21cm LEDA: The Detection of Cosmic Dawn using the Owen's Valley LWA.
by Hugh Garsden (CfA Harvard)
Abstract.
The LEDA Project is being conducted at the Harvard-Smithsonian Centre for Astrophysics, using an LWA-like telescope at Owens Valley in California. Its intention is to measure the 21cm HI signal at high redshift, thus providing information about the early development of the Universe. I will give an overview of 21 cosmology, the telescope being used, and discuss the status of the project. This will include some recent results on measuring the global 21cm signal, and new work beginning on measurements of 21cm power spectrum. I will mention some of the issues that we face in obtaining the desired measurements and some technical aspects of the telescope hardware and software that support the project.
