Home > Research > Publications & Outputs > Solar flare induced cosmic noise absorption

Associated organisational unit

Electronic data

  • Ogunmodimu et al. 2018 (NRIAG) accepted manuscript

    Rights statement: For non-commercial purposes, lets others distribute and copy the article, and to include in a collective work (such as an anthology), as long as they credit the author(s) and provided they do not alter or modify the article.

    Accepted author manuscript, 1.47 MB, PDF document

    Available under license: CC BY-NC-ND

Links

Text available via DOI:

View graph of relations

Solar flare induced cosmic noise absorption

Research output: Contribution to journalJournal article

Published
Close
<mark>Journal publication date</mark>06/2018
<mark>Journal</mark>NRIAG Journal of Astronomy and Geophysics
Issue number1
Volume7
Number of pages9
Pages (from-to)31-39
Publication statusPublished
Early online date19/03/18
Original languageEnglish

Abstract

Solar flare events are a major observing emphasis for space weather because they affect the Earth's upper atmosphere and can eject high-energy particles that can adversely affect Earth's technologies. In this study we model 38.2 MHz cosmic noise absorption (CNA) by utilising measurements from the Imaging Riometer for Ionospheric Studies (IRIS) at Kilpisjärvi, Finland obtained during solar cycle 23 (1996-2009). We utilised X-ray archive for the same period from the Geostationary Operational Environmental Satellite (GOES) to study solar flare induced cosmic noise absorption. We identified the threshold of flare (M4 class class) that could bear significant influence on CNA. Through epoch analysis, we show the magnitude of absorption that each class of flare could produce. Using the parameters of flare and absorption we present a model that could provide the basis for nowcast of CNA.