Current Program

Advances in Theoretical Cosmology in Light of Data

Advances in Theoretical Cosmology in Light of Data


3—28 Jul 2017

What is the expansion history of the Universe? What are dark energy and dark matter? Is Einstein’s theory of gravity valid on cosmological scales? What generated the initial perturbations that grew

Future Programs »


A new approach to the detection of exoplanets

Sahil Agarwal, Fabio Del Sordo, and John Wettlaufer

The detection of Earth-like exoplanets is challenging because several sources of noise hinder from uncovering the imprint of a low-mass planet in observations.

We have implemented a method, called MultiFractal Temporally Weighted Detrended Fluctuation Analysis, to detect planets orbiting a distant star. This makes no use of any fitting procedure to filter out the noise, but instead characterizes it by looking at the fluctuations of the data at different wavelengths. In particular, this approach allows to measure the time scales over which stellar noise operates, thus opening a new door to interpret the data that will come from the next generation of spectrographs.

Original paper: Exoplanetary Detection by Multifractal Spectral Analysis

Upcoming Seminars

Friday 28 July, 2017
No events in theoretical physics scheduled for today.

Taken from the AlbaNova Agenda

See also list of all regular theory seminars at AlbaNova

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26 Jul 2017