Active region transient events observed with TRACE

Document Type

Article

Publication Date

12-20-2001

Abstract

Nearly all active region observations made by the Transition Region and Coronal Explorer (TRACE) contain seemingly spontaneous, short-lived brightenings in small-scale loops. In this paper, we present an analysis of these brightenings using high-cadence TRACE observations of Active Region 9506 on 2001 June 21 from 15:17:00 to 15:46:00 UT. During this time frame, several brightenings were observed over a neutral line in a region of emerging flux that had intensity signatures in both the 171 Å (log Te ≈ 6.0) and 1600 Å(log Te ≈ 4.0-5.0) channels. The events had a cross-sectional diameter of approximately 2″ and a length of 25″. We interpret these as reconnection events associated with flux emergence, possible EUV counterparts to active region transient brightenings.

Identifier

0039248862 (Scopus)

Publication Title

Astrophysical Journal

External Full Text Location

https://doi.org/10.1086/338737

e-ISSN

15384357

ISSN

0004637X

First Page

L173

Last Page

L177

Issue

2 PART 2

Volume

563

Fund Ref

National Aeronautics and Space Administration

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