Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Silva P. Järvinen"'
Autor:
Ekaterina Ilin, James R. A. Davenport, Sarah J. Schmidt, Julián D. Alvarado-Gómez, Ilya Ilyin, Mahmoudreza Oshagh, Katja Poppenhaeger, Elisabeth R. Newton, Silva P. Järvinen, J. Sebastian Pineda
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 507:1723-1745
White-light flares are magnetically driven localized brightenings on the surfaces of stars. Their temporal, spectral, and statistical properties present a treasury of physical information about stellar magnetic fields. The spatial distributions of ma
Autor:
Swetlana Hubrig, Silva P. Järvinen, H. Adigozalzade, Ilya Ilyin, Viktor Khalack, Gautier Mathys
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 499:2734-2743
High resolution spectropolarimetric observations of the strongly magnetic, super-slowly rotating rapidly oscillating Ap star HD166473 are used to investigate the implications of the presence of a variable strong magnetic field on the vertical and sur
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 491:281-288
The first FORS2 spectropolarimetric observation of the longitudinal magnetic field of HD54879 of the order of -600G with a lower limit of the dipole strength of ~2kG dates back to 2014. Since then observations showed a gradual decrease of the absolut
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 481:5163-5169
HD 21190 is a known $\delta$ Scuti star showing Ap star characteristics and a variability period of 3.6 h discovered by the Hipparcos mission. Using Gaia DR1 data for an astrometric analysis, it was recently suggested that HD 21190 forms a physical b
Magnetic field geometry and magnetospheric environment of the strongly magnetic Of?p star NGC 1624-2
NGC 1624-2 is an O7f?p star with a reported probable polar magnetic field strength $\ge$ 20 kG, which is the strongest magnetic field ever measured in an O-type star. We study the variability of the mean longitudinal magnetic field $\langle B_z \rang
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45d3e814f303dec6ec729744e4d7d602
http://arxiv.org/abs/2101.00899
http://arxiv.org/abs/2101.00899
We present the first short time scale observations of the roAp star gamma Equ in linear polarized light obtained with the PEPSI polarimeter installed at the LBT. These observations are used to search for pulsation variability in Stokes Q and U line p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3c17b0b37eecdc181b3a56a74da42ad
Magnetic fields in Wolf-Rayet (WR) stars are not well explored, although there is indirect evidence, e.g. from spectral variability and X-ray emission, that magnetic fields should be present in these stars. Being in an advanced stage of their evoluti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbaba47a297eee2ae1e62af9f7bd0b8d
http://arxiv.org/abs/2010.00983
http://arxiv.org/abs/2010.00983
Autor:
Krzysztof Kamiński, Ernst Paunzen, Jan Janík, Olga Pintado, Swetlana Hubrig, Monika K. Kamińska, S. Hümmerich, Silva P. Järvinen, P. Zielinski, Klaus Bernhard, Luciano Fraga, J. Tokarek, Przemysław Walczak, Marek Skarka, Jiří Krtička, M. Prišegen, Ilya Ilyin, Miloslav Zejda, Miroslav Jagelka, Zdeněk Mikulášek, T. Pribulla, E. Niemczura
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Chemically peculiar (CP) stars of the upper main sequence are characterised by specific anomalies in the photospheric abundances of some chemical elements. The group of CP2 stars, which encompasses classical Ap and Bp stars, exhibits strictly periodi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a216059065d00d53c0ba67c4561b8427
http://arxiv.org/abs/2008.02833
http://arxiv.org/abs/2008.02833
Autor:
Markus Schöller, Heidi Korhonen, Ilya Ilyin, Swetlana Hubrig, E. Niemczura, Silva P. Järvinen, S D Chojnowski
The main-sequence mercury-manganese (HgMn) stars are known to exhibit large overabundances of exotic elements and, similar to magnetic Ap/Bp stars, are spectrum variables, implying the presence of an inhomogeneous element distribution over the stella
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39145ea750f5386d0ddb674d8e665c6f
Autor:
J. Robrade, Gautier Mathys, Silva P. Järvinen, Markus Schöller, C. A. Hummel, S. Hubrig, D. W. Kurtz
The Bp star HD94660 is a single-lined spectroscopic binary. Some authors have suggested that the unseen companion of at least 2M_sun may be a compact object. We intend to study this multiple system in detail, especially to learn more about the so-far
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55bfb2d38686836e56f78e5eb700d51c