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Astronomische Nachrichten, ISSN 0004-6337, 06/2016, Volume 337, Issue 6, pp. 581 - 620
Hoyt & Schatten (1998) claim that Simon Marius would have observed the sun from 1617 Jun 7 to 1618 Dec 31 (Gregorian calendar) all days, except three short... 
Sun: activity | history and philosophy of astronomy | sunspots | AD 775 | ROTATION | GALILEO | SCHEINER | CATALOG | GRAND MINIMA | ASTRONOMY & ASTROPHYSICS | MAUNDER MINIMUM | SOLAR-ACTIVITY | 165 BC | CYCLE | Telescopes | Solar physics | Science history | Sunspots | Auroras | Historic records | Observers | Texts | Latitude | History | Sun | Data bases | Drawings | Systematics | Spring (season) | Sunspot numbers | Maunder minimum | Databases | Stellar mass | Spots | Documents | Astronomy | Solar cycles
Journal Article
Earth, Planets and Space, ISSN 1343-8832, 12/2015, Volume 67, Issue 1, pp. 1 - 14
Records of sunspot and aurora observations in pre-telescopic historical documents can provide useful information about solar activity in the past. This is also... 
Aurora | Solar activity | Earth Sciences | Geology | Chinese chronicle | Historical resource | Earth Sciences, general | Geophysics/Geodesy | Sunspot | C-14 | GEOSCIENCES, MULTIDISCIPLINARY | SOLAR | SUPERFLARES | EVENT | Governments | Eyes | Auroras | Communities | Space weather | Sunspots | Information dissemination
Journal Article
Solar Physics, ISSN 0038-0938, 11/2016, Volume 291, Issue 9, pp. 2829 - 2841
Journal Article
Advances in Space Research, ISSN 0273-1177, 12/2016, Volume 58, Issue 11, pp. 2247 - 2254
In this paper we analyze a small collection of sunspot drawings made at the Astronomical Observatory of the Spanish Navy in the period from April 1, 1884 to... 
Solar rotation | Heliographic coordinates | Historical observations | Sunspots | GEOSCIENCES, MULTIDISCIPLINARY | SOLAR-CYCLE | ASTRONOMY & ASTROPHYSICS | METEOROLOGY & ATMOSPHERIC SCIENCES | DIFFERENTIAL ROTATION | Navy | Astronomical observatories | Mathematical analysis | Collection | Space research | Drawings
Journal Article
Astronomische Nachrichten, ISSN 0004-6337, 01/2018, Volume 339, Issue 1, pp. 10 - 29
We review some applications of the method of electronic searching for historical observations of sunspots and aurorae in the Chinese text corpus by Hayakawa et... 
aurorae | sunspots | solar activity | historical Chinese observations | history of astronomy | AD 775 | TREE-RINGS | RECORDS | C-14 | ASTRONOMY & ASTROPHYSICS | JAPAN | MAUNDER MINIMUM | ANCIENT AURORAE | SOLAR-ACTIVITY | 165 BC | CYCLE | Comets | Solar activity | Dating techniques | Astrophysics | Night | Auroras | Moon | Sunspots | Carbon 14
Journal Article
GEOFISICA INTERNACIONAL, ISSN 0016-7169, 07/2008, Volume 47, Issue 3, pp. 189 - 192
The historical reconstruction of solar activity is a task of great interest for geophysicists and solar physicists. Historical sunspot observations are a... 
GEOCHEMISTRY & GEOPHYSICS | Mexico | sunspot observation | SOLAR-ACTIVITY | solar activity | historical records | Geochemistry & Geophysics
Journal Article
Astronomy and Astrophysics, ISSN 0004-6361, 01/2016, Volume 585, p. A40
Aims. The present work is the first in a series of articles that develop a new proxy to represent the evolution of magnetic activity in past solar cycles by... 
Sun: activity | Sun: faculae, plages | Sunspots | Sun: magnetic fields | Maps | Historic | Polarity | K lines | Solar cycles | Pixels | Astronomy
Journal Article
Geofisica Internacional, ISSN 0016-7169, 2008, Volume 47, Issue 3, pp. 189 - 192
Journal Article
Journal of Space Weather and Space Climate, ISSN 2115-7251, 2017, Volume 7, p. A15
Two sunspot observations recorded by the Mexican Felipe de Zuniga y Ontiveros have been revealed from a manuscript. One sunspot group was recorded on 9th... 
Solar activity | Historical records | Solar cycle | Sun | Sunspot | GEOCHEMISTRY & GEOPHYSICS | NUMBER | DRAWINGS | ASTRONOMY & ASTROPHYSICS | METEOROLOGY & ATMOSPHERIC SCIENCES | Solar eclipses | Sunspot groups | 18th century | Sunspots | Sketches | Manuscripts
Journal Article
Astronomische Nachrichten, ISSN 0004-6337, 04/2015, Volume 336, Issue 3, pp. 225 - 248
Journal Article
Astronomy and Astrophysics, ISSN 0004-6361, 05/2015, Volume 577, p. A71
Aims. The Maunder minimum (MM) of greatly reduced solar activity took place in 1645-1715, but the exact level of sunspot activity is uncertain because it is... 
Sun: activity | Sunspots | GROUP SUNSPOT NUMBERS | ACTIVITY RECONSTRUCTION | C-14 | sunspots | ASTRONOMY & ASTROPHYSICS | Solar activity | Databases | Spots | Historic | Statistics | Low level | Astronomy | Physics - Solar and Stellar Astrophysics
Journal Article
Journal of Space Weather and Space Climate, ISSN 2115-7251, 2012, Volume 2, p. A12
Recently, Svalgaard has proposed that Waldmeier introduced a discontinuity in the International Sunspot Number (ISN) around 1945. In this paper, we study some... 
Solar activity | Historical records | Solar cycle | Space climate | Sunspot | LENGTH | AMPLITUDE | WOLF NUMBER | GEOCHEMISTRY & GEOPHYSICS | solar cycle | SOLAR-CYCLE | FLUCTUATIONS | ASTRONOMY & ASTROPHYSICS | solar activity | sunspot | space climate | METEOROLOGY & ATMOSPHERIC SCIENCES | historical records | Discontinuity | Data analysis | Sunspot numbers | Sunspots | Sunspot cycle
Journal Article
ASTROPHYSICAL JOURNAL, ISSN 0004-637X, 12/2019, Volume 887, Issue 1, p. 7
Journal Article