All Outputs (52)

Gravitational-wave event rates as a new probe for dark matter microphysics (2023)
Journal Article
Mosbech, M. R., Jenkins, A. C., Bose, S., Boehm, C., Sakellariadou, M., & Wong, Y. Y. (2023). Gravitational-wave event rates as a new probe for dark matter microphysics. Physical Review D, 108(4), Article 043512. https://doi.org/10.1103/physrevd.108.043512

We show that gravitational waves have the potential to unravel the microphysical properties of dark matter due to the dependence of the binary black hole merger rate on cosmic structure formation, which is itself highly dependent on the dark matter s... Read More about Gravitational-wave event rates as a new probe for dark matter microphysics.

The MillenniumTNG Project: the impact of baryons and massive neutrinos on high-resolution weak gravitational lensing convergence maps (2023)
Journal Article
Ferlito, F., Springel, V., Davies, C. T., Hernández-Aguayo, C., Pakmor, R., Barrera, M., White, S. D. M., Delgado, A. M., Hadzhiyska, B., Hernquist, L., Kannan, R., Bose, S., & Frenk, C. (2023). The MillenniumTNG Project: the impact of baryons and massive neutrinos on high-resolution weak gravitational lensing convergence maps. Monthly Notices of the Royal Astronomical Society, 524(4), 5591-5606. https://doi.org/10.1093/mnras/stad2205

We study weak gravitational lensing convergence maps produced from the MILLENNIUM TNG simulations by direct projection of the mass distribution on the past backwards lightcone of a fiducial observer. We explore the lensing maps over a large dynamic r... Read More about The MillenniumTNG Project: the impact of baryons and massive neutrinos on high-resolution weak gravitational lensing convergence maps.

The MillenniumTNG Project: refining the one-halo model of red and blue galaxies at different redshifts (2023)
Journal Article
Hadzhiyska, B., Hernquist, L., Eisenstein, D., Delgado, A. M., Bose, S., Kannan, R., …Frenk, C. (2023). The MillenniumTNG Project: refining the one-halo model of red and blue galaxies at different redshifts. Monthly Notices of the Royal Astronomical Society, 524(2), 2524–2538. https://doi.org/10.1093/mnras/stad279

Luminous red galaxies (LRGs) and blue star-forming emission-line galaxies (ELGs) are key tracers of large-scale structure used by cosmological surveys. Theoretical predictions for such data are often done via simplistic models for the galaxy–halo con... Read More about The MillenniumTNG Project: refining the one-halo model of red and blue galaxies at different redshifts.

The MillenniumTNG Project: the large-scale clustering of galaxies (2023)
Journal Article
Bose, S., Hadzhiyska, B., Barrera, M., Delgado, A. M., Ferlito, F., Frenk, C., Hernández-Aguayo, C., Hernquist, L., Kannan, R., Pakmor, R., Springel, V., & White, S. D. M. (2023). The MillenniumTNG Project: the large-scale clustering of galaxies. Monthly Notices of the Royal Astronomical Society, 524(2), 2579-2593. https://doi.org/10.1093/mnras/stad1097

Modern redshift surveys are tasked with mapping out the galaxy distribution over enormous distance scales. Existing hydrodynamical simulations, however, do not reach the volumes needed to match upcoming surveys. We present results for the clustering... Read More about The MillenniumTNG Project: the large-scale clustering of galaxies.

The MillenniumTNG Project: the hydrodynamical full physics simulation and a first look at its galaxy clusters (2023)
Journal Article
Pakmor, R., Springel, V., Coles, J. P., Guillet, T., Pfrommer, C., Bose, S., Barrera, M., Delgado, A. M., Ferlito, F., Frenk, C., Hadzhiyska, B., Hernández-Aguayo, C., Hernquist, L., Kannan, R., & White, S. D. M. (2023). The MillenniumTNG Project: the hydrodynamical full physics simulation and a first look at its galaxy clusters. Monthly Notices of the Royal Astronomical Society, 524(2), 2539-2555. https://doi.org/10.1093/mnras/stac3620

Cosmologicalsimulations are an important theoretical pillar for understanding non-linearstructure formation in our Universe and for relating it to observations on large scales. In several papers, we introduce our MillenniumTNG (MTNG) project that pro... Read More about The MillenniumTNG Project: the hydrodynamical full physics simulation and a first look at its galaxy clusters.

The MillenniumTNG Project: inferring cosmology from galaxy clustering with accelerated N-body scaling and subhalo abundance matching (2023)
Journal Article
Contreras, S., Angulo, R. E., Springel, V., White, S. D. M., Hadzhiyska, B., Hernquist, L., Pakmor, R., Kannan, R., Hernández-Aguayo, C., Barrera, M., Ferlito, F., Delgado, A. M., Bose, S., & Frenk, C. (2023). The MillenniumTNG Project: inferring cosmology from galaxy clustering with accelerated N-body scaling and subhalo abundance matching. Monthly Notices of the Royal Astronomical Society, 524(2), 2489-2506. https://doi.org/10.1093/mnras/stac3699

We introduce a novel technique for constraining cosmological parameters and galaxy assembly bias using non-linear redshift-space clustering of galaxies. We scale cosmological N-body simulations and insert galaxies with the SubHalo Abundance Matching... Read More about The MillenniumTNG Project: inferring cosmology from galaxy clustering with accelerated N-body scaling and subhalo abundance matching.

The MillenniumTNG project: the galaxy population at z ≥ 8 (2023)
Journal Article
Kannan, R., Springel, V., Hernquist, L., Pakmor, R., Delgado, A. M., Hadzhiyska, B., Hernández-Aguayo, C., Barrera, M., Ferlito, F., Bose, S., White, S. D. M., Frenk, C., Smith, A., & Garaldi, E. (2023). The MillenniumTNG project: the galaxy population at z ≥ 8. Monthly Notices of the Royal Astronomical Society, 524(2), 2594-2605. https://doi.org/10.1093/mnras/stac3743

The early release science results from JWST have yielded an unexpected abundance of high-redshift luminous galaxies that seems to be in tension with current theories of galaxy formation. However, it is currently difficult to draw definitive conclusio... Read More about The MillenniumTNG project: the galaxy population at z ≥ 8.

The MillenniumTNG Project: an improved two-halo model for the galaxy–halo connection of red and blue galaxies (2023)
Journal Article
Hadzhiyska, B., Eisenstein, D., Hernquist, L., Pakmor, R., Bose, S., Delgado, A. M., …Barrera, M. (2023). The MillenniumTNG Project: an improved two-halo model for the galaxy–halo connection of red and blue galaxies. Monthly Notices of the Royal Astronomical Society, 524(2), 2507–2523. https://doi.org/10.1093/mnras/stad731

Approximate methods to populate dark-matter haloes with galaxies are of great utility to galaxy surveys. However, the limitations of simple halo occupation models (HODs) preclude a full use of small-scale galaxy clustering data and call for more soph... Read More about The MillenniumTNG Project: an improved two-halo model for the galaxy–halo connection of red and blue galaxies.

The MillenniumTNG Project: high-precision predictions for matter clustering and halo statistics (2023)
Journal Article
Hernández-Aguayo, C., Springel, V., Pakmor, R., Barrera, M., Ferlito, F., White, S. D. M., Hernquist, L., Hadzhiyska, B., Delgado, A. M., Kannan, R., Bose, S., & Frenk, C. (2023). The MillenniumTNG Project: high-precision predictions for matter clustering and halo statistics. Monthly Notices of the Royal Astronomical Society, 524(2), 2556-2578. https://doi.org/10.1093/mnras/stad1657

The MillenniumTNG Project: Intrinsic alignments of galaxies and halos (2023)
Journal Article
Delgado, A. M., Hadzhiyska, B., Bose, S., Springel, V., Hernquist, L., Barrera, M., Pakmor, R., Ferlito, F., Kannan, R., Hernández-Aguayo, C., White, S. D., & Frenk, C. (2023). The MillenniumTNG Project: Intrinsic alignments of galaxies and halos. Monthly Notices of the Royal Astronomical Society, 523(4), 5899–5914. https://doi.org/10.1093/mnras/stad1781

The intrinsic alignment (IA) of observed galaxy shapes with the underlying cosmic web is a source of contamination in weak lensing surveys. Sensitive methods to identify the IA signal will therefore need to be included in the upcoming weak lensing an... Read More about The MillenniumTNG Project: Intrinsic alignments of galaxies and halos.

The progenitor galaxies of stellar haloes as ‘failed’ Milky Ways (2023)
Journal Article
Bose, S., & Deason, A. J. (2023). The progenitor galaxies of stellar haloes as ‘failed’ Milky Ways. Monthly Notices of the Royal Astronomical Society, 522(4), 5013-5021. https://doi.org/10.1093/mnras/stad1123

The stellar halo of the Milky Way records the history of its interactions with dwarf galaxies, whose subsequent destruction results in the formation of an extended stellar component. Recent works have suggested that galaxies with masses comparable to... Read More about The progenitor galaxies of stellar haloes as ‘failed’ Milky Ways.

Galaxy clustering from the bottom up: A Streaming Model emulator I (2023)
Journal Article
Cuesta-Lazaro, C., Nishimichi, T., Kobayashi, Y., Ruan, C.-Z., Eggemeier, A., Miyatake, H., Takada, M., Yoshida, N., Zarrouk, P., Baugh, C. M., Bose, S., & Li, B. (2023). Galaxy clustering from the bottom up: A Streaming Model emulator I. Monthly Notices of the Royal Astronomical Society, 523(3), 3219–3238. https://doi.org/10.1093/mnras/stad1207

In this series of papers, we present a simulation-based model for the non-linear clustering of galaxies based on separate modelling of clustering in real space and velocity statistics. In the first paper, we present an emulator for the real-space cor... Read More about Galaxy clustering from the bottom up: A Streaming Model emulator I.

Cosmological structure formation and soliton phase transition in fuzzy dark matter with axion self-interactions (2023)
Journal Article
Mocz, P., Fialkov, A., Vogelsberger, M., Boylan-Kolchin, M., Chavanis, P.-H., Amin, M. A., Bose, S., Dome, T., Hernquist, L., Lancaster, L., Notis, M., Painter, C., Robles, V. H., & Zavala, J. (2023). Cosmological structure formation and soliton phase transition in fuzzy dark matter with axion self-interactions. Monthly Notices of the Royal Astronomical Society, 521(2), 2608-2615. https://doi.org/10.1093/mnras/stad694

We investigate cosmological structure formation in fuzzy dark matter (FDM) with the attractive self-interaction (SI) with numerical simulations. Such a SI would arise if the FDM boson were an ultra-light axion, which has a strong CP symmetry-breaking... Read More about Cosmological structure formation and soliton phase transition in fuzzy dark matter with axion self-interactions.

The feasibility of constraining DM interactions with high-redshift observations by JWST (2022)
Journal Article
Kurmus, A., Bose, S., Lovell, M., Cyr-Racine, F.-Y., Vogelsberger, M., Pfrommer, C., & Zavala, J. (2022). The feasibility of constraining DM interactions with high-redshift observations by JWST. Monthly Notices of the Royal Astronomical Society, 516(1), 1524-1538. https://doi.org/10.1093/mnras/stac2195

Observations of the high redshift universe provide a promising avenue for constraining the nature of the dark matter (DM). This will be even more true with the advent of the James Webb Space Telescope (JWST). We run cosmological simulations of galaxy... Read More about The feasibility of constraining DM interactions with high-redshift observations by JWST.

Modelling the galaxy–halo connection with machine learning (2022)
Journal Article
Delgado, A. M., Wadekar, D., Hadzhiyska, B., Bose, S., Hernquist, L., & Ho, S. (2022). Modelling the galaxy–halo connection with machine learning. Monthly Notices of the Royal Astronomical Society, 515(2), 2733-2746. https://doi.org/10.1093/mnras/stac1951

To extract information from the clustering of galaxies on non-linear scales, we need to model the connection between galaxies and haloes accurately and in a flexible manner. Standard halo occupation distribution (HOD) models make the assumption that... Read More about Modelling the galaxy–halo connection with machine learning.

Illustrating galaxy–halo connection in the DESI era with illustrisTNG (2022)
Journal Article
Yuan, S., Hadzhiyska, B., Bose, S., & Eisenstein, D. J. (2022). Illustrating galaxy–halo connection in the DESI era with illustrisTNG. Monthly Notices of the Royal Astronomical Society, 512(4), 5793-5811. https://doi.org/10.1093/mnras/stac830

We employ the hydrodynamical simulation ILLUSTRISTNG to inform the galaxy–halo connection of the Luminous Red Galaxy (LRG) and Emission Line Galaxy (ELG) samples of the Dark Energy Spectroscopic Instrument (DESI) survey at redshift z ∼ 0.8. Specifica... Read More about Illustrating galaxy–halo connection in the DESI era with illustrisTNG.

Constructing high-fidelity halo merger trees in abacussummit (2022)
Journal Article
Bose, S., Eisenstein, D. J., Hadzhiyska, B., Garrison, L. H., & Yuan, S. (2022). Constructing high-fidelity halo merger trees in abacussummit. Monthly Notices of the Royal Astronomical Society, 512(1), 837-854. https://doi.org/10.1093/mnras/stac555

Tracking the formation and evolution of dark matter haloes is a critical aspect of any analysis of cosmological N-body simulations. In particular, the mass assembly of a halo and its progenitors, encapsulated in the form of its merger tree, serves as... Read More about Constructing high-fidelity halo merger trees in abacussummit.

Dynamics of intermediate-mass black holes wandering in the milky way galaxy using the illustris TNG50 simulation (2022)
Journal Article
Weller, E. J., Pacucci, F., Hernquist, L., & Bose, S. (2022). Dynamics of intermediate-mass black holes wandering in the milky way galaxy using the illustris TNG50 simulation. Monthly Notices of the Royal Astronomical Society, 511(2), 2229-2238. https://doi.org/10.1093/mnras/stac179

The detection of Intermediate-Mass Black Holes (IMBHs) in dwarf galaxies is crucial to closing the gap in the wide mass distribution of black holes (⁠∼3M⊙ to ∼5×1010M⊙⁠). IMBHs originally located at the centre of dwarfs that later collide with the Mi... Read More about Dynamics of intermediate-mass black holes wandering in the milky way galaxy using the illustris TNG50 simulation.

Dwarf stellar haloes: a powerful probe of small-scale galaxy formation and the nature of dark matter (2021)
Journal Article
Deason, A. J., Bose, S., Fattahi, A., Amorisco, N. C., Hellwing, W., & Frenk, C. S. (2022). Dwarf stellar haloes: a powerful probe of small-scale galaxy formation and the nature of dark matter. Monthly Notices of the Royal Astronomical Society, 511(3), 4044-4059. https://doi.org/10.1093/mnras/stab3524

We use N-body cosmological simulations and empirical galaxy models to study the merger history of dwarf-mass galaxies (with Mhalo∼1010M⊙⁠). Our input galaxy models describe the stellar mass–halo mass relation, and the galaxy occupation fraction. The... Read More about Dwarf stellar haloes: a powerful probe of small-scale galaxy formation and the nature of dark matter.

AbacusHOD: a highly efficient extended multitracer HOD framework and its application to BOSS and eBOSS data (2021)
Journal Article
Yuan, S., Garrison, L. H., Hadzhiyska, B., Bose, S., & Eisenstein, D. J. (2022). AbacusHOD: a highly efficient extended multitracer HOD framework and its application to BOSS and eBOSS data. Monthly Notices of the Royal Astronomical Society, 510(3), 3301-3320. https://doi.org/10.1093/mnras/stab3355

We introduce the ABACUSHOD model and present two applications of ABACUSHOD and the ABACUSSUMMIT simulations to observations. ABACUSHOD is a Halo Occupation Distribution (HOD) framework written in PYTHON that is particle-based, multitracer, highly gen... Read More about AbacusHOD: a highly efficient extended multitracer HOD framework and its application to BOSS and eBOSS data.