Astro Seminar - Mapping Matter in Strong Gravity: Spectral-Timing of Black Holes and Neutron Stars

Abigail Stevens (Michigan State University & University of Michigan)

Date: Dec 11, 2018 3:30 PM
Location: Bell Room, Rutherford Physics
Astro Seminar

Title: Mapping Matter in Strong Gravity: Spectral-Timing of Black Holes and Neutron Stars

Abstract: One of the best laboratories to study strong-field gravity is the inner 100s of kilometers around black holes and neutron stars in binary systems with low-mass stars like our Sun. The light curves of low-mass X-ray binaries show variability on timescales from milliseconds to months — the shorter (sub-second) variability is particularly interesting because it probes the inner region of the accretion disk and compact object. My research looks at X-ray quasi-periodic oscillations (QPOs) from black holes and neutron stars (as well as coherent X-ray pulsations from neutron stars) by fitting the phase-resolved energy spectra of these signals to constrain their physical origin and track their evolution in time. In this talk, I will present state-of-the-art “spectral-timing” analysis of QPOs from different classes of sources and different accretion states, and I will discuss how this sets the stage for future research.




Upcoming Events

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Date: Feb 19, 2019 2:00 PM
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Date: Feb 19, 2019 3:30 PM
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Date: Feb 20, 2019 9:30 AM
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Date: Feb 21, 2019 3:30 PM
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Public AstroNight - "Searching for Cosmic Dawn"

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Date: Feb 21, 2019 7:00 PM
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Date: Feb 22, 2019 10:30 AM
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Date: Feb 25, 2019 12:00 PM
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Date: Feb 11, 2019 12:00 PM
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