Statistical Analysis of the Relation between Coronal Mass Ejections and Solar Energetic Particles

To improve the forecasting capability of impactful solar energetic particle (SEP) events, the relation between coronal mass ejections (CMEs) and SEP events needs to be better understood. Here we present a statistical study of SEP occurrences and timescales with respect to the CME source locations an...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2020-07
Main Authors: Kihara, Kosuke, Huang, Yuwei, Nishimura, Nobuhiko, Nitta, Nariaki V, Yashiro, Seiji, Ichimoto, Kiyoshi, Asai, Ayumi
Format: Article
Language:English
Subjects:
Coronal mass ejection
Correlation
Energetic particles
Longitude
Solar corona
Statistical analysis
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
cited_by
cites
container_end_page
container_issue
container_start_page
container_title arXiv.org
container_volume
creator Kihara, Kosuke
Huang, Yuwei
Nishimura, Nobuhiko
Nitta, Nariaki V
Yashiro, Seiji
Ichimoto, Kiyoshi
Asai, Ayumi
description To improve the forecasting capability of impactful solar energetic particle (SEP) events, the relation between coronal mass ejections (CMEs) and SEP events needs to be better understood. Here we present a statistical study of SEP occurrences and timescales with respect to the CME source locations and speeds, considering all 257 fast (\(v_{CME}\) \(\ge\) 900 km/s) and wide (angular width \(\ge\) 60\(^{\circ}\)) CMEs that occurred between December 2006 and October 2017. We associate them with SEP events at energies above 10 MeV. Examination of the source region of each CME reveals that CMEs more often accompany a SEP event if they originate from the longitude of E20-W100 relative to the observer. However, a SEP event could still be absent if the CME is \(
doi_str_mv 10.48550/arxiv.2007.08062
format article
fullrecord <record><control><sourceid>proquest</sourceid><recordid>TN_cdi_proquest_journals_2424567472</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2424567472</sourcerecordid><originalsourceid>FETCH-LOGICAL-a522-3365dff3cb6a2ac8fc4470383e88d561e2406c167eecc5ca00c4534255e74bf23</originalsourceid><addsrcrecordid>eNotj0tLw0AUhQdBsNT-AHcDrlNv7jy3pdQHtCi2-3IzudGEkNGZ1Me_N6Krs_gOH-cIcVXCUntj4IbSV_uxRAC3BA8Wz8QMlSoLrxEvxCLnDgDQOjRGzQTtRxrbPLaBerkaqP_ObZaxkeMry2fuJxgHWfH4yTzIdUxx6sgd5Sw3HYdfmiUNtdzHnpLcDJxeeLLJJ0pT9JwvxXlDfebFf87F4XZzWN8X28e7h_VqW5BBLJSypm4aFSpLSME3QWsHyiv2vja2ZNRgQ2kdcwgmEEDQRunpBDtdNajm4vpP-5bi-4nzeOziKU1j8xE1amOddqh-AHdzVqk</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2424567472</pqid></control><display><type>article</type><title>Statistical Analysis of the Relation between Coronal Mass Ejections and Solar Energetic Particles</title><source>Publicly Available Content Database</source><creator>Kihara, Kosuke ; Huang, Yuwei ; Nishimura, Nobuhiko ; Nitta, Nariaki V ; Yashiro, Seiji ; Ichimoto, Kiyoshi ; Asai, Ayumi</creator><creatorcontrib>Kihara, Kosuke ; Huang, Yuwei ; Nishimura, Nobuhiko ; Nitta, Nariaki V ; Yashiro, Seiji ; Ichimoto, Kiyoshi ; Asai, Ayumi</creatorcontrib><description>To improve the forecasting capability of impactful solar energetic particle (SEP) events, the relation between coronal mass ejections (CMEs) and SEP events needs to be better understood. Here we present a statistical study of SEP occurrences and timescales with respect to the CME source locations and speeds, considering all 257 fast (\(v_{CME}\) \(\ge\) 900 km/s) and wide (angular width \(\ge\) 60\(^{\circ}\)) CMEs that occurred between December 2006 and October 2017. We associate them with SEP events at energies above 10 MeV. Examination of the source region of each CME reveals that CMEs more often accompany a SEP event if they originate from the longitude of E20-W100 relative to the observer. However, a SEP event could still be absent if the CME is \(&lt;\) 2000 km/s. For the associated CME-SEP pairs, we compute three timescales for each of the SEP events, following Kahler (2005, 2013); namely the timescale of the onset (TO), the rise time (TR), and the duration (TD). They are correlated with the longitude of the CME source region relative to the footpoint of the Parker spiral (\(\Delta\Phi\)) and \(v_{CME}\). The TO tends to be short for \(|\Delta\Phi|\) \(&lt;\) 60\(^{\circ}\) . This trend is weaker for TR and TD. The SEP timescales are only weakly correlated with \(v_{CME}\). Positive correlations of both TR and TD with \(v_{CME}\) are seen in poorly connected (large \(|\Delta\Phi|\)) events. Additionally, TO appears to be negatively correlated with \(v_{CME}\) for events with small \(|\Delta\Phi|\).</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.2007.08062</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Coronal mass ejection ; Correlation ; Energetic particles ; Longitude ; Solar corona ; Statistical analysis</subject><ispartof>arXiv.org, 2020-07</ispartof><rights>2020. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.proquest.com/docview/2424567472?pq-origsite=primo$$EHTML$$P50$$Gproquest$$Hfree_for_read</linktohtml><link.rule.ids>780,784,25752,27924,37011,44589</link.rule.ids></links><search><creatorcontrib>Kihara, Kosuke</creatorcontrib><creatorcontrib>Huang, Yuwei</creatorcontrib><creatorcontrib>Nishimura, Nobuhiko</creatorcontrib><creatorcontrib>Nitta, Nariaki V</creatorcontrib><creatorcontrib>Yashiro, Seiji</creatorcontrib><creatorcontrib>Ichimoto, Kiyoshi</creatorcontrib><creatorcontrib>Asai, Ayumi</creatorcontrib><title>Statistical Analysis of the Relation between Coronal Mass Ejections and Solar Energetic Particles</title><title>arXiv.org</title><description>To improve the forecasting capability of impactful solar energetic particle (SEP) events, the relation between coronal mass ejections (CMEs) and SEP events needs to be better understood. Here we present a statistical study of SEP occurrences and timescales with respect to the CME source locations and speeds, considering all 257 fast (\(v_{CME}\) \(\ge\) 900 km/s) and wide (angular width \(\ge\) 60\(^{\circ}\)) CMEs that occurred between December 2006 and October 2017. We associate them with SEP events at energies above 10 MeV. Examination of the source region of each CME reveals that CMEs more often accompany a SEP event if they originate from the longitude of E20-W100 relative to the observer. However, a SEP event could still be absent if the CME is \(&lt;\) 2000 km/s. For the associated CME-SEP pairs, we compute three timescales for each of the SEP events, following Kahler (2005, 2013); namely the timescale of the onset (TO), the rise time (TR), and the duration (TD). They are correlated with the longitude of the CME source region relative to the footpoint of the Parker spiral (\(\Delta\Phi\)) and \(v_{CME}\). The TO tends to be short for \(|\Delta\Phi|\) \(&lt;\) 60\(^{\circ}\) . This trend is weaker for TR and TD. The SEP timescales are only weakly correlated with \(v_{CME}\). Positive correlations of both TR and TD with \(v_{CME}\) are seen in poorly connected (large \(|\Delta\Phi|\)) events. Additionally, TO appears to be negatively correlated with \(v_{CME}\) for events with small \(|\Delta\Phi|\).</description><subject>Coronal mass ejection</subject><subject>Correlation</subject><subject>Energetic particles</subject><subject>Longitude</subject><subject>Solar corona</subject><subject>Statistical analysis</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>PIMPY</sourceid><recordid>eNotj0tLw0AUhQdBsNT-AHcDrlNv7jy3pdQHtCi2-3IzudGEkNGZ1Me_N6Krs_gOH-cIcVXCUntj4IbSV_uxRAC3BA8Wz8QMlSoLrxEvxCLnDgDQOjRGzQTtRxrbPLaBerkaqP_ObZaxkeMry2fuJxgHWfH4yTzIdUxx6sgd5Sw3HYdfmiUNtdzHnpLcDJxeeLLJJ0pT9JwvxXlDfebFf87F4XZzWN8X28e7h_VqW5BBLJSypm4aFSpLSME3QWsHyiv2vja2ZNRgQ2kdcwgmEEDQRunpBDtdNajm4vpP-5bi-4nzeOziKU1j8xE1amOddqh-AHdzVqk</recordid><startdate>20200716</startdate><enddate>20200716</enddate><creator>Kihara, Kosuke</creator><creator>Huang, Yuwei</creator><creator>Nishimura, Nobuhiko</creator><creator>Nitta, Nariaki V</creator><creator>Yashiro, Seiji</creator><creator>Ichimoto, Kiyoshi</creator><creator>Asai, Ayumi</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope></search><sort><creationdate>20200716</creationdate><title>Statistical Analysis of the Relation between Coronal Mass Ejections and Solar Energetic Particles</title><author>Kihara, Kosuke ; Huang, Yuwei ; Nishimura, Nobuhiko ; Nitta, Nariaki V ; Yashiro, Seiji ; Ichimoto, Kiyoshi ; Asai, Ayumi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a522-3365dff3cb6a2ac8fc4470383e88d561e2406c167eecc5ca00c4534255e74bf23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Coronal mass ejection</topic><topic>Correlation</topic><topic>Energetic particles</topic><topic>Longitude</topic><topic>Solar corona</topic><topic>Statistical analysis</topic><toplevel>online_resources</toplevel><creatorcontrib>Kihara, Kosuke</creatorcontrib><creatorcontrib>Huang, Yuwei</creatorcontrib><creatorcontrib>Nishimura, Nobuhiko</creatorcontrib><creatorcontrib>Nitta, Nariaki V</creatorcontrib><creatorcontrib>Yashiro, Seiji</creatorcontrib><creatorcontrib>Ichimoto, Kiyoshi</creatorcontrib><creatorcontrib>Asai, Ayumi</creatorcontrib><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science &amp; Engineering Collection</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest Central</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><jtitle>arXiv.org</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kihara, Kosuke</au><au>Huang, Yuwei</au><au>Nishimura, Nobuhiko</au><au>Nitta, Nariaki V</au><au>Yashiro, Seiji</au><au>Ichimoto, Kiyoshi</au><au>Asai, Ayumi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Statistical Analysis of the Relation between Coronal Mass Ejections and Solar Energetic Particles</atitle><jtitle>arXiv.org</jtitle><date>2020-07-16</date><risdate>2020</risdate><eissn>2331-8422</eissn><abstract>To improve the forecasting capability of impactful solar energetic particle (SEP) events, the relation between coronal mass ejections (CMEs) and SEP events needs to be better understood. Here we present a statistical study of SEP occurrences and timescales with respect to the CME source locations and speeds, considering all 257 fast (\(v_{CME}\) \(\ge\) 900 km/s) and wide (angular width \(\ge\) 60\(^{\circ}\)) CMEs that occurred between December 2006 and October 2017. We associate them with SEP events at energies above 10 MeV. Examination of the source region of each CME reveals that CMEs more often accompany a SEP event if they originate from the longitude of E20-W100 relative to the observer. However, a SEP event could still be absent if the CME is \(&lt;\) 2000 km/s. For the associated CME-SEP pairs, we compute three timescales for each of the SEP events, following Kahler (2005, 2013); namely the timescale of the onset (TO), the rise time (TR), and the duration (TD). They are correlated with the longitude of the CME source region relative to the footpoint of the Parker spiral (\(\Delta\Phi\)) and \(v_{CME}\). The TO tends to be short for \(|\Delta\Phi|\) \(&lt;\) 60\(^{\circ}\) . This trend is weaker for TR and TD. The SEP timescales are only weakly correlated with \(v_{CME}\). Positive correlations of both TR and TD with \(v_{CME}\) are seen in poorly connected (large \(|\Delta\Phi|\)) events. Additionally, TO appears to be negatively correlated with \(v_{CME}\) for events with small \(|\Delta\Phi|\).</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><doi>10.48550/arxiv.2007.08062</doi><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier EISSN: 2331-8422
ispartof arXiv.org, 2020-07
issn 2331-8422
language eng
recordid cdi_proquest_journals_2424567472
source Publicly Available Content Database
subjects Coronal mass ejection
Correlation
Energetic particles
Longitude
Solar corona
Statistical analysis
title Statistical Analysis of the Relation between Coronal Mass Ejections and Solar Energetic Particles
url http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-12T17%3A31%3A09IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Statistical%20Analysis%20of%20the%20Relation%20between%20Coronal%20Mass%20Ejections%20and%20Solar%20Energetic%20Particles&rft.jtitle=arXiv.org&rft.au=Kihara,%20Kosuke&rft.date=2020-07-16&rft.eissn=2331-8422&rft_id=info:doi/10.48550/arxiv.2007.08062&rft_dat=%3Cproquest%3E2424567472%3C/proquest%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-a522-3365dff3cb6a2ac8fc4470383e88d561e2406c167eecc5ca00c4534255e74bf23%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_pqid=2424567472&rft_id=info:pmid/&rfr_iscdi=true