Helmut Wiesemeyer

Helmut Wiesemeyer is a Scientific Staff member and Astronomer at the Max Planck Institute for Radio Astronomy (MPIfR) in Bonn, Germany, affiliated with the Research Department Millimeter and Submillimeter Astronomy and Submillimeter Technology group. He has held this position since 2010 and also serves as a SOFIA scientist. Previously, he was a visiting scientist at IRAM Granada (2006–2010) and a permanent scientist/postdoc at IRAM Grenoble (1997–2005). He holds a Dr. rer. nat. in Astronomy from the University of Bonn (1997) and a Physics degree from the University of Würzburg (1994).

Research Interests: Dr. Wiesemeyer specializes in spectroscopy and polarimetry of cosmic phenomena. His work spans:

• Chemistry of the early universe and interstellar/circumstellar matter
• Planetary atmospheres (Venus, Jupiter) and cometary comas
• Far-infrared spectroscopy of light hydrides
• Radiation transport models for atomic excitation studies
• Dust polarimetry in star-forming regions and late-stage stellar evolution

Publications: With over 200 publications, his recent work (2023–2025) focuses on spectroscopic analyses of planetary atmospheres (Venus/Jupiter), evolved stars, and interstellar chemistry. Key themes include atomic oxygen detection, deuterium fractionation, maser polarization, and dust dynamics, utilizing facilities like SOFIA and ALMA.

Technical Contributions: He develops heterodyne receivers, terahertz technology, and data processing methods for submillimeter astronomy.

Contact: MPIfR Bonn, Auf dem Hügel 69, 53121 Bonn. Phone: +49 (0)228-525-346.