Dr Sownak Bose's Outputs (53)

Improved halo model calibrations for mixed dark matter models of ultralight axions (2025)
Journal Article
Dome, T., May, S., Laguë, A., Marsh, D. J., Johnston, S., Bose, S., Tocher, A., & Fialkov, A. (2025). Improved halo model calibrations for mixed dark matter models of ultralight axions. Monthly Notices of the Royal Astronomical Society, 537(1), 252-271. https://doi.org/10.1093/mnras/staf005

We study the implications of relaxing the requirement for ultralight axions to account for all dark matter in the Universe by examining mixed dark matter (MDM) cosmologies with axion fractions f ≤ 0.3 within the fuzzy dark matter window 10−25 eV ≤ m... Read More about Improved halo model calibrations for mixed dark matter models of ultralight axions.

Emulation of f(R) modified gravity from ΛCDM using conditional GANs (2024)
Journal Article
Gondhalekar, Y., Bose, S., Li, B., & Cuesta-Lazaro, C. (2025). Emulation of f(R) modified gravity from ΛCDM using conditional GANs. Monthly Notices of the Royal Astronomical Society, 536(2), 1408-1427. https://doi.org/10.1093/mnras/stae2687

A comparison of pre-existing ΛCDM predictions with the abundance of JWST galaxies at high redshift (2024)
Journal Article
Lu, S., Frenk, C. S., Bose, S., Lacey, C. G., Cole, S., Baugh, C. M., & Helly, J. C. (2024). A comparison of pre-existing ΛCDM predictions with the abundance of JWST galaxies at high redshift. Monthly Notices of the Royal Astronomical Society, 536(1), 1018-1034. https://doi.org/10.1093/mnras/stae2646

The impact of baryons on the internal structure of dark matter haloes from dwarf galaxies to superclusters in the redshift range 0 < z < 7 (2024)
Journal Article
Sorini, D., Bose, S., Pakmor, R., Hernquist, L., Springel, V., Hadzhiyska, B., Hernández-Aguayo, C., & Kannan, R. (2025). The impact of baryons on the internal structure of dark matter haloes from dwarf galaxies to superclusters in the redshift range 0 < z < 7. Monthly Notices of the Royal Astronomical Society, 536(1), 728-751. https://doi.org/10.1093/mnras/stae2613

The SRG/eROSITA All-Sky Survey: Constraints on AGN feedback in galaxy groups (2024)
Journal Article
Bahar, Y. E., Bulbul, E., Ghirardini, V., Sanders, J. S., Zhang, X., Liu, A., Clerc, N., Artis, E., Balzer, F., Biffi, V., Bose, S., Comparat, J., Dolag, K., Garrel, C., Hadzhiyska, B., Hernández-Aguayo, C., Hernquist, L., Kluge, M., Krippendorf, S., Merloni, A., …Zelmer, S. (2024). The SRG/eROSITA All-Sky Survey: Constraints on AGN feedback in galaxy groups. Astronomy & Astrophysics, 691, Article A188. https://doi.org/10.1051/0004-6361/202449399

Context. Galaxy groups lying between galaxies and galaxy clusters in the mass spectrum of dark matter halos play a crucial role in the evolution and formation of the large-scale structure. Their shallower potential wells compared to clusters of galax... Read More about The SRG/eROSITA All-Sky Survey: Constraints on AGN feedback in galaxy groups.

Examining Lyman-alpha emitters through simulations in anticipation of the DESI-II survey (2024)
Journal Article
Ravi, J., Hadzhiyska, B., White, M. J., Hernquist, L., & Bose, S. (2024). Examining Lyman-alpha emitters through simulations in anticipation of the DESI-II survey. Physical Review D, 110(10), https://doi.org/10.1103/physrevd.110.103509

Percolation Statistics in the MillenniumTNG Simulations (2024)
Journal Article
Regős, E., Springel, V., Bose, S., Hadzhiyska, B., & Hernández-Aguayo, C. (2024). Percolation Statistics in the MillenniumTNG Simulations. The Astrophysical Journal, 974(1), Article 126. https://doi.org/10.3847/1538-4357/ad7138

The statistical analysis of cosmic large-scale structure is most often based on simple two-point summary statistics, like the power spectrum or the two-point correlation function of a sample of galaxies or other types of tracers. In contrast, topolog... Read More about Percolation Statistics in the MillenniumTNG Simulations.

Quantifying the impact of AGN feedback on the large-scale matter distribution using two- and three-point statistics (2024)
Journal Article
Saha, B., & Bose, S. (2024). Quantifying the impact of AGN feedback on the large-scale matter distribution using two- and three-point statistics. Monthly Notices of the Royal Astronomical Society, 534(4), 3876-3892. https://doi.org/10.1093/mnras/stae2312

Feedback from active galactic nuclei (AGN) plays a critical role in shaping the matter distribution on scales comparable to and larger than individual galaxies. Upcoming surveys such as Euclid and Legacy Survey of Space and Time aim to precisely quan... Read More about Quantifying the impact of AGN feedback on the large-scale matter distribution using two- and three-point statistics.

Galaxy clustering in modified gravity from full-physics simulations – I. Two-point correlation functions (2024)
Journal Article
Collier, M., Bose, S., & Li, B. (2024). Galaxy clustering in modified gravity from full-physics simulations – I. Two-point correlation functions. Monthly Notices of the Royal Astronomical Society, 534(3), 2204-2220. https://doi.org/10.1093/mnras/stae2219

We present an in-depth investigation of galaxy clustering based on a new suite of realistic large-box galaxy formation simulations in f (R) gravity, with a subgrid physics model that has been recalibrated to reproduce various observed stellar and gas... Read More about Galaxy clustering in modified gravity from full-physics simulations – I. Two-point correlation functions.

Ray-tracing versus Born approximation in full-sky weak lensing simulations of the MillenniumTNG project (2024)
Journal Article
Ferlito, F., Davies, C. T., Springel, V., Reinecke, M., Greco, A., Delgado, A. M., White, S. D. M., Hernández-Aguayo, C., Bose, S., & Hernquist, L. (2024). Ray-tracing versus Born approximation in full-sky weak lensing simulations of the MillenniumTNG project. Monthly Notices of the Royal Astronomical Society, 533(3), 3209-3221. https://doi.org/10.1093/mnras/stae2019

The boundary of cosmic filaments (2024)
Journal Article
Wang, W., Wang, P., Guo, H., Kang, X., Libeskind, N. I., Galárraga-Espinosa, D., Springel, V., Kannan, R., Hernquist, L., Pakmor, R., Yu, H.-R., Bose, S., Guo, Q., Yu, L., & Hernández-Aguayo, C. (2024). The boundary of cosmic filaments. Monthly Notices of the Royal Astronomical Society, 532(4), 4604-4615. https://doi.org/10.1093/mnras/stae1801

The influence of baryons on low-mass haloes (2024)
Journal Article
Zheng, H., Bose, S., Frenk, C. S., Gao, L., Jenkins, A., Liao, S., Springel, V., Wang, J., & White, S. D. M. (2024). The influence of baryons on low-mass haloes. Monthly Notices of the Royal Astronomical Society, 532(3), 3151-3165. https://doi.org/10.1093/mnras/stae1666

Evolution of cosmic filaments in the MTNG simulation (2024)
Journal Article
Galárraga-Espinosa, D., Cadiou, C., Gouin, C., White, S. D. M., Springel, V., Pakmor, R., …Hernández-Aguayo, C. (2024). Evolution of cosmic filaments in the MTNG simulation. Astronomy & Astrophysics, 684, Article A63. https://doi.org/10.1051/0004-6361/202347982

We present a study of the evolution of cosmic filaments across redshift with an emphasis on some important properties: filament lengths, growth rates, and radial profiles of galaxy densities. Following an observation-driven approach, we built cosmic... Read More about Evolution of cosmic filaments in the MTNG simulation.

Statistics of thermal gas pressure as a probe of cosmology and galaxy formation (2024)
Journal Article
Chen, Z., Jamieson, D., Komatsu, E., Bose, S., Dolag, K., Hadzhiyska, B., Hernández-Aguayo, C., Hernquist, L., Kannan, R., Pakmor, R., & Springel, V. (2024). Statistics of thermal gas pressure as a probe of cosmology and galaxy formation. Physical Review D, 109(6), Article 063513. https://doi.org/10.1103/physrevd.109.063513

The statistics of thermal gas pressure are a new and promising probe of cosmology and astrophysics. The large-scale cross-correlation between galaxies and the thermal Sunyaev-Zeldovich effect gives the bias-weighted mean electron pressure, ⟨bhPe⟩. In... Read More about Statistics of thermal gas pressure as a probe of cosmology and galaxy formation.

The origin of lopsided satellite galaxy distribution around isolated systems in MillenniumTNG (2024)
Journal Article
Liu, Y., Wang, P., Guo, H., Springel, V., Bose, S., Pakmor, R., & Hernquist, L. (2024). The origin of lopsided satellite galaxy distribution around isolated systems in MillenniumTNG. Monthly Notices of the Royal Astronomical Society, 529(2), 1405-1413. https://doi.org/10.1093/mnras/stae625

Dwarf satellites in galaxy groups are distributed in an anisotropic and asymmetric manner, which is called the ‘lopsided satellite distribution’. This lopsided signal has been observed not only in galaxy pairs but also in isolated systems. However, t... Read More about The origin of lopsided satellite galaxy distribution around isolated systems in MillenniumTNG.

The abundance of dark matter haloes down to Earth mass (2024)
Journal Article
Zheng, H., Bose, S., Frenk, C. S., Gao, L., Jenkins, A., Liao, S., Liu, Y., & Wang, J. (2024). The abundance of dark matter haloes down to Earth mass. Monthly Notices of the Royal Astronomical Society, 528(4), 7300-7309. https://doi.org/10.1093/mnras/stae289

The mass accretion history of dark matter haloes down to Earth mass (2023)
Journal Article
Liu, Y., Gao, L., Bose, S., Frenk, C. S., Jenkins, A., Springel, V., Wang, J., White, S. D. M., & Zheng, H. (2023). The mass accretion history of dark matter haloes down to Earth mass. Monthly Notices of the Royal Astronomical Society, 527(4), 11740-11750. https://doi.org/10.1093/mnras/stae003

We take advantage of the unprecedented dynamical range provided by the ‘Cosmic-Zoom’ project to study the mass accretion history (MAH) of present-day dark matter haloes o v er the entire mass range present in the Lambda cold dark matter paradigm when... Read More about The mass accretion history of dark matter haloes down to Earth mass.

Ghostly Galaxies: Accretion-dominated Stellar Systems in Low-mass Dark Matter Halos (2023)
Journal Article
Wang, C.-W., Cooper, A. P., Bose, S., Frenk, C. S., & Hellwing, W. A. (2023). Ghostly Galaxies: Accretion-dominated Stellar Systems in Low-mass Dark Matter Halos. Astrophysical Journal, 958(2), Article 166. https://doi.org/10.3847/1538-4357/ad011d

Wide-area deep imaging surveys have discovered large numbers of extremely low surface brightness (LSB) dwarf galaxies, which challenge galaxy formation theory and, potentially, offer new constraints on the nature of dark matter. Here we discuss one a... Read More about Ghostly Galaxies: Accretion-dominated Stellar Systems in Low-mass Dark Matter Halos.

An emulator-based halo model in modified gravity – I. The halo concentration–mass relation and density profile (2023)
Journal Article
Ruan, C.-Z., Cuesta-Lazaro, C., Eggemeier, A., Li, B., Baugh, C. M., Arnold, C., Bose, S., Hernández-Aguayo, C., Zarrouk, P., & Davies, C. T. (2024). An emulator-based halo model in modified gravity – I. The halo concentration–mass relation and density profile. Monthly Notices of the Royal Astronomical Society, 527(2), 2490–2507. https://doi.org/10.1093/mnras/stad3021

Interpreting Sunyaev–Zel’dovich observations with MillenniumTNG: mass and environment scaling relations (2023)
Journal Article
Hadzhiyska, B., Ferraro, S., Pakmor, R., Bose, S., Delgado, A. M., Hernández-Aguayo, C., …Hernquist, L. (2023). Interpreting Sunyaev–Zel’dovich observations with MillenniumTNG: mass and environment scaling relations. Monthly Notices of the Royal Astronomical Society, 526(1), 369–382. https://doi.org/10.1093/mnras/stad2751