Prabhakar Tiwari
Associate Professor, Physics Program
Office: R206
Dr. Prabhakar Tiwari earned his Ph.D. in Physics from the Indian Institute of Technology Kanpur in 2014. He subsequently embarked on an academic journey dedicated to collaborative research. During this journey, he had the privilege of serving as a Lady Davis Postdoctoral Fellow at Technion – Israel Institute of Technology in Haifa, Israel, collaborating with Professor Adi Nusser.
After this enriching experience, Dr. Tiwari’s academic path led him to the National Astronomical Observatories CAS in Beijing, where he actively contributed to a variety of cosmology-related projects. His dedication led to the establishment of official collaborations between SDSS and LOFAR radio surveys. During his tenure at the observatory, he was honored with a President’s International Fellowship Initiative (PIFI) fellowship and received grants from the National Natural Science Foundation of China (NSFC).
After nearly six years at the National Astronomical Observatories CAS in Beijing, Dr. Tiwari embarked on a new phase in his career. He currently serves as an Associate Professor in the Physics Program at GTIIT, where his commitment to research and academia continues to have a positive impact.
In his research, Dr. Tiwari focuses on the exploration of the large-scale structure through galaxy surveys, with a particular emphasis on the study of radio galaxy catalogs from various surveys. His current work primarily involves the analysis of the LoTSS catalog to extract cosmological signals. Additionally, he is actively exploring cosmology projects with the Square Kilometre Array (SKA) survey, where he contributes as an associate member of the SKA cosmology science working group.
- Exploration of Large-Scale Structure: Employing data from various cosmological surveys
- Galaxy Clustering and Structure Formation: Investigating the intricate processes that lead to the formation of cosmic structures
- Observations Related to the Cosmological Principle: Specifically, exploring isotropy and homogeneity at large scales
- Cosmology Projects: With a primary focus on radio surveys, including collaborations with LOFAR, SKA, and GMRT
Prabhakar Tiwari, Rahul Kothari, Pankaj Jain, Superhorizon perturbations: A possible explanation of the Hubble–Lemaˆıtre Tension and the Large Scale Anisotropy of the Universe, The Astrophysical Journal Letters, Volume 924, Number 2, January 2022 (impact factor: 7.4).
Prabhakar Tiwari, Ruiyang Zhao, Jinglan Zheng, Gong-Bo Zhao, David Bacon, Dominik J. Schwarz, Galaxy power spectrum and biasing results from the LOFAR Two-metre Sky Survey (first data release), The Astrophysical Journal, Volume 928, Number 1, March 2022 (impact factor: 5.5).
Prabhakar Tiwari, Gong-Bo Zhao, Adi Nusser, The clustering properties of AGNs/quasars in CatWISE2020 catalog, The Astrophysical Journal, Volume 943, Number 2, Pages 116 (8pp), February 2023(impact factor: 5.5).
Prabhakar Tiwari, Pavan K. Aluri, Large angular scale multipoles at redshift ∼0.8, The Astrophysical Journal, Volume 878, Issue 1, Page No. 32, June 2019 (impact factor: 5.5)
Prabhakar Tiwari, Constraining axionlike particles using the distance-duality relation, Physical Review D, Volume 95, Issue 2, Page No. 023005, Year 2017 (impact factor: 4.5). – listed in Particle Data Group (2016) and 2017 update
Prabhakar Tiwari, Adi Nusser, Revisiting the NVSS number count dipole, Journal of Cosmology and Astroparticle Physics, Volume 2016, Issue 3, Page No. 62, Year 2016 (impact factor: 5.5).
Prabhakar Tiwari, Rahul Kothari, Abhishek Naskar, Sharvari Nadkarni-Ghosh, Pankaj Jain, Dipole anisotropy in flux density and source count distribution in radio NVSS data Astroparticle Physics, Volume 61, Page No. 1, Year 2015 (impact factor: 3.43).
S. J. Nakoneczny, D. Alonso, M. Bilicki, D.J. Schwarz, C.L. Hale, A. Pollo, C. Heneka, P. Tiwari, J. Zheng, M. Bruggen, M.J. Jarvis, T.W. Shimwell [LOFAR collaboration]¨ Cosmology from LOFAR Two-metre Sky Survey Data Release 2: Cross-correlation with the cosmic microwave background, A&A, 681, A105 (2024) (impact factor: 6.24).
C L Hale, D J Schwarz, P N Best, S J Nakoneczny, D Alonso, D Bacon, L Bohme, N¨ Bhardwaj, M Bilicki, S Camera, C S Heneka, M Pashapour-Ahmadabadi, P Tiwari, J Zheng, K J Duncan, M J Jarvis, R Kondapally, M Magliocchetti, H J A Rottgering, T W, Shimwell [LOFAR collaboration], Cosmology from LOFAR Two-metre Sky Survey Data Release 2: angular clustering of radio sources, Monthly Notices of the Royal Astronomical Society, Volume 527, Issue 3, January 2024, Pages 6540–6568 (impact factor: 5.23).
Arnaud de Mattia, Vanina Ruhlmann-Kleider, Anand Raichoor, Ashley J. Ross,….,Prabhakar Tiwari, ….[SDSS collaboration], The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: measurement of the BAO and growth rate of structure of the emission line galaxy sample from the anisotropic power spectrum between redshift 0.6 and 1.1, Monthly Notices of the Royal Astronomical Society, Volume 501, Issue 4, Page No. 5616, December 2020 (impact factor: 5.2).