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Solar irradiance, climatic indicators and climate change - An empirical analysis

Singh, A. K.; Bhargawa, Asheesh

Since the Sun is the main source of energy for our planet therefore even a slight change in its output energy can make a huge difference in the climatic conditions of the terrestrial environment. The rate of energy coming from the Sun (solar irradiance) might affect our climate directly by changing the rate of solar heating of the Earth and the at…

Potential role of energetic particle observations in geomagnetic storm forecasting

Valtonen, Eino; Ameri, Dheyaa

We have searched for solar proton events consisting of both solar energetic particles (SEPs) accelerated near the Sun and energetic storm particles (ESPs) accelerated by interplanetary shocks driven by coronal mass ejections (CMEs) and observed near the time when the shock passes the observer. The purpose of this study is to investigate the possib…

Variation of coronal holes latitudinal distribution: Correction of limb brightening of EUV coronal images

Chargeishvili, B. B.; Maghradze, D. A.; Japaridze, D. R. +4 more

We studied the limb brightening of SOHO EIT daily images of the solar corona taken in 195 Å wavelength line from 1996 to 2018. Using special software, we studied the distribution of the background intensity of the entire disk in the direction of rotation (horizontally) and perpendicular to the direction of rotation (vertical). The study shows that…

A statistical study of CME-associated flare during the solar cycle 24

Beheary, M. M.; Shaltout, Abdelrazek M. K.; Amin, Eid A. +1 more

We investigate on the relationship between flares and coronal mass ejections (CMEs) in which a flare started before and after the CME events which differ in their physical properties, indicating potentially different initiation mechanisms. The physical properties of two types flare-correlated CME remain an interesting and important question in spa…

A study on radio-loud interacting/non-interacting CMEs-associated SEPs and solar flares

Feng, Li; Pappa Kalaivani, P.; Prakash, O. +4 more

We have established a data set of 58 major hybrid SEP events associated with meter-to-decahectometer wavelength (m-to-DH) type II bursts, solar flares, and radio-load CMEs during the period of 1997-2014. The main focus of our study is to address the following two questions: Does the interaction of CMEs play a role in the enhancement of SEP intensi…

Investigating the Coronal Mass Ejections associated with DH type-II radio bursts and solar flares during the ascending phase of the solar cycle 24

Nedal, Mohamed; Mahrous, Ayman; Youssef, M. +1 more

We studied a set of 74 CMEs, with shedding the light on the halo-CMEs (HCMEs), that are associated with decametric - hectometric (DH) type-II radio bursts (1-16 MHz) and solar flares during the period 2008-2014. The events were classified into 3 groups (disk, intermediate, and limb events) based on their longitudinal distribution.

We found th…