Zobrazeno 1 - 10
of 115
pro vyhledávání: '"Spingola P"'
Autor:
Despali, Giulia, Heinze, Felix M., Fassnacht, Christopher D., Vegetti, Simona, Spingola, Cristiana, Klessen, Ralf
Strong gravitational lensing can detect the presence of low-mass haloes and subhaloes through their effect on the surface brightness of lensed arcs. We carry out an extended analysis of the density profiles and mass distributions of two detected subh
Externí odkaz:
http://arxiv.org/abs/2407.12910
Autor:
Stanghellini, C., Orienti, M., Spingola, C., Zanichelli, A., Dallacasa, D., Cassaro, P., O'Dea, C. P., Baum, S. A., Pérez-Torres, M.
The long-standing question concerning Jetted Sub-Galactic Size (JSS) radio sources is whether they will evolve into large radio galaxies, die before escaping the host galaxy, or remain indefinitely confined to their compact size. Our main goal is to
Externí odkaz:
http://arxiv.org/abs/2407.02029
Autor:
Caccianiga, A., Ighina, L., Moretti, A., Brivio, R., Belladitta, S., Dallacasa, D., Spingola, C., Marchã, M. J., Antón, S.
Obscuration in high-redshift quasi-stellar objects (QSO) has a profound impact on our understanding of the evolution of supermassive black holes across the cosmic time. An accurate quantification of its relevance is therefore mandatory. We present a
Externí odkaz:
http://arxiv.org/abs/2402.01835
Autor:
Gloudemans, A. J., Saxena, A., Intema, H., Callingham, J. R., Duncan, K. J., Rottgering, H. J. A., Belladitta, S., Hardcastle, M. J., Harikane, Y., Spingola, C.
Publikováno v:
A&A 678, A128 (2023)
We present the low-frequency radio spectra of 9 high-redshift quasars at $5.6 \leq z \leq 6.6$ using the Giant Metre Radio Telescope band-3, -4, and -5 observations ($\sim$300-1200 MHz), archival Low Frequency Array (LOFAR; 144 MHz), and Very Large A
Externí odkaz:
http://arxiv.org/abs/2309.03936
Autor:
Longman, A., Ravichandran, S., Manzo, L., He, C. Z., Lera, R., McLane, N., Huault, M., Tiscareno, G., Hanggi, D., Spingola, P., Czapla, N., Daskalova, R. L., Roso, L., Fedosejevs, R., Hill, W. T.
Spatial distributions of electrons ionized and scattered from ultra-low pressure gases are proposed and experimentally demonstrated as a method to directly measure the intensity of an ultra-high intensity laser pulse. Analytic models relating the pea
Externí odkaz:
http://arxiv.org/abs/2307.08254
Autor:
Spingola, C.
Current cosmological controversies can be solved if a sufficient level of precision is achieved by observations. Future surveys with the next generation of telescopes will offer significantly improved depth and angular resolution with respect to exis
Externí odkaz:
http://arxiv.org/abs/2303.12676
Autor:
Powell, Devon M., Vegetti, Simona, McKean, J. P., White, Simon D. M., Ferreira, Elisa G. M., May, Simon, Spingola, Cristiana
Using a single gravitational lens system observed at $\lesssim5$ milli-arcsecond resolution with very long baseline interferometry (VLBI), we place a lower bound on the mass of the fuzzy dark matter (FDM) particle, ruling out $m_\chi \leq 4.4\times10
Externí odkaz:
http://arxiv.org/abs/2302.10941
Autor:
Glikman, Eilat, Rusu, Cristian E., Chen, Geoff C. -F., Chan, James Hung-Hsu, Spingola, Cristiana, Stacey, Hannah, McKean, John, Berghea, Ciprian T., Djorgovski, S. G., Graham, Matthew J., Stern, Daniel, Urrutia, Tanya, Lacy, Mark, Secrest, Nathan J., O'Meara, John M.
We present the discovery of a gravitationally lensed dust-reddened QSO at z = 2.517, identified in a survey for QSOs by infrared selection. Hubble Space Telescope imaging reveals a quadruply lensed system in a cusp configuration, with a maximum image
Externí odkaz:
http://arxiv.org/abs/2211.03866
Autor:
Belladitta, S., Moretti, A., Caccianiga, A., Dallacasa, D., Spingola, C., Pedani, M., Cassarà, L. P., Bisogni, S.
Publikováno v:
A&A 669, A134 (2023)
We present the discovery of PSO J191.05696$+$86.43172 (hereafter PSO J191$+$86), a new powerful radio-loud quasar (QSO) in the early Universe (z = 5.32). We discovered it by cross-matching the NRAO VLA Sky Survey (NVSS) radio catalog at 1.4 GHz with
Externí odkaz:
http://arxiv.org/abs/2210.14946
Autor:
Delvecchio, I., Daddi, E., Sargent, M. T., Aird, J., Mullaney, J. R., Magnelli, B., Elbaz, D., Bisigello, L., Ceraj, L., Jin, S., Kalita, B. S., Liu, D., Novak, M., Prandoni, I., Radcliffe, J. F., Spingola, C., Zamorani, G., Allevato, V., Rodighiero, G., Smolcic, V.
Publikováno v:
A&A 668, A81 (2022)
Mapping the average AGN luminosity across galaxy populations and over time encapsulates important clues on the interplay between supermassive black hole (SMBH) and galaxy growth. This paper presents the demography, mean power and cosmic evolution of
Externí odkaz:
http://arxiv.org/abs/2209.12585