Reconstructing 3D Magnetic Topology of On-disk Prominence Bubbles from Stereoscopic Observations
نویسندگان
چکیده
Bubbles, the semi-circular voids below quiescent prominences (filaments), have been extensively investigated in past decade. However, hitherto magnetic nature of bubbles cannot be verified due to lack on-disk photospheric field observations. Here for first time, we find and investigate an prominence bubble around a filament barb on 2019 March 18 based stereoscopic observations from NVST, SDO, STEREO-A. In high-resolution NVST H$\alpha$ images, this has sharp arch-like boundary projected width $\thicksim$26 Mm. Combining SDO STEREO-A further reconstruct 3D structure boundary, whose maximum height is $\thicksim$15.6 The squashing factor Q map deduced extrapolated fields depicts distinct arch-shaped interface with $\thicksim$11 Mm, which agrees well reconstructed observed boundary. Under lies set loops, rooted surrounding patch. To more persuasive, another June 10 presented as supplement. According these results obtained observations, suggest that corresponds between dips (barb) underlying loops nearby. It thus reasonable speculate can form there
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ژورنال
عنوان ژورنال: The astrophysical journal
سال: 2021
ISSN: ['2041-8213', '2041-8205']
DOI: https://doi.org/10.3847/2041-8213/abee92