Subaru HSC weak lensing of SDSS redMaPPer cluster satellite galaxies: Empirical upper limit on orphan fractions
Kumar et al. 2022 MNRAS 517, 4389-4404 (2022)
Overview
Education
- Ph.D in Astrophysics, IUCAA, 2018-24 Supervisor: Prof. Surhud More
- M.Sc. in Physics, Delhi University, 2014-16
- B.Sc(Hons.) in Physics, Delhi University, 2010-13
Work experience
- Aug 2024 - Sept 2024: Scientific Visitor (IISER Pune)
- Project: Using the weak-lensing profiles of satellite galaxies to constrain dark matter models
- Advisor: Prof. Susmita Adhikari
- July 2020 - 2024: Senior Research Fellow (IUCAA)
- Project: Environmental dependence on galaxy-halo connections for satellites using HSC weak lensing
- Project: Halo assembly bias using splashback radius
- Project: Environmental effects on dark matter distribution around satellite galaxies in galaxy clusters.
- Project: Shear Calibration in dense galaxy clusters.
- Project: Stellar to halo mass relation for satellies from gama groups.
- Supervisor: Prof. Surhud More
- July 2018 - 2020: Junior Research Fellow (IUCAA)
- Graduate School Coursework
- Projects: Environmental effects on dark matter distribution around satellite galaxies in galaxy clusters
- Supervisor: Prof. Surhud More
Skills
- Python, GitHub : Intermeddiate - Advanced level
- Machine Learning : Beginner - Intermeddiate level
- Bash Scripting : Beginner level
- C & C++ : Intermeddiate level
- SQL ,Pl-SQL, Visual Basic : Intermeddiate level
Publications
Over-abundance of orphan galaxies in the UniverseMachine
Kumar et al. 2024 https://doi.org/10.1093/mnrasl/slae023
Environmental dependence on galaxy-halo connections for satellites using HSC weak lensing
Kumar et al. 2024
Halo assembly bias using splashback radius
Garg, Kumar, More In prep.
Talks & Posters
Galaxy halo connection of satellite galaxies in clusters: role of environment
Invited seminar talk at Seminar Room (202), Physics Department, IIT Bombay, Powai, Mumbai, IIT - Bombay
Talk: Evolution of satellite galaxies in dense environments
Contributed talk at Pune-Mumbai Cosmology and Astro- Particle Meeting- 2024, IUCAA @ Pune
Talk: Over-abundance of orphan galaxies in the UniverseMachine
Contributed talk at 42nd meeting of Astronomical Society of India, IISC - Bengalure
Talk: Effect of cluster environment on dark matter distribution around satellite galaxies
Contributed talk at Largest Cosmological Surveys and Big Data Science, ICTS - 2023 @ Bengaluru
Talk: Environmental effects on dark matter distribution around satellites in galaxy clusters
Contributed talk at Young Astronomers' Meet- 2022, Aries @ Nainital
Poster: ‘Environmental effects on dark matter distribution in galaxy clusters’
Poster at Astronomical Society of India-2022, IIT Roorkee
Talk: Gravitational lensing around satelltie galaxies in clusters
Contributed talk at International Conference on Gravitation and Cosmology-2019, IISER Mohali
Poster: ‘Environmental effects on dark matter distribution in galaxy clusters’
Poster at Astronomical Society of India-2022, IIT Roorkee
Poster: ‘Environmental effects on dark matter distribution in galaxy clusters’
Poster at International Conference on Gravitation and Cosmology-2019, IISER Mohali