%0 Conference Paper
%A Chowdhury, Partha
%T Periodicities in the soft X-ray emission from the solar corona during descending phase of cycle 23
%C Hamburg
%I Verlag Deutsches Elektronen-Synchrotron
%M PUBDB-2016-05928
%@ 978-3-935702-59-1
%B DESY-PROC
%P 141-146
%D 2014
%< Chowdhury, Partha "Periodicities in the soft X-ray emission from the solar corona during descending phase of cycle 23" in Proceedings, 10th Patras Workshop on Axions, WIMPs and WISPs (AXION-WIMP 2014)  / Tsesmelis, Emmanuel, Maroudas, Marios (eds.), Verlag Deutsches Elektronen-Synchrotron : 2014 ; AXION-WIMP 2014 : 10th Patras Workshop on Axions, WIMPs and WISPs, 2014-06-29 - 2014-07-04, Geneva
%X We have studied the time series of full disk integrated soft X-ray emission from the solar corona during January 2004 to December 2008, covering the entire descending phase of solar cycle 23 from a global point of view. We employ the daily X-ray index (DXI) derived from 1s cadence X-ray observations from the Si detector of "Solar X-ray Spectrometer (SOXS)" mission in four different energy bands ranging between 6 − 25 KeV. The daily time series is subjected to power spectrum analysis after appropriate correction for noise. Lomb-Scargle periodogram technique has shown prominent periods of   ∼ 13.5 days,   ∼ 27 days, and near Rieger period of   ∼ 181 days and   ∼ 1.24 years in all energy bands. Further to this, other periods like   ∼ 31,  ∼ 48,  ∼ 57,  ∼ 76,  ∼ 96,  ∼ 130,  ∼ 227 and  ∼ 303 days are also detected in different energy bands. We discuss our results in the light of previous observations and existing numerical models.
%B 10th Patras Workshop on Axions, WIMPs and WISPs
%C 29 Jun 2014 - 4 Jul 2014, Geneva (Switzerland)
Y2 29 Jun 2014 - 4 Jul 2014
M2 Geneva, Switzerland
%F PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
%9 Contribution to a conference proceedingsContribution to a book
%R 10.3204/DESY-PROC-2014-03/chowdhury_partha
%U https://bib-pubdb1.desy.de/record/315521