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Title: INTERACTION OF TWO FILAMENT CHANNELS OF DIFFERENT CHIRALITIES

Abstract

We present observations of the interactions between the two filament channels of different chiralities and associated dynamics that occurred during 2014 April 18–20. While two flux ropes of different helicity with parallel axial magnetic fields can only undergo a bounce interaction when they are brought together, the observations at first glance show that the heated plasma is moving from one filament channel to the other. The SDO /AIA 171 Å observations and the potential-field source-surface magnetic field extrapolation reveal the presence of a fan-spine magnetic configuration over the filament channels with a null point located above them. Three different events of filament activations, partial eruptions, and associated filament channel interactions have been observed. The activation initiated in one filament channel seems to propagate along the neighboring filament channel. We believe that the activation and partial eruption of the filaments brings the field lines of flux ropes containing them closer to the null point and triggers the magnetic reconnection between them and the fan-spine magnetic configuration. As a result, the hot plasma moves along the outer spine line toward the remote point. Utilizing the present observations, for the first time we have discussed how two different-chirality filament channels can interact andmore » show interrelation.« less

Authors:
; ;  [1];  [2];  [3];  [4]
  1. School of Space Research, Kyung Hee University, Yongin, Gyeonggi-Do, 446-701 (Korea, Republic of)
  2. Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of the Russian Academy of Sciences (IZMIRAN), Troitsk, Moscow 142190 (Russian Federation)
  3. LESIA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, Univ. Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, F-92195 Meudon (France)
  4. Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital 263 002, Uttarakhand (India)
Publication Date:
OSTI Identifier:
22666281
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 825; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; EXTRAPOLATION; HOT PLASMA; INTERACTIONS; MAGNETIC FIELDS; MAGNETIC RECONNECTION; STELLAR FLARES; SUN; SURFACES; VERTEBRAE

Citation Formats

Joshi, Navin Chandra, Magara, Tetsuya, Moon, Yong-Jae, Filippov, Boris, Schmieder, Brigitte, and Uddin, Wahab, E-mail: navin@khu.ac.kr, E-mail: njoshi98@gmail.com. INTERACTION OF TWO FILAMENT CHANNELS OF DIFFERENT CHIRALITIES. United States: N. p., 2016. Web. doi:10.3847/0004-637X/825/2/123.
Joshi, Navin Chandra, Magara, Tetsuya, Moon, Yong-Jae, Filippov, Boris, Schmieder, Brigitte, & Uddin, Wahab, E-mail: navin@khu.ac.kr, E-mail: njoshi98@gmail.com. INTERACTION OF TWO FILAMENT CHANNELS OF DIFFERENT CHIRALITIES. United States. doi:10.3847/0004-637X/825/2/123.
Joshi, Navin Chandra, Magara, Tetsuya, Moon, Yong-Jae, Filippov, Boris, Schmieder, Brigitte, and Uddin, Wahab, E-mail: navin@khu.ac.kr, E-mail: njoshi98@gmail.com. Sun . "INTERACTION OF TWO FILAMENT CHANNELS OF DIFFERENT CHIRALITIES". United States. doi:10.3847/0004-637X/825/2/123.
@article{osti_22666281,
title = {INTERACTION OF TWO FILAMENT CHANNELS OF DIFFERENT CHIRALITIES},
author = {Joshi, Navin Chandra and Magara, Tetsuya and Moon, Yong-Jae and Filippov, Boris and Schmieder, Brigitte and Uddin, Wahab, E-mail: navin@khu.ac.kr, E-mail: njoshi98@gmail.com},
abstractNote = {We present observations of the interactions between the two filament channels of different chiralities and associated dynamics that occurred during 2014 April 18–20. While two flux ropes of different helicity with parallel axial magnetic fields can only undergo a bounce interaction when they are brought together, the observations at first glance show that the heated plasma is moving from one filament channel to the other. The SDO /AIA 171 Å observations and the potential-field source-surface magnetic field extrapolation reveal the presence of a fan-spine magnetic configuration over the filament channels with a null point located above them. Three different events of filament activations, partial eruptions, and associated filament channel interactions have been observed. The activation initiated in one filament channel seems to propagate along the neighboring filament channel. We believe that the activation and partial eruption of the filaments brings the field lines of flux ropes containing them closer to the null point and triggers the magnetic reconnection between them and the fan-spine magnetic configuration. As a result, the hot plasma moves along the outer spine line toward the remote point. Utilizing the present observations, for the first time we have discussed how two different-chirality filament channels can interact and show interrelation.},
doi = {10.3847/0004-637X/825/2/123},
journal = {Astrophysical Journal},
issn = {0004-637X},
number = 2,
volume = 825,
place = {United States},
year = {2016},
month = {7}
}