Zobrazeno 1 - 10
of 328
pro vyhledávání: '"Ciardi Benedetta"'
The latest ALMA and JWST observations provide new information on the birth and evolution of galaxies in the early Universe, at the epoch of reionization. Of particular importance are measurements at redshift $ z > 5$ of their cold-gas budget, which i
Externí odkaz:
http://arxiv.org/abs/2410.14284
Autor:
Acharya, Anshuman, Ma, Qing-bo, Giri, Sambit K., Ciardi, Benedetta, Ghara, Raghunath, Mellema, Garrelt, Zaroubi, Saleem, Hothi, Ian, Iliev, Ilian T., Koopmans, Léon V. E., Bianco, Michele
A detection of the 21-cm signal power spectrum from the Epoch of Reionization is imminent, thanks to consistent advancements from telescopes such as LOFAR, MWA, and HERA, along with the development of SKA. In light of this progress, it is crucial to
Externí odkaz:
http://arxiv.org/abs/2410.11620
Ly$\alpha$ emission is key to understanding the process of cosmic reionisation. JWST is finally enabling us to measure Ly$\alpha$ emission deep into the epoch of reionisation for an increasing number of galaxies. However, discrepancies between measur
Externí odkaz:
http://arxiv.org/abs/2408.16063
Autor:
Acharya, Anshuman, Mertens, Florent, Ciardi, Benedetta, Ghara, Raghunath, Koopmans, Léon V. E., Zaroubi, Saleem
The use of Gaussian Process Regression (GPR) for foregrounds mitigation in data collected by the LOw-Frequency ARray (LOFAR) to measure the high-redshift 21-cm signal power spectrum has been shown to have issues of signal loss when the 21-cm signal c
Externí odkaz:
http://arxiv.org/abs/2408.10051
Autor:
Choudhury, Madhurima, Ghara, Raghunath, Zaroubi, Saleem, Ciardi, Benedetta, Koopmans, Leon V. E., Mellema, Garrelt, Shaw, Abinash Kumar, Acharya, Anshuman, Iliev, I. T., Ma, Qing-Bo, Giri, Sambit K.
The high redshift 21-cm signal promises to be a crucial probe of the state of the intergalactic medium (IGM). Understanding the connection between the observed 21-cm power spectrum and the physical quantities intricately associated with the IGM is cr
Externí odkaz:
http://arxiv.org/abs/2407.03523
Publikováno v:
A&A 689, A106 (2024)
A powerful tool to probe the gas content at high redshift is the [C II] 158 $\mu$m sub-millimeter emission line, which, due to its low excitation potential and luminous emission, is considered a possible direct tracer of star forming gas. In this wor
Externí odkaz:
http://arxiv.org/abs/2406.01277
Autor:
Ghara, Raghunath, Shaw, Abinash Kumar, Zaroubi, Saleem, Ciardi, Benedetta, Mellema, Garrelt, Koopmans, Léon V. E., Acharya, Anshuman, Choudhury, Madhurima, Giri, Sambit K., Iliev, Ilian T., Ma, Qing-Bo, Mertens, Florent
Publikováno v:
A&A 687, A252 (2024)
The redshifted 21-cm signal from the epoch of reionization (EoR) directly probes the ionization and thermal states of the intergalactic medium during that period. In particular, the distribution of the ionized regions around the radiating sources dur
Externí odkaz:
http://arxiv.org/abs/2404.11686
Recently, models of the quasar luminosity function (QLF) rooted on large observational compilations have been produced that, unlike their predecessors, feature a smooth evolution with time. This bypasses the need to assume an ionizing emissivity evol
Externí odkaz:
http://arxiv.org/abs/2404.06409
We present SPICE, a new suite of RHD cosmological simulations targeting the epoch of reionisation. The goal of these simulations is to systematically probe a variety of stellar feedback models, including "bursty" and "smooth" forms of supernova energ
Externí odkaz:
http://arxiv.org/abs/2310.16895
The 21-cm line emitted by neutral hydrogen is the most promising probe of the Epoch of Reionization (EoR). Multiple radio interferometric instruments are on the cusp of detecting its power spectrum. It is therefore essential to deliver robust theoret
Externí odkaz:
http://arxiv.org/abs/2310.13401