Sahni is reported to have studied the universe, more specifically its large-scale structure, the early inflationary phase and cosmological constant.[7] His achievements include the establishment of a cosmic no-hair theorem related to inflation, analysis of the universe structure using self-developed statistical methods, discovery of novel models of dark energy and dark matter, design of unified models of Inflation and dark energy and the elucidation of Big Bang theory using Braneworld physics.[8] His studies have been documented by way of a number of articles[9][note 2] and the online article repository of the Indian Academy of Sciences has listed 68 of them.[10]
Sahni is a member of the International Astronomical Union.[11] He has delivered plenary addresses at many conferences and seminars; "Cosmology after the BOOMERANG experiment" delivered at the Astronomy Seminars 2000 of the Tata Institute of Fundamental Research[12] and Frontiers of Cosmology and Gravitation (ICGC 2011) of the International Centre for Theoretical Sciences
were two of them.[13] The School of Applied Mathematical and Physical Sciences of the National Technical University of Athens has listed one of his talks on Dark matter and dark energy, delivered in March 2004, as the best cited among Aegean School talks.[14] He is also a recipient of the Homi Bhabha Medal (2014) of the Indian National Science Academy.[15]
Selected bibliography
Chapters
Eleftherios Papantonopoulos; Varun Sahni (Chapter author) (7 January 2005). "Dark Matter and Dark Energy". The Physics of the Early Universe. Springer Science & Business Media. pp. 141–. ISBN978-3-540-22712-0. {{cite book}}: |author2= has generic name (help)
^"Faculty". Inter-University Centre for Astronomy and Astrophysics. 19 October 2017. Retrieved 19 October 2017.
^"Summary of faculty research interests". Inter-University Centre for Astronomy and Astrophysics. 19 October 2017. Archived from the original on 11 June 2010. Retrieved 19 October 2017.{{cite web}}: CS1 maint: unfit URL (link)