For a brief list of publications, see my ORCID or search in ADS.

Research projects

Inhomogeneous recombination relieving Hubble tension

(Prof. Daniel Eistenstein, Dr. Julian Munoz, Prof. Cora Dvorkin)

Goal: investigate the idea of relieving the Hubble tension with primordial magnetic fields, generalize and make forecasts

Tools: MCMC/nested sampling with Cobaya using CLASS Boltzmann code

Open source: modified CLASS with clumping models.

The dynamics of highly magnetized jets propagating in the medium

(Dr. Omer Bromberg, Prof. Alexander Tchekhovskoy)

Goal: study their launching, propagation, instabilities, energy dissipation

Tools: GRMHD simulations in H-AMR code (improved version of HARM and harmpi)

My contribution: implementing the rotating perfect conductor BC, matter injection, grid modifications, tilting the jet to avoid pole singularity issues

Open source: harmpi with the neutron star boundary condition.

Pulsar losses mechanisms

(Prof. Vasily Beskin, Dr. Alexander Philippov)

Goal: understanding the reason of discrepancy between numerical simulations and theoretical considerations - the first give that total energy loss rate increases with inclination angle (between magnetic dipole and rotation axis), while the second gave the opposite trend

Key results: additional separatrix currents are important factor of radiopulsar losses reproduced in simulations; most of the energy starts flowing along open magnetic field lines already within the light cylinder; losses in numerical simulations are not dipolar

My contribution: analysis of electromagnetic field configuration in a force-free simulation snapshot; a method to separate polar cap from closed field lines region

Publication: Beskin, V. S., A. K. Galishnikova, E. M. Novoselov, A. A. Philippov, and M. M. Rashkovetskyi, 2017. So how do radio pulsars slow-down?. Journal of Physics Conference Series 932, 012012.

Orthogonal radiopulsars and their statistics

(Prof. Vasily Beskin, Egor Novoselov, Alisa Galishnikova, Dr. Anton Biryukov)

Goal: test two key models of radiopulsar period and inclination angle evolution (one theoretical by Beskin, Gurevich and Istomin (BGI) with one based on MHD and force-free simulations by Spitkovsky, Tchekhovskoy, Philippov and others) by predicting seen orthogonal pulsar numbers and comparing them to observed ones

My contribution: sampling pulsar distribution functions with Monte-Carlo simulation, making predictions based on it

Publication: Novoselov, E. M., V. S. Beskin, A. K. Galishnikova, M. M. Rashkovetskyi, and A. V. Biryukov, 2020. Orthogonal pulsars as a key test for pulsar evolution. Monthly Notices of the Royal Astronomical Society 494, 3899-3911.

Open source: pulsar distribution sampling code.

Pulsar radiation propagation

(Prof. Vasily Beskin, Dr. Alexander Philippov)

Goal: understand the morphology of pulsar light-curves; find observational evidence of separatrix currents

Method: ray-tracing and integrating the polarization parameters according to Kravtsov-Orlov equation

Publications:


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