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pro vyhledávání: '"Cunha Pedro"'
We study stationary clouds of a gauged, complex scalar field on a magnetically (and possibly electrically as well) charged Kerr-Newman black hole (BH). The existence of a magnetic charge $Q_m$ promotes a north-south $\textit{asymmetry}$ of the scalar
Externí odkaz:
http://arxiv.org/abs/2410.21421
What does a black hole look like? In 1+3 spacetime dimensions, the optical appearance of a black hole is a bidimensional region in the observer's sky often called the black hole shadow, as supported by the EHT observations. In higher dimensions this
Externí odkaz:
http://arxiv.org/abs/2410.05390
Publikováno v:
JCAP 08 (2024) 055
The Einstein field equations, or generalizations thereof, are difficult to solve analytically. On the other hand, numerical solutions of the same equations have become increasingly common, in particular concerning compact objects. Whereas analytic ap
Externí odkaz:
http://arxiv.org/abs/2405.15651
Autor:
Machado, Mateus G., Melo, João G., Zanchettin, Cleber, Braga, Pedro H. M., Cunha, Pedro V., Barros, Edna N. S., Bassani, Hansenclever F.
This work investigates the potential of Reinforcement Learning (RL) to tackle robot motion planning challenges in the dynamic RoboCup Small Size League (SSL). Using a heuristic control approach, we evaluate RL's effectiveness in obstacle-free and sin
Externí odkaz:
http://arxiv.org/abs/2404.15410
We analyse the lensing images by dynamically robust rotating (mini-)Proca stars surrounded by thin accretion disks. Due to their peculiar geodesic structure we show that these images exhibit striking similarities with the ones of BHs, for appropriate
Externí odkaz:
http://arxiv.org/abs/2402.14919
It has been established that Black Hole (BH) spacetimes obeying some general set of assumptions always possess, at least, one light ring (per rotation sense) [arXiv:2003.06445]. This theorem was originally established for asymptotically flat, station
Externí odkaz:
http://arxiv.org/abs/2401.05495
Autor:
Loss, Flavio P., da Cunha, Pedro H., Rocha, Matheus B., Zanoni, Madson Poltronieri, de Lima, Leandro M., Nascimento, Isadora Tavares, Rezende, Isabella, Canuto, Tania R. P., Vieira, Luciana de Paula, Rossoni, Renan, Santos, Maria C. S., Frasson, Patricia Lyra, Romão, Wanderson, Filgueiras, Paulo R., Krohling, Renato A.
Skin lesions are classified in benign or malignant. Among the malignant, melanoma is a very aggressive cancer and the major cause of deaths. So, early diagnosis of skin cancer is very desired. In the last few years, there is a growing interest in com
Externí odkaz:
http://arxiv.org/abs/2401.01200
Autor:
Lima, Rui M., Lopes, Erik Teixeira, Lopes, Derek Chaves, Gonçalves, Bruno S., Cunha, Pedro G.
Publikováno v:
Business Process Management Journal, 2024, Vol. 30, Issue 8, pp. 207-231.
Externí odkaz:
http://www.emeraldinsight.com/doi/10.1108/BPMJ-08-2023-0632
Autor:
Ayzenberg, Dimitry, Blackburn, Lindy, Brito, Richard, Britzen, Silke, Broderick, Avery E., Carballo-Rubio, Raúl, Cardoso, Vitor, Chael, Andrew, Chatterjee, Koushik, Chen, Yifan, Cunha, Pedro V. P., Davoudiasl, Hooman, Denton, Peter B., Doeleman, Sheperd S., Eichhorn, Astrid, Eubanks, Marshall, Fang, Yun, Foschi, Arianna, Fromm, Christian M., Galison, Peter, Ghosh, Sushant G., Gold, Roman, Gurvits, Leonid I., Hadar, Shahar, Held, Aaron, Houston, Janice, Hu, Yichao, Johnson, Michael D., Kocherlakota, Prashant, Natarajan, Priyamvada, Olivares, Héctor, Palumbo, Daniel, Pesce, Dominic W., Rajendran, Surjeet, Roy, Rittick, Saurabh, Shao, Lijing, Tahura, Shammi, Tamar, Aditya, Tiede, Paul, Vincent, Frédéric H., Visinelli, Luca, Wang, Zhiren, Wielgus, Maciek, Xue, Xiao, Yakut, Kadri, Yang, Huan, Younsi, Ziri
The Event Horizon Telescope (EHT) Collaboration recently published the first images of the supermassive black holes in the cores of the Messier 87 and Milky Way galaxies. These observations have provided a new means to study supermassive black holes
Externí odkaz:
http://arxiv.org/abs/2312.02130