School and Workshop on 21-cm Cosmology

Session

Session 9

11 Mar 2026, 10:05

AG66

Conveners

Session 9

• Chair: Girish Kulkarni (TIFR)

48. Probing the End of Reionization with 21cm-[CII] Cross-Correlation

Shiriny Akthar (IIT Indore)

11/03/2026, 10:05

The Epoch of Reionization (EoR) marks the last major phase transition of the Universe, during which the Intergalactic Medium (IGM) evolves from being predominantly neutral to fully ionized. The line intensity mapping (LIM) of different spectral lines originating from this era are direct and most promising probes for the EoR. The two spectral lines that stand out for the LIM surveys of the EoR...

51. Probing Modified Gravity with SKA: Redshift-Space 21-cm Bispectrum Multipoles

Sourav Pal (ISI Kolkata)

11/03/2026, 10:25

The upcoming Square Kilometre Array (SKA) will map the large-scale structure of the Universe with unprecedented sensitivity via 21-cm intensity mapping. While standard analyses focus on the power spectrum, non-linear gravitational evolution encodes rich information in higher-order statistics. In this work, we investigate the redshift-space 21-cm bispectrum and its spherical harmonic multipoles...

52. Minkowski Functionals of the 21 cm Signal as a Probe of Primordial Features

Kanan Vijay Virkar (IIA)

11/03/2026, 10:45

The redshifted 21 cm signal from the cosmic dawn and Epoch of Reionization (EoR) encodes important information about both astrophysical processes and primordial physics, such as inflation. In this work, we use morphological statistics to explore the sensitivity of the 21 cm signal to inflationary features and EoR dynamics simultaneously. Focusing on primordial features from particle production...