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- W3102765446 endingPage "L45" @default.
- W3102765446 startingPage "L45" @default.
- W3102765446 abstract "We examine Big Bear Solar Observatory (BBSO) Goode Solar Telescope (GST) high spatial resolution (0.″06), high-cadence (3.45 s), Hα-0.8 Å images of central-disk solar spicules, using data of Samanta et al. We compare with coronal-jet chromospheric-component observations of Sterling et al. Morphologically, bursts of spicules, referred to as “enhanced spicular activities” by Samanta et al., appear as scaled-down versions of the jet’s chromospheric component. Both the jet and the enhanced spicular activities appear as chromospheric-material strands, undergoing twisting-type motions of ∼20–50 km s−1 in the jet and ∼20–30 km s−1 in the enhanced spicular activities. Presumably, the jet resulted from a minifilament-carrying magnetic eruption. For two enhanced spicular activities that we examine in detail, we find tentative candidates for corresponding erupting microfilaments, but not the expected corresponding base brightenings. Nonetheless, the enhanced-spicular-activities’ interacting mixed-polarity base fields, frequent-apparent-twisting motions, and morphological similarities to the coronal jet’s chromospheric-temperature component, suggest that erupting microfilaments might drive the enhanced spicular activities but be hard to detect, perhaps due to Hα opacity. Degrading the BBSO/GST-image resolution with a 1.″0-FWHM smoothing function yields enhanced spicular activities resembling the “classical spicules” described by, e.g., Beckers. Thus, a microfilament eruption might be the fundamental driver of many spicules, just as a minifilament eruption is the fundamental driver of many coronal jets. Similarly, a 0.″5-FWHM smoothing renders some enhanced spicular activities to resemble previously reported “twinned” spicules, while the full-resolution features might account for spicules sometimes appearing as 2D-sheet-like structures." @default.
- W3102765446 created "2020-11-23" @default.
- W3102765446 creator A5006823671 @default.
- W3102765446 creator A5036071128 @default.
- W3102765446 creator A5051547058 @default.
- W3102765446 creator A5052995056 @default.
- W3102765446 date "2020-04-23" @default.
- W3102765446 modified "2023-09-30" @default.
- W3102765446 title "Possible Production of Solar Spicules by Microfilament Eruptions" @default.
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