ECCE - 2027

Characterization of the Seismic Field in the Virgo Buildings

The detection of gravitational waves has opened up a new era in astronomy, providing unprecedented insights into some of the most extreme and dynamic events in the universe. However, gravitational wave (GW) detectors are extremely sensitive instruments that are susceptible to a wide range of environmental disturbances, including seismic activity. Therefore, it is essential to understand the behavior of seismic waves in the vicinity of these detectors in order to design and operate them effectively. An essential aspect of the advanced Virgo interferometer is to precisely evaluate the seismic conditions surrounding the gravitational wave detector anticomplement the effects of the neighboring seismic fields on its performance. The analysis of the seismic data collected from Virgo GW detector premises can provide crucial insights into the subsurface structure's behavior. The purpose of this paper is to present a systematic analysis of the seismic data obtained from the three structures of the Virgo observatory, namely the Central End Building (CEB), North End Building (NEB), and West End Building (WEB). By analyzing the spatial spectra of the seismic field, we identify the presence of two dominant modes of wave intergrow buildings, which exhibit complex and dynamic behavior. Our comprehensive analysis of seismic data from the Virgo observatory provides new and important insights into the behavior of seismic activity in this region and its implications for gravitational wave detection. Our findings have important implications for the design and operation of future GW detectors, and our call for further research and collaboration will help in progressing towards a safer and more resilient GW detection infrastructure.

Professor Sk Shariful Alam, a distinguished scholar and academic, serves as the Pro- Vice Chancellor of Khulna University of Engineering & Technology (KUET) and is a Professor in its Department of Electronics and Communication Engineering (ECE). He holds a B.Sc. in Electrical and Electronic Engineering (EEE) from Chittagong University of Engineering and Technology (CUET) (2003), an M.Sc. in Telecommunication Engineering from the University of Trento, Italy (2010), and a PhD. in Wireless Communications from the University of Genoa, Italy (2014). Healso completed postdoctoral research at the Nicholous Copernicus Astronomical Center (CAMK), Polish Academy of Sciences (PAN), Warsaw, Poland (2020-2023). Since joining KUET in 2004, Professor Alam has been deeply committed to academic excellence, research, and institutional development. As Pro-Vice Chancellor, he is dedicated to fostering a vibrant and inclusive learning environment, ensuring high- quality education, and strengthening KUET's standing as a leading center for engineering education and research, both nationally and internationally.