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

Summer Student Lunch Discussion #3

Date: May 28, 2019 12:30 PM
Location: Rutherford Boardroom (room 104)
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Neutron Star Discussion

Date: May 30, 2019 3:30 PM
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Astro Ph

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Hamsa Padmanabhan (CITA)

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Summer Student Lunch Discussion #2

Date: May 21, 2019 12:30 PM
Location: Bell Room (room 103), Rutherford Physics
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Natalya Gomez (McGill University (EPS/MSI))

Date: May 16, 2019 7:00 PM
Location: Frank Dawson Adams Auditorium (3450 University St.)
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Summer Student Lunch Discussion #1

Date: May 14, 2019 12:30 PM
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Special MSI Seminar - "FRBs and Radio Signatures of Gravitational Wave Merger Events"

Kelly Gourdji (University of Amsterdam)

Date: May 10, 2019 12:00 PM
Location: MSI Conference Room (3550 University)
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Special Public Talk - "The Event Horizon Telescope: Seeing the Unseeable"

Shep Doeleman (Harvard Center for Astrophysics & Event Horizon Telescope Collaboration)

Date: May 1, 2019 6:15 PM
Location: Leacock 132
Public Lecture
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