Zobrazeno 1 - 10
of 17
pro vyhledávání: '"V. M. S. Carrasco"'
Autor:
V. M. S. Carrasco, A. J. P. Aparicio, T. Chatzistergos, S. Jamali Jaghdani, H. Hayakawa, M. C. Gallego, J. M. Vaquero
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 2, p 65 (2024)
The Maunder Minimum was a period with significantly reduced solar activity between 1645 and 1715, approximately. The transition between the low solar activity in the Maunder Minimum and the subsequent “normal” regime of solar activity was gradual
Externí odkaz:
https://doaj.org/article/8b6ae801934d4efcbdde38f966c2ed3f
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 269, Iss 2, p 53 (2023)
Angelo Secchi, an Italian Jesuit and prominent scientist of the 19th century, and one of the founders of modern astrophysics, observed the Sun regularly at the Collegio Romano in Rome, Italy, for more than 25 yr. Results from his observations are rep
Externí odkaz:
https://doaj.org/article/2b49b0716b1c4593b60daea540d5d40d
Publikováno v:
History of Geo- and Space Sciences, Vol 9, Pp 133-139 (2018)
An analysis is made of the records made by Spanish observers of a notable aurora on 18 January 1770 in order to study the characteristics of this event. The records indicate that the phenomenon was observed in both continental and insular territor
Externí odkaz:
https://doaj.org/article/8589eaab10dd403699c3e0cfe55fb7ca
Publikováno v:
Solar Physics. 298
In this work, we present hemispheric sunspot number counts made in the Astronomical Observatory of the University of Valencia for the period 1940 – 1956. We found these data in a secondary source (the bulletins of the Madrid Astronomical Observator
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcfbd2dbc69119e9c4628032f714c038
https://doi.org/10.1007/s11207-023-02143-4
https://doi.org/10.1007/s11207-023-02143-4
Autor:
J. C. Peguero, V. M. S. Carrasco
Publikováno v:
Solar Physics. 298
The sunspot number is the most used solar-activity index to study the behavior of solar activity. In this work, we reproduce the methodology of Coban, Raheem, and Cavus (Solar Phys. 296, 156, 2021) using a long short-term memory model with daily data
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a826581b4abb6af04a2e0744ad5c825
https://doi.org/10.1007/s11207-023-02140-7
https://doi.org/10.1007/s11207-023-02140-7
Autor:
F. Clette, L. Lefèvre, T. Chatzistergos, H. Hayakawa, V. M. S. Carrasco, R. Arlt, E. W. Cliver, T. Dudok de Wit, T. K. Friedli, N. Karachik, G. Kopp, M. Lockwood, S. Mathieu, A. Muñoz-Jaramillo, M. Owens, D. Pesnell, A. Pevtsov, L. Svalgaard, I. G. Usoskin, L. van Driel-Gesztelyi, J. M. Vaquero
Publikováno v:
Solar Physics. 298
We report progress on the ongoing recalibration of the Wolf sunspot number (SN) and Group sunspot number (GN) following the release of version 2.0 of SN in 2015. This report constitutes both an update of the efforts reported in the 2016 Topical Issue
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da4e96144cf9dcc3e35452eb4e28f255
https://doi.org/10.1007/s11207-023-02136-3
https://doi.org/10.1007/s11207-023-02136-3
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 512:5715-5716
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bedeb40ee9e140842fd3055a2d1290e0
https://doi.org/10.1093/mnras/stac901
https://doi.org/10.1093/mnras/stac901
Publikováno v:
The Astrophysical Journal. 933:26
Long-term solar activity can be studied using several parameters. Some of the most used are based on the sunspot counting. The active day fraction (ADF) is the simplest index derived from this counting. It is reliable in periods of low solar activity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4cc1660f3aed761ac854767386fb371
https://doi.org/10.3847/1538-4357/ac7045
https://doi.org/10.3847/1538-4357/ac7045
Publikováno v:
The Astrophysical Journal. 927:193
Christoph Scheiner was one of the most outstanding astronomers in the history of sunspot observations. His book, Rosa Ursina, is the reference work regarding the study of the earliest sunspot records. The sunspot observations compiled by Scheiner in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c967df08fab101213a727cbb58dd37cd
https://doi.org/10.3847/1538-4357/ac52ee
https://doi.org/10.3847/1538-4357/ac52ee
Autor:
V. M. S. Carrasco
Publikováno v:
The Astrophysical Journal. 922:58
Cornelis Tevel made sunspot observations during the period 1816–1836, including the Dalton Minimum. In this work, the first revision of these observations since Wolf incorporated them into his database is presented. On the one hand, the number of i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6908de2f83da84972ad724d169ca035d
https://doi.org/10.3847/1538-4357/ac24a5
https://doi.org/10.3847/1538-4357/ac24a5