G. Sironi

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About

Giorgio Sironi is a leading figure in the development of advanced X-ray optics for next-generation space telescopes. His primary research focuses on the fabrication and integration of lightweight, segmented mirrors—particularly using slumped borosilicate glass—to achieve the large effective areas and high angular resolution required for future X-ray observatories. Sironi’s major contribution lies in pioneering the use of interfacing ribs to accurately align and integrate thin glass segments, a critical innovation for overcoming the structural challenges of long-focal-length telescopes. His most cited work, “Accurate integration of segmented x-ray optics using interfacing ribs” (2013, 21 citations), demonstrates how this technique can deliver a 5 arc second half-energy width (HEW) while maintaining a lightweight, cost-effective design. This approach has positioned him as a key contributor to the development of affordable, high-performance X-ray mirrors, with his methods informing the design of missions like ATHENA. Sironi’s work bridges the gap between precision engineering and astrophysical discovery, enabling telescopes that can probe the hot, energetic universe with unprecedented clarity.