5 papers
Physics. Tasks With Solutions
Lidiia L. Chinarova, Ivan L. Andronov, Nina V. Savchuk +2
The study guide (textbook) is part of a set of materials designed to support high-quality practical training in physics. It includes a collection of tasks for organizing both in-cl…
Determination of Light Curve Parameters of Poorly Studied Eclipsing Variables Using Data from Tess and Other Sky Surveys
Vladyslava I. Marsakova, Ivan L. Andronov, Victoriia O. Borshchenko +6
A group of poorly studied eclipsing variables (the classification of which is marked as uncertain and/or the period of brightness changes is uncertain) has been studied with the us…
Multi-harmonic and special shape/pattern/template approximations of discrete signals with generally irregular arguments
Ivan L. Andronov, Hanna M. Akopian, Vitalii V. Breus +7
The invited review of own algorithms and software (MAVKA and MCV) for the data analysis of astronomical signals - irregularly spaced, multi-periodic multi-harmonic, periodogram ana…
The HADS Star CSS_J102714.3+205943: a Component of a Binary System with an Elliptic Orbit?
Maksym Yu. Pyatnytskyy, Ivan L. Andronov
We analyzed period changes of the high-amplitude Delta Scuti variable star CSS_J102714.3+205943 for about 20 years, utilizing data from the automated sky surveys along with our own…
Spin-period variations in the intermediate polar RX J2133.7+5107
V. Breus, I. L. Andronov, P. Dubovsky +3
We report the results of long-term time series photometry on RX J2133.7+5107 (also known as 1RXS J213344.1+510725) obtained at several observatories. Using data taken during 17 yea…