[논문]A STUDY OF SMALL FLARES ASSOCIATED WITH PLASMA BLOBS OUTFLOWING ALONG POST-CME RAYS

Kim, Yoo Jung; Kwon, Ryun-Young; Chae, Jongchul

doi:10.5303/jkas.2020.53.1.1

[국내논문] A STUDY OF SMALL FLARES ASSOCIATED WITH PLASMA BLOBS OUTFLOWING ALONG POST-CME RAYS 원문보기

Journal of the Korean astronomical society = 천문학회지, v.53 no.1, 2020년, pp.1 - 7

Kim, Yoo Jung (Department of Physics and Astronomy, Seoul National University) , Kwon, Ryun-Young (Solar and Space Weather Group, Korea Astronomy and Space Science Institute) , Chae, Jongchul (Department of Physics and Astronomy, Seoul National University)

Abstract ▼ AI-Helper

The recent study of Chae et al. (2017) found a one-to-one correspondence between plasma blobs outflowing along a ray formed after a coronal mass ejection (CME) and small X-ray flares. In the present work, we have examined the spatial configuration and the eruption process of the flares that are associated with the blobs by analyzing EUV images and magnetograms taken by the SDO/AIA and HMI. We found that the main flare and the successive small flares took place in a quadrupolar magnetic configuration characterized by predominant magnetic fields of positive polarity, two minor magnetic fragments of negative polarity, and a curved polarity inversion line between them, which suggests that the formation process of the blobs may be similar to that of the parent CME. We also found that the successive flares resulted in a gradual change of the quadrupolar magnetic configuration, and the relevant migration of flaring kernels. The three-dimensional geometry and the property of the current sheet, that is often supposed to be embedded in an observed post-CME ray, seem to keep changing because of mutual feedback between the successive flares and the temporal change of the magnetic field configuration. Our results suggest that the observed post-CME rays may not reflect the characteristics of the current sheet responsible for the impulsive phase of the flare.

Keyword

표/그림 (5)

표 Table 1 Features identified from the coronagraph observations and the EUV flares.
그림 Figure 1. Left: The AIA 131Å image of AR11850 taken on September 21, 2013 at the time of the main flare. The diamond marks the location of the flare associated with feature 4. Center: Magnied view of the region where the main flare occurred. Right: SDO/HMI line-of-sight magnetogram of the same region.
그림 Figure 2. Upper eight images: SDO/HMI magnetograms at different epochs during the main flare. Lower eight images: AIA 131Å images and AIA 1600Å contours (in red) at the same epochs. Bottom diagram: The EUV light curves for the two wavelengths.
그림 Figure 3. Left: Magnetograms and EUV images of subflares 1 to 3 at different epochs. Right: EUV light curves of the same flares.
그림 Figure 4. Same as Figure 3, but for subflares 4 to 6.

AI 본문요약
AI-Helper

* AI 자동 식별 결과로 적합하지 않은 문장이 있을 수 있으니, 이용에 유의하시기 바랍니다.

제안 방법

(2016). They studied two CMEs associated with two successive C-class flares observed on 21 September 2013 that were followed by several rays on the COR2 image of the STEREO Behind. It was found that the major ray was coaxial with the CME as expected, and had a cross section of 0.
In this study, we investigate the development and magnetic configuration of the main flare and the subsequent small flares that are associated with the CME and the blobs studied by Chae et al. (2017), by examining the EUV images and magnetograms. This investigation allows us to correlate the blobs and outflows in the high corona region with the processes in the low corona region not only temporally but also spatially.
(2017), by examining the EUV images and magnetograms. This investigation allows us to correlate the blobs and outflows in the high corona region with the processes in the low corona region not only temporally but also spatially. Previously, there have been several studies of the low region of the current sheet (formed after CME) by observing in EUV or X-ray wavelengths (Forbes & Acton 1996; Lin et al.
2010). These studies showed the existence of structures like current sheets, cusp-shaped flare loops, and plasma inflows. However, no clear connection has been made yet between such phenomena in the low corona, and blobs observed in the high corona with coronagraphs.

참고문헌 (18)

Chae, J., Cho, K., Kwon, R.-Y., & Lim, E.-K. 2017, Evidence for a Magnetic Reconnection Origin of Plasma Out ows along Post-CME Rays, ApJ, 841, 49

상세보기
Forbes, T. G. & Acton, L. W. 1996, Reconnection and Field Line Shrinkage in Solar Flares, ApJ, 459, 330

상세보기
Ko, Y.-K., Raymond, J. C., Lin, J., et al. 2003, Dynamical and Physical Properties of a Post-Coronal Mass Ejection Current Sheet, ApJ, 594, 1068

상세보기
Kwon, R.-Y., Vourlidas, A., & Webb, D. 2016, Three-dimensional Geometry of a Current Sheet in the High Solar Corona: Evidence for Reconnection in the Late Stage of the Coronal Mass Ejections, ApJ, 826, 94

상세보기
Lemen, J. R., Title, A. M., Akin, D. J., et al. 2012, The Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory (SDO), Sol. Phys., 275, 17

상세보기
Lin, J. & Forbes, T. G. 2000, Effects of Reconnection on the Coronal Mass Ejection Process, J. Geophys. Research, 105, 2375

상세보기
Lin, J., Ko, Y.-K., Sui, L., et al. 2005, Direct Observations of the Magnetic Reconnection Site of an Eruption on 2003 November 18, ApJ, 622, 1251

상세보기
Lin, J., Murphy, N. A., Shen, C., et al. 2015, Review on Current Sheets in CME Development: Theories and Observations, Space Sci. Rev., 194, 237

상세보기
Litvinenko, Y. E. 1996, Particle Acceleration in Reconnecting Current Sheets with a Nonzero Magnetic Field, ApJ, 462, 997

상세보기
Pesnell, W. D., Thompson, B. J., & Chamberlin, P. C. 2012, The Solar Dynamics Observatory (SDO), Sol. Phys., 275, 3

상세보기
Riley, P., Lionello, R., Mikic, Z., et al. 2007, "Bursty" Reconnection Following Solar Eruptions: MHD Simulations and Comparison with Observations, ApJ, 655, 591

상세보기
Savage, S. L., McKenzie, D. E., Reeves, K. K., et al. 2010, Reconnection Outflows and Current Sheet Observed with Hinode/XRT in the 2008 April 9 "Cartwheel CME" Flare, ApJ, 722, 329

상세보기
Schou, J., Scherrer, P. H., Bush, R. I., et al. 2012, Design and Ground Calibration of the Helioseismic and Magnetic Imager (HMI) Instrument on the Solar Dynamics Observatory (SDO), Sol. Phys., 275, 229

상세보기
Shen, C., Lin, J., & Murphy, N. A. 2011, Numerical Experiments on Fine Structure within Reconnecting Current Sheets in Solar Flares, ApJ, 737, 14

상세보기
Vrsnak, B., Poletto, G., Vujic, E., et al. 2009, Morphology and Density Structure of Post-CME Current Sheets, A&A, 499, 905

상세보기
Webb, D. F., Burkepile, J., Forbes, T. G., & Riley, P. 2003, Observational Evidence of New Current Sheets Trailing Coronal Mass Ejections, J. Geophys. Research, 108, 1440

상세보기
Webb, D. F. & Vourlidas, A. 2016, LASCO White-Light Observations of Eruptive Current Sheets Trailing CMEs, Sol. Phys. 291, 3725

상세보기
Wood, P. & Neukirch, T. 2005, Electron Acceleration in Reconnecting Current Sheets, Sol. Phys., 226, 73

상세보기

LOADING...

활용도 분석정보

상세보기

다운로드

내보내기

활용도 Top5 논문

해당 논문의 주제분야에서 활용도가 높은 상위 5개 콘텐츠를 보여줍니다.
더보기 버튼을 클릭하시면 더 많은 관련자료를 살펴볼 수 있습니다.

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 논문명, 저널/프로시딩명, 저자 , 발행년, 권, 호, 시작페이지, 끝페이지, 발행기관 관리번호, 논문명, 대등논문명, 저자 , 저널/프로시딩명, 발행기관, 발행년, 발행언어, 권, 호, 시작페이지, 끝페이지, ISBN, ISSN, 주제분야, 키워드, 초록(한글), 초록(영문), 저자(소속기관)
저장형식	Text(ASCII format) Excel format RefWorks Direct Export RIS format (for Reference Manager, ProCite, EndNote), Scholar's Aids, Mendeley
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증