The unresolved fine structure resolved: IRIS observations of the solar transition region-Reference-Cited by-同舟云学术

The unresolved fine structure resolved: IRIS observations of the solar transition region

Published:2014-10-17 Issue:6207 Volume:346 Page:
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Hansteen V.¹,De Pontieu B.¹²,Carlsson M.¹,Lemen J.²,Title A.²,Boerner P.²,Hurlburt N.²,Tarbell T. D.²,Wuelser J. P.²,Pereira T. M. D.¹,De Luca E. E.³,Golub L.³,McKillop S.³,Reeves K.³,Saar S.³,Testa P.³,Tian H.³,Kankelborg C.⁴,Jaeggli S.⁴,Kleint L.²⁵,Martínez-Sykora J.²⁵

Affiliation:

1. Institute of Theoretical Astrophysics, University of Oslo, Post Office Box 1029, Blindern, NO-0315, Oslo, Norway.

2. Lockheed Martin Solar and Astrophysics Laboratory, 3251 Hanover Street, Org. A021S, Building 252, Palo Alto, CA 94304, USA.

3. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA.

4. Department of Physics, Montana State University, Bozeman, Post Office Box 173840, Bozeman, MT 59717, USA.

5. Bay Area Environmental Research Institute, 596 1st Street West, Sonoma, CA 95476, USA.

Abstract

The heating of the outer solar atmospheric layers, i.e., the transition region and corona, to high temperatures is a long-standing problem in solar (and stellar) physics. Solutions have been hampered by an incomplete understanding of the magnetically controlled structure of these regions. The high spatial and temporal resolution observations with the Interface Region Imaging Spectrograph (IRIS) at the solar limb reveal a plethora of short, low-lying loops or loop segments at transition-region temperatures that vary rapidly, on the time scales of minutes. We argue that the existence of these loops solves a long-standing observational mystery. At the same time, based on comparison with numerical models, this detection sheds light on a critical piece of the coronal heating puzzle.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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