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

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dc.contributor.authorKarl-Ludwig Klein
dc.contributor.authorKostas Tziotziou
dc.contributor.authorPietro Zucca
dc.contributor.authorEino Valtonen
dc.contributor.authorNicole Vilmer
dc.contributor.authorOlga E. Malandraki
dc.contributor.authorClarisse Hamadache
dc.contributor.authorBernd Heber
dc.contributor.authorJürgen Kiener
dc.contributor.organizationfi=avaruustutkimuslaboratorio|en=Space Research Laboratory|
dc.contributor.organization-code1.2.246.10.2458963.20.47833719389
dc.converis.publication-id36934483
dc.converis.urlhttps://research.utu.fi/converis/portal/Publication/36934483
dc.date.accessioned2022-10-27T12:16:55Z
dc.date.available2022-10-27T12:16:55Z
dc.description.abstract<p>The rather frequent occurrence, and sometimes long duration, of -</p><p> </p><p>ray events at photon energies above 100 MeV challenges our understanding of</p><p> </p><p>particle acceleration processes at the Sun. The emission is ascribed to pion-decay</p><p> </p><p>photons due to protons with energies above 300 MeV.We study the X-ray and radio</p><p> </p><p></p><p>emissions and the solar energetic particles (SEPs) in space for a set of 25 <i>Fermi</i></p><p><i> </i></p><p>-ray events. They are accompanied by strong SEP events, including, in most cases</p><p></p><p></p><p> </p><p>where the parent activity is well-connected, protons above 300 MeV. Signatures of</p><p> </p><p>energetic electron acceleration in the corona accompany the impulsive and early</p><p> </p><p>post-impulsive -ray emission. -ray emission lasting several hours accompanies</p><p> </p><p>in general the decay phase of long-lasting soft X-ray bursts and decametric-tokilometric</p><p> </p><p>type II bursts. We discuss the impact of these results on the origin of</p><p> </p><p>the -ray events.</p><p></p><p><br /></p>
dc.format.pagerange133
dc.format.pagerange155
dc.identifier.eisbn978-3-319-60051-2
dc.identifier.isbn978-3-319-60050-5
dc.identifier.issn0067-0057
dc.identifier.olddbid174427
dc.identifier.oldhandle10024/157521
dc.identifier.urihttps://www.utupub.fi/handle/11111/34226
dc.identifier.urlhttps://link.springer.com/chapter/10.1007/978-3-319-60051-2_8
dc.identifier.urnURN:NBN:fi-fe2021042720266
dc.language.isoen
dc.okm.affiliatedauthorValtonen, Eino
dc.okm.discipline115 Astronomy and space scienceen_GB
dc.okm.discipline115 Avaruustieteet ja tähtitiedefi_FI
dc.okm.internationalcopublicationinternational co-publication
dc.okm.internationalityInternational publication
dc.okm.typeA3 Book
dc.publisherSpringer
dc.publisher.isbn978-81-322;978-3-540;978-3-642;978-3-662;978-3-7908;978-3-8274;978-3-8347;978-90-481;978-94-007;978-94-009;978-94-010;978-94-011;978-94-015;978-94-017;978-94-024;978-0-387;978-0-8176;978-1-4419;978-1-4612;978-1-4613;978-1-4614;978-1-4615;978-1-4684;978-1-4757;978-1-4899;978-1-4939;978-1-5041;978-3-319;978-1-4020;978-0-85729;978-1-4471;978-1-84628;978-1-84800;978-1-84882;978-1-84996;978-1-85233;978-3-211;978-3-7091;978-4-431;978-3-322;978-3-409;978-3-531;978-3-658;978-3-663;978-3-8100;978-981-287;978-981-10;978-981-13;978-3-030;978-981-32;978-981-15;978-981-16;978-981-329;978-981-334;978-981-336;978-3-031;978-981-19;
dc.relation.doi10.1007/978-3-319-60051-2_8
dc.relation.ispartofseriesAstrophysics and Space Science Library
dc.relation.volume444
dc.source.identifierhttps://www.utupub.fi/handle/10024/157521
dc.titleX-Ray, Radio and SEP Observations of Relativistic Gamma-Ray Events
dc.title.bookSolar Particle Radiation Storms Forecasting and Analysis: The HESPERIA HORIZON 2020 Project and Beyond
dc.year.issued2018

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