Zobrazeno 1 - 10
of 4 244
pro vyhledávání: '"WILL, J. A."'
Super sample covariance (SSC) is important when estimating covariance matrices using a set of mock catalogues for galaxy surveys. If the underlying cosmological simulations do not include the variation in background parameters appropriate for the sim
Externí odkaz:
http://arxiv.org/abs/2411.16948
We use machine learning methods to search for parity violations in the Large-Scale Structure (LSS) of the Universe, motivated by recent claims of chirality detection using the 4-Point Correlation Function (4PCF), which would suggest new physics durin
Externí odkaz:
http://arxiv.org/abs/2410.16030
With the advent of the next generation of astrophysics experiments, the volume of data available to researchers will be greater than ever. As these projects will significantly drive down statistical uncertainties in measurements, it is crucial to dev
Externí odkaz:
http://arxiv.org/abs/2410.03507
Obtaining tight constraints on primordial non-Gaussianity (PNG) is a key step in discriminating between different models for cosmic inflation. The constraining power from large-scale structure (LSS) measurements is expected to overtake that from cosm
Externí odkaz:
http://arxiv.org/abs/2409.13583
To improve the performance of full-shape analyses of large-scale structure, we consider using a halo occupation distribution (HOD)-informed prior for the effective field theory (EFT) nuisance parameters. We generate 320 000 mock galaxy catalogs using
Externí odkaz:
http://arxiv.org/abs/2409.12937
Autor:
Zhou, Rongpu, Guy, Julien, Koposov, Sergey E., Schlafly, Edward F., Schlegel, David, Aguilar, Jessica, Ahlen, Steven, Bailey, Stephen, Bianchi, David, Brooks, David, Chaussidon, Edmond, Claybaugh, Todd, Dawson, Kyle, de la Macorra, Axel, Dey, Biprateep, Eisenstein, Daniel J., Ferraro, Simone, Font-Ribera, Andreu, Forero-Romero, Jaime E., Gaztañaga, Enrique, Gontcho, Satya Gontcho A, Gutierrez, Gaston, Honscheid, Klaus, Juneau, Stephanie, Kehoe, Robert, Kirkby, David, Kisner, Theodore, Kremin, Anthony, Lambert, Andrew, Landriau, Martin, Guillou, Laurent Le, Levi, Michael E., Li, Ting S., Manera, Marc, Martini, Paul, Meisner, Aaron, Miquel, Ramon, Moustakas, John, Myers, Adam D., Newman, Jeffrey A., Niz, Gustavo, Palanque-Delabrouille, Nathalie, Percival, Will J., Poppett, Claire, Prada, Francisco, Raichoor, Anand, Ross, Ashley J., Rossi, Graziano, Sanchez, Eusebio, Saydjari, Andrew K., Schubnell, Michael, Sprayberry, David, Tarl, Gregory, Weaver, Benjamin A., Zarrouk, Pauline, Zou, Hu
We present new Galactic reddening maps of the high Galactic latitude sky using DESI imaging and spectroscopy. We directly measure the reddening of 2.6 million stars by comparing the observed stellar colors in $g-r$ and $r-z$ from DESI imaging with th
Externí odkaz:
http://arxiv.org/abs/2409.05140
It is folklore that tree-width is monotone under taking subgraphs (i.e. injective graph homomorphisms) and contractions (certain kinds of surjective graph homomorphisms). However, although tree-width is obviously not monotone under any surjective gra
Externí odkaz:
http://arxiv.org/abs/2408.15184
Autor:
Kim, Joshua, Sailer, Noah, Madhavacheril, Mathew S., Ferraro, Simone, Abril-Cabezas, Irene, Aguilar, Jessica Nicole, Ahlen, Steven, Bond, J. Richard, Brooks, David, Burtin, Etienne, Calabrese, Erminia, Chen, Shi-Fan, Choi, Steve K., Claybaugh, Todd, Darwish, Omar, de la Macorra, Axel, DeRose, Joseph, Devlin, Mark, Dey, Arjun, Doel, Peter, Dunkley, Jo, Embil-Villagra, Carmen, Farren, Gerrit S., Font-Ribera, Andreu, Forero-Romero, Jaime E., Gaztañaga, Enrique, Gluscevic, Vera, Gontcho, Satya Gontcho A, Guy, Julien, Honscheid, Klaus, Howlett, Cullan, Kirkby, David, Kisner, Theodore, Kremin, Anthony, Landriau, Martin, Guillou, Laurent Le, Levi, Michael E., MacCrann, Niall, Manera, Marc, Marques, Gabriela A., Meisner, Aaron, Miquel, Ramon, Moodley, Kavilan, Moustakas, John, Newburgh, Laura B., Newman, Jeffrey A., Niz, Gustavo, Orlowski-Scherer, John, Palanque-Delabrouille, Nathalie, Percival, Will J., Prada, Francisco, Qu, Frank J., Rossi, Graziano, Sanchez, Eusebio, Schaan, Emmanuel, Schlafly, Edward F., Schlegel, David, Schubnell, Michael, Sehgal, Neelima, Seo, Hee-Jung, Shaikh, Shabbir, Sherwin, Blake D., Sifón, Cristóbal, Sprayberry, David, Staggs, Suzanne T., Tarlé, Gregory, van Engelen, Alexander, Weaver, Benjamin Alan, Wenzl, Lukas, White, Martin, Wollack, Edward J., Yèche, Christophe, Zou, Hu
We present a high-significance cross-correlation of CMB lensing maps from the Atacama Cosmology Telescope (ACT) Data Release 6 (DR6) with spectroscopically calibrated luminous red galaxies (LRGs) from the Dark Energy Spectroscopic Instrument (DESI).
Externí odkaz:
http://arxiv.org/abs/2407.04606
Autor:
Fraser, Tristan S., Paillas, Enrique, Percival, Will J., Nadathur, Seshadri, Radinović, Slađana, Winther, Hans A.
We introduce an emulator-based method to model the cross-correlation between cosmological voids and galaxies. This allows us to model the effect of cosmology on void finding and on the shape of the void-galaxy cross-correlation function, improving on
Externí odkaz:
http://arxiv.org/abs/2407.03221
Autor:
Radinović, Slađana, Winther, Hans A., Nadathur, Seshadri, Percival, Will J., Paillas, Enrique, Fraser, Tristan Sohrab, Massara, Elena, Woodfinden, Alex
Publikováno v:
A&A 691, A39 (2024)
Under the assumption of statistical isotropy, and in the absence of directional selection effects, a stack of voids is expected to be spherically symmetric, which makes it an excellent object to use for an Alcock-Paczy\'nski (AP) test. This is common
Externí odkaz:
http://arxiv.org/abs/2407.02699