astronomy
Previous and Current Research
I studied in detail the spectra of many solar flares and sunspots, using mainly my own observations (from the 1970s to the present) on the solar telescope of the Astronomical Observatory of the University of Kiev. Superstrong magnetic fields (104 – 105 G) were detected in flares, and their properties were studied. Semi-empirical and theoretical MHD models of observed phenomena were constructed. Extremelly strong magnetic fields were detected and studied also in sunspots. Important correlations were found between the most intense manifestations of solar activity and some processes on the Earth.
Future Projects and Goals
Our current projects relate to the improvement of methods for diagnostics of spatially unresolved magnetic fields on the Sun, given that the range of their possible strengths is much wider than it is currently believed. We place great hopes on new observational data from the space observatory 'Hinode', as well as from the ground-based observatory GREGOR. Stokes diagnostics of active formations on the Sun using modern inverse methods and program codes should ensure the receipt of new important data on solar magnetism.
Methodological and Technical Expertise
Solar spectroscopy, Magnetic field measurements using the Zeeman effect, Diagnostics of spatially unresolved magnetic fields, Semi-empirical and theoretical models of active processes on the Sun.
Selected Publications
Soloviev A.A., Lozitsky V.G. 1986.
A force-free model of a fine-structure magnetic element.
Kinematika i Fizika Nebesnykh Tel (2), – 1986 pp.80-84.
Lozitska N.I., Lozitsky V.G., Soloviev ΐ.ΐ.
Strong magnetic fields in solar flares: data of observations and a theoretical model,
Kinematika i Fizika Nebesnykh Tel (7), no. 6 1991 pp.40-47.
Lozitsky V.G.,
Superstrong magnetic fields in the solar atmosphere,
Kinematics and Physics of Celestial Bodies ( 9), no. 3 1993 pp. 18-25.
Lozitsky V.G., Baranovsky E.A., Lozitska N.I., Leiko U.M.
Observations of magnetic field evolution in a solar flare,
Solar Physics (191), no. 1 2000 pp. 171-183.
Lozitsky V.G., Staude J.
Observational evidences for a multi-component magnetic field structure in solar flares.
Journal of Astrophysics and Astronomy (29) 2008 pp. 387-404.
Lozitsky V.G.
Magnetic fields anf FeI line profiles in the major solar flare on October 28, 2003.
Astronomy Letters ( 35), no.2 2009 pp.136-142.
Lozitsky, V.G.
Observational evidences for extremely strong magnetic fields in solar flares.
International Journal of Astronomy and Astrophysics (1), no.3 2011 pp.147154.
Kirichek E.A., Solov’ev A.A., Lozitskaya N.I., Lozitskii V.G.
Magnetic fields in a limb flare on July 19, 2012.
Geomagnetism and Aeronomy (53), no.7 2013 pp. 831-834.
Gordovskyy M., Lozitsky V.G.,
Observations of unresolved photospheric magnetic fields in solar flares using FeI and CrI lines.
Solar Physics (289), no.10 2014 pp. 3681-3701.
Lozitsky V.G.,
Small-scale magnetic field diagnostics in solar flares using the bisectors of I ± V profiles.
Advances in Space Research (55), no.3 2015 pp. 958-967.
Lozitsky V.G.
Indications of 8-kilogauss magnetic field existence in a sunspot umbra.
Advances in Space Research (57), no. 1 2016 pp.398-407.
Lozitsky V.G.
Spectral manifestations of extremely strong magnetic fields in the sunspot umbra,
Advances in Space Research (59), no. 5 2017 pp.1416-1424.
Contacts
Homepage: https://www.researchgate.net/profile/V_Lozitsky/
lozitsky_v@ukr.net
lozitsky@observ.univ.kiev.ua
|