MHD;
Sun : corona;
Sun : magnetic fields;
Sun : transition region;
D O I:
10.1086/341600
中图分类号:
P1 [天文学];
学科分类号:
0704 ;
摘要:
The heating of the solar corona and the puzzle of the slender high reaching magnetic loops seen in observations from the Transition Region and Coronal Explorer (TRACE) has been investigated through three-dimensional numerical simulations and found to be caused by the well-observed plasma flows in the photosphere displacing the footpoints of magnetic loops in a nearly potential configuration. It is found that even the small convective displacements cause magnetic dissipation sufficient to heat the corona to temperatures of the order of a million K. The heating is intermittent in both space and time-at any one height and time it spans several orders of magnitude, and localized heating causes transonic flows along field lines, which explains the observed nonhydrostatic stratification of loops that are bright in emission measure.
机构:
Lockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L9 41, Palo Alto, CA 94304 USALockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L9 41, Palo Alto, CA 94304 USA
Aschwanden, MJ
;
Nightingale, RW
论文数: 0引用数: 0
h-index: 0
机构:
Lockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L9 41, Palo Alto, CA 94304 USALockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L9 41, Palo Alto, CA 94304 USA
Nightingale, RW
;
Alexander, D
论文数: 0引用数: 0
h-index: 0
机构:
Lockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L9 41, Palo Alto, CA 94304 USALockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L9 41, Palo Alto, CA 94304 USA
机构:
Lockheed Martin Adv Technol Ctr, Dept L9 41, Solar & Astrophys Lab, Palo Alto, CA 94304 USALockheed Martin Adv Technol Ctr, Dept L9 41, Solar & Astrophys Lab, Palo Alto, CA 94304 USA
机构:
Lockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L941, Palo Alto, CA 94304 USALockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L941, Palo Alto, CA 94304 USA
Aschwanden, MJ
;
Schrijver, CJ
论文数: 0引用数: 0
h-index: 0
机构:
Lockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L941, Palo Alto, CA 94304 USALockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L941, Palo Alto, CA 94304 USA
Schrijver, CJ
;
Alexander, D
论文数: 0引用数: 0
h-index: 0
机构:
Lockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L941, Palo Alto, CA 94304 USALockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L941, Palo Alto, CA 94304 USA
机构:
Lockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L9 41, Palo Alto, CA 94304 USALockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L9 41, Palo Alto, CA 94304 USA
Aschwanden, MJ
;
Nightingale, RW
论文数: 0引用数: 0
h-index: 0
机构:
Lockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L9 41, Palo Alto, CA 94304 USALockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L9 41, Palo Alto, CA 94304 USA
Nightingale, RW
;
Alexander, D
论文数: 0引用数: 0
h-index: 0
机构:
Lockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L9 41, Palo Alto, CA 94304 USALockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L9 41, Palo Alto, CA 94304 USA
机构:
Lockheed Martin Adv Technol Ctr, Dept L9 41, Solar & Astrophys Lab, Palo Alto, CA 94304 USALockheed Martin Adv Technol Ctr, Dept L9 41, Solar & Astrophys Lab, Palo Alto, CA 94304 USA
机构:
Lockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L941, Palo Alto, CA 94304 USALockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L941, Palo Alto, CA 94304 USA
Aschwanden, MJ
;
Schrijver, CJ
论文数: 0引用数: 0
h-index: 0
机构:
Lockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L941, Palo Alto, CA 94304 USALockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L941, Palo Alto, CA 94304 USA
Schrijver, CJ
;
Alexander, D
论文数: 0引用数: 0
h-index: 0
机构:
Lockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L941, Palo Alto, CA 94304 USALockheed Martin Adv Technol Ctr, Solar & Astrophys Lab, Dept L941, Palo Alto, CA 94304 USA