SRON appoints Holley-Bockelmann to lead LISA data modeling

On Nov. 8, 2026, SRON said Kelly Holley-Bockelmann joined its Leiden institute to direct studies of multi-messenger astrophysics and data modeling for LISA. She chairs NASA’s LISA Study Team and previously chaired its Astrophysics Advisory Committee, experience she brings to guiding data analysis for the ESA-led observatory.

Her computational frameworks turn complicated laser interference patterns from multiple satellites into information astronomers can use.

LISA is an ESA-led gravitational wave observatory built with NASA partnership and will be the first space-based effort to detect such waves. The observatory will cover frequencies from 0.1 mHz (millihertz) to 1 Hz, with targets including Milky Way binaries, massive black-hole mergers, and cosmic expansion. The report from the mission’s definition phase summarizes completed work and portrays LISA as a sky survey for gravitational waves covering a vast range of cosmic objects.

Launch is set for 2035 on an Ariane 6 rocket from Kourou, French Guiana, with a 4.5-year science campaign planned after liftoff. The three spacecraft will maintain an equilateral triangle formation, with each arm stretching 2.5 million kilometers. Continuous infrared beams will track path-length changes at picometer-scale precision. The mission represents a joint venture between the American and European space agencies.

Two optical benches on each spacecraft connect to six ultra-stable Zerodur telescopes from Thales Alenia Space. These instruments transmit and collect 1,064-nanometer laser light across deep space for interferometry, supporting the mission’s measurement system between the widely separated spacecraft. Gold-and-platinum test masses will float freely inside gravitational reference sensors, while Teledyne Space Imaging’s Constellation Acquisition Sensor maintains inter-satellite optical alignment at sub-micro-arcsecond precision.

These systems preserve the precise inertial sensing and pointing needed for laser interferometry across the full constellation. Ground instruments like LIGO detect high-frequency ripples from collisions involving stellar-mass black holes, but seismic noise blocks lower frequencies on Earth. LISA will operate an orbital interferometer in deep space to capture millihertz signals, because seismic noise blinds ground detectors to low frequencies.

Its targets will include mergers of supermassive black holes, extreme mass-ratio inspirals, and fluctuations from the early cosmos. By launching in 2035, the mission will produce information that complements electromagnetic observations and reaches electromagnetically dark regimes.

In 2017, NASA named her chair of the LISA Study Team for the joint NASA-ESA mission. She assumed leadership of the Astrophysics Advisory Committee in October 2022. According to NASA’s biography, she holds the Stevenson Professor of Physics title at Vanderbilt University. The NASA page, published in 2023, describes her as chair of NASA’s LISA Study Team and chair of NASA’s Astrophysics Advisory Committee.

She directs the Fisk-Vanderbilt Bridge Program and has worked to increase diversity in STEM education. She has mentored students through the program since 2007 and served as co-director starting in 2015.

Her doctorate in astronomy came from the University of Michigan in 1999, after she completed a master’s degree there. Montana State University awarded her an undergraduate physics degree in 1993. Postdoctoral work took her to Case Western Reserve University, the University of Massachusetts Amherst, and the Center of Gravitational Wave Physics at Pennsylvania State University, studying simulations of galaxies, black holes, and gravitational-wave science.

As the Dutch national space research institute, SRON coordinates astrophysics and Earth science research from space. European efforts are expanding work on LISA science exploitation after mission adoption, with growth in instrumentation, simulations, data analysis and multi-messenger astrophysics. Mission adoption signals a move toward preparations for scientific use of the observatory. Leiden will host the LISA-NL Community Day 2026 as the institute works to strengthen the Dutch LISA community following adoption.

Discussion at the event will cover instrumentation, data analysis, modeling, simulations, and links to electromagnetic astronomy. Updates on Dutch hardware and science will be part of the program, along with discussion sessions designed to encourage new collaborations and community engagement. Following adoption by ESA, OHB SE leads the prime industrial contracts while teams test flight hardware through optical testbeds and hardware-in-the-loop simulators.