Software
Physical models I develop and maintain with collaborators for interpreting the X-ray, UV, and optical emission of accreting supermassive black holes. All are part of the KYN suite of relativistic models for XSPEC.
KYNSED
Broadband SED of X-ray illuminated accretion disks
KYNSED models the full optical-to-X-ray light from an accretion disk that is being illuminated by the corona above it. It treats the disk and corona as one connected system, so the energy they exchange is balanced rather than assumed, and it can be fit directly to the multi-wavelength spectrum of a real AGN. It runs as a model within XSPEC.
How to cite
Dovčiak, Papadakis, Kammoun & Zhang (2022), A&A, 661, A135.
KYNxiltr
UV/optical time-lag spectra from disk reverberation
KYNxiltr predicts how an accretion disk responds when the corona's X-rays heat it, and turns that into the wavelength-dependent time delays we measure in reverberation campaigns. It includes the full effects of the black hole's gravity and the disk's ionization, and comes with an analytic prescription that can be fit straight to observed lag spectra. It also runs within XSPEC.
How to cite
Kammoun, Dovčiak, Papadakis et al. (2021), ApJ, 907, 20; and Kammoun, Robin, Papadakis et al. (2023), MNRAS, 526, 138.
Aborted jets
Coming soon
A model for the X-ray signatures of aborted jets in AGN, where material is launched from near the black hole but falls back rather than escaping. In development, details and code to follow.
How to cite
In preparation.