On the prevalence of small-scale twist in the solar chromosphere and transition region

被引：124

作者：

De Pontieu, B. ^{[1
,2
]}

van der Voort, L. Rouppe ^{[2
]}

McIntosh, S. W. ^{[3
]}

Pereira, T. M. D. ^{[2
]}

Carlsson, M. ^{[2
]}

Hansteen, V. ^{[2
]}

Skogsrud, H. ^{[2
]}

Lemen, J. ^{[1
]}

Title, A. ^{[1
]}

Boerner, P. ^{[1
]}

Hurlburt, N. ^{[1
]}

Tarbell, T. D. ^{[1
]}

Wuelser, J. P. ^{[1
]}

De Luca, E. E. ^{[4
]}

Golub, L. ^{[4
]}

McKillop, S. ^{[4
]}

Reeves, K. ^{[4
]}

Saar, S. ^{[4
]}

Testa, P. ^{[4
]}

Tian, H. ^{[4
]}

Kankelborg, C. ^{[5
]}

Jaeggli, S. ^{[5
]}

Kleint, L. ^{[6
]}

Martinez-Sykora, J. ^{[6
]}

机构：

[1] LMSAL, 3251 Hanover St,Org A021S,Bldg 252, Palo Alto, CA 94304 USA

[2] Univ Oslo, Inst Theoret Astrophys, N-0315 Oslo, Norway

[3] Natl Ctr Atmospher Res, High Altitude Observ, Boulder, CO 80307 USA

[4] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[5] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA

[6] Bay Area Environm Res Inst, Sonoma, CA 95476 USA

来源：

SCIENCE | 2014年 / 346卷 / 6207期

基金：

欧洲研究理事会;

关键词：

ALFVENIC WAVES; CORONA; ENERGY; ATMOSPHERE; DRIVEN; POWER; WIND; IRIS;

D O I：

10.1126/science.1255732

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The solar chromosphere and transition region (TR) form an interface between the Sun's surface and its hot outer atmosphere. There, most of the nonthermal energy that powers the solar atmosphere is transformed into heat, although the detailed mechanism remains elusive. High-resolution (0.33-arc second) observations with NASA's Interface Region Imaging Spectrograph (IRIS) reveal a chromosphere and TR that are replete with twist or torsional motions on sub-arc second scales, occurring in active regions, quiet Sun regions, and coronal holes alike. We coordinated observations with the Swedish 1-meter Solar Telescope (SST) to quantify these twisting motions and their association with rapid heating to at least TR temperatures. This view of the interface region provides insight into what heats the low solar atmosphere.

引用

页数：4

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