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Prof. Bala R. Iyer

Prof.  Bala R. Iyer (28th December 1952) was Chairman, Theoretical Physics Group for two terms and retired as Senior Professor from Raman Research Institute.

Early Years and Education

Prof. Iyer was born to Sri N. Ramakrishnan and Smt. Parvathy Ramakrishnan on 28th December 1952 at Parli, Kerala. He had his early education at Kalyan. He obtained B.Sc in 1973 from Ramnarain Ruia College and M.Sc. degree from Bombay University in 1976. He obtained Ph.D from Bombay University in 1980.


Prof. Bala Iyer joined RRI as a post doctoral fellow in 1980. He grew to become professor in 2001.

Iyer has been the Secretary of IAGRG during 1994-98 and President of IAGRG during 2006-08. He has been a member of the Nominating Committee of ISGRG from 2004-10 and Committee member of ISGRG for 2010-19. For the online journal Living Reviews in Relativity, he has been the member of the Editorial Board since 1998 and Subject Editor for Gravitational Waves since 2000 . He is the Chair of the IndIGO Consortium since its inception in 2009 and its representative on the Gravitational Wave International committee (GWIC) since 2011. Iyer has been a member of the LIGO Scientific Collaboration since 2011 and currently the Principal Investigator of the IndIGO participation in LSC.

Iyer was a visiting scientist at Washington University St. Louis, USA; University of Wales, Cardiff, UK.; DARC, Observatoire de Paris Meudon, France; Institut d'Astrophysique de Paris, Paris, France; Institut des Hautes Etudes Scienti ques, Bures sur Yvette, France; Max-Planck-Institut fur Physik und Astrophysik Garching, German; International Centre for Theoretical Physics, Trieste, Italy; School of Mathematical Sciences Queen Mary and Westeld College, London U.K.; Astrophysics Group and LIGO, Caltech, Pasadena, USA; Albert Einstein Institute, Max Planck Institut fur Gravitationsphysik, Golm, Germany; Department of Earth and Space Science, Osaka University, Toyonaka, Japan; Center for Gravitational Wave Physics, Penn State University, State College, USA; and Institut Henri Poincare (IHP), Paris, France.

Scientific Work

During his formative years for a decade he worked on issues related to perturbations in classical GR and problems in GR with potential astrophysical implications. Since 1989, he has been involved in high accuracy post-Newtonian computations of gravitational waves from inspiralling compact binaries made of neutron stars and black holes. These form the starting point for construction of high accuracy templates for interferometric GW detectors like LIGO and Virgo and also the limit to validate the early inspiral phase  of numerical relativity waveforms of late inspiral and merger. He worked on construction of PN template families and their extensions using resummation methods like Pade approximants. Over the years, along with Phd students he worked on extensions to GW from compact binaries in elliptical orbits. They also worked on implications for parameter estimation and test of gravity using GW observations. Since 2009 as Chair of IndIGO Consortium, Iyer was involved in proposals to extend the global network of GW detectors to realize GW astronomy in the coming decade. In 2011, this led to the LIGO-India proposal, a Mega-Project on Indian Soil in collaboration with LIGO, USA and its international partners, Australia, Germany and U.K. Currently, LIGO-India is in its final stages of consideration by the Indian government.


Prof. Iyer was elected as Fellow of American Physical Society(2012) and International Society of General Relativity and Gravitation (2013).


Prof. Iyer has been a member of The International Society on General Relativity and Gravitation (ISGRG), International Astronomical Union (IAU), Indian Association for General Relativity and Gravitation (IAGRG), Indian Physics Association Bangalore Chapter and American Physical Society (APS) USA.


Reading Fiction and non-fiction and watching movies


Born 28th December 1952
Parli, Kerala
Field: Theoretical Physics

Raman Research Institute, Bangalore

Alma mater Bombay University, Mumbai
  Curriculum Vitae

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