Zobrazeno 1 - 10
of 1 284
pro vyhledávání: '"A. Skopal"'
Autor:
Skopal, Augustin, Shagatova, Natalia
Publikováno v:
A&A 680, A60 (2023)
Observational indications of wind-mass transfer from an evolved giant to its distant white dwarf (WD) companion in symbiotic binaries are rare. Here, we present a way to examine the neutral wind from the giant in symbiotic binaries, which is temporar
Externí odkaz:
http://arxiv.org/abs/2310.13133
Autor:
Shagatova, N., Skopal, A., Kundra, E., Komžík, R., Shugarov, S. Yu., Pribulla, T., Krushevska, V.
Publikováno v:
A&A 676, A98 (2023)
Context. Non-dusty late-type giants without a corona and large-scale pulsations represent objects that do not fulfil the conditions under which standard mass-loss mechanisms can be applied efficiently. The driving mechanism of their winds is still un
Externí odkaz:
http://arxiv.org/abs/2307.04423
Autor:
Skopal, Augustin
Accretion of mass onto a white dwarf (WD) in a binary system can lead to stellar explosions. If a WD accretes from stellar wind of a distant evolved giant in a symbiotic binary, it can undergo occasional outbursts in which it brightens by several mag
Externí odkaz:
http://arxiv.org/abs/2305.04220
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 2, Iss 1, Pp 277-281 (2015)
BF Cygni is a classical symbiotic binary. Its optical light curve occasionally shows outbursts of the Z And-type, whose nature is not well understood. During the 2006 August, BF Cyg underwent the recent outburst, and continues its active phase to the
Externí odkaz:
https://doaj.org/article/6797cf54a13c4c15950f98d19c890dc3
Autor:
M. Sekeráš, A. Skopal
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 2, Iss 1, Pp 282-285 (2015)
Symbiotic stars are long-period interacting binaries consisting of a cool giant as the donor star and a white dwarf as the acretor. Due to acretion of the material from the giant’s stellar wind, the white dwarf becomes very hot and luminous. The ci
Externí odkaz:
https://doaj.org/article/8df0e592fc4f470c8b824b2ed5f27cf2
Autor:
Skopal, Augustin
Classical supersoft X-ray sources (SSSs) are understood as close binary systems in which a massive white dwarf (WD) accretes from its companion at rates sustaining steady hydrogen burning on its surface generating bolometric luminosities of $10^{36}-
Externí odkaz:
http://arxiv.org/abs/2209.02524
Autor:
Simona Dobešová Cakirpaloglu, Panajotis Cakirpaloglu, Ondřej Skopal, Barbora Kvapilová, Tereza Schovánková, Šárka Vévodová, Jane Peta Greaves, Alison Steven
Publikováno v:
Frontiers in Psychology, Vol 15 (2024)
IntroductionStress and burnout can negatively affect performance, mental health, and the overall well-being of healthcare workers. The study aims to examine the prevalence of stress and burnout, and investigate links between stress, burnout, mental s
Externí odkaz:
https://doaj.org/article/0c5214a20c63431c839299ea018d368d
Autor:
Rotterova, Pavla, Alaghehbandan, Reza, Skopal, Josef, Rogala, Joanna, Slisarenko, Maryna, Strakova Peterikova, Andrea, Michalova, Kvetoslava, Montiel, Delia Perez, Farcas, Mihaela, Ulamec, Monika, Stransky, Petr, Jr, Fiala, Ondrej, Pitra, Tomas, Hora, Milan, Michal, Michal, Pivovarcikova, Kristyna, Hes, Ondrej
Publikováno v:
In Annals of Diagnostic Pathology August 2024 71
Publikováno v:
A&A 646, A116 (2021)
Context. The structure of the wind from the cool giants in symbiotic binaries carries important information for understanding the wind mass transfer to their white dwarf companions and its fuelling. Aims. In this paper, we indicate a non-spherical di
Externí odkaz:
http://arxiv.org/abs/2012.08417
Autor:
Chochol, Drahomír, Shugarov, Sergey, Hambálek, Ľubomír, Skopal, Augustin, Parimucha, Štefan, Dubovský, Pavol
Publikováno v:
2019, Proceedings of Science GOLDEN2019, 29
On 2018, April 29, a bright classical nova (CN) Per 2018 was discovered. Its progenitor is a well-known dwarf nova V392 Per. In this contribution, we analyze $UBVR_{C}I_{C}$ photometry and optical spectroscopy of the CN V392 Per. From the $V$ light c
Externí odkaz:
http://arxiv.org/abs/2007.13337