Astrophysical and Geophysical Magnetohydrodynamics (MHD)
Grand Challenge: Dynamo action in supernova-driven interstellar flows
Simulations of supernova driven turbulence in the Interstellar Medium (ISM)
Simulations of Faraday rotation measures in the turbulent ISM
Supernova-regulated ISM. I. The multi-phase structure (pdf version), with Anvar Shukurov, Andrew Fletcher, Graeme R. Sarson, Maarit J. Mantere (Submitted to MNRAS on 16 Apr 2012).
Galaxies in a box: A simulated view of the interstellar medium a chapter for ISSI Workshop book on large scale magnetic fields published 17 May 2011. Preprint
Through the support of HPC Europa I made a number of extended visits to the Physics Department of Helisnki University to work with Maarit Mantere and have access to the high performance computing resources of CSC in Espoo Finland. In February 2011 we were granted a Grand Challenge award of 2 million cpu hours and priority access to the CSC clusters to pursue an investigation of the galactic dynamo through high resolution extended duration numerical simulations of the interstellar medium.
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Here are my hosts from Helsinki Maarit and Petri Käpylä
Transnational Access Meeting (Barcelona) / UKMHD Conference (London) 2011-Jun: Supernova Driven Turbulence |
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British Science Association: Showcase 2009-Nov-06 |
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MMath 4th Year Project: Gerbes 2008-May-05 |
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Summer Scholarship: Star formation 2007-Nov-17 |
Movies of supernova (SN) driven turbulence in the interstellar medium (ISM). The movie first from the left (in blue) depicts the density of the ISM in which SN remnants appear as dark hollows, where the explosion has forced out the gas leaving a very diffuse remnant interior. The next movie (in red) depicts the temperature. In this case the SN remants appear as light flashes where the explosions heat the ISM to in excess of 10 Million degrees Kelvin. Each face shows a 2D slice through the centre of the box. The midplane of the galaxy is in the centre and our domain extend 1 kiloparsec (kpc) either side of the mid plane and covers an area 1 square kpc representing the radial and azimuthal directions relative to the galactic centre. We model conditions typical of the solar neighbourhood. (1 kpc = 30.86 thousand million million km) The latter two movies depict the magnetic field and show the dynamo action of the ISM from a small seed field. The movie on the right shows the magntic energy distribution and the mvoie next to it the azimuthal component of the magnetic field. A small seed field of 0.001 micro Gauss is amplified by the turbulence and differential rotation of the galaxy to about 2 micro Gauss.
Simulation of a single SN remnant in a uniform ambient ISM at rest for comparison with the snowplough solution and the enhanced result by Cioffi et al 1988. The red movie depicts temperature and blue gas density. 1051 ergs of energy, half as thermal energy and the rest as kinetic energy, are initially injected into a sphere with radius about the origin adjusted to enclose 60 solar masses. This heats the ISM inside the remnant to above 10 million Kelvin and shock waves exceeding 500 km s-1 transport the gas from the core of the remnant into a dense expanding shell.
I work part time in MathsAid, providing a drop in service for one-to-one tuition in mathematics and numeracy for undergraduate and graduate students within Newcastle University.

2009-2010: I coordinated the applied mathematics internal seminar series within the School of Mathematics and Statistics at Newcastle Unviversity together with Andrew Baggaley and Matthew Buckley. Here we are together at the Nordita winter school in Stockholm along with Drew Smith(left to right: Drew,Matt,Bags,me).
2009-present: I coordinate weekly 5-a-side football in the University Sports Centre for staff and graduate students in the School of Mathematics and Statistics at Newcastle University. We also include visiting students from some other schools, who may have collaborated with us from time to time on research. These are friendly competitive games.
Here is a snap taken to commemorate the last game of Daisuke (on the right), who was visiting the School of Agriculture, Food & Rural Development from Japan. Unfortunately on this day I was absent through one of my numerous injuries.
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David Elliot Matteo Bossi Daisuke Kobayashi |
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2009-present: Previously with Kevin Wilson and currently with Matthew Buckley I represent the students on the Postgraduate Committee which meets with staff from the three School disciplines (Applied, Pure and Statistics) about once per quarter.
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| Rute | Tim | Joy | Lucy |
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| Donatello | Anisah | Fred |
Amongst various activities we arranged a day paintballing in the woods near Ponteland. Very wet, very messy and a lot of fun.
In addition to my research interests I am a Grade 6 Driving Instructor part time.
I support Newcastle United FC and enjoy playing 5-a-side (if fit), swimming, running along the beach, and playing badminton and basketball.
Favourite TV dramaThe Killing: a Danish crime drama. Sara Lund's jumper! Shows on BBC Four |
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FamilyMy son Declan with a monkey in earlier years at Tenereife Zoo. He is the one without the tail. More recently in My Chem outfit. Step kids Daniel & Katy. |
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