Robert Musioł (Institute of Chemistry, Uniwersytet Śl)
Why do we fall in love, and why with this particular person? What happens in our brain when attraction turns into desire, love and attachment? In this lecture, we will look at love through the eyes of biology, chemistry and evolution — from dopamine and oxytocin to sex, fidelity and some rather embarrassing questions about the human body. We will separate scientific facts from popular myths, without taking the fun out of either. And in the end, we will ask the most important question: if love is really chemistry, does knowing the formula make it any less magical?
Rameshan Thimmappa (Department of Physics, Villanova University)
Relativistic jets in radio galaxies provide unique laboratories for investigating particle acceleration and shock physics. Here, I present high-resolution X-ray and optical studies of two nearby radio galaxies, Pictor A and M87. In Pictor A, using Chandra observations, the western hotspot was resolved into a thin shock-front structure, revealing energy-dependent offsets between the X-ray/optical and radio emission. The hotspot also exhibits long-term flux variability and spectral steepening downstream of the shock. In addition, an X-ray filament has been detected in the eastern lobe of Pictor A. For M87, multi-epoch Chandra and Hubble observations of knot HST-1 in the jet reveal a correlation between flux and positional offset during its flare around 2005, along with substantial long-term flux variability and apparent superluminal motion. These observations further suggest that the X-ray and UV/optical emission may originate from physically distinct regions. Together, these studies demonstrate how spatially resolved imaging and multi-epoch variability analyses can probe the internal structure, dynamics, and high-energy synchrotron emission of relativistic jets in active galactic nuclei.
