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Parameswaran Ajith

Recent observations of gravitational waves by LIGO and Virgo have opened up a unique observational window onto the Universe. Parameswaran Ajith’s research spans different aspects of the physics and astronomy of gravitational waves. His research group is interested in the theoretical modeling of the expected signals from various astrophysical sources, probes of strong gravity using gravitational-wave observations and the study of astrophysical black holes using this new branch of astronomy. Combining analytical calculations in general relativity with large-scale numerical-relativity simulations, Ajith pioneered a “phenomenological” approach for the modeling the expected gravitational-wave signals from binary black holes. Waveforms constructed using this method were employed in the parameter estimation of the LIGO/Virgo events and for testing the consistency of the observed signals with Einstein’s theory of general relativity. In the LIGO-Virgo collaboration, Ajith’s research group played an active role in preforming some of the first tests of Einstein’s theory using gravitational-wave observations.


PI of the Indo-US Centre for the Exploration of Extreme Gravity funded by the Indo-US Science and Technology Forum, 2016-2018.

Head of the Max Planck Partner Group in Astrophysical Relativity and Gravitational-Wave Astronomy at ICTS-TIFR, supported by the Max Planck Society, 2015-2018.

Ramanujan Fellowship from the Department of Science and Technology, India, 2013-2018.

Honorable mention in the PhD Thesis Prize competition by the Gravitational-Wave International Committee (2007). , 2007.

International Max Planck Scholarship for Doctoral Students , 2004 – 2007.

Relevant Publications

B. P. Abbott et al. [LIGO Scientific and Virgo Collaborations], "Observation of Gravitational Waves from a Binary Black Hole Merger," Phys. Rev. Lett. 116, 061102 (2016).

Ab. Ghosh, Ar. Ghosh, N. K. Johnson-McDaniel, C. K. Mishra, P. Ajith, W. Del Pozzo, D. A. Nichols, Y. Chen, A. B. Nielsen, C. P. L. Berry, L. London, "Testing general relativity using golden black-hole binaries," Phys. Rev. D 94, 021101 (R), 2016.

A. Ghosh, W. Del Pozzo and P. Ajith, "Estimating parameters of binary black holes from gravitational-wave observations of their inspiral, merger and ringdown," Phys. Rev. D 94, 104070, 2016.

P. Ajith et al, "An effectual template bank for the detection of gravitational waves from inspiralling compact binaries with generic spins," Phys. Rev. D 89, 084041, 2014.

P. Ajith et al, "Inspiral-merger-ringdown gravitational-waveforms for black-hole binaries with non-precessing spins," Phys. Rev. Lett. 106, 241101, 2011.



CIFAR Azrieli Global Scholar Gravity & the Extreme Universe


International Centre for Theoretical Sciences (TIFR)


PhD Max Planck Institute for Gravitational Physics and University of Hannover

MSc Physics Mahatma Gandhi University

BSc Physics University of Calicut



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