Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Zs. Kővári"'
Autor:
Eike W. Guenther, Heidi Korhonen, Martin Leitzinger, Helmut Lammer, Levente Kriskovics, Robert Greimel, Krisztián Vida, Petra Odert, Zs. Kővári, Florian Koller, Arnold Hanslmeier
Publikováno v:
Leitzinger, M, Odert, P, Greimel, R, Vida, K, Kriskovics, L, Guenther, E W, Korhonen, H, Koller, F, Hanslmeier, A, Kovari, Z & Lammer, H 2020, ' A census of coronal mass ejections on solar-like stars ', Monthly Notices of the Royal Astronomical Society, vol. 493, no. 3, pp. 4570-4589 . https://doi.org/10.1093/mnras/staa504
Coronal Mass Ejections (CMEs) may have major importance for planetary and stellar evolution. Stellar CME parameters, such as mass and velocity, have yet not been determined statistically. So far only a handful of stellar CMEs has been detected mainly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28f1d087683ec3c1c5beb197f94dc72c
https://doi.org/10.1093/mnras/staa504
https://doi.org/10.1093/mnras/staa504
Publikováno v:
Astronomy & Astrophysics. 668:A101
Although late-type dwarfs and giant stars are substantially different, their flares are thought to originate in similar physical processes and differ only by a scale factor in the energy levels. We study the validity of this approach. We search for c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c33357d3cfc6f0fbffc651abb11ee146
https://doi.org/10.1051/0004-6361/202243789
https://doi.org/10.1051/0004-6361/202243789
Autor:
B. Seli, K. Oláh, L. Kriskovics, Zs. Kővári, K. Vida, L. G. Balázs, J. M. Laming, L. van Driel-Gesztelyi, D. Baker
The different elemental abundances of the photosphere and the corona are striking features of not only the Sun, but other stars as well. This phenomenon is known as the FIP effect (FIP stands for first ionization potential), and its strength can be c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbf98988e9097fed27c17bf494f141e0
http://arxiv.org/abs/2111.14735
http://arxiv.org/abs/2111.14735
Akademický článek
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Autor:
Bálint Seli, Katalin Oláh, T. A. Carroll, Petra Odert, Krisztián Vida, Martin Leitzinger, Levente Kriskovics, Tamás Borkovits, Zs. Kővári
We scrutinize the red dwarf component in the eclipsing binary system V471 Tau in order to unravel relations between different activity layers from the stellar surface through the chromosphere up to the corona. We aim at studying how the magnetic dyna
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f6ee1ed209fa93e4168c942431aa75d1
Autor:
Waqas Bhatti, Z. Csubry, G. Á. Bakos, Levente Kriskovics, K. Vida, Katalin Oláh, Zs. Kővári, Bálint Seli, Joel D. Hartman, Maximilian N. Günther
The most powerful superflares reaching 10$^{39}$erg bolometric energy are from giant stars. The mechanism behind flaring is supposed to be the magnetic reconnection, which is closely related to magnetic activity including starspots. However, it is po
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf9d7e46834b2045a5b24633a8068759
Young, fast rotating single stars can show dramatically different magnetic signatures and levels of magnetic activity as compared with the Sun. While losing angular momentum due to magnetic breaking and mass loss through stellar winds, the stars grad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44d9a34a9a72d48ef846036e50e7e637
http://arxiv.org/abs/1905.08310
http://arxiv.org/abs/1905.08310
Publikováno v:
Astronomy & Astrophysics. 647:A62
Aims. We aim to give a reliable estimate of the number of flaring giant stars in the Kepler field. By analyzing the flaring activity of these stars, we explored their flare statistics and the released flare energies. The role of oscillation in suppre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2392c7d24323479e7989325d675ff80
https://doi.org/10.1051/0004-6361/202039674
https://doi.org/10.1051/0004-6361/202039674
Autor:
Levente Kriskovics, Zs. Kővári, Krisztián Vida, Katalin Oláh, E. Forgács-Dajka, Klaus G. Strassmeier
Publikováno v:
ASTRON NACHRICH ASTRONOMISCHE NACHRICHTEN.
From our sample of spotted late-type stars showing surface differential rotation we find that the relationship between the rotation period and the surface shear coefficient $\alpha=\Delta\Omega/\Omega_{\rm eq}$ is significantly different for single s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a0007267b23c67281d70cb6827619da
http://hdl.handle.net/10831/49033
http://hdl.handle.net/10831/49033
Autor:
Th. Granzer, E. Kővári, O. Kovács, Levente Kriskovics, Klaus G. Strassmeier, Krisztián Vida, Katalin Oláh, T. A. Carroll, Marc Weber, Zs. Kővári
Context: Stars with about 1$-$2 solar masses at the red giant branch (RGB) represent an intriguing period of stellar evolution, i.e. when the convective envelope interacts with the fast-rotating core. During these mixing episodes freshly synthesized
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::577be16d90e2f348c15956acc5894991