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| Format: | Preprint |
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2025
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| Accès en ligne: | https://arxiv.org/abs/2507.12746 |
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| _version_ | 1866908454043516928 |
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| author | Pan, W. W. Zhang, Q. M. Qiu, Y. |
| author_facet | Pan, W. W. Zhang, Q. M. Qiu, Y. |
| contents | In this paper, we carry out multiwavelength observations of simultaneous longitudinal and transverse oscillations of a quiescent filament excited by an extreme-ultraviolet (EUV) wave on 2023 February 17. A hot channel eruption generates an X2.3 class flare and a fast coronal mass ejection (CME) in active region (AR) NOAA 13229 close to the eastern limb. The CME drives an EUV wave, which propagates westward at a speed of ~459 km s-1. After arriving at the filament ~340.3 Mm away from the flare site, the filament is disturbed and starts large-amplitude oscillations, which are mainly observed in 171 Å.The longitudinal oscillations last for nearly two cycles. The average initial amplitude, velocity, period, and damping time are ~4.7 Mm, ~26.5 km s-1, ~1099.1 s, and ~2760.3 s, respectively. According to the pendulum model, the curvature radius and minimum horizontal magnetic field strength of the dips are estimated to be 6.7-9.9 Mm and 4.6-5.6 G. The transverse oscillations last for 2-3 cycles. The average initial amplitude, velocity, period, and damping time are ~1.8 Mm, ~11.2 km s-1, ~994.4 s, and ~3576.2 s, respectively. The radial magnetic field strength of the dips are estimated to be 6.6-7.4 G. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_12746 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Large-amplitude Oscillations of a Quiescent Filament Excited by an Extreme-ultravioletWave Pan, W. W. Zhang, Q. M. Qiu, Y. Solar and Stellar Astrophysics In this paper, we carry out multiwavelength observations of simultaneous longitudinal and transverse oscillations of a quiescent filament excited by an extreme-ultraviolet (EUV) wave on 2023 February 17. A hot channel eruption generates an X2.3 class flare and a fast coronal mass ejection (CME) in active region (AR) NOAA 13229 close to the eastern limb. The CME drives an EUV wave, which propagates westward at a speed of ~459 km s-1. After arriving at the filament ~340.3 Mm away from the flare site, the filament is disturbed and starts large-amplitude oscillations, which are mainly observed in 171 Å.The longitudinal oscillations last for nearly two cycles. The average initial amplitude, velocity, period, and damping time are ~4.7 Mm, ~26.5 km s-1, ~1099.1 s, and ~2760.3 s, respectively. According to the pendulum model, the curvature radius and minimum horizontal magnetic field strength of the dips are estimated to be 6.7-9.9 Mm and 4.6-5.6 G. The transverse oscillations last for 2-3 cycles. The average initial amplitude, velocity, period, and damping time are ~1.8 Mm, ~11.2 km s-1, ~994.4 s, and ~3576.2 s, respectively. The radial magnetic field strength of the dips are estimated to be 6.6-7.4 G. |
| title | Large-amplitude Oscillations of a Quiescent Filament Excited by an Extreme-ultravioletWave |
| topic | Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2507.12746 |