BINA

Abstract

Clusters of galaxies are powerful cosmological probes sampling the high end of the mass function of collapsed structures, offering stringent tests of the structure formation paradigm. At their heart lie massive bright galaxies resulting from the merging event of hundreds of smaller ones. Accompanied by powerful AGN regulating their baryonic cycle, these central galaxies are undergoing multiple astrophysical processes, with ongoing star formation, from both merging events and cluster-scale cooling flow. While luminous matter is accessible with current facilities, dark matter, representing nearly 80% of the total cluster mass, remains elusive. Thanks to strong gravitational lensing in cluster cores, one can trace the co-evolution of the luminous and dark matter to reveal both how the brightest galaxies in our universe grow and constraints the properties of dark matter such as its cross-section.

Collaborators

Name	Affiliation & Contact
Guillaume Mahler	Université de Liege (ULiège, Belgium) Mr Mahler
C.S. Stalin	Indian Institue of Astrophysics (IIA) (Bengaluru ,India) Mr Stalin
Suvendu Rakshit	ARIES (Nainital, India) Mr Rakshit

Proposals

• Mahler, G. ; Suvendu, R. ; Stalin, C S , "Co-evolution of Dark and luminous matter at the heart of the most massive clusters" Telescope: 3.6-m Devasthal Optical Telescope (DOT) ; Observing Cycle: DOT-2025-C1 ; Time Requested: 3 nights (12 quarters) ; Time Allocated: 1 night (4 quarters)
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