First Chennai Symposium on Gravitation and Cosmology

January 22-24, 2020

The Symposium

Chennai presently has three major institutes that have research groups working in the areas of gravitation and cosmology: Chennai Mathematical Institute (CMI), Indian Institute of Technology Madras (IIT-M), and the Institute of Mathematical Sciences.

The first Chennai Symposium on Gravitation and Cosmology will be held at IIT-M during January 22-24, 2020. The aims of the Symposium can be said to be two-fold: (i) to showcase Chennai as an attractive destination for research in the areas of gravitation and cosmology, and (ii) to provide exposure to graduate students and post-doctoral fellows to the recent developments in these areas.

Due to constraints on accommodation, we are unable to encourage participants (other than the invited speakers) from outside Chennai. If you are from Chennai and are interested in attending the Symposium, please write to both the IIT-M members of the scientific organizing committee listed below by January 15. It is important that you write to us in time as we need to know the expected number of participants for logistical reasons.

The Symposium is supported by the Department of Physics and the Office of the Dean, International and Alumni Relations, IIT-M.

Scientific organizing committee

  • K. G. Arun, CMI
  • Dawood Kothawala, IIT-M
  • Alok Laddha, CMI
  • L. Sriramkumar, IIT-M

Local organizing committee (all from IIT-M)

  • Sampurn Anand
  • Ashmita Das
  • K. Hari
  • Suvashis Maity
  • Chandra Kant Mishra
  • Debottam Nandi
  • Kaushik Paul
  • H. V. Ragavendra
  • Pankaj Saha
  • L. Sriramkumar
  • Sagarika Tripathy


The Symposium will be held in Hall 3 of the ICSR building. The ICSR building is right next to the Gajendra Circle on campus. The Brahmagupta Colloquium will be held in the Auditorium right opposite to Hall 3 in the ICSR building.

Schedule (click here to download a PDF file of the schedule)

Wednesday, January 22

09:15-10:15Sayan KarShadows, echoes and memory
10:15-10:45Coffee break
10:45-11:45Sudipta SarkarGoing beyond Einstein: Theoretical and observational constraints
11:45-12:15Anand SenguptaUnveiling the spectrum of inspiraling binary black holes
12:15-12:45Debottam NandiEinstein or Jordan: Seeking answers from the reheating constraints
14:00-15:00Suvrat RajuA canonical view of holography
15:00-15:30Debika ChowdhuryInitial conditions for inflation
15:30-15:50H. V. RagavendraJust enough inflation
15:50-16:10Karthik RajeevGeneralized Schwinger effect and cosmological particle production
16:10-16:30Aneesh P. B.Conserved charges in asymptotically de Sitter spacetimes
16:30-17:00High tea
17:00-18:00Bala IyerBrahmagupta Colloquium: Experiments driving theory: The two-body problem in general relativity

Thursday, January 23

09:00-10:00Anshuman MaharanaInflation in string theory
10:00-10:30T. R. GovindarajanWhat if photon has a mass?
10:30-11:00Coffee break
11:00-12:00Nishikanta KhandaiCosmological hydrodynamical simulations of structure formation
12:00-13:00Sukanta BoseWhat can GWs tell us about the densest form of matter, the universe's expansion and extra dimensions?
14:00-15:00Amitabh VirmaniQNMs of exotic compact objects
15:00-15:30P. AjithGravitational lensing of gravitational waves
15:30-16:00Coffee break
16:00-16:30Shasvath KapadiaCompact binary merger rates from LIGO-Virgo’s first and second observing runs
16:30-17:00M. SaleemMulti-messenger astronomy using GWs

Friday, January 24

09:00-10:00Chandra Kant MishraTesting general relativity using gravitational waves
10:00-10:30Sumanta ChakrabortyStrong cosmic censorship conjecture
10:30-11:00Coffee break
11:00-12:00Shiv SethiCosmological implications of alternative dark matter
12:00-12:30Bidisha ChakrabartyNon-linear Langevin dynamics via holography
12:30-13:00Shubroneel ChakrabartiGeneralized Garfinkle-Vachaspati transformation with dilaton
14:00-15:00Archana PaiUpdates from LIGO-Virgo observing runs
15:00-15:20DivyajyotiAstrophysics of higher order modes
15:20-15:40Sayantani DattaParameterized tests of general relativity with multi-band observations of gravitational waves
15:40-16:00Pankaj SahaOn the equation of state during reheating
16:00-17:00Vote of thanks, followed by coffee


Click here to download a file containing the complete list of participants.

Instructions for participants

Click here to download a file containing essential instructions related to arrival, departure, accommodation and food.