Astronomy Colloquium

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Ast1142 - Black Holes
February 21, 2019
4:00PM - 5:00PM
Location
1005 Smith Lab

Date Range
Add to Calendar 2019-02-21 16:00:00 2019-02-21 17:00:00 Astronomy Colloquium

X-ray Reverberation in Accreting Black Holes

Erin Kara - University of Maryland

Accreting supermassive black holes can produce more electromagnetic and kinetic luminosities than the combined stellar luminosity of an entire galaxy. Most of the power output from an Active Galactic Nucleus is released close to the black hole, and therefore studying the inner accretion flow is essential for understanding how black holes grow and how they affect their surrounding environments. In this talk, I will present a new way of probing these environments, through X-ray reverberation mapping, which allows us to map the gas falling on to black holes on microparsec scales and measure the effects of strongly curved space-time close to the event horizon. I will give an overview of the field and present new results on a remarkably bright stellar mass black hole transient observed with the NICER observatory on board the International Space Station.

1005 Smith Lab Department of Astronomy astronomy@osu.edu America/New_York public
Description

X-ray Reverberation in Accreting Black Holes

Erin Kara - University of Maryland

Accreting supermassive black holes can produce more electromagnetic and kinetic luminosities than the combined stellar luminosity of an entire galaxy. Most of the power output from an Active Galactic Nucleus is released close to the black hole, and therefore studying the inner accretion flow is essential for understanding how black holes grow and how they affect their surrounding environments. In this talk, I will present a new way of probing these environments, through X-ray reverberation mapping, which allows us to map the gas falling on to black holes on microparsec scales and measure the effects of strongly curved space-time close to the event horizon. I will give an overview of the field and present new results on a remarkably bright stellar mass black hole transient observed with the NICER observatory on board the International Space Station.