Impulse excitation and damping of slow standing mode oscillations in hot coronal loops

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Impulse excitation and damping of slow standing mode oscillations in hot coronal loops. / Taroyan, Y.; Erdélyi, R.; Doyle, J. G.

SOHO 15 Workshop: Coronal Heating. 575. ed. 2004. p. 443-447 (European Space Agency, (Special Publication) ESA SP).

Research output: Chapter in Book/Report/Conference proceeding › Conference Proceeding (Non-Journal item)

Harvard

Taroyan, Y, Erdélyi, R & Doyle, JG 2004, Impulse excitation and damping of slow standing mode oscillations in hot coronal loops. in SOHO 15 Workshop: Coronal Heating. 575 edn, European Space Agency, (Special Publication) ESA SP, pp. 443-447, SOHO 15 Workshop: Coronal Heating, United Kingdom of Great Britain and Northern Ireland, 06 Sept 2004.

APA

Taroyan, Y., Erdélyi, R., & Doyle, J. G. (2004). Impulse excitation and damping of slow standing mode oscillations in hot coronal loops. In SOHO 15 Workshop: Coronal Heating (575 ed., pp. 443-447). (European Space Agency, (Special Publication) ESA SP).

Vancouver

Taroyan Y, Erdélyi R, Doyle JG. Impulse excitation and damping of slow standing mode oscillations in hot coronal loops. In SOHO 15 Workshop: Coronal Heating. 575 ed. 2004. p. 443-447. (European Space Agency, (Special Publication) ESA SP).

Author

Taroyan, Y. ; Erdélyi, R. ; Doyle, J. G. / Impulse excitation and damping of slow standing mode oscillations in hot coronal loops. SOHO 15 Workshop: Coronal Heating. 575. ed. 2004. pp. 443-447 (European Space Agency, (Special Publication) ESA SP).

Bibtex - Download

@inproceedings{79c652649bd548db9f06314313ffc191,
title = "Impulse excitation and damping of slow standing mode oscillations in hot coronal loops",
abstract = "A new theoretical model for the study of slow standing mode oscillations in hot (T > 6 MK) active region coronal loops is presented. These oscillations are observed by the SUMER spectrometer on board the SoHO satellite. The model contains the transition region and the upper chromosphere which enables us to study the entire process of hot loop oscillations - from the impulsive footpoint excitation phase to the rapid damping phase. It is shown that the oscillations can be excited by an impulsive heat deposition due to, e.g., nonlinear Alfv{\'e}n wave energy deposition or magnetic reconnection at the chromospheric footpoint. The existence of the standing mode oscillations is determined by the duration of the heat deposition. The oscillations are excited most efficiently when the duration of the heat deposition is proportional to the fundamental period of the loop. The amount of released energy determines the oscillation amplitude. The combined effects of thermal conduction and compressive viscosity on the damping time in hot gravitationally stratified loops are much stronger than the effect of chromospheric leakage. The dynamic response of the transition region to the impulsive energy release is examined.",
keywords = "Corona, Loop oscillations, Sun",
author = "Y. Taroyan and R. Erd{\'e}lyi and Doyle, {J. G.}",
note = "Copyright: Copyright 2008 Elsevier B.V., All rights reserved.; SOHO 15 Workshop: Coronal Heating ; Conference date: 06-09-2004 Through 09-09-2004",
year = "2004",
language = "English",
series = "European Space Agency, (Special Publication) ESA SP",
pages = "443--447",
booktitle = "SOHO 15 Workshop:",
edition = "575",

}

RIS (suitable for import to EndNote) - Download

TY - GEN

T1 - Impulse excitation and damping of slow standing mode oscillations in hot coronal loops

AU - Taroyan, Y.

AU - Erdélyi, R.

AU - Doyle, J. G.

N1 - Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2004

Y1 - 2004

N2 - A new theoretical model for the study of slow standing mode oscillations in hot (T > 6 MK) active region coronal loops is presented. These oscillations are observed by the SUMER spectrometer on board the SoHO satellite. The model contains the transition region and the upper chromosphere which enables us to study the entire process of hot loop oscillations - from the impulsive footpoint excitation phase to the rapid damping phase. It is shown that the oscillations can be excited by an impulsive heat deposition due to, e.g., nonlinear Alfvén wave energy deposition or magnetic reconnection at the chromospheric footpoint. The existence of the standing mode oscillations is determined by the duration of the heat deposition. The oscillations are excited most efficiently when the duration of the heat deposition is proportional to the fundamental period of the loop. The amount of released energy determines the oscillation amplitude. The combined effects of thermal conduction and compressive viscosity on the damping time in hot gravitationally stratified loops are much stronger than the effect of chromospheric leakage. The dynamic response of the transition region to the impulsive energy release is examined.

AB - A new theoretical model for the study of slow standing mode oscillations in hot (T > 6 MK) active region coronal loops is presented. These oscillations are observed by the SUMER spectrometer on board the SoHO satellite. The model contains the transition region and the upper chromosphere which enables us to study the entire process of hot loop oscillations - from the impulsive footpoint excitation phase to the rapid damping phase. It is shown that the oscillations can be excited by an impulsive heat deposition due to, e.g., nonlinear Alfvén wave energy deposition or magnetic reconnection at the chromospheric footpoint. The existence of the standing mode oscillations is determined by the duration of the heat deposition. The oscillations are excited most efficiently when the duration of the heat deposition is proportional to the fundamental period of the loop. The amount of released energy determines the oscillation amplitude. The combined effects of thermal conduction and compressive viscosity on the damping time in hot gravitationally stratified loops are much stronger than the effect of chromospheric leakage. The dynamic response of the transition region to the impulsive energy release is examined.

KW - Corona

KW - Loop oscillations

KW - Sun

UR - http://www.scopus.com/inward/record.url?scp=22144442465&partnerID=8YFLogxK

M3 - Conference Proceeding (Non-Journal item)

AN - SCOPUS:22144442465

T3 - European Space Agency, (Special Publication) ESA SP

SP - 443

EP - 447

BT - SOHO 15 Workshop:

T2 - SOHO 15 Workshop: Coronal Heating

Y2 - 6 September 2004 through 9 September 2004

ER -

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