81 citations · 370 across the 26 of their papers we have counts for
23 papers · 1 filter
Measuring the Clustering of tSZ-Selected Galaxy Clusters with SPT-3G
E. S. Martsen, D. Anbajagane, L. E. Bleem +96
We present a measurement of the spatial clustering of galaxy clusters selected via the thermal Sunyaev-Zel'dovich (tSZ) signal. Using a cluster catalog derived from five years of S…
Baryonic Imprints on DM Halos: characterizing the full concentration-mass probability distribution with CAMELS
Elisa J. Gao, Dhayaa Anbajagane
The halo concentration, which represents the distribution of matter within a halo, is a vital tool for modeling the matter distribution on scales ranging from megaparsecs to sub-ki…
Baryonic Imprints on DM Halos: the concentration-mass relation and its dependence on 28 model parameters in the CAMELS suite
Cami Delgado, Dhayaa Anbajagane
The evolution of baryons in halos, as well as their gravitational impact on the total-matter phase space, has a rich phenomenology and is vital in answering many questions in both…
Primordial Physics in the Nonlinear Universe: Revealing the oscillating halo bias from cosmological collider models
Dhayaa Anbajagane, Neal Dalal
The initial conditions of our Universe contain a wealth of information about the particle physics of very high energies. One such class of signatures, called cosmological colliders…
Primordial Physics in the Nonlinear Universe: Towards particle constraints using the Weak lensing, Thermal SZ, and X-ray fields
Dhayaa Anbajagane
Primordial non-Gaussianities (PNGs) are a broad class of features in the initial density field that are connected to the particle physics of the early Universe. Measuring the ampli…
Simulation-based inference with the integrated 3PCF
David Gebauer, Anik Halder, Stella Seitz +1
We present , a simulation-based inference (SBI) framework for analysing a higher-order weak lensing statistic, the integrated 3-point correlation function (i3PCF)…
Probing baryonic feedback and cosmology with 32-point statistic of FRBs and galaxies
Kritti Sharma, Elisabeth Krause, Vikram Ravi +4
The impact of galaxy formation processes on the matter power spectrum is uncertain and may bias cosmological parameters inferred by large-scale structure surveys. Fast Radio Bursts…
Primordial Physics in the Nonlinear Universe: signatures of inflationary resonances, excitations, and scale dependence
Dhayaa Anbajagane, Hayden Lee
Primordial non-Gaussianities (PNGs) are imprints in the initial density field sourced by the dynamics of inflation. These dynamics can induce scale dependence, oscillations, and ot…
Primordial Physics in the Nonlinear Universe: mapping cosmological collider models to weak-lensing observables
Dhayaa Anbajagane, Hayden Lee
Primordial non-Gaussianities (PNGs) are features in the initial density field that provide a window into the nonlinear dynamics of particles during the inflationary epoch. Among th…
Testing halo models for constraining astrophysical feedback with multi-probe modeling: I. 3D Power spectra and mass fractions
Pranjal R. S., Shivam Pandey, Dhayaa Anbajagane +2
Upcoming Stage-IV surveys will deliver measurements of distribution of matter with unprecedented precision, demanding highly accurate theoretical models for cosmological parameter…
Map-level baryonification: unified treatment of weak lensing two-point and higher-order statistics
Alan Junzhe Zhou, Marco Gatti, Dhayaa Anbajagane +3
Precision cosmology benefits from extracting maximal information from cosmic structures, motivating the use of higher-order statistics (HOS) at small spatial scales. However, predi…
Map-level baryonification: Efficient modelling of higher-order correlations in the weak lensing and thermal Sunyaev-Zeldovich fields
Dhayaa Anbajagane, Shivam Pandey, Chihway Chang
Semi-analytic methods can generate baryon-corrected fields from N-body simulations (``baryonification'') and are rapidly becoming a ubiquitous tool in modeling structure formation…
Deciphering baryonic feedback with galaxy clusters
Chun-Hao To, Shivam Pandey, Elisabeth Krause +3
Upcoming cosmic shear analyses will precisely measure the cosmic matter distribution at low redshifts. At these redshifts, the matter distribution is affected by galaxy formation p…
GODMAX: Modeling gas thermodynamics and matter distribution using JAX
Shivam Pandey, Jaime Salcido, Chun-Hao To +4
We introduce GODMAX (Gas thermODynamics and Matter distribution using jAX), a novel code designed to calculate correlations between the cosmological matter distribution and various…
Merger Response of Halo Anisotropy Properties
Kuan Wang, Philip Mansfield, Dhayaa Anbajagane +1
Anisotropy properties -- halo spin, shape, position offset, velocity offset, and orientation -- are an important family of dark matter halo properties that indicate the level of di…
Primordial non-Gaussianities with weak lensing: Information on non-linear scales in the Ulagam full-sky simulations
Dhayaa Anbajagane, Chihway Chang, Hayden Lee +1
Primordial non-Gaussianities (PNGs) are signatures in the density field that encode particle physics processes from the inflationary epoch. Such signatures have been extensively st…
Baryonic Imprints on DM Halos: The concentration-mass relation in the CAMELS simulations
Mufan Shao, Dhayaa Anbajagane, Chihway Chang
The physics of baryons in halos, and their subsequent influence on the total matter phase space, has a rich phenomenology and must be well understood in order to pursue a vast set…
A multi-simulation study of relativistic SZ temperature scalings in galaxy clusters and groups
Elizabeth Lee, Dhayaa Anbajagane, Priyanka Singh +6
The Sunyaev-Zeldovich (SZ) effect is a powerful tool in modern cosmology. With future observations promising ever improving SZ measurements, the relativistic corrections to the SZ…
Correlations of Dark Matter, Gas and Stellar Profiles in Dark Matter Halos
Arya Farahi, Daisuke Nagai, Dhayaa Anbajagane
Halos of similar mass and redshift exhibit a large degree of variability in their differential properties, such as dark matter, hot gas, and stellar mass density profiles. This var…
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…
Galaxy Velocity Bias in Cosmological Simulations: Towards Percent-level Calibration
Dhayaa Anbajagane, Han Aung, August E. Evrard +8
Galaxy cluster masses, rich with cosmological information, can be estimated from internal dark matter (DM) velocity dispersions, which in turn can be observationally inferred from…
Baryonic Imprints on DM Halos: Population Statistics from Dwarf Galaxies to Galaxy Clusters
Dhayaa Anbajagane, August E. Evrard, Arya Farahi
In a purely cold dark matter universe, the initial matter power spectrum and its subsequent gravitational growth contain no special mass- or time-scales, and so neither do the emer…
A Test of the Standard Cosmological Model with Geometry and Growth
Uendert Andrade, Dhayaa Anbajagane, Rodrigo von Marttens +2
We perform a general test of the and cosmological models by comparing constraints on the geometry of the expansion history to those on the growth of stru…