Zobrazeno 1 - 10
of 191
pro vyhledávání: '"Barata Teresa"'
Publikováno v:
Open Astronomy, Vol 28, Iss 1, Pp 165-179 (2019)
In 2020, the Geophysical and Astronomical Observatory of the University of Coimbra will celebrate the 95th anniversary of its first spectroheliographic observation. Keeping a daily service of solar observations since then, making almost a century, le
Externí odkaz:
https://doaj.org/article/4a9f9415dffe446e93914ff26f151bf4
Autor:
Wagner, Andreas, Bourgeois, Slava, Kilpua, Emilia K. J., Sarkar, Ranadeep, Price, Daniel J., Kumari, Anshu, Pomoell, Jens, Poedts, Stefaan, Barata, Teresa, Erdélyi, Robertus, Oliveira, Orlando, Gafeira, Ricardo
We present a magnetic flux rope (FR) extraction tool for solar coronal magnetic field modelling data, which builds upon the methodology from Wagner et al. (2023). We apply the scheme to magnetic field simulations of active regions AR12473 and AR11176
Externí odkaz:
http://arxiv.org/abs/2312.00673
Autor:
Lilensten Jean, Dumbović Mateja, Spogli Luca, Belehaki Anna, Van der Linden Ronald, Poedts Stefaan, Barata Teresa, Bisi Mario M., Cessateur Gaël, De Donder Erwin, Guerrero Antonio, Kilpua Emilia, Korsos Marianna B., Pinto Rui F., Temmer Manuela, Tsagouri Ioanna, Urbář Jaroslav, Zuccarello Francesca
Publikováno v:
Journal of Space Weather and Space Climate, Vol 11, p 26 (2021)
This paper was written by a group of European researchers believing that now is the right time to frame the Space Weather and Space Climate discipline in Europe for future years. It is devoted to openly discussing the organisation and sustainability
Externí odkaz:
https://doaj.org/article/b2afde04af2a436d88fdf69bc3000540
Autor:
Chatzistergos, Theodosios, Ermolli, Ilaria, Banerjee, Dipankar, Barata, Teresa, Chouinavas, Ioannis, Falco, Mariachiara, Gafeira, Ricardo, Giorgi, Fabrizio, Hanaoka, Yoichiro, Krivova, Natalie A., Korokhin, Viktor V., Lourenço, Ana, Marchenko, Gennady P., Malherbe, Jean-Marie, Peixinho, Nuno, Romano, Paolo, Sakurai, Takashi
Publikováno v:
A&A 680, A15 (2023)
Full disc observations of the Sun in the H$\alpha$ line provide information about the solar chromosphere and in particular about the filaments, which are dark and elongated features that lie along magnetic field polarity inversion lines. This makes t
Externí odkaz:
http://arxiv.org/abs/2309.09591
A regression-based model was previously developed to forecast the total electron content (TEC) at middle latitudes. We present a more sophisticated model using neural networks (NN) instead of linear regression. This regional model prototype simulates
Externí odkaz:
http://arxiv.org/abs/2306.01512
Autor:
Chatzistergos, Theodosios, Ermolli, Ilaria, Krivova, Natalie A., Barata, Teresa, Carvalho, Sara, Malherbe, Jean-Marie
Publikováno v:
A&A 667, A167 (2022)
Studies and reconstructions of past solar activity require data on sunspots as well as faculae/plage and network. Such data are also important for understanding the magnetic activity and variability of the Sun and Sun-like stars. The longest availabl
Externí odkaz:
http://arxiv.org/abs/2209.07077
The total electron content (TEC) over the Iberian Peninsula was modelled using PCA-MRM models based on decomposition of the observed TEC series using the principal component analysis (PCA) and reconstruction of the daily modes amplitudes by a multipl
Externí odkaz:
http://arxiv.org/abs/2201.03477
Autor:
Lourenço, Ana, Gafeira, Ricardo, Bonifacio, Vitor, Barata, Teresa, Fernandes, Joao, Silva, Eva
The present work aims to validate the positions of solar filaments published in the Annals of Coimbra University Astronomical Observatory, currently the Geophysical and Astronomical Observatory of the University of Coimbra, corresponding to years 192
Externí odkaz:
http://arxiv.org/abs/2108.05978
Autor:
Chatzistergos, Theodosios, Ermolli, Ilaria, Krivova, Natalie A., Solanki, Sami K., Banerjee, Dipankar, Barata, Teresa, Belik, Marcel, Gafeira, Ricardo, Garcia, Adriana, Hanaoka, Yoichiro, Hegde, Manjunath, Klimeš, Jan, Korokhin, Viktor V., Lourenço, Ana, Malherbe, Jean-Marie, Marchenko, Gennady P., Peixinho, Nuno, Sakurai, Takashi, Tlatov, Andrey G.
Publikováno v:
A&A 639, A88 (2020)
We derive the plage area evolution over the last 12 solar cycles employing data from all Ca II K archives available publicly in digital form known to us, including several as yet unexplored Ca II K archives. We analyse more than 290,000 full-disc Ca
Externí odkaz:
http://arxiv.org/abs/2005.01435
Publikováno v:
Data in Brief, 31, 105966 (2020)
Here we present datasets provided by a SCINDA GNSS receiver installed in the Lisbon airport area from November of 2014 to July of 2019. The installed equipment is a NovAtel EURO4 with a JAVAD Choke-Ring antenna. The data are in an archived format and
Externí odkaz:
http://arxiv.org/abs/2002.08883