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Institute: Astronomical Institute

Analysis of dynamic and physical characteristics of interplanetary bodies in the vicinity of the Earth's path.
Analýza dynamických a fyzikálnych charakteristík medziplanetárnych telies v okolí zemskej dráhy
Program: VEGA
Project leader: doc. RNDr. Svoreň Ján DrSc.
Annotation:This project is intended to the study of small bodies in the Solar System around the Earth's path. Scientific goals change continuously from the study of structures in meteoroid streams to changes on their parent bodies. The results will be obtained by comparing observations with statistical processing and computer modeling. Asteroids and comets will be observed using the telescopes of the Skalnaté Pleso Observatory: 0,61-m Newton and new 1,3-m Cassegrain-Nasmyth, which will be the largest specialized device for observing of Near-Earth Asteroids in Europe. We will analyze meteoroids in the orbit of 1P/Halley, on a base of our statistical method of indices and dynamical modeling of particles ejecting from the cometary nucleus. We will perform long-term observations of selected comets using CCD camera in the Skalnaté Pleso Observatory to pursue a goal of the reason of sudden outbursts of comets. We will create shape models of asteroids and analyze their possibilities as as parent bodies of meteor streams.
Duration: 1.1.2014 - 31.12.2017

Physical processes in interacting binaries and extrasolar planetary systems.
Fyzikálne procesy v interagujúcich dvojhviezdach a extrasolárnych planetárnych sústavách
Program: VEGA
Project leader: RNDr. Pribulla Theodor CSc.
Annotation:This research project is aimed at the understanding of physical processes in interacting binaries and extrasolar planetary systems. The principal goals are accurate determination of the absolute parameters of binaries (masses, radii and luminosities) but also detection and study of substellar companions to single and binary stars. The project is related to two international observing campaigns: YETI and Dwarf.
Duration: 1.1.2014 - 31.12.2017

Interacting binaries – Key for the Understanding of the Universe
Interagujúce dvojhviezdy – Kľúč k porozumeniu Vesmíru
Program: SRDA
Project leader: RNDr. Skopal Augustín DrSc.
Annotation:The cycle of matter from the interstellar medium into stars and then back is the basic engine that drives the evolution of matter across the age of the Universe. During evolution of stars, heavy elements enrich their interior, where extreme conditions can give rise to stellar explosions at the end of the star's evolution. Extreme explosions represent donors of particles, photons and heavy elements in the interstellar medium that is of crucial importance in understanding the circulation of matter in our Universe. More than 60% of stars is gravitationally bounded with another star, which can interact with. The pivotal aim of this project is the investigation of interacting binaries that lie at specific stages of their evolution, which allow us a better understanding of their outbursts, to determine absolute parameters of binary systems as well as to detect and determine basic properties of extrasolar planets – key ingredients for better understanding the circulation of matter in the Universe. We achieve our particular goals by the method of multifrequency modelling the energy distribution in the spectrum during outbursts, and by modelling an accurate multicolour photometric and spectroscopic measurements of the investigated objects (cataclysmic variables, W UMa and T Tauri stars, exoplanets).
Duration: 1.7.2016 - 30.6.2020

Dynamical and magnetic properties of active phenomena in the solar atmosphere – complex study.
Komplexný výskum dynamických a magnetických vlastností aktívnych javov v atmosfére Slnka.
Program: VEGA
Project leader: Mgr. Gömöry Peter PhD.
Annotation:Temporal variability and evolution of the magnetic fields significantly affects excitation, evolution and propagation of the flares and CME’s in the solar atmosphere, i.e. events which strongly influence Earth environment and technological devices. Thus, the main goal of this project is to study topology, temporal evolution and dynamical properties of the solar magnetic phenomena. New findings expected in this field will be delivered by a combination of a) the highest quality data, b) specialized routines for numerical modelling and c) inversion codes developed to determine the components of magnetic vector fields related to phenomena under study. We plan to use spectroscopic and spectro-polarimetric measurements taken by the largest ground-based telescopes (GREGOR, SST, THEMIS) and space-born instruments (IRIS, Hinode) to reach the goals of the project. Particularly important part of the data acquisition will be observations performed using unique infrastructure at Lomnický Peak Observatory (Comp-S, SCD).
Duration: 1.1.2016 - 31.12.2019

The meteoroid population, its origin, evolution and interaction with the Earth
Populácia meteoroidov, ich pôvod, vývoj a interakcia so Zemou
Program: VEGA
Project leader: RNDr. Hajduková Mária PhD.
Annotation:The project will investigate the meteoroid population in the vicinity of the Earth through systematic monitoring, using our own observational techniques; from the radio observation, through optical observations, up to investigations of their parent comets and asteroids, which provides a complex view of the broad mass interval of the investigated objects. The project‘s objectives are to determine the influx of meteoroids, to confirm the activity of meteor streams included in the working list of the IAU and eventually to discover new ones, to examine the genetic and structural relations of the meteor streams crossing the Earth’s orbit and NEOs, to analyse the dynamic evolution of their orbits, to clarify the origin of the particles, and to identify meteors caused by space debris, a hitherto neglected population. This will be followed by a modeling of a complete meteoroid particles flux into the Earth‘s atmosphere, which will reveal substantial details about the origin and structure of the whole Solar System.
Duration: 1.1.2014 - 31.12.2017

Investigation of development of the physical activity of dynamical new comets over the wide range of heliocentric distances
Skúmanie vývoja fyzikálnej aktivity dynamickych nových komét v širokom rozsahu heliocentrických vzdialeností
Program: SASPRO
Project leader: Mgr. Ivanova Viktorovna Oleksandra PhD.
Annotation:The main goal of the presented project is the study of physical properties of the atmospheres and tails in the dynamically new comets and comparison with comets from others dynamical groups. Currently, attempts are underway to establish a taxonomy of comets on the basis of their composition and to link it to the place of their origin. A comparison of physical characteristics of short-period comets with those for long-period and new comets may elucidate which properties of comets are primordial and which are a product of subsequent evolution. The physical properties of the body mainly depend on genetic factors such as stratification of temperature with distance from the Sun, structure and density on the surfaces of bodies, the ratio of volatile and refractory materials and so on. However, the role of evolutionary processes that have determined the dynamics of small bodies, sources of internal energy, and so on, can also be significant. It is recognized that the temperature gradient in the initial dust cloud and the presence of massive proto-planets influenced the processes of accumulation, formation and evolution of small bodies in the Solar System. The result of this process are the different properties of bodies in the main asteroid belt (the difference between the properties of the main types of asteroids S, C, E, etc.), objects of the Kuiper Belt and the Oort cloud. Collisions, dynamic and evolutionary processes have generated in the Solar System objects with transient properties - meteoroid streams, objects such as Centaurs, comets with dynamic characteristics of the main asteroid belt, comets different classes as regards polarization and thermal properties and dormant cometary nuclei. Main goal of first year of work is a comprehensive study of the observed characteristics of the radiation scattered by dust particles and gas properties of comets of different dynamical groups in the Solar System. A dust and a gas are parts of atmospheres of comets, active centaurs, and also a new class of objects - comets of the main asteroid belt. Dust and gas play an important role in the process of forming different bodies and in their evolution. The main observable characteristics of scattered radiation, such as intensity, color, polarization, their spatial and spectral characteristics depend on a mechanism of the scattering of light on the dust particles and the physical properties of dust, which are size, composition, structure and form. So, a study of the properties of radiation scattered by dust particles of different objects, is the basis for the development of theoretical ideas about the interaction of radiation with matter, building physical and cosmological models of celestial bodies.
Duration: 25.2.2016 - 31.12.2018

Veldkamp Spaces in Quantum Information and Astrophysics
Veldkampove priestory v kvantovej informácii a astrofyzike
Program: VEGA
Project leader: RNDr. Saniga Metod DrSc.
Annotation:The project will deal with the role of the concept of the Veldkamp space of a point-line incidence structure in the framework of both quantum information theory and the so-called black-hole-qubit correspondence (BHQC). Given a particular point-line incidence structure (finite geometry), the structure of its Veldkamp space will be employed as an essential and fairly efficient tool for assessing, on the one side, its possible relevance for quantum information theory and/or BHQC and, on the other side, for revealing finer traits of its physically relevant structure that would otherwise go unnoticed. A special attention will be given to Veldkamp spaces featuring a “point-within-a-point” property, as these may furnish particularly interesting representations of quantum contextuality/quantum non-locality. New (astro)physics behind possible generalizations of Veldkamp spaces will also be given a serious thought.
Duration: 1.1.2016 - 31.12.2019

Selected problems of the origin of some small-body groups in the Solar System
Vybrané problémy vzniku niektorých skupín malých telies Slnečnej sústavy
Program: VEGA
Project leader: RNDr. Neslušan Luboš CSc.
Annotation:We would like to contribute to solving of some essential problems of the Solar-System cosmogony within the our project. It is necessary to work out a well acceptable model of the growth of Uranus and Neptune from the stage of planetary embryos sup to their current masses. In relation to the model, a simulation of subsequent migration of both planets to their current orbits is desirable. Also, we would follow if the trans-Neptunian population is formed at this process and if its final structure is consistent with the current one. In extension, we will analyse the Dynamics of Centaurs aiming to find out and prove their source regions. In a shorter distance and time scales, there is an analogous problem: the formation of meteoroid streams by a release of particles from the parent bodies. Here, we would want to go on with the looking for such the parents, which have their orbit in a relatively large distance from the Earth’s orbit, but anyway the associated shower meteors are observed in Earth’s atmosphere.
Duration: 1.1.2014 - 31.12.2017

The total number of projects: 8