5 papers
Forest without Trees is still Fruitful: Constraints on the thermal state of the neutral IGM at with the 21-cm forest power spectrum
Tomáš Šoltinský, Arnab Chakraborty, Girish Kulkarni +10
Neutral regions of the intergalactic medium (IGM) during the Epoch of Reionization (EoR) remain largely unexplored due to the limitations of existing probes. Owing to discoveries o…
TORRCH: Tomographic reconstruction of the reionization of cosmic hydrogen with Ly emitters and non-Ly-selected galaxies
Soumak Maitra, Girish Kulkarni, Vipul Arora +5
Tomographic reconstruction of reionization is a long-sought goal. It would move the field beyond global summary statistics, such as the volume-averaged ionised fraction, to direct,…
The Lyman- emitter bispectrum as a probe of reionization morphology
Soumak Maitra, Girish Kulkarni, Shikhar Asthana +3
Ly emitters (LAEs) have now been discovered out to redshift , and are valuable probes of the reionization history at redshifts beyond the reach of other currently availab…
Efficient neutral-IGM inference from noisy 21-cm forest spectra with latent-space U-Net encoding and XGBoost
Sameer K. Patil, Tomáš Šoltinský, Soumak Maitra +1
The 21-cm forest, comprising narrow absorption features imprinted on the radio spectra of high-redshift radio-loud quasars by intervening neutral hydrogen, offers a uniquely sensit…
DeepCHART: Mapping the 3D dark matter density field from Ly forest surveys using deep learning
Soumak Maitra, Matteo Viel, Girish Kulkarni
We present DeepCHART (Deep learning for Cosmological Heterogeneity and Astrophysical Reconstruction via Tomography), a deep learning framework designed to reconstruct the three-dim…