Zobrazeno 1 - 10
of 7 536
pro vyhledávání: '"Nicola R"'
We consider a mixed formulation of parametrized elasticity problems in terms of stress, displacement, and rotation. The latter two variables act as Lagrange multipliers to enforce conservation of linear and angular momentum. Due to the saddle-point s
Externí odkaz:
http://arxiv.org/abs/2410.06975
Autor:
Zhong, Fucheng, Luo, Ruibiao, Napolitano, Nicola R., Tortora, Crescenzo, Li, Rui, Zhu, Xincheng, Busillo, Valerio, Koopmans, L. V. E., Longo, Giuseppe
We present a novel deep learning method to separately extract the two-dimensional flux information of the foreground galaxy (deflector) and background system (source) of Galaxy-Galaxy Strong Lensing events using U-Net (GGSL-Unet for short). In partic
Externí odkaz:
http://arxiv.org/abs/2410.02936
Autor:
Li, En-Kun, Liu, Shuai, Torres-Orjuela, Alejandro, Chen, Xian, Inayoshi, Kohei, Wang, Long, Hu, Yi-Ming, Amaro-Seoane, Pau, Askar, Abbas, Bambi, Cosimo, Capelo, Pedro R., Chen, Hong-Yu, Chua, Alvin J. K., Condés-Breña, Enrique, Dai, Lixin, Das, Debtroy, Derdzinski, Andrea, Fan, Hui-Min, Fujii, Michiko, Gao, Jie, Garg, Mudit, Ge, Hongwei, Giersz, Mirek, Huang, Shun-Jia, Hypki, Arkadiusz, Liang, Zheng-Cheng, Liu, Bin, Liu, Dongdong, Liu, Miaoxin, Liu, Yunqi, Mayer, Lucio, Napolitano, Nicola R., Peng, Peng, Shao, Yong, Shashank, Swarnim, Shen, Rongfeng, Tagawa, Hiromichi, Tanikawa, Ataru, Toscani, Martina, Vázquez-Aceves, Verónica, Wang, Hai-Tian, Yi, Shu-Xu, Zhang, Jian-dong, Zhang, Xue-Ting, Zhu, Lianggui, Zwick, Lorenz, Huang, Song, Mei, Jianwei, Wang, Yan, Xie, Yi, Zhang, Jiajun, Luo, Jun
The opening of the gravitational wave window has significantly enhanced our capacity to explore the universe's most extreme and dynamic sector. In the mHz frequency range, a diverse range of compact objects, from the most massive black holes at the f
Externí odkaz:
http://arxiv.org/abs/2409.19665
Autor:
He, Zizhao, Li, Rui, Shu, Yiping, Tortora, Crescenzo, Er, Xinzhong, Canameras, Raoul, Schuldt, Stefan, Napolitano, Nicola R., N, Bharath Chowdhary, Chen, Qihang, Li, Nan, Feng, Haicheng, Deng, Limeng, Li, Guoliang, Koopmans, L. V. E., Dvornik, Andrej
Gravitationally strongly lensed quasars (SL-QSO) offer invaluable insights into cosmological and astrophysical phenomena. With the data from ongoing and next-generation surveys, thousands of SL-QSO systems can be discovered expectedly, leading to unp
Externí odkaz:
http://arxiv.org/abs/2409.17471
Autor:
Scognamiglio, Diana, Spiniello, Chiara, Radovich, Mario, Tortora, Crescenzo, Napolitano, Nicola R., Li, Rui, Maturi, Matteo, Maksymowicz-Maciata, Michalina, Cappellari, Michele, Arnaboldi, Magda, Bevacqua, Davide, Coccato, Lodovico, D'Ago, Giuseppe, Feng, Hai-Cheng, Ferré-Mateu, Anna, Hartke, Johanna, Martín-Navarro, Ignacio, Pulsoni, Claudia
Relic galaxies, the oldest ultra-compact massive galaxies (UCMGs), contain almost exclusively "pristine" stars formed during an intense star formation (SF) burst at high redshift. As such, they allow us to study in detail the early mechanism of galax
Externí odkaz:
http://arxiv.org/abs/2409.12288
Autor:
Feng, Hai-Cheng, Li, Rui, Napolitano, Nicola R., Li, Sha-Sha, Bai, J. M., Li, Ran, Liu, H. T., Lu, Kai-Xing, Radovich, Mario, Shan, Huan-Yuan, Wang, Jian-Guo, Xi, Wen-Zhe, Xie, Ling-Hua, Zhang, Yang-Wei
We present a novel multimodal neural network for classifying astronomical sources in multiband ground-based observations, from optical to near infrared, to separate sources in stars, galaxies and quasars. Our approach combines a convolutional neural
Externí odkaz:
http://arxiv.org/abs/2406.03797
We propose a new reduced order modeling strategy for tackling parametrized Partial Differential Equations (PDEs) with linear constraints, in particular Darcy flow systems in which the constraint is given by mass conservation. Our approach employs cla
Externí odkaz:
http://arxiv.org/abs/2311.14554
Autor:
Gatto, Massimiliano, Bellazzini, Michele, Tortora, Crescenzo, Ripepi, Vincenzo, Dall'Ora, Massimo, Cignoni, Michele, Kuijken, Konrad, Hildebrandt, Hendrik, Zhang, Shiyang, de Jong, Jelte, Napolitano, Nicola R., Smith, Simon E. T.
We report on the discovery of a significant and compact over-density of old and metal-poor stars in the KiDS survey (data release 4). The discovery is confirmed by deeper HSC-SSC data revealing the old Main Sequence Turn-Off of a stellar system locat
Externí odkaz:
http://arxiv.org/abs/2311.06037
Autor:
Zhong, Fucheng, Napolitano, Nicola R., Heneka, Caroline, Li, Rui, Bauer, Franz Erik, Bouche, Nicolas, Comparat, Johan, Kim, Young-Lo, Krogager, Jens-Kristian, Longhetti, Marcella, Loveday, Jonathan, Roukema, Boudewijn F., Rouse, Benedict L., Salvato, Mara, Tortora, Crescenzo, Assef, Roberto J., Cassarà, Letizia P., Costantin, Luca, Croom, Scott, Davies, Luke J M, Fritz, Alexander, Guiglion, Guillaume, Humphrey, Andrew, Pompei, Emanuela, Ricci, Claudio, Sifón, Cristóbal, Tempel, Elmo, Zafar, Tayyaba
Large sky spectroscopic surveys have reached the scale of photometric surveys in terms of sample sizes and data complexity. These huge datasets require efficient, accurate, and flexible automated tools for data analysis and science exploitation. We p
Externí odkaz:
http://arxiv.org/abs/2311.04146
Autor:
Li, Rui, Napolitano, Nicola R., Xie, Linghua, Li, Ran, Guo, Xiaotong, Sergeyev, Alexey, Tortora, Crescenzo, Spiniello, Chiara, Koopmans, Alessandro Sonnenfeld Leon V. E., Scognamiglio, Diana
During the early stages of galaxy evolution, a significant fraction of galaxies undergo a transitional phase between the ``blue nugget" systems, which arise from the compaction of large, active star-forming disks, and the ``red nuggets", which are re
Externí odkaz:
http://arxiv.org/abs/2311.02930