302 citations · 1.4k across the 41 of their papers we have counts for
41 papers
A Splashback-like Feature of Central Galaxies in Galaxy Clusters
Yuanyuan Zhang, Susmita Adhikari, Louise O. V. Edwards +3
We investigate a splashback-like feature in the outer region of central galaxies (CGs) in clusters. This feature is detected as a "dip" in the radial slope of the CG surface bright…
Constraints on Dark Matter Self-Interactions from weak lensing of galaxies from the Dark Energy Survey around clusters from the Atacama Cosmology Telescope Survey
Susmita Adhikari, Arka Banerjee, Bhuvnesh Jain +2
Self--interactions of dark matter particles impact the distribution of dark matter in halos. The exact nature of the self--interactions can lead to either expansion or collapse of…
Inferring host-galaxy properties of LIGO-Virgo-KAGRA's black holes
Aditya Vijaykumar, Maya Fishbach, Susmita Adhikari +1
Observations of gravitational waves from binary black hole (BBH) mergers have measured the redshift evolution of the BBH merger rate. The number density of galaxies in the Universe…
The mass profiles of dwarf galaxies from Dark Energy Survey lensing
Joseph Thornton, Alexandra Amon, Risa H. Wechsler +7
We present a novel approach to extracting dwarf galaxies from photometric data to measure their average halo mass profile with weak lensing. We characterise their stellar mass and…
The abundance of core--collapsed subhalos in SIDM: insights from structure formation in CDM
Neev Shah, Susmita Adhikari
Dark matter halos can enter a phase of gravothermal core--collapse in the presence of self-interactions. This phase that follows a core--expansion phase is thought to be subdominan…
The impact of halo concentration on the Sunyaev Zel'dovich effect signal from massive galaxy clusters
Eric J. Baxter, Shivam Pandey, Susmita Adhikari +4
The Sunyaev Zel'dovich (SZ) effect is sensitive to the pressure of ionized gas inside galaxy clusters, which is in turn controlled largely by the gravitational potential of the clu…
Buzzard to Cardinal: Improved Mock Catalogs for Large Galaxy Surveys
Chun-Hao To, Joseph DeRose, Risa H. Wechsler +6
We present the Cardinal mock galaxy catalogs, a new version of the Buzzard simulation that has been updated to support ongoing and future cosmological surveys, including DES, DESI,…
The Effect of Splashback on Weak Lensing Mass Estimates of Galaxy Clusters and Groups
Yuanyuan Zhang, Susmita Adhikari, Matteo Costanzi +3
The splashback radius of a dark matter halo, which corresponds to the first apocenter radius reached by infalling matter and substructures, has been detected around galaxy clusters…
Symphony: Cosmological Zoom-in Simulation Suites over Four Decades of Host Halo Mass
Ethan O. Nadler, Philip Mansfield, Yunchong Wang +9
We present Symphony, a compilation of cosmological, cold-dark-matter-only zoom-in simulations spanning four decades of host halo mass, from $10^{15}~M_{\mathrm{\o…
A Better Way to Define Dark Matter Haloes
Rafael Garcia, Edgar Salazar, Eduardo Rozo +5
Dark matter haloes have long been recognized as one of the fundamental building blocks of large scale structure formation models. Despite their importance -- or perhaps because of…
Astrophysical Tests of Dark Matter Self-Interactions
Susmita Adhikari, Arka Banerjee, Kimberly K. Boddy +11
Self-interacting dark matter (SIDM) arises generically in scenarios for physics beyond the Standard Model that have dark sectors with light mediators or strong dynamics. The self-i…
Observational Inference on the Delay Time Distribution of Short Gamma-ray Bursts
Michael Zevin, Anya E. Nugent, Susmita Adhikari +3
The delay time distribution of neutron star mergers provides critical insights into binary evolution processes and the merger rate evolution of compact object binaries. However, cu…
Insights into the origin of halo mass profiles from machine learning
Luisa Lucie-Smith, Susmita Adhikari, Risa H. Wechsler
The mass distribution of dark matter haloes is the result of the hierarchical growth of initial density perturbations through mass accretion and mergers. We use an interpretable ma…
Accurate Model of the Projected Velocity Distribution of Galaxies in Dark Matter Halos
Han Aung, Daisuke Nagai, Eduardo Rozo +2
We present a percent-level accurate model of the line-of-sight velocity distribution of galaxies around dark matter halos as a function of projected radius and halo mass. The model…
Snowmass2021: Vera C. Rubin Observatory as a Flagship Dark Matter Experiment
Yao-Yuan Mao, Annika H. G. Peter, Susmita Adhikari +30
Establishing that Vera C. Rubin Observatory is a flagship dark matter experiment is an essential pathway toward understanding the physical nature of dark matter. In the past two de…
Snowmass2021 Cosmic Frontier White Paper: Dark Matter Physics from Halo Measurements
Keith Bechtol, Simon Birrer, Francis-Yan Cyr-Racine +41
The non-linear process of cosmic structure formation produces gravitationally bound overdensities of dark matter known as halos. The abundances, density profiles, ellipticities, an…
Dark Energy Survey Year 3 Results: Three-Point Shear Correlations and Mass Aperture Moments
L. F. Secco, M. Jarvis, B. Jain +87
We present high signal-to-noise measurements of three-point shear correlations and the third moment of the mass aperture statistic using the first 3 years of data from the Dark Ene…
Connecting galaxy evolution in clusters with their radial profiles and phase space distribution: results from the IllustrisTNG hydrodynamical simulations
Tara Dacunha, Matthew Belyakov, Susmita Adhikari +3
We study the population of galaxies around galaxy clusters in the hydrodynamic simulation suite IllustrisTNG 300-1 to study the signatures of their evolutionary history on observab…
Shocks in the Stacked Sunyaev-Zel'dovich Profiles of Clusters II: Measurements from SPT-SZ + Planck Compton-y Map
D. Anbajagane, C. Chang, B. Jain +43
We search for the signature of cosmological shocks in stacked gas pressure profiles of galaxy clusters using data from the South Pole Telescope (SPT). Specifically, we stack the la…
The Effects of Dark Matter and Baryonic Physics on the Milky Way Subhalo Population in the Presence of the Large Magellanic Cloud
Ethan O. Nadler, Arka Banerjee, Susmita Adhikari +2
Given recent developments in our understanding of the Large Magellanic Cloud's (LMC) impact on the Milky Way's (MW) dark matter subhalo population, we compare the signatures of dar…
Superclustering with the Atacama Cosmology Telescope and Dark Energy Survey: I. Evidence for thermal energy anisotropy using oriented stacking
M. Lokken, R. Hložek, A. van Engelen +104
The cosmic web contains filamentary structure on a wide range of scales. On the largest scales, superclustering aligns multiple galaxy clusters along inter-cluster bridges, visible…
The Signatures of Self-Interacting Dark Matter and Subhalo Disruption on Cluster Substructure
Joy Bhattacharyya, Susmita Adhikari, Arka Banerjee +4
The abundance, distribution and inner structure of satellites of galaxy clusters can be sensitive probes of the properties of dark matter. We run 30 cosmological zoom-in simulation…
The mass and galaxy distribution around SZ-selected clusters
T. Shin, B. Jain, S. Adhikari +136
We present measurements of the radial profiles of the mass and galaxy number density around Sunyaev-Zel'dovich-selected clusters using both weak lensing and galaxy counts. The clus…
UniverseMachine: Predicting Galaxy Star Formation over Seven Decades of Halo Mass with Zoom-in Simulations
Yunchong Wang, Ethan O. Nadler, Yao-Yuan Mao +3
We apply the empirical galaxy--halo connection model UniverseMachine to dark matter-only zoom-in simulations of isolated Milky Way (MW)--mass halos along with their parent cosmolog…