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G.Yim@soton.ac.uk

Mr Garvin Yim MPhys (Hons) in Physics with Astrophysics

Postgraduate research student

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Garvin Yim is a PhD student within the Gravity Group of Mathematical Sciences at the University of Southampton.

My current research involves trying to understand the physical mechanism behind pulsar timing irregularities (glitches and timing noise) through the means of gravitational waves.

In the first of part of my PhD, I created a simple model to explain pulsar glitch recoveries as due to the formation of a transient mountain. This “transient mountain model” predicts transient gravitational waves to be emitted post-glitch and can be searched for in gravitational wave data.

Now, I am considering a physical mechanism to describe pulsar timing noise, which may be related to oscillations on the neutron star. I am mathematically modelling such a system to see if the theory can reproduce what is observed.

Prior to coming to the University of Southampton, my MPhys project involved studies into the radio emission mechanism from pulsars. My MPhys was completed at the University of Manchester (and Jodrell Bank Observatory) and was supervised by Dr. Patrick Weltevrede. In particular, I investigated how the fan-beam model could be used to fit pulse profiles and polarisation data in order to determine a pulsar’s viewing geometry.

In the Summer of 2016, I also worked with Dr. Patrick Weltevrede for a summer research placement. I investigated how the carousel model for pulsar beam patterns could explain the phenomenon of drifting subpulses.

Research interests

  • Pulsars
  • Neutron Stars
  • Gravitational Waves
  • Phenomenology

PhD Title: “Gravitational waves from timing irregularities of radio pulsars”

Supervisor: Prof. Ian Jones

Funding: EPSRC Studentship

Research group

Applied Mathematics and Theoretical Physics

Affiliate research group

Relativistic Astrophysics

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Teaching Assistant in:

  • MATH1006 – Mathematical Methods for Physical Scientists 1a
  • MATH1058 – Operational Research and Mathematical Computing
  • MATH3087 – Mathematics and Your Future

Marker in:

  • MATH1006 – Mathematical Methods for Physical Scientists 1a
  • MATH1055 – Mathematics for Electronics and Electrical Engineering Part I
  • MATH1057 – Dynamics and Relativity
  • MATH1060 – Multi-variable Calculus
  • MATH2044 – Fields and Fluids
  • MATH2047 – Mathematics for Electronics and Electrical Engineering Part II
Mr Garvin Yim
Building 54 Mathematical Sciences University of Southampton Highfield Southampton SO17 1BJ

Room Number NNN: 54/2019

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