Wykłady odbywają się w okresie od października do czerwca, raz w miesącu, w poniedziałki o godzinie 18:00.
Black holes are among the most enigmatic objects in the Universe, and their mergers are some of the most energetic events ever observed. With the advent of gravitational wave astronomy, we now have a new window into these cosmic collisions. This talk explores how star clusters—dense environments where stars are born and interact—serve as natural factories for producing merging black holes. We begin with an introduction to black holes, gravitational waves, and the groundbreaking discoveries made by the LIGO-Virgo-KAGRA collaboration through ground-based gravitational wave detectors. Then, we delve into the physics of star clusters, discussing how dynamical interactions in these dense and crowded environments lead to black hole binaries that eventually merge due to gravitational wave emission. Through computer simulations, we explore how these binaries form and evolve, shedding light on the origin of some of the black hole mergers detected by gravitational wave observatories.By understanding the role of star clusters, we can better interpret current observations and prepare for future discoveries with planned space-based gravitational wave detectors like LISA.
Wykład w języku angielskim.
Alex Markowitz (CAMK, Warszawa)
T Corona Borealis (T CrB) is a red giant/white dwarf binary system that undergoes massive outbursts once every 80 years, and the next eruption is imminent. The system will rapidly increase in brightness by a factor of over 1000, become visible to the unaided eye, and it will be the brightest nova outburst observed since Nova 1500 Cyg in 1975 -- but peak brightness will only last several days. I will review the mechanics of mass transfer and ignition in recurrent nova eruptions, what we know about T CrB's activity and previous eruptions, as well as how to locate and view T CrB in the sky.
Wykład w języku angielskim.
Lecture will be given in English.
Transmisja w 
