Abstract Details


Name: Heesu Yang
Affiliation: Korea Astronomy and Space Science Institute
Conference ID: TVS202510244
Title: Hα Dark Blobs and Transparent Regions at the Fronts of Fan-Shaped Jets
Authors and Co-Authors: Maria S. Madjarska, Eun-Kyung Lim, Daniel Nóbrega-Siverio, Klaus Galsgaard
Abstract Type: Invited by SOC
Abstract: We investigated three fan-shaped jets above sunspot light bridges or nearby sunspot regions using coordinated observations from the Goode Solar Telescope, IRIS, and SDO/AIA. At the jet fronts, Hα dark blobs with underlying transparent gaps were identified. The dark blobs and the transparent regions appear bright in IRIS slit-jaw 1330 Å, 1400 Å, and AIA 304 Å, with Si IV spectra showing blue-shifts of ~16 km s⁻¹ and non-thermal velocities of up to 40 km s⁻¹. Our results likely suggest that these signatures are caused by shock waves driving the evolution of fan-shaped jets.