Zobrazeno 1 - 10
of 5 566
pro vyhledávání: '"Hajdú, Á"'
Diophantine tuples are of ancient and modern interest, with a huge literature. In this paper we study Diophantine graphs, i.e., finite graphs whose vertices are distinct positive integers, and two vertices are linked by an edge if and only if their p
Externí odkaz:
http://arxiv.org/abs/2410.20120
Autor:
García, G. Rojas, Graczyk, D., Pietrzyński, G., Gałan, C., Gieren, W., Thompson, I., Suchomska, K., Kałuszyński, M., Soszyński, I., Udalski, A., Karczmarek, P., Narloch, W., Górski, M., Wielgórski, P., Zgirski, B., Miller, N., Hajdu, G., Pilecki, B., Taormina, M., Lewis, M.
Detached eclipsing binaries (DEBs) allow for the possibility of precise characterization of its stellar components. They offer a unique opportunity to derive their physical parameters in a near-model-independent way for a number of systems consisting
Externí odkaz:
http://arxiv.org/abs/2410.18619
We investigate the critical behavior of the Kondo compensation in the presence of a power-law pseudogap in the density of states, $\varrho(\omega)\sim |\omega|^\epsilon$. For $\epsilon<1$, this model exhibits a quantum phase transition from a partial
Externí odkaz:
http://arxiv.org/abs/2410.15422
Autor:
Hajdu, L., Tijdeman, R.
This paper is the continuation of \cite{htl}, where we deal with Lucas sequences. Here we study integers represented by integer sequences which satisfy binary recursive relations. In case of non-degenerate sequences we give bounds for the highest ind
Externí odkaz:
http://arxiv.org/abs/2408.04986
Autor:
Hajdu, L., Tijdeman, R.
In this paper we study the sets of integers which are $n$-th terms of Lucas sequences. We establish lower- and upper bounds for the size of these sets. These bounds are sharp for $n$ sufficiently large. We also develop bounds on the growth order of t
Externí odkaz:
http://arxiv.org/abs/2408.04982
Autor:
Zgirski, Bartłomiej, Gieren, Wolfgang, Pietrzyński, Grzegorz, Górski, Marek, Wielgórski, Piotr, Storm, Jesper, Bras, Garance, Kervella, Pierre, Nardetto, Nicolas, Hajdu, Gergely, Chini, Rolf, Haas, Martin
Publikováno v:
A&A 690, A295 (2024)
The Baade-Wesselink method allows us to estimate distances to individual pulsating stars. Accurate geometric parallaxes obtained by the Gaia mission serve us in the calibration of the method and in the determination of its precision. The method also
Externí odkaz:
http://arxiv.org/abs/2408.02102
Autor:
Wielgórski, Piotr, Pietrzyński, Grzegorz, Gieren, Wolfgang, Zgirski, Bartłomiej, Górski, Marek, Storm, Jesper, Nardetto, Nicolas, Kervella, Pierre, Bras, Garance, Hajdu, Gergely, Hocdé, Vincent, Pilecki, Bogumił, Narloch, Weronika, Karczmarek, Paulina, Pych, Wojciech, Chini, Rolf, Hodapp, Klaus
Type II Cepheids are old pulsating stars that can be used to trace the distribution of an old stellar population and to measure distances to globular clusters and galaxies within several megaparsecs. One method that can be used to measure the distanc
Externí odkaz:
http://arxiv.org/abs/2406.16561
Autor:
Narloch, W., Hajdu, G., Pietrzynski, G., Gieren, W., Zgirski, B., Wielgorski, P., Karczmarek, P., Gorski, M., Graczyk, D.
RR Lyrae stars are excellent tracers of the old population II due to their period-luminosity (PL) and period-luminosity-metallicity (PLZ) relations. While these relations have been investigated in detail in many photometric bands, there are few compr
Externí odkaz:
http://arxiv.org/abs/2406.12408
Autor:
Taormina, Mónica, Kudritzki, R. -P., Pilecki, B., Pietrzyński, G., Thompson, I. B., Puls, J., Górski, M., Zgirski, B., Graczyk, D., Gieren, W., Hajdu, G.
We present the results from a complex study of an eclipsing O-type binary (Aa+Ab) with the orbital period $P_{A}=3.2254367$ days, that forms part of a higher-order multiple system in a configuration (A+B)+C. We derived masses of the Aa+Ab binary $M_{
Externí odkaz:
http://arxiv.org/abs/2404.02970
Autor:
Rathour, Rajeev Singh, Hajdu, Gergely, Smolec, Radosław, Karczmarek, Paulina, Hocdé, Vincent, Ziółkowska, Oliwia, Soszyński, Igor, Udalski, Andrzej
Publikováno v:
A&A 686, A268 (2024)
Period change studies give a window to probe into the evolution and dynamics of Cepheids. While evolutionary period changes have been well studied both observationally and theoretically, non-evolutionary period changes lack a systematic and quantitat
Externí odkaz:
http://arxiv.org/abs/2403.14039