Zobrazeno 1 - 10
of 162
pro vyhledávání: '"Nadathur, Seshadri"'
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
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
Autor:
Demirbozan, Umut, Nadathur, Seshadri, Ferrero, Ismael, Fosalba, Pablo, Kovacs, Andras, Miquel, Ramon, Davies, Christopher T., Pandey, Shivam, Adamow, Monika, Bechtol, Keith, Drlica-Wagner, Alex, Gruendl, Robert, Hartley, Will, Pieres, Adriano, Ross, Ashley, Rykoff, Eli, Sheldon, Erin, Yanny, Brian, Abbott, Tim, Aguena, Michel, Allam, Sahar, Alves, Otavio, Bacon, David, Bertin, Emmanuel, Bocquet, Sebastian, Brooks, David, Rosell, Aurelio Carnero, Carretero, Jorge, Cawthon, Ross, da Costa, Luiz, Pereira, Maria Elidaiana da Silva, De Vicente, Juan, Desai, Shantanu, Doel, Peter, Everett, Spencer, Flaugher, Brenna, Friedel, Douglas, Frieman, Josh, Gatti, Marco, Gaztanaga, Enrique, Giannini, Giulia, Gutierrez, Gaston, Hinton, Samuel, Hollowood, Devon L., James, David, Jeffrey, Niall, Kuehn, Kyler, Lahav, Ofer, Lee, Sujeong, Marshall, Jennifer, Mena-Fernández, Juan, Mohr, Joe, Myles, Justin, Ogando, Ricardo, Malagón, Andrés Plazas, Roodman, Aaron, Sanchez, Eusebio, Sevilla, Ignacio, Smith, Mathew, Soares-Santos, Marcelle, Suchyta, Eric, Swanson, Molly, Tarle, Gregory, Weaverdyck, Noah, Weller, Jochen, Wiseman, Philip
$ $Low density cosmic voids gravitationally lens the cosmic microwave background (CMB), leaving a negative imprint on the CMB convergence $\kappa$. This effect provides insight into the distribution of matter within voids, and can also be used to stu
Externí odkaz:
http://arxiv.org/abs/2404.18278
Autor:
Cuesta-Lazaro, Carolina, Paillas, Enrique, Yuan, Sihan, Cai, Yan-Chuan, Nadathur, Seshadri, Percival, Will J., Beutler, Florian, de Mattia, Arnaud, Eisenstein, Daniel, Forero-Sanchez, Daniel, Padilla, Nelson, Pinon, Mathilde, Ruhlmann-Kleider, Vanina, Sánchez, Ariel G., Valogiannis, Georgios, Zarrouk, Pauline
Combining galaxy clustering information from regions of different environmental densities can help break cosmological parameter degeneracies and access non-Gaussian information from the density field that is not readily captured by the standard two-p
Externí odkaz:
http://arxiv.org/abs/2309.16539
Autor:
Paillas, Enrique, Cuesta-Lazaro, Carolina, Percival, Will J., Nadathur, Seshadri, Cai, Yan-Chuan, Yuan, Sihan, Beutler, Florian, de Mattia, Arnaud, Eisenstein, Daniel, Forero-Sanchez, Daniel, Padilla, Nelson, Pinon, Mathilde, Ruhlmann-Kleider, Vanina, Sánchez, Ariel G., Valogiannis, Georgios, Zarrouk, Pauline
We present a clustering analysis of the BOSS DR12 CMASS galaxy sample, combining measurements of the galaxy two-point correlation function and density-split clustering down to a scale of $1\,h^{-1}{\rm Mpc}$. Our theoretical framework is based on emu
Externí odkaz:
http://arxiv.org/abs/2309.16541
Autor:
Gerardi, Francesca, Cuceu, Andrei, Joachimi, Benjamin, Nadathur, Seshadri, Font-Ribera, Andreu
The Lyman-$\alpha$ (Ly$\alpha$) three-dimensional correlation functions have been widely used to perform cosmological inference using the baryon acoustic oscillation (BAO) scale. While the traditional inference approach employs a data vector with sev
Externí odkaz:
http://arxiv.org/abs/2309.13164
Autor:
Rashkovetskyi, Michael, Eisenstein, Daniel J., Aguilar, Jessica Nicole, Brooks, David, Claybaugh, Todd, Cole, Shaun, Dawson, Kyle, de la Macorra, Axel, Doel, Peter, Fanning, Kevin, Font-Ribera, Andreu, Forero-Romero, Jaime E., Gontcho, Satya Gontcho A, Hahn, ChangHoon, Honscheid, Klaus, Kehoe, Robert, Kisner, Theodore, Landriau, Martin, Levi, Michael, Manera, Marc, Miquel, Ramon, Moon, Jeongin, Nadathur, Seshadri, Nie, Jundan, Poppett, Claire, Ross, Ashley J., Rossi, Graziano, Sanchez, Eusebio, Saulder, Christoph, Schubnell, Michael, Seo, Hee-Jong, Tarle, Gregory, Valcin, David, Weaver, Benjamin Alan, Zhao, Cheng, Zhou, Zhimin, Zou, Hu
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 524, Issue 3, September 2023, Pages 3894-3911
We present an extended validation of semi-analytical, semi-empirical covariance matrices for the two-point correlation function (2PCF) on simulated catalogs representative of Luminous Red Galaxies (LRG) data collected during the initial two months of
Externí odkaz:
http://arxiv.org/abs/2306.06320
Autor:
Yuan, Sihan, Zhang, Hanyu, Ross, Ashley J., Donald-McCann, Jamie, Hadzhiyska, Boryana, Wechsler, Risa H., Zheng, Zheng, Alam, Shadab, Gonzalez-Perez, Violeta, Aguilar, Jessica Nicole, Ahlen, Steven, Bianchi, Davide, Brooks, David, de la Macorra, Axel, Fanning, Kevin, Forero-Romero, Jaime E., Honscheid, Klaus, Ishak, Mustapha, Kehoe, Robert, Lasker, James, Landriau, Martin, Manera, Marc, Martini, Paul, Meisner, Aaron, Miquel, Ramon, Moustakas, John, Nadathur, Seshadri, Newman, Jeffrey A., Nie, Jundan, Percival, Will, Poppett, Claire, Rocher, Antoine, Rossi, Graziano, Sanchez, Eusebio, Samushia, Lado, Schubnell, Michael, Seo, Hee-Jong, Tarle, Gregory, Weaver, Benjamin Alan, Yu, Jiaxi, Zhou, Zhimin, Zou, Hu
We present the first comprehensive Halo Occupation Distribution (HOD) analysis of the DESI One-Percent survey Luminous Red Galaxy (LRG) and Quasi-Stellar Object (QSO) samples. We constrain the HOD of each sample and test possible HOD extensions by fi
Externí odkaz:
http://arxiv.org/abs/2306.06314
Autor:
Moon, Jeongin, Valcin, David, Rashkovetskyi, Michael, Saulder, Christoph, Aguilar, Jessica Nicole, Ahlen, Steven, Alam, Shadab, Bailey, Stephen, Baltay, Charles, Blum, Robert, Brooks, David, Burtin, Etienne, Chaussidon, Edmond, Dawson, Kyle, de la Macorra, Axel, de Mattia, Arnaud, Dhungana, Govinda, Eisenstein, Daniel, Flaugher, Brenna, Font-Ribera, Andreu, Forero-Romero, Jaime E., Garcia-Quintero, Cristhian, Gontcho, Satya Gontcho A, Guy, Julien, Hanif, Malik Muhammad Sikandar, Honscheid, Klaus, Ishak, Mustapha, Kehoe, Robert, Kim, Sumi, Kisner, Theodore, Kremin, Anthony, Landriau, Martin, Guillou, Laurent Le, Levi, Michael, Manera, Marc, Martini, Paul, McDonald, Patrick, Meisner, Aaron, Miquel, Ramon, Moustakas, John, Myers, Adam, Nadathur, Seshadri, Neveux, Richard, Newman, Jeffrey A., Nie, Jundan, Padmanabhan, Nikhil, Palanque-Delabrouille, Nathalie, Percival, Will, Fernández, Alejandro Pérez, Poppett, Claire, Prada, Francisco, Raichoor, Anand, Ross, Ashley J., Rossi, Graziano, Samushia, Lado, Schlegel, David, Seo, Hee-Jong, Tarlé, Gregory, Magana, Mariana Vargas, Variu, Andrei, Weaver, Benjamin Alan, White, Martin J., Yèche, Christophe, Yuan, Sihan, Zhao, Cheng, Zhou, Rongpu, Zhou, Zhimin, Zou, Hu
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 525, Issue 4, November 2023, Pages 5406-5422
We present the first detection of the baryon acoustic oscillations (BAO) signal obtained using unblinded data collected during the initial two months of operations of the Stage-IV ground-based Dark Energy Spectroscopic Instrument (DESI). From a selec
Externí odkaz:
http://arxiv.org/abs/2304.08427
Autor:
Woodfinden, Alex, Percival, Will J., Nadathur, Seshadri, Winther, Hans A., Fraser, T. S., Massara, Elena, Paillas, Enrique, Radinović, Slađana
We present the cosmological implications of measurements of void-galaxy and galaxy-galaxy clustering from the Sloan Digital Sky Survey (SDSS) Main Galaxy Sample (MGS), Baryon Oscillation Spectroscopic Survey (BOSS), and extended BOSS (eBOSS) luminous
Externí odkaz:
http://arxiv.org/abs/2303.06143