Zobrazeno 1 - 10
of 61 120
pro vyhledávání: '"A Sanna"'
We present exact solutions for the cosmological embedding of a broad class of non-singular black holes, demonstrating that these objects exhibit an apparent horizon. The evolution of the latter is analyzed as a function of the cosmological redshift $
Externí odkaz:
http://arxiv.org/abs/2410.10459
Many real-world networks evolve dynamically over time and present different types of connections between nodes, often called layers. In this work, we propose a latent position model for these objects, called the dynamic multiplex random dot product g
Externí odkaz:
http://arxiv.org/abs/2410.09810
Synthetic data generation has been proven successful in improving model performance and robustness in the context of scarce or low-quality data. Using the data valuation framework to statistically identify beneficial and detrimental observations, we
Externí odkaz:
http://arxiv.org/abs/2410.00759
Autor:
Gerina, Marianna, Angotzi, Marco Sanna, Mameli, Valentina, Mazur, Michal, Rusta, Nicoletta, Balica, Elena, Hrubovčák, Pavol, Cannas, Carla, Honecker, Dirk, Zákutná, Dominika
Designing well-defined magnetic nanomaterials is crucial for various applications and demands a comprehensive understanding of their magnetic properties at the microscopic level. In this study, we investigate the contributions to the total anisotropy
Externí odkaz:
http://arxiv.org/abs/2409.03736
Autor:
Evangelista, Y., Fiore, F., Campana, R., Baroni, G., Ceraudo, F., Della Casa, G., Demenev, E., Dilillo, G., Fiorini, M., Ghirlanda, G., Grassi, M., Guzmán, A., Hedderman, P., Marchesini, E. J., Morgante, G., Mele, F., Nava, L., Nogara, P., Nuti, A., Caballero, S. Pliego, Rashevskaya, I., Russo, F., Sottile, G., Lavagna, M., Colagrossi, A., Silvestrini, S., Quirino, M., Bechini, M., Brandonisio, A., De Cecio, F., Dottori, A., Troisi, i., Bertacin, R., Bellutti, P., Bertuccio, G., Burderi, L., Chen, T., Citossi, M., Di Salvo, T., Feroci, M., Ficorella, F., Gao, N., Grappasonni, C., Labanti, C., La Rosa, G., Leone, W., Malcovati, P., Negri, B., Pepponi, G., Perri, M., Piazzolla, R., Picciotto, A., Pirrotta, S., Puccetti, S., Rashevsky, A., Riggio, A., Rinaldi, M., Sanna, A., Santangelo, A., Tenzer, C., Tiberia, A., Trenti, M., Trevisan, S., Vacchi, A., Xiong, S., Zampa, G., Zampa, N., Zhang, S., Zorzi, N., Ripa, J., Werner, N.
Publikováno v:
Proceedings Volume 13093, Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray; 130931Z (2024)
HERMES (High Energy Rapid Modular Ensemble of Satellites) Pathfinder is a space-borne mission based on a constellation of six nano-satellites flying in a low-Earth orbit (LEO). The 3U CubeSats, to be launched in early 2025, host miniaturized instrume
Externí odkaz:
http://arxiv.org/abs/2409.00989
Publikováno v:
A&A 690, A81 (2024)
Understanding the launching mechanism of winds and jets remains one of the fundamental challenges in astrophysics. The Protostellar Outflows at the EarliesT Stages (POETS) survey has recently mapped the 3D velocity field of the protostellar winds in
Externí odkaz:
http://arxiv.org/abs/2408.11968
Autor:
Illiano, Giulia, Papitto, Alessandro, Marino, Alessio, Strohmayer, Tod E., Sanna, Andrea, Di Salvo, Tiziana, La Placa, Riccardo, Ambrosino, Filippo, Zanon, Arianna Miraval, Zelati, Francesco Coti, Ballocco, Caterina, Malacaria, Christian, Ghedina, Adriano, Cecconi, Massimo, Gonzales, Manuel, Leone, Franco
We present a comprehensive study of the X-ray spectral properties of the accreting millisecond pulsar IGR J17498$-$2921 during its 2023 outburst. Similar to other accreting millisecond pulsars, the broad-band spectral emission observed quasi-simultan
Externí odkaz:
http://arxiv.org/abs/2408.06895
Autor:
Stephan, L. Sanna
Dyadic network formation models have wide applicability in economic research, yet are difficult to estimate in the presence of individual specific effects and in the absence of distributional assumptions regarding the model noise component. The avail
Externí odkaz:
http://arxiv.org/abs/2408.04552
Autor:
Papitto, Alessandro, Di Marco, Alessandro, Poutanen, Juri, Salmi, Tuomo, Illiano, Giulia, La Monaca, Fabio, Ambrosino, Filippo, Bobrikova, Anna, Baglio, Maria Cristina, Ballocco, Caterina, Burderi, Luciano, Campana, Sergio, Zelati, Francesco Coti, Di Salvo, Tiziana, La Placa, Riccardo, Loktev, Vladislav, Long, Sinan, Malacaria, Christian, Zanon, Arianna Miraval, Ng, Mason, Pilia, Maura, Sanna, Andrea, Stella, Luigi, Strohmayer, Tod, Zane, Silvia
We report on the discovery of polarized X-ray emission from an accreting millisecond pulsar. During a 10-day-long coverage of the February 2024 outburst of SRGA J144459.2-604207, the Imaging X-ray Polarimetry Explorer (IXPE) detected an average polar
Externí odkaz:
http://arxiv.org/abs/2408.00608
Models for categorical sequences typically assume exchangeable or first-order dependent sequence elements. These are common assumptions, for example, in models of computer malware traces and protein sequences. Although such simplifying assumptions le
Externí odkaz:
http://arxiv.org/abs/2407.19236