32 citations · 138 across the 16 of their papers we have counts for
17 papers
Delayed, Line-dependent Reorganization of Pore Oscillations Following a Compact C8.2 Flare Observed by Sunrise III/SUSI
Shahin Jafarzadeh, David B. Jess, Marco Stangalini +34
Magnetic oscillations permeating the solar atmosphere can be altered by flares. This could be due to changes in the atmospheric magnetic waveguide, the thermodynamic stratification…
The umbrella effect: Magnetic canopy topology modulates spatially averaged chromospheric three-minute power
Shahin Jafarzadeh, David B. Jess, Marco Stangalini +11
Three-minute (5 mHz) oscillations are a prominent signature of wave propagation in the solar chromosphere, but their measured power can vary substantially between full-disc o…
Multi-height Identification of Sausage and Fluting Eigenmodes in a Solar Pore
Shahin Jafarzadeh, David B. Jess, Marco Stangalini +34
Magnetic pores are compact, strongly magnetised waveguides in the lower solar atmosphere and therefore provide favourable conditions for identifying magnetohydrodynamic (MHD) wave…
Standing oscillations in a resonant sunspot atmosphere captured by integral field spectroscopy
Glen Chambers, David B. Jess, Shahin Jafarzadeh +8
The solar atmosphere is replete with magnetohydrodynamic wave activity, with magnetic structures such as sunspots channelling wave energy flux efficiently into the outer atmosphere…
Magnetically Structured Oscillatory Power Along an Active-Region Transect in Near-UV Sunrise-III/SUSI Spectroscopy
Shahin Jafarzadeh, David B. Jess, Marco Stangalini +33
We present a multi-line characterisation of how oscillatory power is organised across distinct magnetic environments in an active region using seeing-free, stratospheric near-ultra…
Multi-line Wave Signatures in a Sunspot from Near-UV Sunrise III/SUSI Observations
Shahin Jafarzadeh, David B. Jess, Marco Stangalini +32
Magnetohydrodynamic waves redistribute energy in magnetic structures of the lower solar atmosphere, yet constraints on how wave power and dominant frequencies are organised above s…
The Influence of Opacity on Inferred MHD Wave Signatures in the Lower Solar Atmosphere
Samuel J. Skirvin, Samuel D. T. Grant, David B. Jess +8
Magnetohydrodynamic wave activity in small-scale magnetic structures, such as solar pores, provides key insights into energy transport in the lower solar atmosphere. This study pre…
Adaptive multi-line fitting for stable line-core intensity and Doppler velocity
Shahin Jafarzadeh, David B. Jess, Marco Stangalini +5
Next-generation solar spectrographs increasingly record dense wavelength windows in which tens to hundreds of spectral lines are sampled at each spatial location and time step. Thi…
Small-scale bright point characteristics at high-resolution with the Daniel K. Inouye Solar Telescope
Peter H. Keys, Ryan J. Campbell, Dylan K. J. Magill +9
Bright points (BPs) are small-scale, dynamic features that are ubiquitous across the solar disc and are often associated with the underlying magnetic field. Using broadband photosp…
Observation of Alfvén Wave Reflection in the Solar Chromosphere: Ponderomotive Force and First Ionization Potential Effect
Mariarita Murabito, Marco Stangalini, J. Martin Laming +7
We investigate the propagation of Alfvén waves in the solar chromosphere, distinguishing between upward and downward propagating waves. We find clear evidence for the reflection of…
The temporal and spatial evolution of MHD wave modes in sunspots
A. B. Albidah, V. Fedun, A. A. Aldhafeeri +8
Through their lifetime sunspots undergo a change in their area and shape and, as they decay, they fragment into smaller structures. Here, for the first time we analyze the spatial…
An overall view of temperature oscillations in the solar chromosphere with ALMA
Shahin Jafarzadeh, Sven Wedemeyer, Bernhard Fleck +12
By direct measurements of the gas temperature, the Atacama Large Millimeter/sub-millimeter Array (ALMA) has yielded a new diagnostic tool to study the solar chromosphere. Here we p…
Proper Orthogonal and Dynamic Mode Decomposition of Sunspot Data
A. B. Albidah, W. Brevis, V. Fedun +5
High resolution solar observations show the complex structure of the magnetohydrodynamic (MHD) wave motion. We apply the techniques of POD and DMD to identify the dominant MHD wave…
Spectropolarimetric Fluctuations in a Sunspot Chromosphere
M. Stangalini, D. Baker, G. Valori +8
The instrumental advances made in this new era of 4-meter class solar telescopes with unmatched spectropolarimetric accuracy and sensitivity, will enable the study of chromospheric…
Magnetohydrodynamic Non-linearities in Sunspot Atmospheres: Chromospheric Detections of Intermediate Shocks
S. J. Houston, D. B. Jess, R. Keppens +8
The formation of shocks within the solar atmosphere remains one of the few observable signatures of energy dissipation arising from the plethora of magnetohydrodynamic waves genera…
High-resolution spectropolarimetric observations of the temporal evolution of magnetic fields in photospheric bright points
Peter H. Keys, Aaron Reid, Mihalis Mathioudakis +7
Context. Magnetic bright points (MBPs) are dynamic, small-scale magnetic elements often found with field strengths of the order of a kilogauss within intergranular lanes in the pho…
First evidence of interaction between longitudinal and transverse waves in solar magnetic elements
M. Stangalini, S. K. Solanki, R. Cameron +1
Small-scale magnetic fields are thought to play an important role in the heating of the outer solar atmosphere. By taking advantage of the unprecedented high-spatial and temporal c…