Solar flare induced cosmic noise absorption

Ogunmodimu, Olugbenga and Honary, Farideh and Rogers, Neil Christopher and Falayi, Elijah and Bolaji, Segun (2018) Solar flare induced cosmic noise absorption. NRIAG Journal of Astronomy and Geophysics, 7 (1). pp. 31-39. ISSN 2090-9977

[img]
Preview
PDF (Ogunmodimu et al. 2018 (NRIAG) accepted manuscript)
Ogunmodimu_et_al._2018_NRIAG_accepted_manuscript.pdf - Accepted Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (1MB)

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.

Item Type:
Journal Article
Journal or Publication Title:
NRIAG Journal of Astronomy and Geophysics
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1900/1912
Subjects:
ID Code:
124033
Deposited By:
Deposited On:
15 Mar 2018 10:18
Refereed?:
Yes
Published?:
Published
Last Modified:
24 Nov 2020 06:05