Skip to content Skip to navigation
University of Warwick
  • Study
  • |
  • Research
  • |
  • Business
  • |
  • Alumni
  • |
  • News
  • |
  • About

University of Warwick
Publications service & WRAP

Highlight your research

  • WRAP
    • Home
    • Search WRAP
    • Browse by Warwick Author
    • Browse WRAP by Year
    • Browse WRAP by Subject
    • Browse WRAP by Department
    • Browse WRAP by Funder
    • Browse Theses by Department
  • Publications Service
    • Home
    • Search Publications Service
    • Browse by Warwick Author
    • Browse Publications service by Year
    • Browse Publications service by Subject
    • Browse Publications service by Department
    • Browse Publications service by Funder
  • Help & Advice
University of Warwick

The Library

  • Login
  • Admin

Periodic spectral line asymmetries in solar coronal structures from slow magnetoacoustic waves

Tools
- Tools
+ Tools

Verwichte, E. (Erwin), Marsh, M., Foullon, C. (Claire), Van Doorsselaere, Tom, Moortel, Ineke de, Hood, Alan W. and Nakariakov, V. M. (Valery M.) (2010) Periodic spectral line asymmetries in solar coronal structures from slow magnetoacoustic waves. The Astrophysical Journal. Letters, Vol.724 (No.2). L194-L198. doi:10.1088/2041-8205/724/2/L194 ISSN 2041-8205.

Research output not available from this repository.

Request-a-Copy directly from author or use local Library Get it For Me service.

Official URL: http://dx.doi.org/10.1088/2041-8205/724/2/L194

Request Changes to record.

Abstract

Recent spectral observations of upward moving quasi-periodic intensity perturbations in solar coronal structures have shown evidence of periodic line asymmetries near their footpoints. These observations challenge the established interpretation of the intensity perturbations in terms of propagating slow magnetoacoustic waves. We show that slow waves inherently have a bias toward enhancement of emission in the blue wing of the emission line due to in-phase behavior of velocity and density perturbations. We demonstrate that slow waves cause line asymmetries when the emission line is averaged over an oscillation period or when a quasi-static plasma component in the line of sight is included. Therefore, we conclude that slow magnetoacoustic waves remain a valid explanation for the observed quasi-periodic intensity perturbations.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Sun -- Corona, Magnetohydrodynamics, Magnetohydrodynamic waves, Solar oscillations, Spectral line formation
Journal or Publication Title: The Astrophysical Journal. Letters
Publisher: Institute of Physics Publishing, Inc.
ISSN: 2041-8205
Official Date: 2010
Dates:
DateEvent
2010Published
Volume: Vol.724
Number: No.2
Page Range: L194-L198
DOI: 10.1088/2041-8205/724/2/L194
Status: Peer Reviewed
Publication Status: Published
Funder: Engineering and Physical Sciences Research Council (EPSRC), Science and Technology Facilities Council (Great Britain) (STFC), Seventh Framework Programme (European Commission) (FP7)
Grant number: ST/F002769/1 (STFC), 220555 (FP7)

Request changes or add full text files to a record

Repository staff actions (login required)

View Item View Item
twitter

Email us: wrap@warwick.ac.uk
Contact Details
About Us