Friday, October 14, 2016
2:00 pm

TAPIR Seminar

Relativistic effects on LSS: power spectrum and bispectrum
Enea Di Dio, Postdoctoral Fellow, INAF-OATS (Trieste Observatory)

I will discuss the Large Scale Structure power spectrum and bispectrum in a relativistic framework. To first order, a relativistic description includes terms beyond the Kaiser approximation (Doppler effects and galaxy evolution), gravitational potentials and integrated terms (cosmic magnification, integrated Sachs-Wolfe and Shapiro time-delay). I will show how they can be isolated by correlating different probes, or by using the so-called multi-tracer technique. Through this technique future surveys may be able to detect some relativistic contributions.
I will also discuss relativistic effects beyond linear theory, the relativistic bispectrum and how the lensing deflection angle smears out the BAO wiggles.

Contact Sheri Stoll sstoll@caltech.edu at 626-395-6608
For more information see TAPIR at Caltech
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