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- St Petersburg UniversityRU141 papers
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7 papers · 1 filter
Fast error-controlling MOID computation for confocal elliptic orbits
Roman V. Baluev, Denis V. Mikryukov
We present an algorithm to compute the minimum orbital intersection distance (MOID), or global minimum of the distance between the points lying on two Keplerian ellipses. This is a…
Quasi-periodic pulsations in a solar flare with an unusual phase shift
Elena G. Kupriyanova, Larisa K. Kashapova, Tom Van Doorsselaere +3
Two kinds of processes could occur during the flare decay phase: processes of energy release or processes of energy relaxation. Quasi-periodic pulsations (QPPs) of the broadband em…
Light-by-light-scattering contributions to the Lamb shift in light muonic atoms
Evgeny Yu. Korzinin, Valery A. Shelyuto, Vladimir G. Ivanov +2
We consider one-loop light-by-light-scattering contributions to the Lamb shift of the states in light muonic hydrogen like atoms at . The contributions are of…
Parameters of the Link between the Optical and Radio Frames from Gaia DR2 Data and VLBI Measurements
V. V. Bobylev
Based on published data, we have assembled a sample of 88 radio stars for which there are both trigonometric parallax and proper motion measurements in the Gaia DR2 catalogue and V…
Search for Stellar Streams Based on Data from the RAVE5 and Gaia TGAS Catalogues
A. T. Bajkova, V. V. Bobylev
We have analyzed the space velocities of stars with the proper motions and trigonometric parallaxes from the Gaia TGAS catalogue in combination with the line-of-sight velocities fr…
Testing the distance scale of the Gaia TGAS catalogue by kinematic method
V. V. Bobylev, A. T. Bajkova
We have studied the simultaneous and separate solutions of the basic kinematic equations obtained using the stellar velocities calculated on the basis of data from the Gaia TGAS an…