Enhanced Rieger-type periodicities' detection in X-ray solar flares and statistical validation of Rossby waves' existence

Dimitropoulou, M; Moussas, X; Strintzi, D

dc.contributor.author	Dimitropoulou, M	en
dc.contributor.author	Moussas, X	en
dc.contributor.author	Strintzi, D	en
dc.date.accessioned	2014-03-01T01:28:16Z
dc.date.available	2014-03-01T01:28:16Z
dc.date.issued	2008	en
dc.identifier.issn	0035-8711	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18788
dc.subject	Sun: flares	en
dc.subject.classification	Astronomy & Astrophysics	en
dc.subject.other	GROUP SUNSPOT NUMBERS	en
dc.subject.other	FUNDAMENTAL PERIOD	en
dc.subject.other	MAGNETIC-FLUX	en
dc.subject.other	ACTIVE ZONES	en
dc.subject.other	SPACED DATA	en
dc.subject.other	AREAS	en
dc.subject.other	SUN	en
dc.subject.other	SEARCH	en
dc.subject.other	154-DAY	en
dc.subject.other	BEHAVIOR	en
dc.title	Enhanced Rieger-type periodicities' detection in X-ray solar flares and statistical validation of Rossby waves' existence	en
heal.type	journalArticle	en
heal.identifier.primary	10.1111/j.1365-2966.2008.13203.x	en
heal.identifier.secondary	http://dx.doi.org/10.1111/j.1365-2966.2008.13203.x	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	The known Rieger periodicity (ranging in literature from 150 up to 160 d) is obvious in numerous solar indices. Many subharmonic periodicities have also been observed (128-, 102-, 78- and 51-d) in flare, sunspot, radio bursts, neutrino flux and flow data, coined as Rieger-type periodicities (RTPs). Several attempts are focused to the discovery of their source, as well as the explanation of some intrinsic attributes that they present, such as their connection to extremely active flares, their temporal intermittency as well as their tendency to occur near solar maxima. In this paper, we link the X-ray flare observations made on Geosynchronous Operational Environmental Satellites (GOES) to the already existing theoretical Lou model, suggesting that the mechanism behind the RTPs is the Rossby-type waves. The enhanced data analysis methods used in this article (Scargle-Lomb periodogram and Weighted Wavelet Z-Transform) provide the proper resolution needed to argue that RTPs are present also in less energetic flares, contrary to what has been inferred from observations so far. © 2008 RAS.	en
heal.publisher	BLACKWELL PUBLISHING	en
heal.journalName	Monthly Notices of the Royal Astronomical Society	en
dc.identifier.doi	10.1111/j.1365-2966.2008.13203.x	en
dc.identifier.isi	ISI:000255944100051	en
dc.identifier.volume	386	en
dc.identifier.issue	4	en
dc.identifier.spage	2278	en
dc.identifier.epage	2284	en