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Mitchell Begelman. Image credit: Glenn Asakawa, 2020.

JILA Fellow and the Department of Astrophysical and Planetary Sciences (APS) at the �Թ��� of Colorado Boulder Distinguished Professor Mitch Begelman as a 2025 American Astronomical Society (AAS) Fellow. Joining Professor Begelman in this recognition are APS Professors James Green and J. Michael Shull, now an Adjunct Professor of Physics and Astronomy at the �Թ��� of North Carolina, Chapel Hill. Together, their contributions underscore CU Boulder’s leadership in astrophysics and planetary sciences.

Professor Begelman was honored for his pioneering analytical and computational studies of high-energy astrophysical phenomena, including developing the “quasi-star theory” explaining the formation of supermassive black holes. His dedication to public engagement has further enriched the public’s understanding of black holes through two acclaimed books.

“I am deeply honored to be recognized by the AAS and to share this distinction with my esteemed colleagues,” said Begelman. “This recognition reflects the collaborative spirit of research at CU Boulder and JILA, where groundbreaking ideas flourish.”

Green was commended for his exceptional contributions to ultraviolet space astronomy and his role in advancing spectrograph designs that have enabled groundbreaking discoveries.��
Meanwhile, Shull was recognized for his theoretical modeling and observational studies that have provided transformative insights into intergalactic and interstellar gas.

“It’s wonderful to see that CU Boulder’s APS department had three of the 24 AAS Fellows awarded this year,” Shull stated.

These accolades reflect the tireless dedication of all three researchers to advancing astrophysics and mentoring the next generation of scientists.

CU Boulder and JILA celebrate this recognition of Professors Begelman, Green, and Shull, whose achievements continue to inspire and elevate the global astronomy community.

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