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A list of all the posts and pages found on the site. For you robots out there, there is an XML version available for digesting as well.
Pages
Posts
Blog Post number 1
Published:
This is a sample blog post. Lorem ipsum I can’t remember the rest of lorem ipsum and don’t have an internet connection right now. Testing testing testing this blog post. Blog posts are cool.
portfolio
Portfolio item number 1
Short description of portfolio item number 1
Portfolio item number 2
Short description of portfolio item number 2
publications
Moffat Modified Gravity (MOG)
Published in , 2022
It is a review article of John Moffat theory of gravity
Recommended citation: Harikuamr. S 2022 , Universe 8 (2022) 5, 259
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Propagation and lensing of gravitational waves in Palatini f(R) gravity
Published in , 2025
The results we obtained could be valuable for further metric-affine gravity vs general relativity tests involving lensing of gravitational waves and comparison of luminosity distances measured from electromagnetic and gravitational wave sources.
Recommended citation: Harikumar, S. (2024). "Phys. Rev. D 109, 124014
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Investigating the redshift evolution of lensing galaxy density slopes via model-independent distance ratios
Published in , 2025
We introduce a novel method that is independent of the dark energy assumed in the model to investigate the mass density slopes of lensing galaxies and their redshift evolution using an extended power-law (EPL) model.
Recommended citation: A&A, 694, A196 (2025)
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Microlensing of long-duration gravitational wave signals originating from Galactic sources
Published in , 2025
This paper is about the number 1. The number 2 is left for future work.
Recommended citation: Suyamprakasam, S. (2025). "Phys.Rev.D 112 (2025) 12, 124019
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talks
IUCAA:Lensing of gravitational waves by Globular clusters and dark matter
Published:
More information here
Ripple in spacetime: The way we hear Black Holes
Published:
Until recently, everything we knew about the Universe came from electromagnetic waves like light in all its forms emitted by stars, galaxies, and other cosmic objects. However, observing black holes using light is extremely challenging because they do not emit light directly. In 2015, a revolutionary discovery changed the way we explore the cosmos. Scientists detected gravitational waves for the first time, tiny ripples in space and time produced when massive objects like binary black holes collide and merge. This marked the beginning of a completely new way of observing the Universe, using a messenger different from light. In this talk, I will introduce you to binary black holes and neutron stars, explain how we detect them using gravitational waves, and discuss how these observations are opening a new window onto the Universe and shaping the future of astronomy.
Gravitational Wave Astronomy: A New Frontier in Astrophysics
Published:
The first direct detection of gravitational waves by the LIGO Scientific Collaboration in 2015 opened a completely new observational window on the Universe. Since then, gravitational wave (GW) observations have revealed merging black holes and neutron stars and have begun to transform our understanding of the most extreme objects in the cosmos.
teaching
Gravitational Waves: Theory & Analysis
Doctoral Studies, Room 30, Seminar Room CAMK, 2026
This course provides a introduction to gravitational waves (GWs), from their theoretical prediction in General Relativity to modern detection techniques and astrophysical applications. Students will learn the mathematical foundations of gravitational radiation, data analysis methods, gravitational lensing and the scientific discoveries enabled by current GW observatories.