Mark Egan

Kavli Institute for Particle Astrophysics and Cosmology

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About

Mark Egan is a leading figure in time-domain astrophysics, specializing in the development of cutting-edge infrared instrumentation for transient discovery. His most significant contribution is as the principal investigator behind the Wide-Field Infrared Transient Explorer (WINTER), a transformative instrument deployed on a dedicated 1-meter robotic telescope at Palomar Observatory. WINTER performs a seeing-limited, high-cadence survey of the infrared sky, uniquely enabling the detection and characterization of elusive transient phenomena, particularly kilonovae—the explosive mergers of neutron stars that produce heavy elements. This work, detailed in his highly cited 2020 paper (39 citations), fills a critical observational gap by probing the dust-obscured universe where optical surveys are blind. Egan’s engineering and scientific leadership have made WINTER a cornerstone of multi-messenger astronomy, directly supporting gravitational wave follow-up campaigns. His achievements exemplify how innovative instrument design drives discovery, bridging the gap between theoretical predictions and real-time cosmic events.