The Linear Point standard ruler for galaxy survey data: Reconstruction

فرنیک نیک اختر

Farnik Nikakhtar

Department of Physics and Astronomy University of Pennsylvania

**لطفا  به ساعت نامتعارف سمینار توجه فرمایید**

 Abstract: The baryon acoustic oscillation feature can be used as a standard cosmological ruler. In practice, for sub-percent level accuracy on the distance scale, it must be standardized. The physical reason why is understood, so we use this to develop an algorithm that improves the estimated scale. Tests of the method in numerical simulations show that it delivers the sub percent precision that is needed if future datasets are to deliver unbiased constraints from observations of tracers whose bias may be scale-dependent. Our algorithm provides a simple and fast reconstruction of the full shape of the BAO feature, as well as sub percent precision reconstruction of the linear point in the correlation function of biased tracers.

 

یکشنبه 1 تیر 1399، ساعت 17:00

Sunday 21 June, 2020 – 17:00 Tehran Time

  اتاق سمینار مجازی –Virtual Seminar Room

https://vclass.ecourse.sharif.edu/ch/cosmology

گزینه ورود به صورت مهمان – Enter as a Guest