Today:
There are no scheduled talks today.
Upcoming:
Euler Characteristics and Anomaly Cancellation
Monica Jinwoo Kang
Mon, 23 Apr 2018, 14:00
Gravity matters: from gravitational waves to dark matter
Prof. Xavier Calmet
Mon, 23 Apr 2018, 16:30
Precision in EFT studies for top quark and Higgs physics
Eleni Vryonidou
Tue, 24 Apr 2018, 14:15

Decoding the Sound of the Universe

Frank Ohme , AEI
Abstract: Gravitational waves are oscillations in spacetime, caused by violent cosmic events, that travel almost unobstructedly through the Universe, carrying information about their origin that complement other types of astronomical observations. When the Advanced Laser Interferometer Gravitational-wave Observatory (LIGO) started to operate in 2015, we finally became sensitive to this "soundtrack" of the Universe. Since then, multiple binary black mergers have been observed that would otherwise be entirely invisible. In addition, August 2017 marked the beginning of the era of multi-messenger astronomy, when a neutron-star merger was "heard" through gravitational waves as well as "seen" in the electromagenetic spectrum.

In my talk, I will illustrate how minuscule oscillations in giant laser interferometers can be traced back to their astrophysical origins with the help of supercomputers. I will give an overview of current observations and show what we can learn from gravitational-wave measurements, and how this information can be combined with other data to learn about compact objects and the Universe as a whole.
Königstuhl Colloquium
9 Feb 2018, 15:00
Max-Planck-Institut für Astronomie, Level 3 Lecture Hall (301)

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