Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Davide Astesiano"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 6, Pp 1-9 (2022)
Abstract We analyse the dynamics of a single disk galaxy from a general relativistic viewpoint. We investigate dark matter (DM) effects in terms of a known family of stationary axially-symmetric solutions of Einstein equations coupled to a rotating d
Externí odkaz:
https://doaj.org/article/12772a41d48e466daa65afcf753af196
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 4, Pp 1-64 (2022)
Abstract We classify the critical points of the effective black hole potential which governs the attractor mechanism taking place at the horizon of static dyonic extremal black holes in N $$ \mathcal{N} $$ = 2, D = 4 Maxwell-Einstein supergravity wit
Externí odkaz:
https://doaj.org/article/3143e3c2a33a406bb6953479113184d3
Autor:
Davide Astesiano, S.L. Cacciatori
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 12, Pp 1-22 (2021)
Abstract We find a new non BPS solution in N = 2 D = 4 gauged supergravity coupled to U(1) gauge fields and matter. It consists in a closed universe with two extremal black holes of equal size, surrounding two singularities. They have opposite magnet
Externí odkaz:
https://doaj.org/article/8e66f7e1db52411795391f2028895d64
Autor:
Matteo Luca Ruggiero, Davide Astesiano
Publikováno v:
Journal of Physics Communications, Vol 7, Iss 11, p 112001 (2023)
Gravitoelectromagnetic analogies are somewhat ubiquitous in General Relativity, and they are often used to explain peculiar effects of Einstein’s theory of gravity in terms of familiar results from classical electromagnetism. Perhaps, the best know
Externí odkaz:
https://doaj.org/article/da7d676b2e714cd3b92f38495c81deaa
Autor:
Davide Astesiano
Publikováno v:
General Relativity and Gravitation. 54
In this work we study the properties of rigidly rotating neutral dust solutions in general relativity. This class of solutions gained relevance recently due to applications to the dynamics of spiral galaxies. We show that this class could be interpre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::737f1b805e1f4b273f7f17258e6fd094
https://doi.org/10.1007/s10714-022-02947-y
https://doi.org/10.1007/s10714-022-02947-y
Autor:
Matteo Luca Ruggiero, Davide Astesiano
We study disc galaxies in the framework of General Relativity to focus on the possibility that, even in the low energy limit, there are relevant corrections with respect to the purely Newtonian approach. Our analysis encompasses the model both consid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77f86f84a3164e569ec4c5d191c6b0ed
http://arxiv.org/abs/2205.03091
http://arxiv.org/abs/2205.03091
Publikováno v:
Physical Review D. 105
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::197bb28180e3bdd6126fa1aa9ee1e27f
https://doi.org/10.1103/physrevd.105.086022
https://doi.org/10.1103/physrevd.105.086022
Autor:
Matteo Luca Ruggiero, Davide Astesiano
We use the gravitoelectromagnetic approach to the solutions of Einstein's equations in the weak-field and slow-motion approximation to investigate the impact of General Relativity on galactic dynamics. In particular, we focus on a class of the soluti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::219790845c2d5b4f625ce2d5069438cd
https://hdl.handle.net/2318/1882050
https://hdl.handle.net/2318/1882050
Autor:
Davide Astesiano, Sergio L. Cacciatori
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 7, Pp 1-20 (2020)
Journal of High Energy Physics
Journal of High Energy Physics
We find new BPS solutions in $N=2$ $D=4$ Fayet-Iliopoulos gauged supergravity with STU prepotential. These are stationary solutions carrying a Kerr-Newman throat spacetime geometry and are everywhere regular. One of the three scalar vector fields is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d52bec099c3132262cc576e19bb3f26f
https://doi.org/10.1007/jhep07(2020)017
https://doi.org/10.1007/jhep07(2020)017
Publikováno v:
Journal of High Energy Physics
Journal of High Energy Physics, Vol 2021, Iss 12, Pp 1-22 (2021)
Journal of High Energy Physics, Vol 2021, Iss 12, Pp 1-22 (2021)
We find a new non BPS solution in $N=2$ $D=4$ gauged supergravity coupled to $U(1)$ gauge fields and matter. It consists in a closed universe with two extremal black holes of equal size, surrounding two singularities. They have opposite magnetic char
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06470bbc3f5bb25e52acd15622af8f59