Zobrazeno 1 - 10
of 104
pro vyhledávání: '"A. Smponias"'
Autor:
Smponias, Theodoros
Publikováno v:
Galaxies 2021, 9(4), 80
Microquasar binary stellar systems emit electromagnetic radiation and high-energy particles over a broad energy spectrum. However, they are so far away that it is hard to observe their details. A simulation offers the link between relatively scarce o
Externí odkaz:
http://arxiv.org/abs/2311.08509
Autor:
Smponias, Theodoros
Microquasar stellar systems emit electromagnetic radiation and high-energy particles. Thanks to their location within our own galaxy, they can be observed in high detail. Still, many of their inner workings remain elusive; hence, simulations, as the
Externí odkaz:
http://arxiv.org/abs/2311.07694
Publikováno v:
Physical Review A 105, 052604 (2022)
We consider a nanostructure consisting of a semiconductor quantum dot coupled to a metal nanoparticle, and show with numerical simulations that the exciton state of the quantum dot can be robustly generated from the ground state even for small interp
Externí odkaz:
http://arxiv.org/abs/2212.13204
Publikováno v:
Journal of Applied Physics 129, 223104 (2021)
We study the potential for controlled transfer of population to the biexciton state of a semiconductor quantum dot coupled with a metal nanoparticle, under the influence of an electromagnetic pulse with hyperbolic secant shape, and derive analytical
Externí odkaz:
http://arxiv.org/abs/2112.13773
Publikováno v:
Optics Letters 45, 6090 (2020)
We show that for the two widely used configurations of the double-$\Lambda$ atom-light coupling scheme, one where the control fields are applied in the same $\Lambda$-subsystem and another where they applied in different $\Lambda$-subsystems, the for
Externí odkaz:
http://arxiv.org/abs/2112.13615
Autor:
Kosmas, Odysseas, Smponias, Theodoros
In this work, we simulate $\gamma$-rays created in the hadronic jets of the compact object in binary stellar systems known as microquasars. We utilize as main computational tool the $3$-D relativistic magneto-hydro-dynamical code PLUTO combined with
Externí odkaz:
http://arxiv.org/abs/1808.00303
Autor:
Smponias, Theodoros, Kosmas, Odysseas
The hadronic jets in a micro-quasar stellar system are modelled with the relativistic hydrocode PLUTO. We focus on neutrino emission from such jets produced by fast proton (non-thermal) collisions on thermal ones within the hadronic jet. We adopt a s
Externí odkaz:
http://arxiv.org/abs/1706.03087
Autor:
Theodoros Smponias
Publikováno v:
Galaxies, Vol 11, Iss 6, p 110 (2023)
Microquasar stellar systems emit electromagnetic radiation and high-energy particles. Thanks to their location within our own galaxy, they can be observed in high detail. Still, many of their inner workings remain elusive; hence, simulations, as the
Externí odkaz:
https://doaj.org/article/af470ea6284d4ba984882ad3bb95ee64
Autor:
Smponias, T., Kosmas, T. S.
The emission of $\gamma$-rays in jets emanating from the vicinity of collapsed stellar remnants, in binary systems known as microquasars, is investigated using a three dimensional relativistic hydrocode (PLUTO), in combination with two in-house radia
Externí odkaz:
http://arxiv.org/abs/1312.2470
Autor:
Athanasios Smponias, Dionisis Stefanatos, George P. Katsoulis, Ioannis Thanopulos, Emmanuel Paspalakis
Publikováno v:
Nanomaterials, Vol 12, Iss 18, p 3098 (2022)
We consider a hybrid nanostructure composed of a semiconductor quantum dot placed near a spherical metallic nanoparticle, and study the effect of the nanoparticle on the population transferral from the ground to the biexciton state of the quantum dot
Externí odkaz:
https://doaj.org/article/5dfe7382ee8d432fbe78368b4cf2264f