Piyanat "Boom" Kittiwisit (ASU): Measuring 21 cm One-point Statistics with HERA

Seminar | July 10 | 3:10-4 p.m. | 501B Campbell Hall

 Piyanat "Boom" Kittiwisit, Arizona State University

 Radio Astronomy Lab

Ongoing efforts to constrain the Epoch of Reionization have put severals upper limits on the redshifted 21 cm power spectrum along with robust characterization of its systematics. These preliminary results also led to a construction of the Hydrogen Epoch of Reionization Array (HERA). The much improved sensitivity of HERA will enable study of 21 cm statistics beyond the power spectrum. In this talk, I will discuss the prospects of measuring one-point statistics (variance, skewness, and kurtosis) of redshifted 21 cm intensity fluctuations with HERA. Apart from providing independent confirmation of the reionization history, this particular set of statistics directly probes non-Gaussianity of the signal, which can potentially be used to infer about the underlying topology of the fluctuations.

 scroft@berkeley.edu