ICTS:31359

Video URL

Advances in Detecting the 21-cm Signal from the Epoch of Reionization with LOFAR

Advances in Detecting the 21-cm Signal from the Epoch of Reionization with LOFAR

(2025). Advances in Detecting the 21-cm Signal from the Epoch of Reionization with LOFAR. SciVideos. https://youtube.com/live/simUtG7O3s4

Advances in Detecting the 21-cm Signal from the Epoch of Reionization with LOFAR. SciVideos, Apr. 07, 2025, https://youtube.com/live/simUtG7O3s4 

          @misc{ scivideos_ICTS:31359,
            doi = {},
            url = {https://youtube.com/live/simUtG7O3s4},
            author = {},
            keywords = {},
            language = {en},
            title = {Advances in Detecting the 21-cm Signal from the Epoch of Reionization with LOFAR},
            publisher = {},
            year = {2025},
            month = {apr},
            note = {ICTS:31359 see, \url{https://scivideos.org/index.php/icts-tifr/31359}}
          }
Leon V. E. Koopmans
Talk numberICTS:31359
Source RepositoryICTS-TIFR
Collection

Abstract

I will present recent progress in constraining the 21-cm power spectrum of neutral hydrogen from the Epoch of Reionization (EoR) using the Low-Frequency Array (LOFAR), bringing us increasingly closer to the sensitivity levels predicted by standard astrophysical models. Achieving deeper limits requires not only adding additional data but also addressing systematic errors, including instrumental and ionospheric effects, as well as mitigating radio-frequency interference. In this talk, I will highlight the rapid advancements our team has achieved in tackling these obstacles, with a particular focus on the largest remaining challenge: direction-dependent gain calibration. Additionally, I will discuss the implications of our latest results, which provide new constraints on the intergalactic medium (IGM) during the EoR, derived from our deepest power-spectrum measurements across three redshifts.