Search Results - "Vegetti, S."

Constraining sterile neutrino cosmologies with strong gravitational lensing observations at redshift z ∼ 0.2 by Vegetti, S, Despali, G, Lovell, M R, Enzi, W

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A dynamically cold disk galaxy in the early Universe by Rizzo, F., Vegetti, S., Powell, D., Fraternali, F., McKean, J. P., Stacey, H. R., White, S. D. M.

“…The extreme astrophysical processes and conditions that characterize the early Universe are expected to result in young galaxies that are dynamically different…”
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SHARP – VII. New constraints on the dark matter free-streaming properties and substructure abundance from gravitationally lensed quasars by Hsueh, J-W, Enzi, W, Vegetti, S, Auger, M W, Fassnacht, C D, Despali, G, Koopmans, L V E, McKean, J P

“…ABSTRACT We present an analysis of seven strongly gravitationally lensed quasars and the corresponding constraints on the properties of dark matter. Our…”
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Inference of the cold dark matter substructure mass function at z = 0.2 using strong gravitational lenses by Vegetti, S., Koopmans, L. V. E., Auger, M. W., Treu, T., Bolton, A. S.

“…We present the results of a search for galaxy substructures in a sample of 11 gravitational lens galaxies from the Sloan Lens ACS Survey by Bolton et al. We…”
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Detection of a dark substructure through gravitational imaging by Vegetti, S., Koopmans, L. V. E., Bolton, A., Treu, T., Gavazzi, R.

“…We report the detection of a dark substructure – undetected in the Hubble Space Telescope HST ACS F814W image – in the gravitational lens galaxy SDSSJ0946+1006…”
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Low-mass halo perturbations in strong gravitational lenses at redshift z ∼ 0.5 are consistent with CDM by Ritondale, E, Vegetti, S, Despali, G, Auger, M W, Koopmans, L V E, McKean, J P

“…ABSTRACT We use a sample of 17 strong gravitational lens systems from the BELLS GALLERY survey to quantify the amount of low-mass dark matter haloes within the…”
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Full of Orions: a 200-pc mapping of the interstellar medium in the redshift-3 lensed dusty star-forming galaxy SDP.81 by Rybak, Matus, Hodge, J A, Vegetti, S, van der Werf, P, Andreani, P, Graziani, L, McKean, J P

“…ABSTRACT We present a sub-kpc resolved study of the interstellar medium properties in SDP.81, a $z$ = 3.042 strongly gravitationally lensed, dusty star-forming…”
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Resolving on 100 pc scales the UV-continuum in Lyman-α emitters between redshift 2 and 3 with gravitational lensing by Ritondale, E, Auger, M W, Vegetti, S, McKean, J P

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Gravitational detection of a low-mass dark satellite galaxy at cosmological distance by Vegetti, S., Lagattuta, D. J., McKean, J. P., Auger, M. W., Fassnacht, C. D., Koopmans, L. V. E.

“…The discovery of a distant, low-mass satellite galaxy helps to constrain the mass function for substructure beyond the local Universe to a form that agrees at…”
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Selection functions of strong lens finding neural networks by Herle, A, O’Riordan, C M, Vegetti, S

“…ABSTRACT We show that convolution neural networks (CNNs) trained to find strong gravitational lens systems are biased towards systems with larger Einstein…”
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Bayesian strong gravitational-lens modelling on adaptive grids: objective detection of mass substructure in Galaxies by Vegetti, S., Koopmans, L. V. E.

“…We introduce a new adaptive and fully Bayesian grid-based method to model strong gravitational lenses with extended images. The primary goal of this method is…”
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The Structure and Dynamics of Massive Early-Type Galaxies: On Homology, Isothermality, and Isotropy Inside One Effective Radius by Koopmans, L. V. E, Bolton, A, Treu, T, Czoske, O, Auger, M. W, Barnabè, M, Vegetti, S, Gavazzi, R, Moustakas, L. A, Burles, S

“…Based on 58 SLACS strong-lens early-type galaxies (ETGs) with direct total-mass and stellar-velocity dispersion measurements, we find that inside one effective…”
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ALMA imaging of SDP.81 – II. A pixelated reconstruction of the CO emission lines by Rybak, M., Vegetti, S., McKean, J. P., Andreani, P., White, S. D. M.

“…We present a sub-100 pc-scale analysis of the CO molecular gas emission and kinematics of the gravitational lens system SDP.81 at redshift 3.042 using Atacama…”
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Probing sub-galactic mass structure with the power spectrum of surface-brightness anomalies in high-resolution observations of galaxy-galaxy strong gravitational lenses – I. Power-spectrum measurement and feasibility study by Bayer, D, Koopmans, L V E, McKean, J P, Vegetti, S, Treu, T, Fassnacht, C D, Glazebrook, K

“…ABSTRACT While the direct detection of the dark-matter particle remains very challenging, the nature of dark matter could be possibly constrained by comparing…”
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SHARP – V. Modelling gravitationally lensed radio arcs imaged with global VLBI observations by Spingola, C, McKean, J P, Auger, M W, Fassnacht, C D, Koopmans, L V E, Lagattuta, D J, Vegetti, S

“…ABSTRACT We present milliarcsecond (mas) angular resolution observations of the gravitationally lensed radio source MG J0751+2716 (at z= 3.2) obtained with…”
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ALMA imaging of SDP.81 – I. A pixelated reconstruction of the far-infrared continuum emission by Rybak, M., McKean, J. P., Vegetti, S., Andreani, P., White, S. D. M.

“…We present a sub-50 parsec scale analysis of the gravitational lens system SDP.81 at redshift 3.042 using Atacama Large Millimetre/submillimetre Array science…”
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PS J1721+8842: a gravitationally lensed dual AGN system at redshift 2.37 with two radio components by Mangat, C S, McKean, J P, Brilenkov, R, Hartley, P, Stacey, H R, Vegetti, S, Wen, D

“…ABSTRACT Dual-Active Galactic Nuclei (AGN) are a natural consequence of the hierarchical structure formation scenario, and can provide an important test of…”
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SHARP – VI. Evidence for CO (1–0) molecular gas extended on kpc-scales in AGN star-forming galaxies at high redshift by Spingola, C, McKean, J P, Vegetti, S, Powell, D, Auger, M W, Koopmans, L V E, Fassnacht, C D, Lagattuta, D J, Rizzo, F, Stacey, H R, Sweijen, F

“…ABSTRACT We present a study of the stellar host galaxy, CO (1–0) molecular gas distribution and AGN emission on 50–500 pc-scales of the gravitationally lensed…”
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Time delay lens modelling challenge by Ding, X, Treu, T, Birrer, S, Chen, G C-F, Coles, J, Denzel, P, Frigo, M, Galan, A, Marshall, P J, Millon, M, More, A, Shajib, A J, Sluse, D, Tak, H, Xu, D, Auger, M W, Bonvin, V, Chand, H, Courbin, F, Despali, G, Fassnacht, C D, Gilman, D, Hilbert, S, Kumar, S R, Lin, J Y-Y, Park, J W, Saha, P, Vegetti, S, Van de Vyvere, L, Williams, L L R

“…ABSTRACT In recent years, breakthroughs in methods and data have enabled gravitational time delays to emerge as a very powerful tool to measure the Hubble…”
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Probing sub-galactic mass structure with the power spectrum of surface-brightness anomalies in high-resolution observations of galaxy–galaxy strong gravitational lenses. II. Observational constraints on the subgalactic matter power spectrum by Bayer, D, Chatterjee, S, Koopmans, L V E, Vegetti, S, McKean, J P, Treu, T, Fassnacht, C D, Glazebrook, K

“…ABSTRACT Stringent observational constraints on the subgalactic matter power spectrum would allow one to distinguish between the concordance ΛCDM and the…”
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