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Title: OBSERVING EPISODIC CORONAL HEATING EVENTS ROOTED IN CHROMOSPHERIC ACTIVITY

Abstract

We present the results of a multi-wavelength study of episodic plasma injection into the corona of active region (AR) 10942. We exploit long-exposure images of the Hinode and Transition Region and Coronal Explorer spacecraft to study the properties of faint, episodic, 'blobs' of plasma that are propelled upward along coronal loops that are rooted in the AR plage. We find that the source location and characteristic velocities of these episodic upflow events match those expected from recent spectroscopic observations of faint coronal upflows that are associated with upper chromospheric activity, in the form of highly dynamic spicules. The analysis presented ties together observations from coronal and chromospheric spectrographs and imagers, providing more evidence of the connection of discrete coronal mass heating and injection events with their source, dynamic spicules, in the chromosphere.

Authors:
 [1];  [2]
  1. High Altitude Observatory, National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307 (United States)
  2. Lockheed Martin Solar and Astrophysics Lab, 3251 Hanover Street, Org. ADBS, Bldg. 252, Palo Alto, CA 94304 (United States)
Publication Date:
OSTI Identifier:
21378188
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal (Online)
Additional Journal Information:
Journal Volume: 706; Journal Issue: 1; Other Information: DOI: 10.1088/0004-637X/706/1/L80; Journal ID: ISSN 1538-4357
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CHROMOSPHERE; HEATING; MAGNETIC FIELDS; PLASMA; SOLAR PROMINENCES; SUN; VELOCITY; WAVELENGTHS; ATMOSPHERES; MAIN SEQUENCE STARS; SOLAR ACTIVITY; SOLAR ATMOSPHERE; STARS; STELLAR ACTIVITY; STELLAR ATMOSPHERES

Citation Formats

McIntosh, Scott W., and De Pontieu, Bart, E-mail: mscott@ucar.ed, E-mail: bdp@lmsal.co. OBSERVING EPISODIC CORONAL HEATING EVENTS ROOTED IN CHROMOSPHERIC ACTIVITY. United States: N. p., 2009. Web. doi:10.1088/0004-637X/706/1/L80.
McIntosh, Scott W., & De Pontieu, Bart, E-mail: mscott@ucar.ed, E-mail: bdp@lmsal.co. OBSERVING EPISODIC CORONAL HEATING EVENTS ROOTED IN CHROMOSPHERIC ACTIVITY. United States. doi:10.1088/0004-637X/706/1/L80.
McIntosh, Scott W., and De Pontieu, Bart, E-mail: mscott@ucar.ed, E-mail: bdp@lmsal.co. Fri . "OBSERVING EPISODIC CORONAL HEATING EVENTS ROOTED IN CHROMOSPHERIC ACTIVITY". United States. doi:10.1088/0004-637X/706/1/L80.
@article{osti_21378188,
title = {OBSERVING EPISODIC CORONAL HEATING EVENTS ROOTED IN CHROMOSPHERIC ACTIVITY},
author = {McIntosh, Scott W. and De Pontieu, Bart, E-mail: mscott@ucar.ed, E-mail: bdp@lmsal.co},
abstractNote = {We present the results of a multi-wavelength study of episodic plasma injection into the corona of active region (AR) 10942. We exploit long-exposure images of the Hinode and Transition Region and Coronal Explorer spacecraft to study the properties of faint, episodic, 'blobs' of plasma that are propelled upward along coronal loops that are rooted in the AR plage. We find that the source location and characteristic velocities of these episodic upflow events match those expected from recent spectroscopic observations of faint coronal upflows that are associated with upper chromospheric activity, in the form of highly dynamic spicules. The analysis presented ties together observations from coronal and chromospheric spectrographs and imagers, providing more evidence of the connection of discrete coronal mass heating and injection events with their source, dynamic spicules, in the chromosphere.},
doi = {10.1088/0004-637X/706/1/L80},
journal = {Astrophysical Journal (Online)},
issn = {1538-4357},
number = 1,
volume = 706,
place = {United States},
year = {2009},
month = {11}
}