Zobrazeno 1 - 10
of 980
pro vyhledávání: '"Sergio, V."'
Ultracompact objects (UCOs) are horizonless compact objects that present light rings (LRs) - circular photon orbits. As a result, they could be black hole mimickers. Some years ago, Cunha et al. established a theorem stating that, under general assum
Externí odkaz:
http://arxiv.org/abs/2404.02208
Publikováno v:
Phys. Rev. D 108, 084060 (2023)
We study the scattering of axially incident massless scalar waves by a charged and rotating black hole solution from heterotic string theory called the Kerr-Sen black hole. We compute the scattering cross section using the partial wave approach, for
Externí odkaz:
http://arxiv.org/abs/2311.12953
Publikováno v:
Phys. Rev. D 107, 064040 (2023)
We investigate the shadow of an exact black hole solution of Einstein's equations recently proposed by Cardoso et al., to describe a supermassive black hole immersed in a dark matter halo. We analyze and discuss the light rings and the gravitational
Externí odkaz:
http://arxiv.org/abs/2303.17666
Autor:
Santos, Dalí F. D. dos, de Faria, Paulo R., Loyola, Adriano M., Cardoso, Sérgio V., Travençolo, Bruno A. N., Nascimento, Marcelo Z. do
Computer-aided diagnosis (CAD) can be used as an important tool to aid and enhance pathologists' diagnostic decision-making. Deep learning techniques, such as convolutional neural networks (CNN) and fully convolutional networks (FCN), have been succe
Externí odkaz:
http://arxiv.org/abs/2303.10172
Publikováno v:
Revista de Investigación Clínica, Vol 76, Iss 4 (2024)
Externí odkaz:
https://doaj.org/article/0b70d7b044054a909f4145290827f792
We observed a magnetic interfacial effect due to the coupling between two interfaces of different materials. The interface is compoust of an antiferromagnetic and other quasi-ferromagnetic material. This effect we measured through the ferromagnetic r
Externí odkaz:
http://arxiv.org/abs/2211.08130
In this paper, we recover the boundary null controllability for the degenerate heat equation by analyzing the asymptotic behavior of an eligible family of state-control pairs $((u_{\varepsilon}, h_{\varepsilon}))_{\varepsilon >0}$ solving correspondi
Externí odkaz:
http://arxiv.org/abs/2107.04065