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Matthew Green

I am a PhD student in the Astronomy and Astrophysics group at the University of Warwick. My supervisors are Tom Marsh and Danny Steeghs. My PhD focuses on AM CVns, a class of He-dominated cataclysmic variables which include the shortest period binaries known. I am particularly interested in the first fully-eclipsing AM CVn, Gaia14aae.

Research

AM CVn-type binaries are laboratories of extreme physics and the dominant source of gravitational waves at frequencies detectable by a space interferometer such as LISA, as well as potential sources of dwarf novae, classical novae, type 1a supernovae, and ".1a" supernovae. They consist of a central white dwarf accreting He-rich material from a donor, which may be either another white dwarf or a He-atmosphere star.

Because of their rarity only around 50 are known. In 2014 the first fully-eclipsing AM CVn was discovered, Gaia14aae, offering an unprecedented wealth of information on the structure and evolutionary history of these objects. I am studying this system using high-speed photometry and time-resolved spectroscopy.

Outreach

I am a regular writer for Astrobites, who summarise astro-ph papers aimed at an undergraduate level. I also volunteer for the department's planetarium, which is used on visits to local schools.

Publications

Conference Talks and Posters

  • Talk: "Gaia14aae: An Eclipsing AM CVn that Challenges Formation Models" (NAM, Hull, July 2017)
  • Poster: "An Update on Gaia14aae, the First Eclipsing AM CVn" (European White Dwarf Workshop, Warwick, June 2016). Proceedings.

Me at Teide

Write to:

Matthew Green,
Department of Physics,
University of Warwick,
Coventry CV4 7AL
UK
 

Contact details:

Office: PS0.16F
E-Mail: Matthew.Green AT warwick.ac.uk
Twitter: @matthu7777