As a wideband, large-field-of-view radio telescope, the Canadian Hydrogen Intensity Mapping Experiment (CHIME) is a revolutionary new telescope designed to provide answers to three major questions in cosmology and astrophysics. They are probing the nature of Dark Energy based on the 21cm intensity mapping technique, detecting large number of Fast Radio Bursts to understand their mysterious origin and pulsar timing to measure the Gravitational Wave Background. In this talk, the speaker will briefly present the CHIME telescope and the work she has done for it.
Her work mainly consists of three parts: the design of the wideband, dual-polarized antenna array; the simulation and calibration of the CHIME beam; the wideband mapping of the north celestial cap. The north celestial cap mapping is a pathfinder to map the whole northern hemisphere to help remove the strong galactic foreground contamination for CHIME’s Dark Energy probing. It will also provide critical data for galactic science, such as the galaxy’s wideband spectrum and the galactic magnetic field distribution.
BIO
Meiling Deng, Postdoctoral Fellow of Perimeter Institute for Theoretical Physics. She gained her PhD degree in physics and Master degree in astronomy from the University of British Columbia. Bachelor degree is in applied physics from the Huazhong University of Science and Technology. Her main research field is experimental cosmology. Her current research interests are 21cm intensity mapping, Fast Radio Bursts, radio galaxy survey and radio instrumentation.
Host: Shude Mao
