ZIB

Hits per page

hit 1 - 1 | 1 hit

Select All Export

Electronic Resource

A Method for Characterizing Rotation Rates in the Soft X-Ray Corona (1999)

Weber, M.A. ; Acton, L.W. ; Alexander, D. ; [et al.]

Springer

Solar physics 189 (1999), S. 271-288

add to mindlist on the mindlist

Details

ISSN: 1573-093X

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract Differential rotation rates of soft X-ray features in the solar corona are quantified by a method of harmonic filtering using the Lomb-Scargle periodogram. This approach leads reasonably to a quantitative discrimination between uncertainty estimates and spectral leakage of the fundamental rotation frequency due to the presence of multiple rotating tracers. Mean rotation rates as a function of latitude and year are calculated for the years 1992–1997 (roughly the declining phase of the last solar activity cycle). The corona is found to have a small but measurable latitudinal gradient in rotation rate. The presence of multiple features places a lower bound of 1–2% on the relative uncertainties with which a `mean' rotation rate can be measured. The results are compared with autocorrelation estimates and found to agree within 1σ.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1023/A:1005243924098

Library	Location	Call Number	Volume/Issue/Year	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

hit 1 - 1 | 1 hit