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Research output: Contribution to journal › Journal article › peer-review
Solar flare induced cosmic noise absorption. / Ogunmodimu, Olugbenga; Honary, Farideh; Rogers, Neil Christopher; Falayi, Elijah; Bolaji, Segun.
In: NRIAG Journal of Astronomy and Geophysics, Vol. 7, No. 1, 06.2018, p. 31-39.Research output: Contribution to journal › Journal article › peer-review
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TY - JOUR
T1 - Solar flare induced cosmic noise absorption
AU - Ogunmodimu, Olugbenga
AU - Honary, Farideh
AU - Rogers, Neil Christopher
AU - Falayi, Elijah
AU - Bolaji, Segun
PY - 2018/6
Y1 - 2018/6
N2 - 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.
AB - 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.
KW - riometer
KW - Solar flares
KW - Ionosphere
U2 - 10.1016/j.nrjag.2018.03.002
DO - 10.1016/j.nrjag.2018.03.002
M3 - Journal article
VL - 7
SP - 31
EP - 39
JO - NRIAG Journal of Astronomy and Geophysics
JF - NRIAG Journal of Astronomy and Geophysics
SN - 2090-9977
IS - 1
ER -