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Astronomy & Astrophysics

Astronomy & Astrophysics. Group Profile. Prof John Brown (Astronomer Royal for Scotland) Dr Declan Diver Dr Lyndsay Fletcher Dr Martin Hendry Dr Alec Mackinnon (Dept. of Adult & Cont. Educ.) Dr Graham Woan. Faculty:. Research and Support Staff:. 10 Honorary & Visiting Faculty

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Astronomy & Astrophysics

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  1. Astronomy & Astrophysics Group Profile Prof John Brown (Astronomer Royal for Scotland) Dr Declan Diver Dr Lyndsay Fletcher Dr Martin Hendry Dr Alec Mackinnon (Dept. of Adult & Cont. Educ.) Dr Graham Woan Faculty: Research and Support Staff: 10 Honorary & Visiting Faculty 5 PDRAs (4 PPARC + 1 EPSRC) 2 PPARC-funded Computing Support 3 Secretarial + Technical Support Postgraduates: 13 (2 shared with IGR; 5 PPARC; 4 EPSRC)

  2. Astronomy & Astrophysics Major Change in Age Profile 5 Lecturer appointments in 12 years Focussing of Expertise Theory + Hardware Data utilisation Specific Skills Brown: Diver: Mackinnon: Woan: Hendry: Fletcher: plasma theory and diagnostics plasma theory and simulations plasma theory and gamma-ray diagnostics radio and signal analysis statistical modelling and cosmology solar data analysis and modelling

  3. Astronomy & Astrophysics Group involvement in hardware / data exploitation Solar: SoHO, Yohkoh, TRACE, RHESSI Stellar: XMM, Chandra, IUE, FUSE m-lensing: OGLE, PLANET, MOA Cosmology: PSCz, 2dF, HST, SDSS + links with IGR (Woan + joint PGs) in signal analysis and astrophysics Current PPARC support Rolling theory programme + RHESSI missiongrant approx. 1 quota studentship per year

  4. Analysis of RHESSI HXR Data RHESSI launched 5th Feb 2002 Unprecedented spatial and spectral resolution Glasgow sole UK Co-I Probing solar flare physics: HXR image analysis HXR spectral inversion Electron beam dynamics g-rays and ions

  5. Analysis of RHESSI HXR Data RHESSI launched 5th Feb 2002 Unprecedented spatial and spectral resolution Glasgow sole UK Co-I Probing solar flare physics: HXR image analysis HXR spectral inversion Electron beam dynamics g-rays and ions

  6. Analysis of RHESSI HXR Data RHESSI launched 5th Feb 2002 Unprecedented spatial and spectral resolution Glasgow sole UK Co-I Probing solar flare physics: HXR image analysis HXR spectral inversion Electron beam dynamics g-rays and ions

  7. RHESSI Spectroscopy April 21 2002 event: Time evolution of X-ray spectra: “Soft –Hard – Soft”

  8. Particle Acceleration Near Magnetic Nulls

  9. Solar Photospheric Flows Developing tools for Solar B mission Solar B will measure photospheric magnetic field and trace its interaction with the corona Footpoints advected by photospheric flow; flux tubes can become unstable; rapid release of magnetic energy

  10. Solar Photospheric Flows Developing tools for Solar B mission Solar B will measure photospheric magnetic field and trace its interaction with the corona Footpoints advected by photospheric flow; flux tubes become unstable; rapid release of magnetic energy Flow calculated by Lattice Boltzmann method

  11. Modelling Hot Star Winds Wolf-Rayet stars lose ~ 1 solar mass / 104 yrs: important for stellar evolution, ISM abundances World-leading expertise in inversion techniques for probing density, velocity structure of stellar winds Developed spectropolarimetric diagnostics of `clumpy’ winds XMM time to study Wolf-Rayet star variability

  12. Modelling Be Star Disks Physical origin of Be star disks unclear Developed (with Cassinelli) Magnetic Torquing model. Fits well observations across spectral class

  13. Robust Statistical Methods for Cosmology 21st Century an era of ‘precision cosmology’ Crucial to improve statistical techniques for testing model assumptions Developing robust methods for analysis of redshift surveys: investigating completeness constraining luminosity evolution

  14. Robust Statistical Methods for Cosmology 21st Century an era of ‘precision cosmology’ Crucial to improve statistical techniques for testing model assumptions Developing robust methods for analysis of redshift surveys: investigating completeness constraining luminosity evolution

  15. Future Plans Further expand pioneering research programme in: astrophysical plasma theory, diagnostics and simulations; statistical analysis of sparse and noisy data problems Specific Goals: Analysis and interpretation of RHESSI data Optimal exploitation of: Solar B, Stereo, Planck, SNAP, GEST, GEO600 Age profile enables long term strategy – participation in PPARC Roadmap

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