Fakultät für Physik und Astronomie

A Tapestry of Starlight and Supermassive Black Holes

Alyssa Drake , Hertfordshire

As new astronomical facilities come online, they offer the opportunity to transform our understanding of the Universe. One such facility is The International LOFAR Telescope, which is opening new parameter space in the low-frequency radio sky through its unprecedented combination of sensitivity, areal coverage and spatial resolution. In particular, the LOFAR Two Metre Sky Survey (LoTSS) is surveying the entire northern sky at 150MHz to a depth of ~100 micro Jy, already providing a sample of > 4 million extragalactic radio sources, and gathering statistical samples of both extreme quasars in the early Universe, and 'typical' star-forming galaxies across vast swathes of cosmic time. I will outline our current understanding of the build up of the first supermassive black holes, and the evolution of cosmic star formation, using state-of-the art facilities (e.g. MUSE and ALMA), before discussing how the advent of massively-multiplexed spectroscopic facilities such as WEAVE will unlock the immense potential of the LOFAR surveys. For instance, by providing > 1 million optical spectra of radio-selected sources, the WEAVE-LOFAR survey will be able to distinguish between star-formation and AGN, accretion modes in AGN, and ultimately enable us to understand the complex interplay between star formation and accretion from z~7 to the present day.

Königstuhl Colloquium
30 Sep 2022, 11:00
MPIA lecture hall

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Prof. Philipp Huke (Hochschule Emden/Leer)
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