Zobrazeno 1 - 10
of 331
pro vyhledávání: '"Rozo, Eduardo"'
Autor:
Boruah, Supranta S., Fiedorowicz, Pier, Garcia, Rafael, Coulton, William R., Rozo, Eduardo, Fabbian, Giulio
Extracting non-Gaussian information from the next generation weak lensing surveys will require fast and accurate full-sky simulations. This is difficult to achieve in practice with existing simulation methods: ray-traced $N$-body simulations are comp
Externí odkaz:
http://arxiv.org/abs/2406.05867
Autor:
Salazar, Edgar M., Rozo, Eduardo, García, Rafael, Kokron, Nickolas, Adhikari, Susmita, Diemer, Benedikt, Osinga, Calvin
Accurate modelling of the one-to-two halo transition has long been difficult to achieve. We demonstrate that physically motivated halo definitions that respect the bimodal phase-space distribution of dark matter particles near halos resolves this dif
Externí odkaz:
http://arxiv.org/abs/2406.04054
We update the field-level inference code KARMMA to enable tomographic forward-modelling of shear maps. Our code assumes a lognormal prior on the convergence field, and properly accounts for the cross-covariance in the lensing signal across tomographi
Externí odkaz:
http://arxiv.org/abs/2403.05484
Autor:
Zhou, Conghao, Wu, Hao-Yi, Salcedo, Andrés N., Grandis, Sebastian, Jeltema, Tesla, Leauthaud, Alexie, Costanzi, Matteo, Sunayama, Tomomi, Weinberg, David H., Zhang, Tianyu, Rozo, Eduardo, To, Chun-Hao, Bocquet, Sebastian, Varga, Tamas, Kwiecien, Matthew
Galaxy clusters identified with optical imaging tend to suffer from projection effects, which impact richness (the number of member galaxies in a cluster) and lensing coherently. Physically unassociated galaxies can be mistaken as cluster members due
Externí odkaz:
http://arxiv.org/abs/2312.11789
Autor:
Salcedo, Andrés N., Wu, Hao-Yi, Rozo, Eduardo, Weinberg, David H., To, Chun-Hao, Sunayama, Tomomi, Lee, Andy
The recent Dark Energy Survey Year 1 (DES-Y1) analysis of galaxy cluster abundances and weak lensing produced $\Omega_{\rm m}$ and $\sigma_8$ constraints in 5.6$\sigma$ tension with Planck. It is suggested in that work that this tension is driven by
Externí odkaz:
http://arxiv.org/abs/2310.03944
Autor:
Huang, Hung-Jin, Mandelbaum, Rachel, Freeman, Peter E, Chen, Yen-Chi, Rozo, Eduardo, Rykoff, Eli
We study the orientations of satellite galaxies in redMaPPer clusters constructed from the Sloan Digital Sky Survey at 0.1 < z < 0.35 to determine whether there is any preferential tendency for satellites to point radially towards cluster centres. We
Externí odkaz:
http://hdl.handle.net/10150/627131
http://arizona.openrepository.com/arizona/handle/10150/627131
http://arizona.openrepository.com/arizona/handle/10150/627131
Autor:
Boruah, Supranta S., Rozo, Eduardo
Field-level inference is emerging as a promising technique for optimally extracting information from cosmological datasets. Indeed, previous analyses have shown field-based inference produces tighter parameter constraints than power spectrum analyses
Externí odkaz:
http://arxiv.org/abs/2307.00070
Autor:
Niemiec, Anna, Jullo, Eric, Limousin, Marceau, Giocoli, Carlo, Erben, Thomas, Hildebrant, Hendrik, Kneib, Jean-Paul, Leauthaud, Alexie, Makler, Martin, Moraes, Bruno, Pereira, Maria E. S., Shan, Huanyuan, Rozo, Eduardo, Rykoff, Eli, Van Waerbeke, Ludovic
In the formation of galaxy groups and clusters, the dark matter haloes containing satellite galaxies are expected to be tidally stripped in gravitational interactions with the host. We use galaxy-galaxy weak lensing to measure the average mass of dar
Externí odkaz:
http://hdl.handle.net/10150/625737
http://arizona.openrepository.com/arizona/handle/10150/625737
http://arizona.openrepository.com/arizona/handle/10150/625737
Autor:
Baxter, Eric, Chang, Chihway, Jain, Bhuvnesh, Adhikari, Susmita, Dalal, Neal, Kravtsov, Andrey, More, Surhud, Rozo, Eduardo, Rykoff, Eli, Sheth, Ravi K.
Analytical models and simulations predict a rapid decline in the halo density profile associated with the transition from the "infalling" regime outside the halo to the "collapsed" regime within the halo. Using data from SDSS, we explore evidence for
Externí odkaz:
http://hdl.handle.net/10150/624484
http://arizona.openrepository.com/arizona/handle/10150/624484
http://arizona.openrepository.com/arizona/handle/10150/624484
Autor:
Simet, Melanie, McClintock, Tom, Mandelbaum, Rachel, Rozo, Eduardo, Rykoff, Eli, Sheldon, Erin, Wechsler, Risa H.
We perform a measurement of the mass-richness relation of the redMaPPer galaxy cluster catalogue using weak lensing data from the Sloan Digital Sky Survey (SDSS). We have carefully characterized a broad range of systematic uncertainties, including sh
Externí odkaz:
http://hdl.handle.net/10150/623938
http://arizona.openrepository.com/arizona/handle/10150/623938
http://arizona.openrepository.com/arizona/handle/10150/623938