Trevor Ponman is an astrophysicist who studies hot gas in galaxies, galaxy groups and galaxy clusters. Such gas records both gravitational confinement and the energy supplied by stellar activity.[ref]
https://www.birmingham.ac.uk/staff/profiles/physics/ponman-trevor. University of Birmingham research profile
With Dave Strickland and Ian Stevens, he analysed diffuse X-ray emission from the M82 galactic wind. Separating point sources from extended emission allowed the team to infer properties of the outflowing gas and test physical explanations for its radiation.[ref]
ROSAT Observations of the Galactic Wind in M82 by Dave Strickland and others. Abstract: separation of point and diffuse emission
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