Using Gravitational Telescopes to Detect the Faintest Galaxies in the Universe
Brian Siana
UCR Physics & Astronomy
From: 11:00 AM To: 12:00 PM
Thursday, Sep 25, 2014
Burns Lecture Hall, Keck Science Center
Astronomers have recently been able to detect incredibly distant galaxies, allowing them to glimpse how the universe appeared 12-13 billion years in the past. However, they're only detecting the bright tip of the iceberg, as most of the galaxies in the early universe are extremely small and far too faint to detect with our current telescopes. It is critical for our understanding of galaxy formation to detect these numerous, small galaxies. Fortunately, massive objects, such as clusters of nearby galaxies, can actually bend light and act as giant magnifying glasses, making all of the galaxies behind them much brighter. I will describe this phenomenon, known as gravitational lensing", and show how astronomers are using it to detect the faint galaxies in the early universe.
Seminar Registered by: Velda Yount


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