Zobrazeno 1 - 10
of 496
pro vyhledávání: '"Vida, K."'
Autor:
Kővári, Zs., Strassmeier, K. G., Kriskovics, L., Oláh, K., Borkovits, T., Seli, B., Vida, K., Radványi, Á.
Tidal forces in close binaries and multiple systems that contain magnetically active component are supposed to influence the operation of magnetic dynamo. Through synchronization the tidal effect of a close companion helps maintain fast rotation, thu
Externí odkaz:
http://arxiv.org/abs/2408.16438
On the Sun, the energetic, erupting phenomena of flares and coronal mass ejections (CMEs) often occur together. While space-based photometry has revealed frequent white-light flares for vast numbers of stars, only a handful of coronal mass ejections
Externí odkaz:
http://arxiv.org/abs/2407.11461
Autor:
Moór, A., Ábrahám, P., Su, K. Y. L., Henning, T., Marino, S., Chen, L., Kóspál, Á., Pawellek, N., Varga, J., Vida, K.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 528, Issue 3, March 2024, pp.4528-4546
Extreme debris discs (EDDs) are bright and warm circumstellar dusty structures around main sequence stars. They may represent the outcome of giant collisions occuring in the terrestrial region between large planetesimals or planetary bodies, and thus
Externí odkaz:
http://arxiv.org/abs/2402.15438
Autor:
Kovari, Zs., Strassmeier, K. G., Kriskovics, L., Olah, K., Borkovits, T., Radvanyi, A., Granzer, T., Seli, B., Vida, K., Weber, M.
We are conducting a comprehensive investigation of V815 Her using photometric and spectroscopic data to understand the origin of the activity and what influences it in the short and long term. Using TESS photometry we performed light curve modeling i
Externí odkaz:
http://arxiv.org/abs/2312.08416
Autor:
Ertini, K., Folatelli, G., Martinez, L., Bersten, M. C., Anderson, J. P., Ashall, C., Baron, E., Bose, S., Brown, P. J., Burns, C., DerKacy, J. M., Ferrari, L., Galbany, L., Hsiao, E., Kumar, S., Lu, J., Mazzali, P., Morrell, N., Orellana, M., Pessi, P. J., Phillips, M. M., Piro, A. L., Polin, A., Shahbandeh, M., Shappee, B. J., Stritzinger, M., Suntzeff, N. B., Tucker, M., Elias-Rosa, N., Kuncarayakti, H., Gutiérrez, C. P., Kozyreva, A., Müller-Bravo, T. E., Chen, T. -W., Hinkle, J. T., Payne, A. V., Székely, P., Szalai, T., Barna, B., Könyves-Tóth, R., Bánhidi, D., Bíró, I. B., Csányi, I., Kriskovits, L., Pál, A., Szabó, Zs., Szakáts, R., Vida, K., Vinkó, J., Gromadzki, M., Harvey, L., Nicholl, M., Paraskeva, E., Young, D. R., Englert, B.
We present extensive ultraviolet (UV) and optical photometric and optical spectroscopic follow-up of supernova (SN)~2021gno by the "Precision Observations of Infant Supernova Explosions" (POISE) project, starting less than two days after the explosio
Externí odkaz:
http://arxiv.org/abs/2309.07800
EI Eridani: a star under the influence -- The effect of magnetic activity in the short and long term
Autor:
Kriskovics, L., Kővári, Zs., Seli, B., Oláh, K., Vida, K., Henry, G. W., Granzer, T., Görgei, A.
Publikováno v:
A&A 674, A143 (2023)
We use our photometric time series of more than forty years to analyze the long-term behaviour of EI Eri. Flare activity is investigated using space-borne photometric data obtained with TESS. The MUSICOS campaign aimed to achieve high-resolution spec
Externí odkaz:
http://arxiv.org/abs/2304.13234
In this experiment, we created a Multiple-Input Neural Network, consisting of Convolutional and Multi-layer Neural Networks. With this setup the selected highest-performing neural network was able to distinguish variable stars based on the visual cha
Externí odkaz:
http://arxiv.org/abs/2209.02310
Autor:
Szabó, Zs. M., Kóspál, Á., Ábrahám, P., Park, S., Siwak, M., Green, J. D., Pál, A., Acosta-Pulido, J. A., Lee, J. -E., Ibrahimov, M., Grankin, K., Kovács, B., Bora, Zs., Bódi, A., Cseh, B., Csörnyei, G., Drózdz, Marek, Hanyecz, O., Ignácz, B., Kalup, Cs., Könyves-Tóth, R., Krezinger, M., Kriskovics, L., Ogloza, Waldemar, Ordasi, A., Sárneczky, K., Seli, B., Szakáts, R., Szing, A., Vida, K., Vinkó, J.
Historically, FU Orionis-type stars are low-mass, pre-main sequence stars. The members of this class experience powerful accretion outbursts and remain in an enhanced accretion state for decades or centuries. V1515 Cyg, a classical FUor, started brig
Externí odkaz:
http://arxiv.org/abs/2206.12446
Autor:
Seli, B., Oláh, K., Kriskovics, L., Kővári, Zs., Vida, K., Balázs, L. G., Laming, J. M., van Driel-Gesztelyi, L., Baker, D.
Publikováno v:
A&A 659, A3 (2022)
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:
http://arxiv.org/abs/2111.14735
Autor:
Szabó, Zs. M., Kóspál, Á., Ábrahám, P., Park, S., Siwak, M., Green, J. D., Moór, A., Pál, A., Acosta-Pulido, J. A., Lee, J. -E., Cseh, B., Csörnyei, G., Hanyecz, O., Könyves-Tóth, R., Krezinger, M., Kriskovics, L., Ordasi, A., Sárneczky, K., Seli, B., Szakáts, R., Szing, A., Vida, K.
Publikováno v:
ApJ, 917, 80 (2021)
Among the low-mass pre-main sequence stars, a small group called FU Orionis-type objects (FUors) are notable for undergoing powerful accretion outbursts. V1057 Cyg, a classical example of an FUor, went into outburst around 1969-1970, after which it f
Externí odkaz:
http://arxiv.org/abs/2105.10405