On April 1, 2022, Anders Lindanger successfully defended his PhD thesis entitled “Spectral Analysis of Terrestrial Gamma-ray Flashes and Their Connection to Lightning Discharges“. In the picture below we see the 2nd opponent, Professor Sebastien Celestin from the University of Orleans, through a video link, with Anders Lindanger next to the podium in the large auditorium at Høyteknologisenteret.
When asked to provide a short summary of his thesis, Lindanger explains: “Terrestrial Gamma-ray Flashes (TGFs) are bursts of energetic gamma-rays from thunderstorms. By analyzing the lightning activity around the production time of TGFs we have found that a TGF occur in the beginning of a lightning flash. Further, we have shown that the TGF also affects the electrical activity several hundreds of milliseconds after the TGF. Using the ASIM instrument we have performed spectral analysis of TGFs measured by ASIM. The results found put constraints and recommendations for future space- and ground instruments for TGF detection”.
The new PhD admits that it was an emotional day: “I was nervous, however, we had a good scientific discussion after my presentation”. About future plans, Lindanger says (with a smile on his face): “I am getting married! Also, I will soon start in a new job in NORCE as a researcher”. First though, this Friday April 1, it was time for the traditional PhD dinner to celebrate the new PhD. Well deserved!