TY - JOUR T1 - Magnetohydrodynamic wave mode identification in circular and elliptical sunspot umbrae : evidence for high-order modes JO - The Astrophysical Journal UR - https://eprints.whiterose.ac.uk/id/eprint/186410 PY - 2022/03/17 AU - Albidah AB AU - Fedun V AU - Aldhafeeri AA AU - Ballai I AU - Brevis W AU - Jess DB AU - Higham J AU - Stangalini M AU - Silva SSA AU - Verth G ED - DO - DOI: 10.3847/1538-4357/ac51d9 PB - American Astronomical Society VL - 927 IS - 2 Y2 - 2025/11/03 ER -