WELCOME! to the web site of Phil Armitage at the University of Colorado in Boulder. My research in theoretical and computational astrophysics focuses on the formation of extrasolar planetary systems and the astrophysics of black holes. Recent work includes predictions for ALMA observations of protoplanetary disks, development of a new model for high energy accretion based on strongly magnetized disks, studies of tidal disruption events, and analytic and simulation studies of planetesimal formation.
As part of JILA's theoretical astrophysics group I share research interests with Mitch Begelman and Ann-Marie Madigan, and work with a group of postdocs and students that currently include Jake Simon, Upasana Das, Vladimir Zhdankin and Dan Gole.
Simulation of accretion disk turbulence, by Jake Simon
Tidal disruption by extreme mass ratio binaries and application to ASASSN-15lh
E.R. Coughlin & P.J. Armitage, MNRAS, submitted
Evidence for universality in the initial planetesimal mass function,
J.B. Simon, P.J. Armitage, A.N. Youdin & R. Li, ApJL, in press
Circumbinary discs from tidal disruption events,
E.R. Coughlin & P.J. Armitage, MNRAS Letters, 471, L115 (2017)
A three-dimensional view of turbulence: Constraints on turbulent motions in the HD 163296 protoplanetary disk using DCO+,
K.M. Flaherty, et al., ApJ, 843, article id. 150 (2017)
Tidal disruption events from supermassive black hole binaries,
E.R. Coughlin, P.J. Armitage, C. Nixon & M.C. Begelman, MNRAS, 465, 3840 (2017)
I did my undergraduate and graduate work at the University of Cambridge,
working with Cathie Clarke at the Institute of Astronomy as my primary advisor. I came to
Boulder, where I'm now a professor in the Department of Astrophysical and Planetary Sciences
and a Fellow of JILA, via postdoctoral stints at CITA and MPA and a period as a Lecturer
at the University of St Andrews.
Beyond work I enjoy
hiking, often combined with
photography. My main focus is
landscapes, but over the years I've also made trips to photograph
bears in some
spectacular spots in Alaska. Boulder is an outdoors-y place, and I've had fun
trying my hand at triathlons before more recently
switching to trail running.
Philip Armitage, JILA, 440 UCB
University of Colorado, Boulder, CO80309-0440
Tel: 303-492-7836; FAX: 303-492-5235