Department of Physical Sciences home
Department of Physical Sciences home

Menu

Raghunath Ghara

Raghunath Ghara

Position
Ramanujan Fellow (DPS)
Location
Department of Physical Sciences, IISER Kolkata
Room No: AAC 221-G

Research group

Research areas

  • Astrophysics and cosmology, Low-frequency radio observations, Cosmic Reionization, Large-scale structure of the Universe

  • Ph.D. in Physics, 2012-2016, National Centre for Radio Astrophysics, Tata Institute of Fundamental Research
  • M.Sc. in Physics, 2009-2012, Harish-Chandra Research Institute (HRI), Homi Bhabha National Institute (HBNI)
  • B.Sc. in Physics (Honours), 2006-2009, Ramakrishna Mission Residential College, University of Calcutta
  • Ramanujan Fellow, IISER Kolkata (Current)
  • Postdoctoral fellow, University of Pennsylvania & Haverford College, (2023-2024)
  • Postdoctoral fellow, The Open University of Israel (2021-2023)
  • Postdoctoral fellow, Technion - Israel Institute of Technology (2019-2021)
  • Postdoctoral fellow, Stockholm University (2016-2019)
  • Ramanujan Fellowship (5 years) from SERB, DST, Govt. of India (2024)
  1. Enhancing the detectability of ionized Regions during the Epoch of Reionization, Ashish Mahajan, Rutvik; Ghara, Raghunath; Deo, Nishant Pradeep; Mishra, Arnab, Dec 2025, JCAP, Accepted.
  2. Constraints on the state of the IGM at z ∼ 8 − 10 using redshifted 21-cm observations with LOFAR, Ghara, R.; Zaroubi, S.; Ciardi, B.; Mellema, G.; Giri, S. K.; Mertens, F. G.; Mevius, M.; Koopmans, L. V. E.; Iliev, I. T.; Acharya, A.; Brackenhoff, S. A.; Ceccotti, E.; Chege, K.; Georgiev, I.; Ghosh, S.; Hothi, I.; Hfer, C.; Ma, Q.; Munshi, S.; Offringa, A. R.; Shaw, A. K.; Pandey, V. N.; Yatawatta, S. and Choudhury, M., July 2025, Astronomy & Astrophysics, Volume 699, id.A109, 21 pp.
  3. Asking Fast Radio Bursts (FRBs) for More than Reionization History, Shaw, A. K.; Ghara, R.; Beniamini, P.; Zaroubi, S.; Kumar, P.; November 2025, The Astrophysical Journal, Volume 993, Issue 2, id.209, 15 pp.
  4. First upper limits on the 21-cm signal power spectrum of neutral hydrogen at z=9.16 from the LOFAR 3C196 field, Ceccotti, E.; Offringa, A. R.; Mertens, F. G.; Koopmans, L. V. E.; Munshi, S.; Chege, J. K.; Acharya, A.; Brackenhoff, S. A.; Chapman, E.; Ciardi, B.; Ghara, R.;, Ghosh, S.; Giri, S. K.; Hfer, C.; Hothi, I.; Mellema, G.; Mevius, m.; Pandey, V. N.; Zaroubi, S.; November 2025, Monthly Notices of the Royal Astronomical Society, Volume 544, Issue 1, pp. 1255-1283, 29 pp.
  5. Inferring IGM parameters from the redshifted 21-cm Power Spectrum using Artificial Neural Networks, Choudhury, M.; Ghara, R.; Zaroubi, S.; Ciardi, B.; Koopmans, L. V. E.; Mellema, G.; Shaw, A. K.; Acharya, A.; Iliev, I. T.; Ma, Q. and Giri, S. K., June 2025, Journal of Cosmology and Astroparticle Physics, Volume 2025, Issue 06, id.003, 32 pp.
SL NO Grant Title Sponsoring Agency Project Period
1 Ramanujan Fellowship Research Grant DST June 2024-June 2029
  • Instructor- CS1101 - Introduction to Computer Programming, Aug-Dec 2025, IISER Kolkata (4 credits)
  • MS thesis Supervisor-PH5101-MS Project, Aug 2025-July 2026, IISER Kolkata (7 students, 20 credits)
  • Supervisor-PH5102-Independent Study, IISER Kolkata, Aug-Dec 2025 (2 students, 4 credits)
  • Project Supervisor-Research Project I (PH4112), IISER Kolkata, Aug-December 2025 (5 students, 4 credits).