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International Exchanges: “Time-dependent properties of quasi-periodic pulsations as indicators of flaring energy release processes”

solar flare

Simulated Flares:
The ISSI team led by Broomhall performed a 'Hare and Hounds' exercise to determine how good various methods are at detecting QPPs in flares. The hare (Broomhall) has produced simulated flares. All of the data sets contain a primary flare (of various lengths, amplitudes and shapes), red and white noise. Then various additional ‘qpp-like’ signals have been added to some of the flares as well. Each flare has been assigned a random number which is in the filename. The files are in fits format with a time column and a flux column. All time series are 300 data points in length (arbitrary units). These flares will also be used in this project. The flares can be found following the link below:


1) V. M. Nakariakov, D. Y. Kolotkov, E. G. Kupriyanova, T. Mehta, C. E. Pugh, D.-H. Lee and A.-M. Broomhall «Non-stationary quasi-periodic pulsations in solar and stellar flares», 2018, Plasma Phys. Cont. Fusion, 61, 1, id 014024. DOI: 10.1088/1361-6587/aad97c.

2) Elena G. Kupriyanova, Larisa K. Kashapova, Tom Van Doorsselaere, Partha Chowdhury, Abhishek K. Srivastava, and Yong-Jae Moon "Quasi-periodic pulsations in a solar flare with an unusual phase shift" MNRAS, 2019, DOI: 10.1093/mnras/sty3480 (

The International Workshop “Eruptive energy release processes on the Sun and stars: origins and effects”, 10-12 October 2018, the Institute of Solar-Terrestrial Physics SB RAS, Irkutsk, Russia (

Workshop 2 “Quasi-periodic Pulsations in Stellar Flares: a Tool for Studying the Solar-Stellar Connection”, from 26th Feb to 2rd March 2018, International Space Science Institute, Bern, Switzerland, (

The 17th RHESSI workshop, 18-23 June 2018, Trinity College Dublin, Ireland ( See PDF file with presentation here 

XVIth Hvar Astrophysical Colloquium/ ISEST 2018 Workshop, 24-28 September 2018, Hvar, Croatia

XXII Russian Annual Meeting on Solar Physics "Solar and Solar-Earth physics-2017", 8–12 October 2018, Pulkovo Observatory, Saint Petersburg, Russia (in Russian)

15th European Space Weather Week, 5-9 November 2018, Leuven, Belgium (

Seminar at the Centre for Fusion, Space and Astrophysics, University of Warwick, UK, on 14 November 2018 (file “Kupriyanova_et_al_2018-11-14_Warwick.pdf”)