Historical Auroras in the 990s: Evidence of Great Magnetic Storms
A significant carbon-14 enhancement has recently been found in tree rings for the year 994, suggesting an extremely strong and brief cosmic ray flux event. The origin of this particular cosmic ray event has not been confirmed, but one possibility is that it might be of solar origin. Contemporary his...
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| Veröffentlicht in: | Solar physics 2017-01, Vol.292 (1), p.1, Article 12 |
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| container_title | Solar physics |
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| creator | Hayakawa, Hisashi Tamazawa, Harufumi Uchiyama, Yurina Ebihara, Yusuke Miyahara, Hiroko Kosaka, Shunsuke Iwahashi, Kiyomi Isobe, Hiroaki |
| description | A significant carbon-14 enhancement has recently been found in tree rings for the year 994, suggesting an extremely strong and brief cosmic ray flux event. The origin of this particular cosmic ray event has not been confirmed, but one possibility is that it might be of solar origin. Contemporary historical records of low-latitude auroras can be used as supporting evidence of intense solar activity around that time. We investigate previously reported as well as new records that have been found in contemporary observations from the 990s to determine potential auroras. Records of potential red auroras in late 992 and early 993 were found around the world,
i.e.
in the Korean Peninsula, Saxonian cities in modern Germany, and the Island of Ireland, suggesting the occurrence of an intense geomagnetic storm driven by solar activity. |
| doi_str_mv | 10.1007/s11207-016-1039-2 |
| format | Article |
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i.e.
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i.e.
in the Korean Peninsula, Saxonian cities in modern Germany, and the Island of Ireland, suggesting the occurrence of an intense geomagnetic storm driven by solar activity.</description><subject>Astrophysics and Astroparticles</subject><subject>Atmospheric Sciences</subject><subject>Auroras</subject><subject>Cosmic rays</subject><subject>Magnetic fields</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Solar activity</subject><subject>Solar flares</subject><subject>Solar physics</subject><subject>Space Exploration and Astronautics</subject><subject>Space Sciences (including Extraterrestrial Physics</subject><subject>Sun</subject><issn>0038-0938</issn><issn>1573-093X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp1kDFPwzAUhC0EEqXwA9gsMRves-PEZquq0iIVMQASm-U4TknVJsVOkfj3OAoDC9O74b47vSPkGuEWAYq7iMihYIA5QxCa8RMyQVkIBlq8n5IJgFCDVufkIsYtwEDJCZmtmth3oXF2R2fH0AUbadPS_sNTrSHe08VXU_nWedrVdBm87emT3bS-bxx9SeA-XpKz2u6iv_q9U_L2sHidr9j6efk4n62ZE4r3rKqqXBVlqbV1dS7KWmrtpZU2y5wodVYWiAgKc5QiqbxS6EXNpeai4tyjmJKbMfcQus-jj73ZdsfQpkqDKlOgVZ5lyYWjy4UuxuBrcwjN3oZvg2CGn824lElLmWEpwxPDRyYmb7vx4U_yv9APgWlozw</recordid><startdate>20170101</startdate><enddate>20170101</enddate><creator>Hayakawa, Hisashi</creator><creator>Tamazawa, Harufumi</creator><creator>Uchiyama, Yurina</creator><creator>Ebihara, Yusuke</creator><creator>Miyahara, Hiroko</creator><creator>Kosaka, Shunsuke</creator><creator>Iwahashi, Kiyomi</creator><creator>Isobe, Hiroaki</creator><general>Springer Netherlands</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TG</scope><scope>7XB</scope><scope>88I</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>H8D</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>L7M</scope><scope>M2P</scope><scope>P5Z</scope><scope>P62</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>Q9U</scope></search><sort><creationdate>20170101</creationdate><title>Historical Auroras in the 990s: Evidence of Great Magnetic Storms</title><author>Hayakawa, Hisashi ; 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The origin of this particular cosmic ray event has not been confirmed, but one possibility is that it might be of solar origin. Contemporary historical records of low-latitude auroras can be used as supporting evidence of intense solar activity around that time. We investigate previously reported as well as new records that have been found in contemporary observations from the 990s to determine potential auroras. Records of potential red auroras in late 992 and early 993 were found around the world,
i.e.
in the Korean Peninsula, Saxonian cities in modern Germany, and the Island of Ireland, suggesting the occurrence of an intense geomagnetic storm driven by solar activity.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s11207-016-1039-2</doi></addata></record> |
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| subjects | Astrophysics and Astroparticles Atmospheric Sciences Auroras Cosmic rays Magnetic fields Physics Physics and Astronomy Solar activity Solar flares Solar physics Space Exploration and Astronautics Space Sciences (including Extraterrestrial Physics Sun |
| title | Historical Auroras in the 990s: Evidence of Great Magnetic Storms |
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