dc.contributor.author | Gary Dale E | |
dc.contributor.author | Mishev Alexnder | |
dc.contributor.author | Yu Sijie | |
dc.contributor.author | Omodei Nicola | |
dc.contributor.author | Kocharov Leon | |
dc.contributor.author | Pesce-Rollins Melissa | |
dc.contributor.author | Usoskin Ilya | |
dc.contributor.author | Longo Fransesco | |
dc.contributor.author | Vainio Rami | |
dc.date.accessioned | 2022-10-28T14:13:27Z | |
dc.date.available | 2022-10-28T14:13:27Z | |
dc.identifier.uri | https://www.utupub.fi/handle/10024/170099 | |
dc.description.abstract | <p>During the 24th solar cycle, the Fermi Large Area Telescope (LAT) has observed a total of 27 solar flares possessing delayed gamma-ray emission, including the exceptionally well-observed flare and coronal mass ejection (CME) on 2017 September 10. Based on the Fermi/LAT data, we plot, for the first time, maps of possible sources of the delayed >100 MeV gamma-ray emission of the 2017 September 10 event. The long-lasting gamma-ray emission is localized under the CME core. The gamma-ray spectrum exhibits intermittent changes in time, implying that more than one source of high-energy protons was formed during the flare-CME eruption. We find a good statistical correlation between the gamma-ray fluences of the Fermi/LAT-observed delayed events and the products of corresponding CME speed and the square root of the soft X-ray flare magnitude. Data support the idea that both flares and CMEs jointly contribute to the production of subrelativistic and relativistic protons near the Sun.</p> | |
dc.language.iso | en | |
dc.publisher | IOP PUBLISHING LTD | |
dc.title | Multiple Sources of Solar High-energy Protons | |
dc.identifier.url | https://doi.org/10.3847/1538-4357/abff57 | |
dc.identifier.urn | URN:NBN:fi-fe2021093048981 | |
dc.relation.volume | 915 | |
dc.contributor.organization | fi=avaruustutkimuslaboratorio|en=Space Research Laboratory| | |
dc.contributor.organization-code | 2606702 | |
dc.converis.publication-id | 66841586 | |
dc.converis.url | https://research.utu.fi/converis/portal/Publication/66841586 | |
dc.identifier.eissn | 0004-637X | |
dc.identifier.jour-issn | 0004-637X | |
dc.okm.affiliatedauthor | Vainio, Rami | |
dc.okm.discipline | 115 Astronomy and space science | en_GB |
dc.okm.discipline | 115 Avaruustieteet ja tähtitiede | fi_FI |
dc.okm.internationalcopublication | international co-publication | |
dc.okm.internationality | International publication | |
dc.okm.type | Journal article | |
dc.publisher.country | Britannia | fi_FI |
dc.publisher.country | United Kingdom | en_GB |
dc.publisher.country-code | GB | |
dc.publisher.place | Bristol | |
dc.relation.articlenumber | ARTN 12 | |
dc.relation.doi | 10.3847/1538-4357/abff57 | |
dc.relation.ispartofjournal | Astrophysical Journal | |
dc.year.issued | 2021 | |