Embedded Files
Below, you'll find my writing organised by publication type and year. For questions on any specific publication, feel free to message my office, and a teaching staff member will respond as soon as possible.
Below, you'll find my writing organised by publication type and year. For questions on any specific publication, feel free to message my office, and a teaching staff member will respond as soon as possible.
Illustration by NASA/Swift/Aurore Simonnet, Sonoma State Univ
Black Hole Astrophysics: probing extreme gravity with black hole X-ray echoes
Black Hole Astrophysics: probing extreme gravity with black hole X-ray echoes
The inner 30 light-minute radii of accreting supermassive black holes are revealed mostly in UV and X-rays. Among the few fascinating events we observe using UV/X-ray satellites, X-ray reverberation is one where X-ray flashes occur in a region as close as ten light-minutes away from the supermassive black hole and are reflected in the accretion disc before reaching the observer. However, such an echoed light is delayed due to the bending caused by the extreme gravity of the black hole.
Due to a dramatic breakthrough in developing a fully relativistic, time-dependent, ray-tracing disc reflection model, a more realistic quantitative analysis of X-ray reverberation is now possible. In this project, we compute the delay between the direct and reflected light as a function of photon energy, model the X-ray spectrum and use the fitted parameters to perform a simulation that agrees with the observed energy-dependent delay spectra.
In search for transients and binaries from Chandra X-ray surveys
In search for transients and binaries from Chandra X-ray surveys
Page updated
Google Sites
Report abuse