Papers › In Search of Global 21-cm Signal using Artificial Neural Network in light of ARCADE 2
In Search of Global 21-cm Signal using Artificial Neural Network in light of ARCADE 2
Vivekanand Mohapatra, Johnny J, Pravin Kumar Natwariya, Jishnu Goswami, Alekha C. Nayak
The archive published only this paper's code-link row. Authors, date and abstract are from arXiv's metadata (CC0), read from the Kaggle arXiv metadata snapshot of 2026-09-12 where its title matched the archive's; the title is the archive's.
Understanding the astrophysical nature of the first stars remains an unsolved problem in cosmology. The redshifted global 21-cm signal (T₂₁) acts as a treasure trove to probe the cosmic dawn era -- when the intergalactic medium was mostly neutral. Many experiments, like SARAS 3, EDGES, and DARE, have been proposed to probe the cosmic dawn era. However, extracting the faint cosmological signal buried inside a brighter foreground, 𝒪(10⁴), remains challenging. Additionally, an accurate modelling of foreground and T₂₁ signal remains the heart of any extraction technique. In this work, we constructed the foreground signal (T_(FG)) from the global sky model and star formation history using Press-Schechter formalism to determine the T₂₁ signal with excess radio background following ARCADE 2 detection. Further, we incorporated static ionospheric distortion into the total signal and calculated the signal measured by an ideal antenna. We then trained an artificial neural network (ANN) for the extraction of a T₂₁ signal parameters signal measured by antenna with an R-square score (0.5523 - 0.9901). Lastly, we used a Bayesian technique to extract T₂₁ signal and compared the finding with ANN's extraction.
Code
Repository list and official/mentioned flags are the archive's, frozen 2025-07-28. Reachability, where shown, is from one Syntology probe window (2026-09-16 to 2026-09-18); repositories not probed show nothing. GitHub stars are not tracked.
Code Syntology ran Syntology
Not run by Syntology. Nothing on this page verifies that the listed code works.
Results from the paper archive 2025-07-28
No leaderboard rows for this paper in the archive.
Report a problem or propose a change · a person checks every report against the paper or source before anything changes; decisions are listed on /corrections