John Armstrong

PhD Student

I am working with Prof. Lyndsay Fletcher on the implementation of machine learning algorithms in solar observations. My main focus is on flare spectropolarimetry and how machine learning techniques can aid the data analysis process for carrying out chromospheric magnetic field diagnostics in a flaring atmosphere.

Currently, I am developing a generative adversarial network (GAN) to correct for atmospheric seeing in ground-based flare observations. This is when we set up a generator to generate images corrected from seeing and a discriminator to decide whether or not these images are real data or generated. The goal of this is for the two to train each other into a state wherein the generator can produce images corrected for seeing that are perceptually convincing whilst still preserving spectral integrity.

I am also interested in a solar ImageNet development which would aid transfer learning and initialisation for a wide variety of solar machine learning problems in the future.

Poster Presentations

Room 604
School of Physics and Astronomy
Kelvin Building
University of Glasgow
G12 8QQ
Scotland

Email: j.armstrong.2@research.gla.ac.uk

Tel: +44 141 330 2960


Stephen Brown

 

Astro-WB-SABPhD Student

I am working with Prof. Lyndsay Fletcher on solar flares. We are currently looking at the behaviour of the chromosphere during flares, with a particular focus on the hydrogen Lyman lines.

After using EVE observations to measure Doppler shifts in these lines, we found signatures of both plasma upflows and downflows. We are now using radiative hydrodynamic and radiative transfer codes, RADYN & RH, to produce simulated H Lyman profiles and understand their formation in the solar atmosphere. In 2016 I visited the NASA Goddard Space Flight Centre for 4 months to further this work, and presented our observations at the SDO Living With A Star conference in Vermont.

Publications:

Doppler speeds of the hydrogen Lyman lines in solar flares from EVE – Astronomy & Astrophysics -11/2016 – Stephen Brown, Lyndsay Fletcher & Nicolas Labrosse

Hydrogen Balmer Line Broadening in Solar and Stellar FlaresAstrophysical Journal – 2017 – Adam F Kowalski, Joel C Allred, Han Uitenbroek, Pier-Emmanuel Tremblay, Stephen Brown, Mats Carlsson, Rachel A Osten, John P Wisniewski, Suzanne L Hawley

Radiative hydrodynamic modelling of the hydrogen Lyman lines in the flaring chromosphere [in prep]

Room 604
School of Physics and Astronomy
Kelvin Building
University of Glasgow
G12 8QQ
Scotland

Email: s.brown.6@research.gla.ac.uk

Tel: +44 141 330 2960
Fax: +44 141 330 8600


Nicolina Chrysaphi

chrysaphi

PhD Student

n.chrysaphi.1@research.gla.ac.uk

Room 604
School of Physics and Astronomy
Kelvin Building
University of Glasgow
G12 8QQ
Scotland

Email:

Tel: +44 141 330 2960
Fax: +44 141 330 8600


Salma Islam

PhD Student

I am working with Prof. Martin Hendry.

Room 604
School of Physics and Astronomy
Kelvin Building
University of Glasgow
G12 8QQ
Scotland

Email: s.islam.1@research.gla.ac.uk

Tel: +44 141 330 2960
Fax: +44 141 330 8600


Konstantina Loumou

IMG_20151010_155200

PhD Student

k.loumou.1@research.gla.ac.uk

Room 604
School of Physics and Astronomy
Kelvin Building
University of Glasgow
G12 8QQ
Scotland

Email:

Tel: +44 141 330 2960
Fax: +44 141 330 8600


Kyle Martin

PhD Student

f.martin.1@research.gla.ac.uk

Room 616
School of Physics and Astronomy
Kelvin Building
University of Glasgow
G12 8QQ
Scotland

Email:

Tel: +44 141 330 3816


Thomas Murat

PhD Student

t.murat.1@research.gla.ac.uk

Room 604
School of Physics and Astronomy
Kelvin Building
University of Glasgow
G12 8QQ
Scotland

Email:

Tel: +44 141 330 2960
Fax: +44 141 330 8600


Christopher Osborne

PhD Student

Room ???
School of Physics and Astronomy
Kelvin Building
University of Glasgow
G12 8QQ
Scotland

Email:

Tel: +44 141 330 ????
Fax: +44 141 330 8600


Andrew Rodger

PhD Student

a.rodger.1@research.gla.ac.uk

Room 604
School of Physics and Astronomy
Kelvin Building
University of Glasgow
G12 8QQ
Scotland

Email:

Tel: +44 141 330 2960
Fax: +44 141 330 8600


Juntao Wang

PhD Student

Room 614
School of Physics and Astronomy
Kelvin Building
University of Glasgow
G12 8QQ
Scotland

Email: j.wang.4@research.gla.ac.uk

Tel: +44 141 330 0855


Paul Wright

PhD Student

pjwright_photoI am a final-year Ph.D. student studying the heating of non-flaring/micro-flaring active regions, supervised by Dr Iain Hannah.

My interests range from stellar to solar physics; my main interests lie in the heating of the solar atmosphere, including active regions and loops. I am currently gaining expertise in analysis of data from SDO/AIA, Hinode/XRT, Hinode/EIS, and NuSTAR.

Publications:

[1] Andrew J. Marsh, David M. Smith, Lindsay Glesener, Iain G. Hannah, Brian W. Grefenstette, Amir Caspi, Sam Krucker, Hugh S. Hudson, Kristin K. Madsen, Stephen M. White, Matej Kuhar, Paul J. Wright, Steven E. Boggs, Finn E. Christensen, William W. Craig, Charles J. Hailey, Fiona A. Harrison, Daniel Stern, and William W. Zhang 2017. First NuSTAR Limits on Quiet Sun Hard X-Ray Transient Events, ApJ, 849 131

[2] Juntao Wang, Paulo J. A. Simoes, Natasha L. S. Jeffrey, Lyndsay Fletcher, Paul J. Wright, Iain G. Hannah 2017. Observations of Reconnection Flows in a Flare on The Solar Disk, ApJL, 847, L1

[3] Paul J. Wright, Iain G. Hannah, Brian W. Grefenstette, Lindsay Glesener, Säm Krucker, Hugh S. Hudson, David M. Smith, Andrew J. Marsh, Stephen M. White, and Matej Kuhar 2017.
Microflare Heating of a Solar Active Region Observed with NuSTAR, Hinode/XRT, and SDO/AIA, ApJ, 844, 132

[4] Matej Kuhar, Säm Krucker, Iain G. Hannah, Lindsay Glesener, Pascal Saint-Hilaire, Brian W. Grefenstette, Hugh S. Hudson, Stephen M. White, David M. Smith, Andrew J. Marsh, Paul J. Wright, Steven E. Boggs, Finn E. Christensen, William W. Craig, Charles J. Hailey, Fiona A. Harrison, Daniel Stern, and William W. Zhang 2017. Evidence of Significant Energy Input in the Late Phase of a Solar Flare from NuSTAR X-ray Observations, ApJ, 835, 6

 

A CV (pdf) can be found here.

Room 614
School of Physics and Astronomy
Kelvin Building
University of Glasgow
G12 8QQ
Scotland

Paul.Wright@glasgow.ac.uk

Tel: +44 141 330 8855 x0855
Fax: +44 141 330 8600