Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Gerlach, Enrico"'
We study the characteristics of chaos evolution of initially localized energy excitations in the one-dimensional nonlinear disordered Klein-Gordon lattice of anharmonic oscillators, by computing the time variation of the fundamental frequencies of th
Externí odkaz:
http://arxiv.org/abs/2112.04190
Autor:
Hillebrand, Malcolm, Manda, Bertin Many, Kalosakas, George, Gerlach, Enrico, Skokos, Charalampos
We study the chaotic dynamics of graphene structures, considering both a periodic, defect free, graphene sheet and graphene nanoribbons (GNRs) of various widths. By numerically calculating the maximum Lyapunov exponent, we quantify the chaoticity for
Externí odkaz:
http://arxiv.org/abs/2003.09296
We present several methods, which utilize symplectic integration techniques based on two and three part operator splitting, for numerically solving the equations of motion of the disordered, discrete nonlinear Schr\"odinger (DDNLS) equation, and comp
Externí odkaz:
http://arxiv.org/abs/1512.07778
Autor:
Anglada-Escudé, Guillem, Tuomi, Mikko, Arriagada, Pamela, Zechmeister, Mathias, Jenkins, James S., Ofir, Aviv, Dreizler, Stefan, Gerlach, Enrico, Marvin, Chistopher J., Reiners, Ansgar, Jeffers, Sandra V., Butler, Paul, Vogt, Steven S., Amado, Pedro J., Rodríguez-López, Cristina, Berdiñas, Zaira M., Morin, Julien, Crane, Jeffrey D., Shectman, Stephen A., Díaz, Matías, Sarmiento, Luis F., Jones, Hugh R. A.
Stellar activity may induce Doppler variability at the level of a few m/s which can then be confused by the Doppler signal of an exoplanet orbiting the star. To first order, linear correlations between radial velocity measurements and activity indice
Externí odkaz:
http://arxiv.org/abs/1506.09072
Autor:
Gerlach, Enrico
Gegenstand dieser Dissertation ist eine umfassende Analyse der Stabilität von Asteroidenbahnen im Edgeworth-Kuiper-Gürtel am Beispiel der 3:5-, 4:7- und der 1:2-Bahnresonanz mit Neptun. Einen weiteren Schwerpunkt der Arbeit bildet die Untersuchung
Externí odkaz:
https://tud.qucosa.de/id/qucosa%3A23689
https://tud.qucosa.de/api/qucosa%3A23689/attachment/ATT-0/
https://tud.qucosa.de/api/qucosa%3A23689/attachment/ATT-0/
Autor:
Anglada-Escudé, Guillem, Arriagada, Pamela, Tuomi, Mikko, Zechmeister, Mathias, Jenkins, James S., Ofir, Aviv, Dreizler, Stefan, Gerlach, Enrico, Marvin, Chris J., Reiners, Ansgar, Jeffers, Sandra V., Butler, R. Paul, Vogt, Steven S., Amado, Pedro J., Rodríguez-López, Cristina, Berdiñas, Zaira M., Morin, Julian, Crane, Jeff D., Shectman, Stephen A., Thompson, Ian B., Díaz, Matías, Rivera, Eugenio, Sarmiento, Luis F., Jones, Hugh R. A.
Exoplanets of a few Earth masses can be now detected around nearby low-mass stars using Doppler spectroscopy. In this paper, we investigate the radial velocity variations of Kapteyn's star, which is both a sub-dwarf M-star and the nearest halo object
Externí odkaz:
http://arxiv.org/abs/1406.0818
Autor:
Anglada-Escudé, Guillem, Tuomi, Mikko, Gerlach, Enrico, Barnes, Rory, Heller, René, Jenkins, James S., Wende, Sebastian, Vogt, Steven S., Butler, R. Paul, Reiners, Ansgar, Jones, Hugh R. A.
Since low-mass stars have low luminosities, orbits at which liquid water can exist on Earth-sized planets are relatively close-in, which produces Doppler signals that are detectable using state-of-the-art Doppler spectroscopy. GJ 667C is already know
Externí odkaz:
http://arxiv.org/abs/1306.6074
Autor:
Gerlach, Enrico, Eggl, Siegfried, Skokos, Charalampos, Bodyfelt, Joshua D., Papamikos, Georgios
Symplectic integration methods based on operator splitting are well established in many branches of science. For Hamiltonian systems which split in more than two parts, symplectic methods of higher order have been studied in detail only for a few spe
Externí odkaz:
http://arxiv.org/abs/1306.0627
Autor:
Tuomi, Mikko, Anglada-Escude, Guillem, Gerlach, Enrico, Jones, Hugh R. R., Reiners, Ansgar, Rivera, Eugenio J., Vogt, Steven S., Butler, R. Paul
The K2.5 dwarf HD 40307 has been reported to host three super-Earths. The system lacks massive planets and is therefore a potential candidate for having additional low-mass planetary companions. We re-derive Doppler measurements from public HARPS spe
Externí odkaz:
http://arxiv.org/abs/1211.1617
Autor:
Gerlach, Enrico, Haghighipour, Nader
Prior to the detection of its outermost Uranus-mass object, it had been suggested that GJ 876 could host an Earth-sized planet in a 15-day orbit. Observation, however, did not support this idea, but instead revealed evidence for the existence of a la
Externí odkaz:
http://arxiv.org/abs/1202.5865