Concept
Rayon de Schwarzschild
Publications associées (32)
Stellar Metallicities and Gradients in the Isolated, Quenched Low-mass Galaxy Tucana
Nicolas Lawrence Etienne Longeard
We measure the metallicities of 374 red giant branch (RGB) stars in the isolated, quenched dwarf galaxy Tucana using Hubble Space Telescope (HST) narrow-band (F395N) Calcium H & K (CaHK) imaging. Our sample is a factor of similar to 7 similar to 7 larger t ...
Iop Publishing Ltd2024A model for the infrared-radio correlation of main sequence galaxies at gigahertz frequencies and its variation with redshift and stellar mass
Context. The infrared-radio correlation (IRRC) of star-forming galaxies can be used to estimate their star formation rate (SFR) based on the radio continuum luminosity at MHz-GHz frequencies. For its practical application in future deep radio surveys, it i ...
Les Ulis Cedex A2023Uncovering a population of gravitational lens galaxies with magnified standard candle SN Zwicky
Cameron Alexander Campbell Lemon, Rémy Elie Joseph, Johan Richard
Detecting gravitationally lensed supernovae is among the biggest challenges in astronomy. It involves a combination of two very rare phenomena: catching the transient signal of a stellar explosion in a distant galaxy and observing it through a nearly perfe ...
NATURE PORTFOLIO2023The ellipticity parameterization for an NFW profile: An overlooked angular structure in strong lens modeling
Galaxy-scale gravitational lenses are often modeled with two-component mass profiles where one component represents the stellar mass and the second is a Navarro Frenk White (NFW) profile representing the dark matter. Outside of the spherical case, the NFW ...
Les Ulis Cedex A2023Boundary Stabilization of Focusing NLKG near Unstable Equilibria: Radial Case
Joachim Krieger, Shengquan Xiang
We investigate the stability and stabilization of the cubic focusing Klein-Gordon equation around static solutions on the closed ball in . First we show that the system is linearly unstable near the static solution for any dissipat ...
2020Non-perturbative probability distribution function for cosmological counts in cells
Sergey Sibiryakov, Mikhail Ivanov
We present a non-perturbative calculation of the 1-point probability distribution function (PDF) for the spherically-averaged matter density field. The PDF is represented as a path integral and is evaluated using the saddle-point method. It factorizes into ...
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