Doppler oscillations in hot coronal loops

W. Curdt; T. J. Wang; D. E. Innes; S. K. Solanki; I. E. Dammasch; B. Kliem; L. Ofman

Doppler oscillations in hot coronal loops

W. Curdt
, T. J. Wang
, D. E. Innes
, S. K. Solanki
, I. E. Dammasch
, B. Kliem
, L. Ofman

Research output: Contribution to journal › Conference article › peer-review

2 Citations (Scopus)

Abstract

Recently, a new kind of damped oscillations of hot coronal loops was revealed by the Solar Ultraviolet Measurements of Emitted Radiation (SUMER) spectrometer on SOHO. Such events seem to be a common feature observed in active region loops, seen very often when these lines brighten. The oscillations always have an impulsive trigger and are strongly damped while they cool down. However, in lines formed at coronal temperatures of ≈2 MK never any signature of these oscillations has been observed. In this study, we present the main properties of Doppler oscillations derived from a statistical study of 17 flare-like events, and a comparison with TRACE transverse loop oscillations. We also discuss the oscillation modes and their damping mechanism.

Original language	English
Pages (from-to)	581-584
Number of pages	4
Journal	European Space Agency, (Special Publication) ESA SP
Issue number	506 II
Publication status	Published - Dec 2002
Event	The 10th European Solar Physics Meeting; Solar Variability: From Core to Outer Frontiers - Prague, Czech Republic Duration: 9 Sept 2002 → 14 Sept 2002

Cite this

@article{dd230bdf067448fea3f77b51abadf70e,

title = "Doppler oscillations in hot coronal loops",

abstract = "Recently, a new kind of damped oscillations of hot coronal loops was revealed by the Solar Ultraviolet Measurements of Emitted Radiation (SUMER) spectrometer on SOHO. Such events seem to be a common feature observed in active region loops, seen very often when these lines brighten. The oscillations always have an impulsive trigger and are strongly damped while they cool down. However, in lines formed at coronal temperatures of ≈2 MK never any signature of these oscillations has been observed. In this study, we present the main properties of Doppler oscillations derived from a statistical study of 17 flare-like events, and a comparison with TRACE transverse loop oscillations. We also discuss the oscillation modes and their damping mechanism.",

author = "W. Curdt and Wang, \{T. J.\} and Innes, \{D. E.\} and Solanki, \{S. K.\} and Dammasch, \{I. E.\} and B. Kliem and L. Ofman",

year = "2002",

month = dec,

language = "English",

pages = "581--584",

journal = "European Space Agency, (Special Publication) ESA SP",

issn = "0379-6566",

publisher = "European Space Agency",

number = "506 II",

note = "The 10th European Solar Physics Meeting; Solar Variability: From Core to Outer Frontiers ; Conference date: 09-09-2002 Through 14-09-2002",

}

TY - JOUR

T1 - Doppler oscillations in hot coronal loops

AU - Curdt, W.

AU - Wang, T. J.

AU - Innes, D. E.

AU - Solanki, S. K.

AU - Dammasch, I. E.

AU - Kliem, B.

AU - Ofman, L.

PY - 2002/12

Y1 - 2002/12

N2 - Recently, a new kind of damped oscillations of hot coronal loops was revealed by the Solar Ultraviolet Measurements of Emitted Radiation (SUMER) spectrometer on SOHO. Such events seem to be a common feature observed in active region loops, seen very often when these lines brighten. The oscillations always have an impulsive trigger and are strongly damped while they cool down. However, in lines formed at coronal temperatures of ≈2 MK never any signature of these oscillations has been observed. In this study, we present the main properties of Doppler oscillations derived from a statistical study of 17 flare-like events, and a comparison with TRACE transverse loop oscillations. We also discuss the oscillation modes and their damping mechanism.

AB - Recently, a new kind of damped oscillations of hot coronal loops was revealed by the Solar Ultraviolet Measurements of Emitted Radiation (SUMER) spectrometer on SOHO. Such events seem to be a common feature observed in active region loops, seen very often when these lines brighten. The oscillations always have an impulsive trigger and are strongly damped while they cool down. However, in lines formed at coronal temperatures of ≈2 MK never any signature of these oscillations has been observed. In this study, we present the main properties of Doppler oscillations derived from a statistical study of 17 flare-like events, and a comparison with TRACE transverse loop oscillations. We also discuss the oscillation modes and their damping mechanism.

UR - https://www.scopus.com/pages/publications/0036972789

M3 - Conference article

AN - SCOPUS:0036972789

SN - 0379-6566

SP - 581

EP - 584

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

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

IS - 506 II

T2 - The 10th European Solar Physics Meeting; Solar Variability: From Core to Outer Frontiers

Y2 - 9 September 2002 through 14 September 2002

ER -

Doppler oscillations in hot coronal loops

Abstract

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