A Revised Collection of Sunspot Group Numbers

Sunspot group tilt angle measurements from historical observations

(2016) V. Senthamizh Pavai et al.   ADVANCES IN SPACE RESEARCH

Sunspot Observations During the Maunder Minimum from the Correspondence of John Flamsteed

(2016) V. M. S. Carrasco et al.   SOLAR PHYSICS

Newly found sunspot observations by Peter Becker from Rostock for 1708, 1709, and 1710

(2015) R. Neuhäuser et al.   ASTRONOMISCHE NACHRICHTEN

Level and length of cyclic solar activity during the Maunder minimum as deduced from the active-day statistics

(2015) J. M. Vaquero et al.   ASTRONOMY & ASTROPHYSICS

The Maunder minimum (1645–1715) was indeed a grand minimum: A reassessment of multiple datasets

(2015) Ilya G. Usoskin et al.   ASTRONOMY & ASTROPHYSICS

Redefining the limit dates for the Maunder Minimum

(2015) J.M. Vaquero et al.   NEW ASTRONOMY

Sunspots During the Maunder Minimum from Machina Coelestis by Hevelius

(2015) V. M. S. Carrasco et al.   SOLAR PHYSICS

The heliospheric Hale cycle over the last 300 years and its implications for a “lost” late 18th century solar cycle

(2015) Mathew J. Owens et al.   Journal of Space Weather and Space Climate

Level and length of cyclic solar activity during the Maunder minimum as deduced from the active-day statistics

(2015) J. M. Vaquero et al.   ASTRONOMY & ASTROPHYSICS

The Maunder minimum (1645–1715) was indeed a grand minimum: A reassessment of multiple datasets

(2015) Ilya G. Usoskin et al.   ASTRONOMY & ASTROPHYSICS

Reconstructing past solar activity using meridian solar observations: The case of the Royal Observatory of the Spanish Navy (1833–1840)

(2014) J.M. Vaquero et al.   ADVANCES IN SPACE RESEARCH

Sunspot Numbers and Areas from the Madrid Astronomical Observatory (1876 – 1986)

(2014) A. J. P. Aparicio et al.   SOLAR PHYSICS

Sunspot Catalogue of the Valencia Observatory (1920 – 1928)

(2014) V. M. S. Carrasco et al.   SOLAR PHYSICS

Revisiting the Sunspot Number

(2014) Frédéric Clette et al.   SPACE SCIENCE REVIEWS

Sunspot positions and sizes for 1825–1867 from the observations by Samuel Heinrich Schwabe

(2013) R. Arlt et al.   MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

Long-term research: Slow science

(2013) Brian Owens   NATURE

Forty two years counting spots: Solar observations by D.E. Hadden during 1890–1931 revisited

(2013) V.M.S. Carrasco et al.   NEW ASTRONOMY

Revised Group Sunspot Number Values for 1640, 1652, and 1741

(2013) J. M. Vaquero et al.   SOLAR PHYSICS

The solar differential rotation in the 18th century

(2012) R. Arlt et al.   ASTRONOMY & ASTROPHYSICS

Survey and Merging of Sunspot Catalogs

(2012) Laure Lefevre et al.   SOLAR PHYSICS

ENIGMA OF THE SOLAR CYCLE 4 STILL NOT RESOLVED

(2011) N. V. Zolotova et al.   ASTROPHYSICAL JOURNAL

REVISITED SUNSPOT DATA: A NEW SCENARIO FOR THE ONSET OF THE MAUNDER MINIMUM

(2011) José M. Vaquero et al.   Astrophysical Journal Letters

A Simple Method to Check the Reliability of Annual Sunspot Number in the Historical Period 1610 – 1847

(2011) J. M. Vaquero et al.   SOLAR PHYSICS

Secular variation of hemispheric phase differences in the solar cycle

(2010) N.V. Zolotova et al.   ASTRONOMISCHE NACHRICHTEN

A SOLAR CYCLE LOST IN 1793-1800: EARLY SUNSPOT OBSERVATIONS RESOLVE THE OLD MYSTERY

(2009) Ilya G. Usoskin et al.   ASTROPHYSICAL JOURNAL

A homogeneous database of sunspot areas covering more than 130 years

(2009) L. A. Balmaceda et al.   JOURNAL OF GEOPHYSICAL RESEARCH

The Butterfly Diagram in the Eighteenth Century

(2009) R. Arlt   SOLAR PHYSICS