Sonja Ashauer

Sonja Ashauer (9 April 1923 – 21 August 1948) was a Brazilian physicist. She was the first Brazilian woman to earn a doctorate in physics, and the second to become a physics graduate in Brazil.

Biography Born in São Paulo, Ashauer was the daughter of the German-born engineer Walter Ashauer and his wife Herta Graffenbenger who had emigrated to Brazil. From 1935 to 1939, she pursued her secondary education at Gymnasium of São Paulo state capital. She was said to have been a brilliant student. Her thesis (Problems in electrons and electromagnetic radiation) explored the cutting-edge field of quantum electrodynamics. In this research, Ashauer focused on solving the problem that when the electron was modeled as a point source, its self-energy tended to infinity. In March 1948, she returned to Brazil, where she was appointed as Wataghin's assistant.

Ashauer was the first woman from Brazil elected as a member of the Cambridge Philosophical Society.

Later that year, after catching a cold on a rainy day, she contracted pneumonia. She was taken to hospital, but she died six days later on 21 August 1948. The cause of death stated on the death certificate was "broncopneumonia, myocarditis, and heart failure".

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