publication . Article . Other literature type . Preprint . 2016

spectroscopic diagnostics of solar magnetic flux ropes using iron forbidden line

Cheng, X.; Ding, M. D.;
Open Access
  • Published: 12 May 2016 Journal: The Astrophysical Journal, volume 823, page L4 (eissn: 2041-8213, Copyright policy)
  • Publisher: American Astronomical Society
Abstract
In this Letter, we present Interface Region Imaging Spectrograph Fe XXI 1354.08 A forbidden line emission of two magnetic flux ropes (MFRs) that caused two fast coronal mass ejections with velocities of $\ge$1000 km s$^{-1}$ and strong flares (X1.6 and M6.5) on 2014 September 10 and 2015 June 22, respectively. The EUV images at the 131 A and 94 A passbands provided by the Atmospheric Imaging Assembly on board Solar Dynamics Observatory reveal that both MFRs initially appear as suspended hot channel-like structures. Interestingly, part of the MFRs is also visible in the Fe XXI 1354.08 forbidden line, even prior to the eruption, e.g., for the SOL2014-09-10 event. ...
Subjects
free text keywords: Space and Planetary Science, Astronomy and Astrophysics, Blueshift, Forbidden mechanism, Physics, Magnetic reconnection, Astrophysics, Flux, Critical point (thermodynamics), Spectrograph, Magnetic flux, Astronomy, Coronal mass ejection, Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics, Physics - Space Physics
Related Organizations
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publication . Article . Other literature type . Preprint . 2016

spectroscopic diagnostics of solar magnetic flux ropes using iron forbidden line

Cheng, X.; Ding, M. D.;