ELFT HÍRADÓ

[vidakris AT konkoly.hu]

Szemináriumi meghívó / Invitation to a seminar
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CSFK CSI SZEMINÁRIUM / KONKOLY OBSERVATORY SEMINAR

Date: May 22 (Thursday) 14:00


Viktória Fröhlich (Konkoly Observatory and ELTE; Hungary):
Dynamical effects of type II supernovae

More than five thousand exoplanets are now known, mostly around main-sequence 
stars. Interestingly, however, three of the planets in the first exoplanetary 
system discovered orbit a pulsar (PSR B1257+12). Since pulsars are formed 
during Type II supernova explosions, the original planetary system may become 
dynamically unstable. The probability of planetary capture is low, and the 
capture of three planets is nearly impossible. In addition, researchers have 
discovered hundreds of planets that do not orbit a star, but orbit around the 
centre of mass of the Galaxy as rogue planets. 
In recent years, our research has focused on modelling the dynamical effects 
of SNe II explosions in different systems. We implemented a homologous 
expansion model to describe the mass loss of SNe, combined with a 
high-precision numerical N-body integrator with variable central mass. We 
calculated the perturbations in the orbital elements of the companions and 
studied the fate of the systems. The configurations studied included 
exoplanets with and without moons, and binary star systems with and without 
an exoplanet. Analysis and interpretation of the data showed that Type II SNe 
are a highly effective channel for the formation of binary neutron stars, 
high peculiar velocity stars and rogue planets, as well as high eccentricity 
tidally heated exomoons around such rogue planets.


https://konkoly.hu/k-szeminariumok

The seminar will be held live in the Detre hall with audience, but also 
streamed online via Zoom. If you are unable to attend the presentation in 
person, you can join us via this link
https://us06web.zoom.us/j/82806911982?pwd=SVZpT0syQ1J6dHBvSkF4N2dXNEQ0dz09
or the meeting ID: 828 0691 1982 and passcode: 206265



Everyone is welcome!

Krisztián Vida, Ramon Brasser
organizers
https://konkoly.hu/k-szeminariumok