Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Benjamin, Joachimi"'
Autor:
Nicolas Tessore, Arthur Loureiro, Benjamin Joachimi, Maximilian von Wietersheim-Kramsta, Niall Jeffrey
Publikováno v:
The Open Journal of Astrophysics, Vol 6 (2023)
We present GLASS, the Generator for Large Scale Structure, a new code for the simulation of galaxy surveys for cosmology, which iteratively builds a light cone with matter, galaxies, and weak gravitational lensing signals as a sequence of nested shel
Externí odkaz:
https://doaj.org/article/93513343c8104fe38cbb23b611378ffe
Bayesian inference provides a pathway toward accurate predictions of source parameters (e.g., location and moment tensor), along with principled, well-calibrated uncertainty estimates. Unfortunately, standard Bayesian inference techniques can often r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a452e298e4d86b1afcf8c2e210240734
https://doi.org/10.5194/egusphere-egu23-7939
https://doi.org/10.5194/egusphere-egu23-7939
Publikováno v:
Physical Review Letters. 130
We determine the product of the expansion rate and angular-diameter distance at redshift $z=2.3$ from the anisotropy of Lyman-$\alpha$ (Ly$\alpha$) forest correlations measured by the Sloan Digital Sky Survey (SDSS). Our result is the most precise fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5d5101bf86bd46e884d935715001fd3
https://doi.org/10.1103/physrevlett.130.191003
https://doi.org/10.1103/physrevlett.130.191003
Autor:
Pablo Renard, Malgorzata Siudek, Martin B Eriksen, Laura Cabayol, Zheng Cai, Jorge Carretero, Ricard Casas, Francisco J Castander, Enrique Fernandez, Juan García-Bellido, Enrique Gaztanaga, Henk Hoekstra, Benjamin Joachimi, Ramon Miquel, David Navarro-Girones, Cristóbal Padilla, Eusebio Sanchez, Santiago Serrano, Pau Tallada-Crespí, Juan De Vicente, Anna Wittje, Angus H Wright
Publikováno v:
Astrophysics of Galaxies
Monthly Notices of the Royal Astronomical Society, 515(1), 146-166
Monthly Notices of the Royal Astronomical Society, 515(1), 146-166
The D4000 spectral break index is one of the most important features in the visible spectrum, as it is a proxy for stellar ages and is also used in galaxy classification. However, its direct measurement has always been reserved to spectroscopy. Here,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::323dde9a5d7f1318fd78c400a45cf169
https://doi.org/10.1093/mnras/stac1730
https://doi.org/10.1093/mnras/stac1730
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 511:1771-1788
We present $\it{CosmoPower}$, a suite of neural cosmological power spectrum emulators providing orders-of-magnitude acceleration for parameter estimation from two-point statistics analyses of Large-Scale Structure (LSS) and Cosmic Microwave Backgroun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39b84bc92e7d24f26ff2dc21e507890a
https://doi.org/10.1093/mnras/stac064
https://doi.org/10.1093/mnras/stac064
Autor:
Ji Yao, Huanyuan Shan, Pengjie Zhang, Xiangkun Liu, Catherine Heymans, Benjamin Joachimi, Marika Asgari, Maciej Bilicki, Hendrik Hildebrandt, Konrad Kuijken, Tilman Tröster, Jan Luca van den Busch, Angus Wright, Ziang Yan
Galaxy shear - cosmic microwave background (CMB) lensing convergence cross-correlations contain additional information on cosmology to auto-correlations. While being immune to certain systematic effects, they are affected by the galaxy intrinsic alig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::246c61a083ac26ac9c49402085c6afbf
Autor:
Pierre A. Burger, Oliver Friedrich, Joachim Harnois-Déraps, Peter Schneider, Marika Asgari, Maciej Bilicki, Hendrik Hildebrandt, Angus H. Wright, Tiago Castro, Klaus Dolag, Catherine Heymans, Benjamin Joachimi, Konrad Kuijken, Nicolas Martinet, HuanYuan Shan, Tilman Tröster
Publikováno v:
Astronomy & Astrophysics, 669
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2023, 669, pp.A69. ⟨10.1051/0004-6361/202244673⟩
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2023, 669, pp.A69. ⟨10.1051/0004-6361/202244673⟩
Astronomy & Astrophysics, 669
ISSN:0004-6361
ISSN:1432-0746
ISSN:0004-6361
ISSN:1432-0746
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::122bb1df204813f364a538f74a79ba85
http://arxiv.org/abs/2208.02171
http://arxiv.org/abs/2208.02171
Autor:
Benjamin Joachimi, Susan Pyne
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 503:2300-2317
We investigate the prospects for using the weak lensing bispectrum alongside the power spectrum to control systematic uncertainties in a Euclid-like survey. Three systematic effects are considered: the intrinsic alignment of galaxies, uncertainties i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0221c9f009ced55e7f4d34d56993d2df
https://doi.org/10.1093/mnras/stab413
https://doi.org/10.1093/mnras/stab413
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
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We present the GEOMAX algorithm and its python implementation for a two-step compression of bispectrum measurements. The first step groups bispectra by the geometric properties of their arguments; the second step then maximizes the Fisher information
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fafb8798443226d430ecc788dca5845d
https://doi.org/10.1093/mnras/staa1941
https://doi.org/10.1093/mnras/staa1941
Producing thousands of simulations of the dark matter distribution in the Universe with increasing precision is a challenging but critical task to facilitate the exploitation of current and forthcoming cosmological surveys. Many inexpensive substitut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8276b5dd0f8d1256f22ba7bf1b8fb3d5