Abstract

Recently, the cubic Galileon gravity (CGG) model has been suggested as an alternative gravity theory to general relativity. The model consists of an extra field potential term that can serve as the “fifth force”. In this seminar, I will present the result of testing the CGG model by rotation curve data. The CGG model can satisfactorily explain the shapes of rotation curves without dark matter. It can be regarded as a new alternative theory to challenge the existing dark matter paradigm.

About the Speaker

Dr. Chan, Man Ho graduated from the Chinese University of Hong Kong (CUHK) in 2002. Later, he obtained his Master degree in Physics, Doctoral degree in Physics, Master of Arts in Christian Studies, and Postgraduate Diploma in Physics Education in 2004, 2009, 2010 and 2012 respectively from the same university. He also finished his second Doctoral degree in Philosophy at Hong Kong Baptist University in 2017. He is now an Assistant Professor of Department of Science and Environmental Studies at EdUHK. His research interests include Astrophysics, Philosophy of Science and dialogue between Science and Religion.

Acknowledgement: EdUHK FLASS Dean’s Research Fund Research Output Prize