Zobrazeno 1 - 10
of 4 060
pro vyhledávání: '"Gallerani A."'
Autor:
Tripodi, Roberta, Martis, Nicholas, Markov, Vladan, Bradač, Maruša, Di Mascia, Fabio, Cammelli, Vieri, D'Eugenio, Francesco, Willott, Chris, Curti, Mirko, Bhatt, Maulik, Gallerani, Simona, Rihtaršič, Gregor, Singh, Jasbir, Gaspar, Gaia, Harshan, Anishya, Judež, Jon, Merida, Rosa M., Desprez, Guillaume, Sawicki, Marcin, Goovaerts, Ilias, Muzzin, Adam, Noirot, Gaël, Sarrouh, Ghassan T. E., Abraham, Roberto, Asada, Yoshihisa, Brammer, Gabriel, Carpenter, Vicente Estrada, Felicioni, Giordano, Fujimoto, Seiji, Iyer, Kartheik, Mowla, Lamiya, Strait, Victoria
The James Webb Space Telescope (JWST) has recently discovered a new population of objects at high redshift referred to as `Little Red Dots' (LRDs). Their nature currently remains elusive, despite their surprisingly high inferred number densities. Thi
Externí odkaz:
http://arxiv.org/abs/2412.04983
The presence of supermassive black holes (SMBHs, $M_{\bullet}\sim 10^{6-10}~M_{\odot}$) in the first cosmic Gyr ($z\gtrsim 6$) challenges current models of BH formation and evolution. We propose a novel mechanism for the formation of early SMBH seeds
Externí odkaz:
http://arxiv.org/abs/2411.03448
Autor:
Saccheo, I., Bongiorno, A., Piconcelli, E., Zappacosta, L., Bischetti, M., D'Odorico, V., Done, C., Temple, M. J., Testa, V., Tortosa, A., Brusa, M., Carniani, S., Civano, F., Comastri, A., Cristiani, S., De Cicco, D., Elvis, M., Fan, X., Feruglio, C., Fiore, F., Gallerani, S., Giallongo, E., Gilli, R., Grazian, A., Guainazzi, M., Haardt, F., Maiolino, R., Menci, N., Miniutti, G., Nicastro, F., Paolillo, M., Puccetti, S., Salvestrini, F., Schneider, R., Tombesi, F., Tripodi, R., Valiante, R., Vallini, L., Vanzella, E., Vietri, G., Vignali, C., Vito, F., Volonteri, M., La Franca, F.
We aim at characterizing the X-ray-to-optical/near-infrared broad-band emission of luminous QSOs in the first Gyr of cosmic evolution to understand whether they exhibit differences compared to the lower-\textit{z} QSO population. Our goal is also to
Externí odkaz:
http://arxiv.org/abs/2411.02105
Autor:
Tortosa, A., Zappacosta, L., Piconcelli, E., Bischetti, M., Done, C., Miniutti, G., Saccheo, I., Vietri, G., Bongiorno, A., Brusa, M., Carniani, S., Chilingarian, I. V., Civano, F., Cristiani, S., D'Odorico, V., Elvis, M., Fan, X., Feruglio, C., Fiore, F., Gallerani, S., Giallongo, E., Gilli, R., Grazian, A., Guainazzi, M., Haardt, F., Luminari, A., Maiolino, R., Menci, N., Nicastro, F., Petrucci, P. O., Puccetti, S., Salvestrini, F., Schneider, R., Testa, V., Tombesi, F., Tripodi, R., Valiante, R., Vallini, L., Vanzella, E., Vasylenko, A., Vignali, C., Vito, F., Volonteri, M., La Franca, F.
One of the main open questions in the field of luminous ($L_{\rm bol}>10^{47}\,\rm erg\,s^{-1}$) quasars (QSOs) at $z \gtrsim 6$ is the rapid formation ($< 1\,$Gyr) of their supermassive black holes (SMBHs). For this work we analysed the relation bet
Externí odkaz:
http://arxiv.org/abs/2410.12786
Autor:
Pallottini, A., Ferrara, A., Gallerani, S., Sommovigo, L., Carniani, S., Vallini, L., Kohandel, M., Venturi, G.
Galaxy evolution emerges from the balance between cosmic gas accretion, fueling star formation, and supernova (SN) feedback, regulating the metal enrichment. Hence, the stellar mass ($M_*$) - gas metallicity relation (MZR) is key to understand the ph
Externí odkaz:
http://arxiv.org/abs/2408.00061
Publikováno v:
Phys. Rev. D 110, no.6, 064087 (2024)
We explore alternative formulations of the analogy between viable Horndeski gravity and Eckart's first-order thermodynamics. We single out a class of identifications for the effective stress-energy tensor of the scalar field fluid that, upon performi
Externí odkaz:
http://arxiv.org/abs/2405.20865
Autor:
Greig, Bradley, Mesinger, Andrei, Bañados, Eduardo, Becker, George D., Bosman, Sarah E. I., Chen, Huanqing, Davies, Frederick B., D'Odorico, Valentina, Eilers, Anna-Christina, Gallerani, Simona, Haehnelt, Martin G., Keating, Laura, Lai, Samuel, Qin, Yuxiang, Ryan-Weber, Emma, Satyavolu, Sindhu, Wang, Feige, Yang, Jinyi, Zhu, Yongda
The attenuation of Ly$\alpha$ photons by neutral hydrogen in the intergalactic medium (IGM) at $z\gtrsim5$ continues to be a powerful probe for studying the epoch of reionisation. Given a framework to estimate the intrinsic (true) Ly$\alpha$ emission
Externí odkaz:
http://arxiv.org/abs/2404.12585
Autor:
Bischetti, Manuela, Choi, Hyunseop, Fiore, Fabrizio, Feruglio, Chiara, Carniani, Stefano, D'Odorico, Valentina, Bañados, Eduardo, Chen, Huanqing, Decarli, Roberto, Gallerani, Simona, Hlavacek-Larrondo, Julie, Lai, Samuel, Leighly, Karen M., Mazzucchelli, Chiara, Perreault-Levasseur, Laurence, Tripodi, Roberta, Walter, Fabian, Wang, Feige, Yang, Jinyi, Zanchettin, Maria Vittoria, Zhu, Yongda
Although the mass growth of supermassive black holes during the Epoch of Reionisation is expected to play a role in shaping the concurrent growth of their host-galaxies, observational evidence of feedback at z$\gtrsim$6 is still sparse. We perform th
Externí odkaz:
http://arxiv.org/abs/2404.12443
Autor:
Greig, Bradley, Bosman, Sarah E. I., Davies, Frederick B., Ďurovčíková, Dominika, Fathivavsari, Hassan, Liu, Bin, Meyer, Romain A., Sun, Zechang, D'Odorico, Valentina, Gallerani, Simona, Mesinger, Andrei, Ting, Yuan-Sen
Reconstructing the intrinsic Ly$\alpha$ line flux from high-$z$ QSOs can place constraints on the neutral hydrogen content of the intergalactic medium during reionisation. There are now $\gtrsim10$ different Ly$\alpha$ reconstruction pipelines using
Externí odkaz:
http://arxiv.org/abs/2404.01556
Autor:
Resca, Lorenzo Gallerani
I consider electro-weak (EW) masses and interactions generated for photons by vacuum expectation values of Stueckelberg and Higgs fields. I provide a prescription to relate their parametric values to a cosmological range derived from a fundamental He
Externí odkaz:
http://arxiv.org/abs/2404.00241