A3 Vertaisarvioitu kirjan tai muun kokoomateoksen osa

X-Ray, Radio and SEP Observations of Relativistic Gamma-Ray Events




TekijätKarl-Ludwig Klein, Kostas Tziotziou, Pietro Zucca, Eino Valtonen, Nicole Vilmer, Olga E. Malandraki, Clarisse Hamadache, Bernd Heber, Jürgen Kiener

ToimittajaOlga E. Malandraki, Norma B. Crosby

Julkaisuvuosi2018

Kokoomateoksen nimiSolar Particle Radiation Storms Forecasting and Analysis: The HESPERIA HORIZON 2020 Project and Beyond

Sarjan nimiAstrophysics and Space Science Library

Vuosikerta444

Aloitussivu133

Lopetussivu155

ISBN978-3-319-60050-5

eISBN978-3-319-60051-2

ISSN0067-0057

DOIhttps://doi.org/10.1007/978-3-319-60051-2_8

Verkko-osoitehttps://link.springer.com/chapter/10.1007/978-3-319-60051-2_8

Rinnakkaistallenteen osoitehttps://research.utu.fi/converis/portal/detail/Publication/36934483


Tiivistelmä

The rather frequent occurrence, and sometimes long duration, of -

ray events at photon energies above 100 MeV challenges our understanding of

particle acceleration processes at the Sun. The emission is ascribed to pion-decay

photons due to protons with energies above 300 MeV.We study the X-ray and radio

emissions and the solar energetic particles (SEPs) in space for a set of 25 Fermi


-ray events. They are accompanied by strong SEP events, including, in most cases

where the parent activity is well-connected, protons above 300 MeV. Signatures of

energetic electron acceleration in the corona accompany the impulsive and early

post-impulsive -ray emission. -ray emission lasting several hours accompanies

in general the decay phase of long-lasting soft X-ray bursts and decametric-tokilometric

type II bursts. We discuss the impact of these results on the origin of

the -ray events.


Ladattava julkaisu

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Last updated on 2024-26-11 at 11:07