Conveners
Parallel - EoR, Cosmology: EoR
- Gianni Bernardi (INAF-Institute of Radioastronomy, Bologna, Italy / Rhodes University, Makhanda, South Africa / South African Radio Astronomy Observatory, Cape Town, South Africa)
- Andrei Mesinger (SNS)
Parallel - EoR, Cosmology: EoR
- Andrei Mesinger (SNS)
- Gianni Bernardi (INAF-Institute of Radioastronomy, Bologna, Italy / Rhodes University, Makhanda, South Africa / South African Radio Astronomy Observatory, Cape Town, South Africa)
Parallel - EoR, Cosmology: EoR
- Gianni Bernardi (INAF-Institute of Radioastronomy, Bologna, Italy / Rhodes University, Makhanda, South Africa / South African Radio Astronomy Observatory, Cape Town, South Africa)
- Andrei Mesinger (SNS)
Parallel - EoR, Cosmology: Cosmology
- Stefano Camera (Università degli Studi di Torino, Italy)
Parallel - EoR, Cosmology: Cosmology
- Stefano Camera (Università degli Studi di Torino, Italy)
Parallel - EoR, Cosmology: Cosmology
- Stefano Camera (Università degli Studi di Torino, Italy)
In the next decade many new optical/near-IR instruments will become available,
including new MOS facilities with large field of view (MOONS and PFS), the MOSAIC spectrograph on the ELT and the planned 10 mt class dedicated telescopes (WST and MSE).
These will enable large spectroscopic surveys which will allow us to detect and study unprecedented samples of galaxies well into in the...
Recent years have seen an increase in data probing the Epoch of Reionization (EoR) and nearing Cosmic Dawn, which is set to culminate with the observations from SKA. To accurately interpret these observations, we need to model both large-scale radiation fields and small-scale galaxy physics. The role of stochasticity in these quantities, is often neglected in semi-numerical models. To...
In the near future, 21cm cosmology will give us unprecedented insight into the early universe, however the novel nature of this probe makes it difficult to validate our observations. One way to ensure our measurements are correct is to cross-correlate them with other wavelengths. This process will require a fast, flexible forward model which can self-consistently produce mock data of the 21cm...
In the coming years, interferometers such as the Square Kilometer Array (SKA) will enable direct detection of the epoch of reionization (EoR), opening the window to a hitherto obscure epoch of cosmic history. First light from the SKA is expected to yield a low signal-to-noise (SNR) measurement of the 21 cm brightness temperature power spectrum and it will be difficult to convince the...
Recent years have witnessed rapid progress in observations of the Epoch of Reionization (EoR). These have enabled high-dimensional inference of galaxy and intergalactic medium (IGM) properties during the first billion years of our Universe. However, even using efficient, semi-numerical simulations, traditional inference approaches that compute 3D lightcones on-the-fly can take $10^5$ core...
Total-power radiometry with individual meter-wave antennas is a potentially effective way to study the Cosmic Dawn through measurement of the sky brightness arising from the 21cm transition of neutral hydrogen, provided this can be disentangled from much stronger Galactic and extra-galactic foregrounds. In this talk, I will review the current observational status of the global signal, 5 years...
The objective of the SKA Foregrounds Data Challenge is to evaluate the accuracy of the different techniques used to extract the cylindrically-averaged power spectrum of the Epoch of Reionization signal, clean from foreground contamination. We use the foreground avoidance method to constrain the EoR signal using 21CMMC, whereby only a small part of the EoR window is utilized. We model our sky...
I will review the main scientific questions that can be addressed by SKA in terms of fundamental physics. I will focus on intensity mapping in the post-reionization era and address: nature of dark matter, dynamics and geometry of the Universe, neutrino masses. I will try to provide also some context and detail how and why probing high-z structure formation processes can be relevant, also with...
There are multiple reasons for which galaxy clustering requires a proper general relativistic description. (i) We observe events lying on our past light-cone. (ii) The propagation of light is affected by the presence of inhomogeneities in the matter distribution. (iii) In consequence, galaxy observables (i.e. redshift, flux in some wave-band and angular position on the sky) are influenced by...
The forthcoming experiments aimed at observing the Cosmic Microwave Background (CMB) polarization (e.g. Simons Observatory, SO and CMB-Stage IV, CMB-S4), are expected to survey half of the sky at frequencies between 30 and 280 GHz and ~1' resolution with an unprecedented sensitivity. Most of the extragalactic detections will employ active galactic nuclei (AGNs) and dusty star-forming...
Probing the Universe's large-scale structure (LSS) leads to a wealth of cosmological information. With the advent of the SKA Observatory, we can start using the neutral hydrogen (HI) 21-cm emission to trace the LSS. In particular, a novel observational strategy is catching on: Intensity Mapping (IM). With IM, we relax the requirement of source detection and go after all the integrated 21-cm...
