First joint X-ray solar microflare observations with NuSTAR and Solar Orbiter/STIX
N. Bajnoková, I. G. Hannah, K. Cooper, S. Krucker, B. W. Grefenstette, D. Smith, N. Jeffrey, J. Duncan
MNRAS (2024, submitted) [arXiv link]Thermal Evolution of an Active Region through Quiet and Flaring Phases as Observed by NuSTAR XRT, and AIA
J. Duncan, R. Masek, A. Y. Shih, L. Glesener, W. Barnes, K. K. Reeves, Y. Zhang, I. G. Hannah, B. W. Grefenstette
ApJ (2024, accepted) [arXiv link]Time Evolution of X-Ray Bright Points Observed With NuSTAR
S. Paterson, I. G. Hannah, B. W. Grefenstette, H. Hudson, S. Krucker, L. Glesener, S . White, D. Smith
MNRAS 528, 4, 6398-6410 (2024) [arXiv link]Detecting non-thermal emission in a solar microflare using nested sampling
K. Cooper, I. G. Hannah, L. Glesener, B. W. Grefenstette
MNRAS 529, 1 (2024) [arXiv link]Statistical analysis of the onset temperature of solar flares in 2010 - 2011
D. Félix da Silva, L. Hui, P. J. A. Simões, A. Valio Costa, H. S. Hudson, L. Fletcher, L. A. Hayes, I. G. Hannah
MNRAS 525 3, 4143-4148 (2023) [arXiv link]Robust Construction of DEM Profiles and Maps from AIA data using a Regularized Maximum Likelihood Method
P. Massa, A. G. Emslie, I. G. Hannah, E. P. Kontar
A&A 672 A120 (2023) [arXiv link]The First Survey of Quiet Sun Features Observed in Hard X-Rays With NuSTAR
S. Paterson, I. G. Hannah, B. W. Grefenstette, L. Glesener, S. Krucker, H. S. Hudson, S. M. White
Solar Physics 298 47 (2023) [arXiv link]Multi-stage reconnection powering a solar coronal jet
D. M. Long, L. P. Chitta, D. Baker, I. G. Hannah, N. Ngampoopun, D. Berghmans, A. N. Zhukov, L. Teriaca
ApJ 944 19 (2023) [arXiv link]NuSTAR observations of a repeatedly microflaring active region
K. Cooper, I. G. Hannah, B. W. Grefenstette, L. Glesener, S. Krucker, H. S. Hudson, S. M. White, D. M. Smith and J. Duncan
MNRAS 507 3 (2021) [arXiv link]NuSTAR Observation of Energy Release in Eleven Solar Microflares
J. Duncan, L. Glesener, B. W. Grefenstette, J. Vievering, I. G. Hannah, D. M. Smith, S. Krucker, S. M. White, H. S. Hudson
ApJ 908 29 (2021) [arXiv link]Hot X-ray Onsets of Solar Flares
H. S. Hudson, P. J. A. Simoes, L. Fletcher, L. A. Hayes, I. G. Hannah
MNRAS 501 1 (2021) [arXiv link]Lyman-alpha Variability During Solar Flares Over Solar Cycle 24 Using GOES-15/EUVS-E
R. O. Milligan, H. S. Hudson, P. C. Chamberlin, I. G. Hannah, L. A. Hayes
Space Weather 18 7 (2020) [arXiv link]NuSTAR Observation of a Minuscule Microflare in a Solar Active Region
K. Cooper, I. G. Hannah, B. W. Grefenstette, L. Glesener, S. Krucker, H. Hudson, S. White, D. Smith,
ApJL 893 2 (2020) [arXiv link]Accelerated electrons observed down to <7 keV in a NuSTAR solar microflare
L. Glesener, S. Krucker, J. Duncan, I. G. Hannah, B. W. Grefenstette, B. Chen, D. M. Smith, S. M. White, H. Hudson
ApJL 891 2 (2020) [arXiv link]Joint X-ray, EUV and UV Observations of a Small Microflare
I. G. Hannah, L. Kleint, S. Krucker, B. W. Grefenstette, L. Glesener, H. S. Hudson, S. M. White, D. M. Smith,
ApJ 881 2 (2019) [arXiv link]The association of the Hale Sector Boundary with RHESSI solar flares & active longitudes
K. Loumou, I. G. Hannah, H. S. Hudson,
A&A 12 A9 (2018) [arXiv link]Hard X-Ray Constraints on Small-Scale Coronal Heating Events
A. J. Marsh, D. M. Smith, L. Glesener, J. A. Klimchuk, S. J. Bradshaw, J. Vievering, I. G. Hannah, S. Christe, S. Ishikawa, S. Krucker,
ApJ 864 1 (2018) [arXiv link]NuSTAR detection of X-ray heating events in the quiet Sun
M. Kuhar, S. Krucker, L. Glesener, I. G. Hannah, B. W. Grefenstette, D. M. Smith, H. S. Hudson, S. White
ApJ 856 L32 (2018) [arXiv link]Determination of Differential Emission Measure from Solar Extreme Ultraviolet Images
Y. Su, A. Veronig, I. G. Hannah, M. C. Cheung, B. R. Dennis, G. D. Holman, W. Gan, Y. Li
ApJ 856 L17 (2018)First NuSTAR Limits on quiet Sun Hard X-ray transient events
A. Marsh, D. Smith, L. Glesener, I. G. Hannah, B. W. Grefenstette, A. Caspi, S. Krucker, H. S. Hudson, K. K. Madsen, S. White, M. Kuhar, P. J. Wright, S. E. Boggs, F. E. Christensen, W. W. Craig, K. Forster, C. J. Hailey, F. A. Harrison, H. Miyasaka, D. Stern, W. W. Zhang
ApJ 849 131 (2017) [arXiv link]Observations of Reconnection Flows in a Flare on the Solar Disk
J. Wang, P. J. A. Simoes, N. L. S. Jeffrey, L. Fletcher, P. J. Wright, I. G. Hannah
ApJL 847 1 (2017) [arXiv link]NuSTAR hard X-ray observation of a sub-A class solar flare
L. Glesener, S. Krucker, I. G. Hannah, H. S. Hudson, B. W. Grefenstette, S. M. White, D. M. Smith, A. J. Marsh
ApJ 845 2 (2017) [arXiv link]Microflare Heating of a Solar Active Region Observed with NuSTAR, Hinode/XRT, and SDO/AIA
P. J. Wright, I. G. Hannah, B. W. Grefenstette, L. Glesener, S. Krucker, H. S. Hudson, D. M. Smith, A. J. Marsh, S. M. White, M. Kuhar
ApJ 844 2 (2017) [arXiv link]Evidence of significant energy input in the late phase of a solar flare from NuSTAR X-ray observations
M. Kuhar, S. Krucker, I. G. Hannah, L. Glesener, P. Saint-Hilare, B. W. Grefenstette, H. S. Hudson, S. White, D. M. Smith, A. J. Marsh, P. J. Wright, S. E. Boggs, F. E. Christensen, W. W. Craig, C. J. Hailey, F. A. Harrison, D. Stern, W. W. Zhang
ApJ 835 6 (2017) [arXiv link]Arcade implosion caused by a filament eruption in a flare
J. Wang, P. J. A. Simoes, L. Fletcher, J. K. Thalmann, H. S. Hudson, I. G. Hannah
ApJ 833 2 (2016) [arXiv link]The first focused hard X-ray images of the sun with NuSTAR
B. W. Grefenstette, L. Glesener, S. Krucker, H. S. Hudson, I. G. Hannah, D. M. Smith, J. K. Vogel, S. White, K. K. Madsen, A. J. Marsh, A. Caspi, B. Chen, A. Shih, M. Kuhar, S. E. Boggs, F. E. Christensen, W. W. Craig, K. Forster, C. J. Hailey, F. A. Harrison, H. Miyasaka, D. Stern, W. W. Zhang
ApJ 826 1 (2016) [arXiv link]Simulation of Quiet-Sun Hard X-rays Related to Solar Wind Superhalo Electrons
W. Wang, L. Wang, S. Krucker, I. G. Hannah
Solar Physics 291 1357 (2016) [arXiv link]The first X-ray imaging spectroscopy of quiescent solar active regions with NuSTAR
I. G. Hannah, B. W. Grefenstette, D. M. Smith, L. Glesener, S. Krucker, H. S. Hudson, K. K. Madsen, A. Marsh, S. M. White, A. Caspi, A. Y. Shih, F. A. Harrison, D. Stern, S. E. Boggs, F. E. Christensen, W. W. Craig, C. J. Hailey, W. W. Zhang
ApJL 820 L14 (2016) [arXiv link]Coronal response to an EUV wave from DEM analysis
K. Vanninathan, A. M. Veronig, K. Dissauer, M. S. Madjarska, I. G. Hannah & E. P. Kontar
ApJ 812 2 (2015) [arXiv link]Solar Sector Structure
H. S. Hudson, L. Svalgaard and I. G. Hannah
Space Sciences Reviews 186 1-4, 17-34 (2014) [arXiv link]Hot Spine Loops and the Nature of a Late-Phase Solar Flare
X. Sun, J. T. Hoeksema, Y. Liu, G. Aulanier, Y. Su, I. G. Hannah and R. A. Hock
ApJ 778 139 (2013) [arXiv link]Multi-thermal dynamics and energetics of a coronal mass ejection in the low solar atmosphere
I. G. Hannah and E. P. Kontar
A&A 553 A10 (2013) [arXiv link] [software webpage]Flare ribbon energetics in the early phase of an SDO flare
L. Fletcher, I. G. Hannah, H.S. Hudson and D.E. Innes
ApJ 771 104 (2013) [arXiv link]The emission measure distribution of impulsive phase flare footpoints
D. R. Graham, I. G. Hannah, L. Fletcher and R. O. Milligan
ApJ 767 83 (2013) [arXiv link]Effect of turbulent density fluctuations on wave-particle interactions and solar flare Xray spectra
I. G. Hannah, E. P. Kontar and H. A. S. Reid
A&A 550 A51 (2013) [arXiv link]Kelvin-Helmholtz Instability of the CME Reconnection Outflow Layer in the Low Corona
C. Foullon, E. Verwichte, K. Nykyri, M. J. Aschwanden and I. G. Hannah
ApJ 767 170 (2013)Differential Emission Measures from the Regularized Inversion of SDO and Hinode data
I. G. Hannah and E. P. Kontar
A&A 539 A146 (2012) [arXiv link][software webpage]Solar Particle Acceleration, Radiation and Kinetics (SPARK): a mission to understand the nature of particle acceleration
S. Matthews, D. Williams, K. Klein, E. Kontar, D. Smith, S. Krucker, A. Lagg, G. Hurford, N. Vilmer, A. MacKinnon, V. Zharkova, L. Fletcher, I. G. Hannah, P. Browning, D. Innes, G. Trottet, C. Foullon, V. Nakariakov, L. Green, H. Lamoureux, C. Forsyth, D. Walton, M. Mathioudakis, A. Gandorfer, V. Martinez -Pillet, O. Limousin, E. Verwichte, S. Dalla, G. Mann, H. Aurass, T. Neukirch
Experimental Astronomy 33 2-3 237-269 (2012)Microflares and the Statistics of X-ray Flares
I. G. Hannah, H. S. Hudson, M. Battaglia, S. Christe, J. Kasparova, M. Kundu, S. Krucker, A. Veronig
Space Sciences Reviews 159 1-4 233-300 (2011) [arXiv link]Hinode/EIS density diagnostics in the flaring solar chromosphere
D. R. Graham, L. Fletcher, I. G. Hannah
A&A 532 A27 (2011)Estimates of Densities and Filling Factors from a Cooling Time Analysis of Solar Microflares Observed with RHESSI
R. N. Baylor, P. A. Cassak, S. Christe, I. G. Hannah, S. Krucker, D. J. Mullan, M. A. Shay, H. S. Hudson, and R. P. Lin
ApJ 736 75 (2011) [arXiv link]Flaring Solar Hale Sector Boundaries
L. Svalgaard, I. G. Hannah, H. S. Hudson
ApJ 733 49 (2011) [arXiv link]The spectral difference between solar flare HXR coronal and footpoint sources due to wave-particle interactions.
I. G. Hannah and E. P. Kontar
A&A 529 A109 (2011) [arXiv link]Acceleration, magnetic fluctuations and cross-field transport of energetic electrons in a solar flare loop
E. P. Kontar , I. G. Hannah, N. H. Bian
ApJ 730 L22 (2011) [arXiv link]The influence of albedo on the size of hard X-ray flare sources
M. Battaglia, E. P. Kontar and I. G. Hannah
A&A 526, A3 (2011) [arXiv link]Constraining the hard X-ray properties of the quiet Sun with new RHESSI observations
I. G. Hannah, H. S. Hudson, G. J. Hurford and R. P. Lin.
ApJ 724 487-492 (2010) [arXiv link]From large-scale loops to the sites of dense flaring loops: preferential conditions for long-period pulsations in solar flares
C. Foullon, L. Fletcher, I. G. Hannah, E. Verwichte, B. Cecconi, V. M. Nakariakov, K. J. H. Phillips, B. L. Tan
ApJ 719, 151-165 (2010)The Sub-Arcsecond Structure of Solar Flare Hard X-ray Footpoints
E. P. Kontar, I. G. Hannah, N. L. Jeffery, M. Battaglia
ApJ 717, 250-256 (2010) [arXiv link]The effect of wave-particle interactions on low energy cutoffs in solar flare electron spectra
I. G. Hannah, E. P. Kontar, O. K. Sirenko
ApJ 707, L45-L50 (2009) [arXiv link]Magnetic flux cancellation associated with a recurring solar jet observed Hinode, RHESSI and STEREO/EUVI
C. Chifor, H. Isobe, H. E. Mason, I. G. Hannah, P. R. Young, G. Del Zanna, S. Krucker, K. Ichimoto, Y. Katsukawa and T. Yokoyama
A&A 491, 279-288 (2008) [pdf preprint]Chromospheric magnetic field & density structure measurements using hard X-rays in a flaring coronal loop
E. P. Kontar, I. G. Hannah and A. L. MacKinnon
A&A 489, L57-L60 (2008) [arXiv link]RHESSI Microflare Statistics II: X-ray Imaging, Spectroscopy & Energy Distributions
I. G. Hannah, S. Christe, S. Krucker, G. J. Hurford, H. S. Hudson and R. P. Lin
ApJ 677, 704-718 (2008) [arXiv link]RHESSI Microflare Statistics I: Flare-finding & Frequency Distributions
S. Christe, I. G. Hannah,S. Krucker, J. McTiernan and R. P. Lin
ApJ 677 1385-1394 (2008) [pdf pre-print]An Intriguing Solar Microflare Observed with RHESSI, Hinode and TRACE
I. G. Hannah, S. Krucker, H. S. Hudson, S. Christe and R. P. Lin
A&A 481 L45-L48 (2008) [arXiv link]Coronal Jet Observed by Hinode as the source of a 3He-rich SEP Event
N. V. Nitta, G. M. Mason, M. E. Wiedenbeck, C. M. S. Cohen, S. Krucker, I. G. Hannah, M. Shimojo, and K. Shibata
ApJL 675 L125 (2008) [pdf pre-print]RHESSI and Hinode X-Ray Observations of a Partially Occulted Solar Flare
S. Krucker, I. G. Hannah, R. P. Lin
ApJL 671 L193 (2007)First limits on the 3-200 keV X-ray spectrum of the quiet Sun using RHESSI
I. G. Hannah, G. J. Hurford, H. S. Hudson, R. P. Lin and K. van Bibber
ApJL 659, L77 (2007) [arXiv link]A TRACE White Light and RHESSI Hard X-Ray Study of Flare Energetics
L. Fletcher, I. G. Hannah, H. S. Hudson and T. R. Metcalf
ApJ 656, 1187-1196 (2007)A new method of observing weak extended X-ray sources with RHESSI
I. G. Hannah, G. J. Hurford, H. S. Hudson and R. P. Lin
Review of Scientific Instruments 78, 024501 (2007) [arXiv link]-
Comparison of the Energy Spectra and Number Fluxes from a Simple Flare Model to Observations.
I. G. Hannah and L. Fletcher
Solar Physics, 236, 59-74 (2006) [post-print link]
Dr Iain G. Hannah
Office Address: Rm 617, School of Physics & Astronomy, Kelvin Building, University of Glasgow, Glasgow, G12 8QQ, UK
Email: iain.hannah@glasgow.ac.uk
I am a Senior Lecturer (and former Royal Society University Research Fellow) working in the Astronomy & Astrophysics Group at the School of Physics & Astronomy of the University of Glasgow. A brief c.v. is at the bottom of this page and my university profile is here.
My research is focused on the physical processes behind the emission we observe in solar flares (or explosive bursts) in the Sun's atmosphere. I study this primarily through multi-wavelength observations combined with theory and numerical simulations. I am particularly interested in small active region flares (microflares and smaller) and also quiet sun emission. I have studied these with the solar X-ray telescope RHESSI, and now with the astrophysics X-ray telescope NuSTAR probing the emission from these weak events (pr/news: first observations, full-sun mosaic, quiet Sun observation, active sun mosaic). My overview of these solar NuSTAR observations is available on GitHub Pages.
Publications & Code:
NASA/ADS || arXiv || enlighten || Web of Science || ORCID || Google Scholar Citations || GitHub
See the expandable lists below: refereed publications || other/conference publications || thesis
I engage in a variety of public outreach activities, especially giving talks (to local astronomy groups, science centres, cafe scientifique, skeptics etc) and I also organised the Glasgow event for the 2015 eclipse.
The Solar Particle Acceleration Radiation and Kinetics (SPARK) mission concept
Reid, Musset, Ryan, Andretta, Auchère, Baker, Benvenuto, Browning, Buchlin, Calcines Rosario, Christe, Corso, Dahlin, Dalla, Del Zanna, Denker, Dudík, Erdélyi, Ermolli, Fletcher, Fludra, Green, Gordovskyy, Guglielmino, Hannah, Harrison, Hayes, Inglis, Jeffrey, Kašparová, Kerr, Kintziger, Kontar, Krucker, Laitinen, Laurent, Limousin, Long, Maloney, Massa, Massone, Matthews, Mrozek, Nakariakov, Parenti, Piana, Polito, Pesce-Rollins, Romano, Rouillard, Sasso, Shih, Stęślicki, Orozco Suárez, Teriaca, Verma, Veronig, Vilmer, Vocks, and Warmuth, A.
Aerospace 10(12) 1034 (2023)The Large Imaging Spectrometer for Solar Accelerated Nuclei (LISSAN): A next-generation solar γ-ray spectroscopic imaging instrument concept
Ryan, Musset, Reid, Krucker, Battaglia, Bréelle, Chapron, Collier, Dahlin, Denker, Dickson, Gallagher, Hannah, Jeffrey, Kašparová, Kontar, Laurent, Maloney, Massa, Massone, Mrozek, Pailot, Pallu, Pesce-Rollins, Piana, Plotnikov, Rouillard, Shih, Smith, Steslicki, Stiefel, Warmuth, Verma, Veronig, Vilmer, Vocks, and Volpara
Aerospace 10(12) 985 (2023)The Focusing Optics X-ray Solar Imager (FOXSI)
Christe, Alaoui, Allred, Battaglia, Baumgartner, Buitrago-Casas, Caspi, Chen, Chen, Dennis, Drake, Glesener, Hannah, Hayes, Hudson, Inglis, Ireland, Klimchuk, Kowalski, Krucker, Massone, Musset, Piana, Ryan, Shih, Veronig, Vilmer, Warmuth, White
NASA Decadal Survey for Solar and Space Physics 2024-2033 ESA White Paper (2023)Fundamentals of impulsive energy release in the corona
Shih, Glesener, Krucker, Guidoni, Christe, Reeves, Gburek, Caspi, Alaoui, Allred, Battaglia, Baumgartner, Dennis, Drake, Goetz, Golub, Hannah, Hayes, Holman, Inglis, Ireland, Kerr, Klimchuk, McKenzie, Moore, Musset, Reep, Ryan, Saint-Hilaire, Savage, Seaton, Stęślicki, Woods
NASA Decadal Survey for Solar and Space Physics 2024-2033 ESA White Paper (2023)The need for focused, hard X-ray investigations of the Sun
Glesener, Shih, Caspi, Milligan, Hudson, Oka, Buitrago-Casas, Guo, Ryan, Kontar, Veronig, Hayes, Inglis, Golub, Vilmer, Gary, Reid, Hannah, Kerr, Reeves, Allred, Guidoni, Yu, Christe, Musset, Dennis, Oliveros, Athiray, Vievering, White, Winebarger, Drake, Jeffrey, Antiochos, Duncan, Zhang, Alaoui, Simões, Battaglia, Setterberg, Masek, Chen, Peterson, Krucker, Temmer, Saint-Hilaire, Petrosian, Knuth, Moore
NASA Decadal Survey for Solar and Space Physics 2024-2033 ESA White Paper (2023)The high-energy Sun - probing the origins of particle acceleration on our nearest star
S. A Matthews, H. A. S. Reid, D. Baker, D. S. Bloomfield, P. K. Browning, A. Calcines, G. Del Zanna, R. Erdelyi, L. Fletcher, I. G. Hannah, N. Jeffrey, L. Klein, S. Krucker, E. Kontar, D. M. Long, A. MacKinnon, G. Mann, M. Mathioudakis, R. Milligan, V. M. Nakariakov, M. Pesce-Rollins, A. Y. Shih, D. Smith, A. Veronig & N. Vilmer
Exp Astron 54 335-360 (2022)Solar Particle Acceleration, Radiation & Kinetics (SPARK)
Matthews, Baker, Bloomfield, Browning, Calcines, Del Zanna, Erdelyi, Fletcher, Hannah, Jeffrey, Klein, Krucker, Kontar, Long, MacKinnon, Mann, Mathioudakis, Milligan, Pesce-Rollins, Reid, Shih, Smith, Veronig, Vilmer
ESA Voyage 2050 White Paper (2019)Exploring impulsive solar magnetic energy release and particle acceleration with focused hard X-ray imaging spectroscopy
Christe, Krucker, Glesener, Shih, Saint-Hilaire, Caspi, Allred, Battaglia, Chen, Drake, Dennis, Gary, Gburek, Goetz, Grefenstette, Gubarev, Hannah, Holman, Hudson, Inglis, Ireland, Ishikawa, Klimchuk, Kontar, Kowalski, Longcope, Massone, Musset, Piana, Ramsey, Ryan, Schwartz, Stęślicki, Turin, Warmuth, Wilson-Hodge, White, Veronig, Vilmer, Woods,
Next Generation Solar Physics Mission (2017)X-ray Searches for Solar Axions
H. S. Hudson, L. W. Acton, E DeLuca, I. G. Hannah, K. Reardon, and K. van Bibber
4th Hinode Science Meeting (2012)Microflares with RHESSI and Hinode/XRT
I. G. Hannah, S. Krucker, S. Christe, H. S. Hudson and R. P. Lin
1st Hinode Results Meeting, Dublin, Ireland, ASPC 397 (2008)Active Region Microflares From Hinode and RHESSI
C. Chifor, I. G. Hannah, H. E. Mason, H. Isobe, T. Yokoyama, P. R. Young, and D. Tripathi
1st Hinode Results Meeting, Dublin, Ireland, ASPC 397 (2008)Physical Conditions in Coronal Structures About to Flare
H. S. Hudson, I. G. Hannah, E. E. DeLuca, and M. Weber
1st Hinode Results Meeting, Dublin, Ireland, ASPC 397 (2008)Energy Deposition in White Light Flares with TRACE and RHESSI
L. Fletcher, I. G. Hannah, H. S. Hudson, T. R. Metcalf
The Physics of Chromospheric Plasmas (2007), Coimbra, PortugalRHESSI Microflare Statistics
I. G. Hannah, S. Christe, S. Krucker, H. S. Hudson, L. Fletcher and M. A. Hendry.
SOHO 15 Meeting (2004), St. Andrews, Scotland, UKChaotic dynamics and collisionless reconnection at an X-type neutral point
I. G. Hannah, L. Fletcher & M. A. Hendry
European Solar Physics Meeting: SPM10 (2002), Prague, Czech Republic
- Natalia Bajnokova (1st Supervisor, 2022-)
- Nawal Abed Alanazi (2nd Supervisor, 2022-)
- (Dr) Sarah Paterson (1st Supervisor, 2019-2023)
- Dr Alasdair Wilson (2019-2021)
- (Dr) Kristopher Cooper (1st Supervisor, 2018-2022)
- (Dr) Konstantina Loumou (1st Supervisor, 2015-2019)
- (Dr) Paul Wright (1st Supervisor, 2014-2019)
- (Dr) Juntao Wang (2nd Supervisor, 2014-2018)
- International Astronomical Union (IAU): Member;
- Institute of Physics (IoP): Member (MInstP);
- Royal Astronomical Society (RAS): Fellow (FRAS);
- Solar Physics Division/American Astronomical Society (SPD/AAS): Member;
- American Geophysical Union (AGU): Member;
- European Physical Society (EPS), Solar Physics Division: Member;
- UK Solar Physics (UKSP) Deputy Chair (2016) & Council Member (2009-2012, 2013).