NDLI: What causes solar active region loops to exist at transition region temperatures?

Content Provider	Springer Nature Link
Author	Harra, Louise K. Mandrini, Cristine H. Matthews, Sarah A.
Copyright Year	2004
Abstract	High-lying, dynamic loops have been observed at transition region temperatures since Skylab observations. The nature of these loops has been debated for many years with several explanations having been put forward. These include that the loops are merely cooling from hotter coronal loops, that they are produced from siphon flows, or that they are loops heated only to transition region temperatures. In this paper we will make use of combined SOHO-MDI (Michelson-Doppler Imager), SOHO-CDS (Coronal Diagnostic Spectrometer) and Yohkoh SXT (Soft X-ray Telescope) datasets in order to determine whether the appearance of transition region loops is related to small-scale flaring in the corona, and to estimate the magnetic configuration of the loops. The latter allows us to determine the direction of plasma flows in the transition region loops. We find that the appearance of the transition region loops is often related to small-scale flaring in the corona and in this case the transition region loops appear to be cooling with material draining down from the loop top.
Starting Page	57
Ending Page	76
Page Count	20
File Format	PDF
ISSN	00380938
Journal	Solar Physics
Volume Number	223
Issue Number	1
e-ISSN	1573093X
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2004-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Astrophysics
Content Type	Text
Resource Type	Article
Subject	Astronomy and Astrophysics Space and Planetary Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Transition-Region Blinkers – II. Active-Region Properties

Waves in the solar transition region

RADIO MAPS OF THE SOLAR WIND TRANSITION REGION

Characteristics of active-region sources of solar wind near solar maximum

The Nature of Blinkers and the Solar Transition Region

The Solar Quiet Chromosphere—Corona Transition Region

Evidence of Energy Supply by Active-Region Spicules to the Solar Atmosphere

Counter-streaming Mass Flow and Transient Brightening in Active Region Loops

Plasma Beta above a Solar Active Region: Rethinking the Paradigm

What causes solar active region loops to exist at transition region temperatures?

Similar Documents

Transition-Region Blinkers – II. Active-Region Properties

Waves in the solar transition region

RADIO MAPS OF THE SOLAR WIND TRANSITION REGION

Characteristics of active-region sources of solar wind near solar maximum

The Nature of Blinkers and the Solar Transition Region

The Solar Quiet Chromosphere—Corona Transition Region

Evidence of Energy Supply by Active-Region Spicules to the Solar Atmosphere

Counter-streaming Mass Flow and Transient Brightening in Active Region Loops

Plasma Beta above a Solar Active Region: Rethinking the Paradigm

What causes solar active region loops to exist at transition region temperatures?