Alexander (Sasha) Plavin

PhD in Astrophysics

Major astrophysical projects of mine are listed and illustrated below.
For the complete publication list, see NASA ADS or Google Scholar
You can also reach me via alexander plav.in

Astrophysics

active galaxies, radio, optical, neutrino astronomy, ...

High-Energy neutrinos are born in blazars
Publications
Directional Association of TeV to PeV Astrophysical Neutrinos with Radio Blazars
A. V. Plavin, Y. Y. Kovalev, Yu. Kovalev, S. V. Troitsky
2021, ApJ
Observational Evidence for the Origin of High-energy Neutrinos in Parsec-scale Nuclei of Radio-bright Active Galaxies
Alexander Plavin, Yuri Kovalev, Yuri Kovalev, Sergey Troitsky
2020, ApJ
Astronomer's Telegrams
The flaring radio-bright blazar PKS 0215+015 coincident with the high energy neutrino alert IceCube-220225A 2022, A. V. Plavin, Y. Y. Kovalev, S. V. Troitsky, Yu. Kovalev, T. Hovatta, S. Kiehlmann, I. Liodakis, A. C. S. Readhead, A. K. Erkenov, Y. V. Sotnikova, M. Tornikoski, A. Lahteenmaki, S. G. Jorstad, A. P. Marscher, J. L. G \'o mez, M. Giroletti, N. Marchili, S. Righini, A. B. Pushkarev
The radio-bright blazar PKS 1741-03 coincident with the high energy neutrino alert IceCube-220205B 2022, Y. Y. Kovalev, A. V. Plavin, S. V. Troitsky, Yu. Kovalev, T. Hovatta, S. Kiehlmann, I. Liodakis, A. C. S. Readhead, A. K. Erkenov, Y. V. Sotnikova, M. Tornikoski, A. Lahteenmaki, S. G. Jorstad, A. P. Marscher, J. L. G \'o mez, M. Giroletti, N. Marchili, S. Righini, A. B. Pushkarev
Blazar 0250-001 with bright VLBI-compact core is a probable neutrino candidate source for IceCube-211116A 2021, Y. Y. Kovalev, A. V. Plavin, S. V. Troitsky, Yu. Kovalev, A. V. Popkov
Radio blazar 1801+253 is associated with IceCube-210811A and flares immediately after the neutrino event 2021, S. V. Troitsky, Yu. Sotnikova, A. K. Erkenov, Yu. Kovalev, Y. Y. Kovalev, A. V. Plavin, A. V. Popkov
Blazars J0201-1132 and J0206-1150 with bright VLBI-compact cores are probable neutrino source candidates for IceCube-201130A 2020, A. V. Plavin, Y. Y. Kovalev, Yu. Kovalev, S. V. Troitsky
The RATAN-600 2-22 GHz continuum spectrum of the neutrino association quasar TXS 1100+122 is slightly rising 2020, Yu. Kovalev, Yu. Sotnikova, A. K. Erkenov, Y. Y. Kovalev, A. V. Plavin, S. V. Troitsky
Flat spectrum radio quasar TXS 1100+122 has a bright VLBI-compact core - as expected for neutrino candidate sources 2020, Y. Y. Kovalev, S. V. Troitsky, Yu. Kovalev, A. V. Plavin
Press Releases
Сверхмассивные черные дыры назвали источником всех космических нейтрино
2021
Physics of quasars revealed by radio-optical astrometry
Publications
Optical polarization properties of AGNs with significant VLBI-Gaia offsets
Y. Y. Kovalev, D. I. Zobnina, A. V. Plavin, D. Blinov
2020, MNRAS
Dissecting the AGN Disk-Jet System with Joint VLBI-Gaia Analysis
A. V. Plavin, Y. Y. Kovalev, L. Y. Petrov
2019, ApJ
A quantitative analysis of systematic differences in the positions and proper motions of Gaia DR2 with respect to VLBI
L. Petrov, Y. Y. Kovalev, A. V. Plavin
2019, MNRAS
VLBI-Gaia offsets favor parsec-scale jet direction in active galactic nuclei
Y. Y. Kovalev, L. Petrov, A. V. Plavin
2017, A&A
Press Releases
3D-очки для квазаров
2020
«Хвосты» квазаров могут запутать космический телескоп и одновременно помочь ученым
2019
Путаница в показаниях: как расхождения в данных телескопов помогли учёным «ощупать» квазары и их «хвосты»
2017
Synchrotron opacity in quasar jets
Publications
A bias in VLBI measurements of the core shift effect in AGN jets
I. N. Pashchenko, A. V. Plavin, A. M. Kutkin, Y. Y. Kovalev
2020, MNRAS
Significant core shift variability in parsec-scale jets of active galactic nuclei
A. V. Plavin, Y. Y. Kovalev, A. B. Pushkarev, A. P. Lobanov
2019, MNRAS
Frequency-Dependent Core Shifts in Ultracompact Quasars
P. A. Voitsik, A. B. Pushkarev, Yu. Kovalev, A. V. Plavin, A. P. Lobanov, A. V. Ipatov
2018, ARep
Press Releases
Астрономы убедились, что квазары не «прибиты гвоздями» к небу
2019
Other
Publications
FRB 121102: Drastic changes in the burst polarization contrasts with the stability of the persistent emission
A. Plavin, Z. Paragi, B. Marcote, A. Keimpema, J. W. T. Hessels, K. Nimmo, H. K. Vedantham, L. G. Spitler
2022, MNRAS
Direction of Parsec-Scales Jets for 9220 Active Galactic Nuclei
A. V. Plavin, Y. Y. Kovalev, A. B. Pushkarev
2022, ...
Tracing Milky Way scattering by compact extragalactic radio sources
T. A. Koryukova, A. B. Pushkarev, A. V. Plavin, Y. Y. Kovalev
2022, ...
RadioAstron discovers a mini-cocoon around the restarted parsec-scale jet in 3C 84
T. Savolainen, G. Giovannini, Y. Y. Kovalev, M. Perucho, J. M. Anderson, G. Bruni, P. G. Edwards, A. Fuentes, M. Giroletti, J. L. G \'o mez, K. Hada, S. S. Lee, M. M. Lisakov, A. P. Lobanov, J. L \'o pez-Miralles, M. Orienti, L. Petrov, A. V. Plavin, B. W. Sohn, K. V. Sokolovsky, P. A. Voitsik, J. A. Zensus
2021, ...
A transition from parabolic to conical shape as a common effect in nearby AGN jets
Y. Y. Kovalev, A. B. Pushkarev, E. E. Nokhrina, A. V. Plavin, V. S. Beskin, A. V. Chernoglazov, M. L. Lister, T. Savolainen
2020, MNRAS
Inferring the jet parameters of active galactic nuclei using Bayesian analysis of VLBI data with a non-uniform jet model
Ilya Pashchenko, Alexander Plavin
2019, MNRAS
Press Releases
Квазары предпочитают моду семидесятых
2020