Andrej Čadež: Interaction of a pulsar with the surrounding nebula: The case of Crab

New channel Institute of Physics in Opava: title sample judged 'pick' (Mostly genuine research seminars and technical astrophysics lectures (RAGtime workshops, X-ray data processing tutorials); passed a second screen for sellers/exam-prep/re-uploads; 2 of 3 sampled transcripts showed teaching, 0 not; titles picked one by one, checked strictly; oEmbed verified.