Coronal Magnetic Field Measurements along a Partially Erupting Filament in a Solar Flare
نویسندگان
چکیده
Magnetic flux ropes are the centerpiece of solar eruptions. Direct measurements for magnetic field crucial understanding triggering and energy release processes, yet they remain heretofore elusive. Here we report microwave imaging spectroscopy observations an M1.4-class flare that occurred on 2017 September 6, using data obtained by Expanded Owens Valley Solar Array. This event is associated with a partial eruption twisted filament observed in H{\alpha} Goode Telescope at Big Bear Observatory. The extreme ultraviolet (EUV) X-ray signatures generally consistent standard scenario eruptive flares, presence double ribbons connected bright arcade. Intriguingly, this features counterpart, whose spatial temporal evolution closely follow seen EUV. spectral properties source nonthermal gyrosynchrotron radiation. Using spatially resolved analysis, derive strength along spine, which ranges from 600-1400 Gauss its apex to legs. results agree well non-linear force-free model extrapolated pre-flare photospheric magnetogram. We conclude counterpart erupting likely due flare-accelerated electrons injected into filament-hosting rope cavity following newly reconnected lines.
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2021
ISSN: ['2041-8213', '2041-8205']
DOI: https://doi.org/10.3847/1538-4357/ac2f99