Prompt

Generate a realistic image of a middle-aged Swedish physicist, Per Olof Hulth, in a professional setting, possibly in front of a blackboard with equations related to astroparticle physics or neutrinos, or near a scientific instrument. He should be dressed in attire suitable for a university professor or researcher, such as a blazer and glasses. The background should hint at his affiliation with Stockholm University or his work with the AMANDA experiment or the IceCube Neutrino Observatory. The style should be formal and professional, capturing the essence of a renowned physicist.