INTER-UNIVERSITY CENTRE FOR ASTRONOMY AND ASTROPHYSICS
(An Autonomous Institution of the University Grants Commission)
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SEMINAR
Kabir Chakravarti |
CEICO, Institute of Physics of the Czech Academy of Sciences, Prague |
Investigating the connection between Dark Matter and GW merger events |
The standard model of cosmology establishes Dark Matter as a non-relativistic cold fluid, thanks to the many observations which necessitate its existence as well as constrain its theoretical possibilities. Constraints on Dark Matter are however significantly weaker at galactic/sub-galactic length-scales which make these prime areas to expect departure from cold fluid behaviour. Consequently, many beyond Cold Dark Matter (CDM) formulations have been investigated along these lines in the literature. A prime candidate among these formulations hypothesise that at galactic/sub galactic scales Dark Matter acquires wavelike behaviour which could give rise to a pressure-like contribution to the dynamics! In this talk, I will investigate a few specific consequences of the formulation of wavelike dark matter (WDM) upon the dynamics of compact binary inspirals. I will discuss the effects brought on by WDM upon individual binary systems as well as on a population of merging binaries. From the results of the population study I will match to observational data from LVK (GWTC-3). I will conclude by highlighting the future potential of our work in the light of the upcoming GW missions. |
IUCAA Lecture Hall, Bhaskara 3 |
May 8, 2025, 16:00 hrs. |