My research centers on theoretical investigations of the formation of the first luminous sources in the Universe, along with developing methods to detect these faint primordial objects and quantify their impact on the intergalactic medium (IGM). These early sources were instrumental in transforming the ionization and thermal state of the IGM during the Cosmic Dawn and the Epoch of Reionization. Overall, my work aims to probe the physical conditions of the high-redshift Universe, corresponding to the first billion years of cosmic history.
-
Enhancing the detectability of ionized Regions during the Epoch of Reionization by Mahajan R. A., Ghara R. , Deo N. P., Mishra A. Journal of Cosmology and Astroparticle Physics 2026 1-26 (2026)
-
Constraints on the state of the IGM at z 8 10 using redshifted 21-cm observations with LOFAR by Ghara R., Zaroubi S. , Ciardi B. , Mellema G. , Giri S. , Mertens F. , Mevius M. , Koopmans L. , Iliev I. , Acharya A. , Brackenhoff S. , Ceccotti E. , Chege K. , Georgiev I. , Ghosh S. , Hothi I. , Hfer C. , Ma Q. , Munshi S. , Offringa A. , Shaw A. , Pandey V. , Yatawatta S. , Choudhury M. Astronomy & Astrophysics 699 1-21 (2025)
-
Asking Fast Radio Bursts (FRBs) for More than Reionization History by Shaw A., Ghara R. , Beniamini P. , Zaroubi S. , Kumar P. The Astrophysical Journal 993 1-15 (2025)
-
Probing the intergalactic medium during the Epoch of Reionization using 21-cm signal power spectra by Ghara R., Shaw A. K., Zaroubi S., Ciardi B., Mellema G., Koopmans L. V. E., Acharya A., Choudhury M., Giri S. K., Iliev I. T., Ma Q., Mertens F. Astronomy & Astrophysics 687 1-15 (2024)
-
The morphology of the redshifted 21-cm signal from the Cosmic Dawn by Ghara R., Bag S., Zaroubi S., Majumdar S. Monthly Notices of the Royal Astronomical Society 530 191-202 (2024)
- Co-Principal Investigator
