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The impact of the Large Magellanic Cloud on dark matter direct detection signals (2023)
Journal Article
Smith-Orlik, A., Ronaghi, N., Bozorgnia, N., Cautun, M., Fattahi, A., Besla, G., …Peter, A. H. (2023). The impact of the Large Magellanic Cloud on dark matter direct detection signals. Journal of Cosmology and Astroparticle Physics, 2023(10), Article 070. https://doi.org/10.1088/1475-7516/2023/10/070

We study the effect of the Large Magellanic Cloud (LMC) on the dark matter (DM) distribution in the Solar neighborhood, utilizing the Auriga magneto-hydrodynamical simulations of Milky Way (MW) analogues that have an LMC-like system. We extract the l... Read More about The impact of the Large Magellanic Cloud on dark matter direct detection signals.

Cosmic Ballet III: Halo spin evolution in the cosmic web (2021)
Journal Article
Ganeshaiah Veena, P., Cautun, M., van de Weygaert, R., Tempel, E., & Frenk, C. S. (2021). Cosmic Ballet III: Halo spin evolution in the cosmic web. Monthly Notices of the Royal Astronomical Society, 503(2), 2280-2299. https://doi.org/10.1093/mnras/stab411

We explore the evolution of halo spins in the cosmic web using a very large sample of dark matter haloes in the Lambda cold dark matter Planck-Millennium N-body simulation. We use the NEXUS+ multiscale formalism to identify the hierarchy of filaments... Read More about Cosmic Ballet III: Halo spin evolution in the cosmic web.

The twisted dark matter halo of the Milky Way (2020)
Journal Article
Shao, S., Cautun, M., Deason, A., & Frenk, C. S. (2021). The twisted dark matter halo of the Milky Way. Monthly Notices of the Royal Astronomical Society, 504(4), 6033-6048. https://doi.org/10.1093/mnras/staa3883

We analyse systems analogous to the Milky Way (MW) in the EAGLE cosmological hydrodynamics simulation in order to deduce the likely structure of the MW’s dark matter (DM) halo. We identify MW mass haloes in the simulation whose satellite galaxies hav... Read More about The twisted dark matter halo of the Milky Way.

The Milky Way total mass profile as inferred from Gaia DR2 (2020)
Journal Article
Cautun, M., Benítez-Llambay, A., Deason, A. J., Frenk, C. S., Fattahi, A., Gómez, F. A., …Simpson, C. M. (2020). The Milky Way total mass profile as inferred from Gaia DR2. Monthly Notices of the Royal Astronomical Society, 494(3), 4291-4313. https://doi.org/10.1093/mnras/staa1017

We determine the Milky Way (MW) mass profile inferred from fitting physically motivated models to the Gaia DR2 Galactic rotation curve and other data. Using various hydrodynamical simulations of MW-mass haloes, we show that the presence of baryons in... Read More about The Milky Way total mass profile as inferred from Gaia DR2.

Evolution of galactic planes of satellites in the eagle simulation (2019)
Journal Article
Shao, S., Cautun, M., & Frenk, C. S. (2019). Evolution of galactic planes of satellites in the eagle simulation. Monthly Notices of the Royal Astronomical Society, 488(1), 1166-1179. https://doi.org/10.1093/mnras/stz1741

We study the formation of planes of dwarf galaxies around Milky Way (MW)-mass haloes in the EAGLE galaxy formation simulation. We focus on satellite systems similar to the one in the MW: spatially thin or with a large fraction of members orbiting in... Read More about Evolution of galactic planes of satellites in the eagle simulation.

The Cosmic Ballet II: spin alignment of galaxies and haloes with large-scale filaments in the EAGLE simulation (2019)
Journal Article
Ganeshaiah Veena, P., Cautun, M., Tempel, E., van de Weygaert, R., & Frenk, C. S. (2019). The Cosmic Ballet II: spin alignment of galaxies and haloes with large-scale filaments in the EAGLE simulation. Monthly Notices of the Royal Astronomical Society, 487(2), 1607-1625. https://doi.org/10.1093/mnras/stz1343

We investigate the alignment of galaxies and haloes relative to cosmic web filaments using the EAGLE hydrodynamical simulation. We identify filaments by applying the nexus+ method to the mass distribution and the Bisous formalism to the galaxy distri... Read More about The Cosmic Ballet II: spin alignment of galaxies and haloes with large-scale filaments in the EAGLE simulation.

The mass of the Milky Way from satellite dynamics (2019)
Journal Article
Callingham, T. M., Cautun, M., Deason, A. J., Frenk, C. S., Wang, W., Gómez, F. A., …Pakmor, R. (2019). The mass of the Milky Way from satellite dynamics. Monthly Notices of the Royal Astronomical Society, 484(4), 5453-5467. https://doi.org/10.1093/mnras/stz365

We present and apply a method to infer the mass of the Milky Way (MW) by comparing the dynamics of MW satellites to those of model satellites in the EAGLE cosmological hydrodynamics simulations. A distribution function (DF) for galactic satellites is... Read More about The mass of the Milky Way from satellite dynamics.

The Santiago-Harvard-Edinburgh-Durham void comparison II: unveiling the Vainshtein screening using weak lensing (2019)
Journal Article
Paillas, E., Cautun, M., Li, B., Cai, Y.-C., Padilla, N., Armijo, J., & Bose, S. (2019). The Santiago-Harvard-Edinburgh-Durham void comparison II: unveiling the Vainshtein screening using weak lensing. Monthly Notices of the Royal Astronomical Society, 484(1), 1149–1165. https://doi.org/10.1093/mnras/stz022

We study cosmic voids in the normal-branch Dvali-Gabadadze-Porrati (nDGP) braneworld models, which are representative of a class of modified gravity theories where deviations from General Relativity are usually hidden by the Vainshtein screening in h... Read More about The Santiago-Harvard-Edinburgh-Durham void comparison II: unveiling the Vainshtein screening using weak lensing.

The aftermath of the Great Collision between our Galaxy and the Large Magellanic Cloud (2018)
Journal Article
Cautun, M., Deason, A. J., Frenk, C. S., & McAlpine, S. (2018). The aftermath of the Great Collision between our Galaxy and the Large Magellanic Cloud. Monthly Notices of the Royal Astronomical Society, 483(2), 2185-2196. https://doi.org/10.1093/mnras/sty3084

The Milky Way (MW) offers a uniquely detailed view of galactic structure and is often regarded as a prototypical spiral galaxy. But recent observations indicate that the MW is atypical: it has an undersized supermassive black hole at its centre; it i... Read More about The aftermath of the Great Collision between our Galaxy and the Large Magellanic Cloud.

Aurigaia: mock Gaia DR2 stellar catalogues from the Auriga cosmological simulations (2018)
Journal Article
Grand, R., Helly, J., Fattahi, A., Cautun, M., Cole, S., Cooper, A., …Xu, D. (2018). Aurigaia: mock Gaia DR2 stellar catalogues from the Auriga cosmological simulations. Monthly Notices of the Royal Astronomical Society, 481(2), 1726-1743. https://doi.org/10.1093/mnras/sty2403

We present and analyse mock stellar catalogues that match the selection criteria and observables (including uncertainties) of the Gaia satellite data release 2 (DR2). The source are six cosmological high-resolution magneto-hydrodynamic ΛCDM zoom simu... Read More about Aurigaia: mock Gaia DR2 stellar catalogues from the Auriga cosmological simulations.

The Cosmic Ballet: spin and shape alignments of haloes in the cosmic web (2018)
Journal Article
Ganeshaiah Veena, P., Cautun, M., van de Weygaert, R., Tempel, E., Jones, B., Rieder, S., & Frenk, C. (2018). The Cosmic Ballet: spin and shape alignments of haloes in the cosmic web. Monthly Notices of the Royal Astronomical Society, 481(1), 414-438. https://doi.org/10.1093/mnras/sty2270

We investigate the alignment of haloes with the filaments of the cosmic web using an unprecedently large sample of dark matter haloes taken from the P-Millennium Lambda cold dark matter cosmological N-body simulation. We use the state-of-the-art NEXU... Read More about The Cosmic Ballet: spin and shape alignments of haloes in the cosmic web.

Weak lensing by voids in weak lensing maps (2018)
Journal Article
Davies, C. T., Cautun, M., & Li, B. (2018). Weak lensing by voids in weak lensing maps. Monthly Notices of the Royal Astronomical Society: Letters, 480(1), L101-L105. https://doi.org/10.1093/mnrasl/sly135

Cosmic voids are an important probe of large-scale structure that can constrain cosmological parameters and test cosmological models. We present a new paradigm for void studies: void detection in weak lensing convergence maps. This approach identifie... Read More about Weak lensing by voids in weak lensing maps.

Evolution of LMC/M33-mass dwarf galaxies in the EAGLE simulation (2018)
Journal Article
Shao, S., Cautun, M., Deason, A., Frenk, C., & Theuns, T. (2018). Evolution of LMC/M33-mass dwarf galaxies in the EAGLE simulation. Monthly Notices of the Royal Astronomical Society, 479(1), 284-296. https://doi.org/10.1093/mnras/sty1470

We investigate the population of dwarf galaxies with stellar masses similar to the Large Magellanic Cloud (LMC) and M33 in the EAGLE galaxy formation simulation. In the field, galaxies reside in haloes with stellar-to-halo mass ratios of 1.03+0.50−0.... Read More about Evolution of LMC/M33-mass dwarf galaxies in the EAGLE simulation.

The total satellite population of the Milky Way (2018)
Journal Article
Newton, O., Cautun, M., Jenkins, A., Frenk, C. S., & Helly, J. C. (2018). The total satellite population of the Milky Way. Monthly Notices of the Royal Astronomical Society, 479(3), 2853-2870. https://doi.org/10.1093/mnras/sty1085

The total number and luminosity function of the population of dwarf galaxies of the Milky Way (MW) provide important constraints on the nature of the dark matter and on the astrophysics of galaxy formation at low masses. However, only a partial censu... Read More about The total satellite population of the Milky Way.

Reconstructing the baryon acoustic oscillations using biased tracers (2018)
Journal Article
Birkin, J., Li, B., Cautun, M., & Shi, Y. (2018). Reconstructing the baryon acoustic oscillations using biased tracers. Monthly Notices of the Royal Astronomical Society, 483(4), 5267-5280. https://doi.org/10.1093/mnras/sty3365

The reconstruction of the initial conditions of the Universe is an important topic in cosmology, particularly in the context of sharpening the measurement of the baryon acoustic oscillation (BAO) peak. Nonlinear reconstruction algorithms developed in... Read More about Reconstructing the baryon acoustic oscillations using biased tracers.

The Santiago-Harvard-Edinburgh-Durham void comparison I: SHEDding light on chameleon gravity tests (2018)
Journal Article
Cautun, M., Paillas, E., Cai, Y., Bose, S., Armijo, J., Li, B., & Padilla, N. (2018). The Santiago-Harvard-Edinburgh-Durham void comparison I: SHEDding light on chameleon gravity tests. Monthly Notices of the Royal Astronomical Society, 476(3), 3195-3217. https://doi.org/10.1093/mnras/sty463

We present a systematic comparison of several existing and new void finding algorithms, focusing on their potential power to test a particular class of modified gravity models – chameleon f(R) gravity. These models deviate from standard General Relat... Read More about The Santiago-Harvard-Edinburgh-Durham void comparison I: SHEDding light on chameleon gravity tests.

The multiplicity and anisotropy of galactic satellite accretion (2018)
Journal Article
Shao, S., Cautun, M., Frenk, C. S., Grand, R. J., Gómez, F. A., Marinacci, F., & Simpson, C. M. (2018). The multiplicity and anisotropy of galactic satellite accretion. Monthly Notices of the Royal Astronomical Society, 476(2), 1796-1810. https://doi.org/10.1093/mnras/sty343

We study the incidence of group and filamentary dwarf galaxy accretion into Milky Way (MW) mass haloes using two types of hydrodynamical simulations: EAGLE, which resolves a large cosmological volume, and the AURIGA suite, which are very high resolut... Read More about The multiplicity and anisotropy of galactic satellite accretion.

New method for initial density reconstruction (2018)
Journal Article
Shi, Y., Cautun, M., & Li, B. (2018). New method for initial density reconstruction. Physical Review D, 97(2), Article 023505. https://doi.org/10.1103/physrevd.97.023505

A theoretically interesting and practically important question in cosmology is the reconstruction of the initial density distribution provided a late-time density field. This is a long-standing question with a revived interest recently, especially in... Read More about New method for initial density reconstruction.

Using Voids to Unscreen Modified Gravity (2017)
Journal Article
Falck, B., Koyama, K., Zhao, G., & Cautun, M. (2018). Using Voids to Unscreen Modified Gravity. Monthly Notices of the Royal Astronomical Society, 475(3), 3262-3272. https://doi.org/10.1093/mnras/stx3288

The Vainshtein mechanism, present in many models of gravity, is very effective at screening dark matter halos such that the fifth force is negligible and general relativity is recovered within their Vainshtein radii. Vainshtein screening is independe... Read More about Using Voids to Unscreen Modified Gravity.

Tracing the cosmic web (2017)
Journal Article
Libeskind, N. I., van de Weygaert, R., Cautun, M., Falck, B., Tempel, E., Abel, T., …Yepes, G. (2017). Tracing the cosmic web. Monthly Notices of the Royal Astronomical Society, 473(1), 1195-1217. https://doi.org/10.1093/mnras/stx1976

The cosmic web is one of the most striking features of the distribution of galaxies and dark matter on the largest scales in the Universe. It is composed of dense regions packed full of galaxies, long filamentary bridges, flattened sheets and vast lo... Read More about Tracing the cosmic web.