Buchumschlag

Validation of the DESI DR2 Ly$α$ BAO analysis using synthetic datasets

Fuente: arXiv

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	Casas, L., Herrera-Alcantar, H. K., Chaves-Montero, J., Cuceu, A., Font-Ribera, A., Lokken, M., Abdul-Karim, M., Ramírez-Pérez, C., Aguilar, J., Ahlen, S., Andrade, U., Armengaud, E., Aviles, A., Bailey, S., BenZvi, S., Bianchi, D., Brodzeller, A., Brooks, D., Canning, R., Rosell, A. Carnero, Charles, M., Chaussidon, E., Claybaugh, T., Dawson, K. S., de la Macorra, A., de Mattia, A., Dey, Arjun, Dey, Biprateep, Ding, Z., Doel, P., Eisenstein, D. J., Elbers, W., Ferraro, S., Forero-Romero, J. E., Garcia-Quintero, C., Garrison, Lehman H., Gaztañaga, E., Gil-Marín, H., Gontcho, S. Gontcho A, Gonzalez-Morales, A. X., Gordon, C., Gutierrez, G., Guy, J., Herbold, M., Honscheid, K., Howlett, C., Huterer, D., Ishak, M., Juneau, S., Kehoe, R., Kirkby, D., Kisner, T., Kremin, A., Lahav, O., Landriau, M., Goff, J. M. Le, Guillou, L. Le, Leauthaud, A., Levi, M. E., Li, Q., Manera, M., Martini, P., Meisner, A., Mena-Fernández, J., Miquel, R., Moustakas, J., Santos, D. Muñoz, Myers, A. D., Nadathur, S., Napolitano, L., Niz, G., Noriega, H. E., Paillas, E., Palanque-Delabrouille, N., Percival, W. J., Pieri, Matthew M., Poppett, C., Prada, F., Pérez-Ràfols, I., Ravoux, C., Rossi, G., Sanchez, E., Schlegel, D., Schubnell, M., Seo, H., Sinigaglia, F., Sprayberry, D., Tan, T., Tarlé, G., Taylor, P., Turner, W., Vargas-Magaña, M., Walther, M., Weaver, B. A., Wolfson, M., Yèche, C., Zarrouk, P., Zhou, R.
Format:	Preprint
Veröffentlicht:	2025
Schlagworte:	Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics
Online-Zugang:	Acceder al recurso
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

_version_	1866917967276539904
author	Casas, L. Herrera-Alcantar, H. K. Chaves-Montero, J. Cuceu, A. Font-Ribera, A. Lokken, M. Abdul-Karim, M. Ramírez-Pérez, C. Aguilar, J. Ahlen, S. Andrade, U. Armengaud, E. Aviles, A. Bailey, S. BenZvi, S. Bianchi, D. Brodzeller, A. Brooks, D. Canning, R. Rosell, A. Carnero Charles, M. Chaussidon, E. Claybaugh, T. Dawson, K. S. de la Macorra, A. de Mattia, A. Dey, Arjun Dey, Biprateep Ding, Z. Doel, P. Eisenstein, D. J. Elbers, W. Ferraro, S. Forero-Romero, J. E. Garcia-Quintero, C. Garrison, Lehman H. Gaztañaga, E. Gil-Marín, H. Gontcho, S. Gontcho A Gonzalez-Morales, A. X. Gordon, C. Gutierrez, G. Guy, J. Herbold, M. Honscheid, K. Howlett, C. Huterer, D. Ishak, M. Juneau, S. Kehoe, R. Kirkby, D. Kisner, T. Kremin, A. Lahav, O. Landriau, M. Goff, J. M. Le Guillou, L. Le Leauthaud, A. Levi, M. E. Li, Q. Manera, M. Martini, P. Meisner, A. Mena-Fernández, J. Miquel, R. Moustakas, J. Santos, D. Muñoz Myers, A. D. Nadathur, S. Napolitano, L. Niz, G. Noriega, H. E. Paillas, E. Palanque-Delabrouille, N. Percival, W. J. Pieri, Matthew M. Poppett, C. Prada, F. Pérez-Ràfols, I. Ravoux, C. Rossi, G. Sanchez, E. Schlegel, D. Schubnell, M. Seo, H. Sinigaglia, F. Sprayberry, D. Tan, T. Tarlé, G. Taylor, P. Turner, W. Vargas-Magaña, M. Walther, M. Weaver, B. A. Wolfson, M. Yèche, C. Zarrouk, P. Zhou, R.
author_facet	Casas, L. Herrera-Alcantar, H. K. Chaves-Montero, J. Cuceu, A. Font-Ribera, A. Lokken, M. Abdul-Karim, M. Ramírez-Pérez, C. Aguilar, J. Ahlen, S. Andrade, U. Armengaud, E. Aviles, A. Bailey, S. BenZvi, S. Bianchi, D. Brodzeller, A. Brooks, D. Canning, R. Rosell, A. Carnero Charles, M. Chaussidon, E. Claybaugh, T. Dawson, K. S. de la Macorra, A. de Mattia, A. Dey, Arjun Dey, Biprateep Ding, Z. Doel, P. Eisenstein, D. J. Elbers, W. Ferraro, S. Forero-Romero, J. E. Garcia-Quintero, C. Garrison, Lehman H. Gaztañaga, E. Gil-Marín, H. Gontcho, S. Gontcho A Gonzalez-Morales, A. X. Gordon, C. Gutierrez, G. Guy, J. Herbold, M. Honscheid, K. Howlett, C. Huterer, D. Ishak, M. Juneau, S. Kehoe, R. Kirkby, D. Kisner, T. Kremin, A. Lahav, O. Landriau, M. Goff, J. M. Le Guillou, L. Le Leauthaud, A. Levi, M. E. Li, Q. Manera, M. Martini, P. Meisner, A. Mena-Fernández, J. Miquel, R. Moustakas, J. Santos, D. Muñoz Myers, A. D. Nadathur, S. Napolitano, L. Niz, G. Noriega, H. E. Paillas, E. Palanque-Delabrouille, N. Percival, W. J. Pieri, Matthew M. Poppett, C. Prada, F. Pérez-Ràfols, I. Ravoux, C. Rossi, G. Sanchez, E. Schlegel, D. Schubnell, M. Seo, H. Sinigaglia, F. Sprayberry, D. Tan, T. Tarlé, G. Taylor, P. Turner, W. Vargas-Magaña, M. Walther, M. Weaver, B. A. Wolfson, M. Yèche, C. Zarrouk, P. Zhou, R.
contents	The second data release (DR2) of the Dark Energy Spectroscopic Instrument (DESI), containing data from the first three years of observations, doubles the number of Lyman-$α$ (Ly$α$) forest spectra in DR1 and it provides the largest dataset of its kind. To ensure a robust validation of the Baryonic Acoustic Oscillation (BAO) analysis using Ly$α$ forests, we have made significant updates compared to DR1 to both the mocks and the analysis framework used in the validation. In particular, we present CoLoRe-QL, a new set of Ly$α$ mocks that use a quasi-linear input power spectrum to incorporate the non-linear broadening of the BAO peak. We have also increased the number of realisations used in the validation to 400, compared to the 150 realisations used in DR1. Finally, we present a detailed study of the impact of quasar redshift errors on the BAO measurement, and we compare different strategies to mask Damped Lyman-$α$ Absorbers (DLAs) in our spectra. The BAO measurement from the Ly$α$ dataset of DESI DR2 is presented in a companion publication.
format	Preprint
id	arxiv_https___arxiv_org_abs_2503_14741
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Validation of the DESI DR2 Ly$α$ BAO analysis using synthetic datasets Casas, L. Herrera-Alcantar, H. K. Chaves-Montero, J. Cuceu, A. Font-Ribera, A. Lokken, M. Abdul-Karim, M. Ramírez-Pérez, C. Aguilar, J. Ahlen, S. Andrade, U. Armengaud, E. Aviles, A. Bailey, S. BenZvi, S. Bianchi, D. Brodzeller, A. Brooks, D. Canning, R. Rosell, A. Carnero Charles, M. Chaussidon, E. Claybaugh, T. Dawson, K. S. de la Macorra, A. de Mattia, A. Dey, Arjun Dey, Biprateep Ding, Z. Doel, P. Eisenstein, D. J. Elbers, W. Ferraro, S. Forero-Romero, J. E. Garcia-Quintero, C. Garrison, Lehman H. Gaztañaga, E. Gil-Marín, H. Gontcho, S. Gontcho A Gonzalez-Morales, A. X. Gordon, C. Gutierrez, G. Guy, J. Herbold, M. Honscheid, K. Howlett, C. Huterer, D. Ishak, M. Juneau, S. Kehoe, R. Kirkby, D. Kisner, T. Kremin, A. Lahav, O. Landriau, M. Goff, J. M. Le Guillou, L. Le Leauthaud, A. Levi, M. E. Li, Q. Manera, M. Martini, P. Meisner, A. Mena-Fernández, J. Miquel, R. Moustakas, J. Santos, D. Muñoz Myers, A. D. Nadathur, S. Napolitano, L. Niz, G. Noriega, H. E. Paillas, E. Palanque-Delabrouille, N. Percival, W. J. Pieri, Matthew M. Poppett, C. Prada, F. Pérez-Ràfols, I. Ravoux, C. Rossi, G. Sanchez, E. Schlegel, D. Schubnell, M. Seo, H. Sinigaglia, F. Sprayberry, D. Tan, T. Tarlé, G. Taylor, P. Turner, W. Vargas-Magaña, M. Walther, M. Weaver, B. A. Wolfson, M. Yèche, C. Zarrouk, P. Zhou, R. Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics The second data release (DR2) of the Dark Energy Spectroscopic Instrument (DESI), containing data from the first three years of observations, doubles the number of Lyman-$α$ (Ly$α$) forest spectra in DR1 and it provides the largest dataset of its kind. To ensure a robust validation of the Baryonic Acoustic Oscillation (BAO) analysis using Ly$α$ forests, we have made significant updates compared to DR1 to both the mocks and the analysis framework used in the validation. In particular, we present CoLoRe-QL, a new set of Ly$α$ mocks that use a quasi-linear input power spectrum to incorporate the non-linear broadening of the BAO peak. We have also increased the number of realisations used in the validation to 400, compared to the 150 realisations used in DR1. Finally, we present a detailed study of the impact of quasar redshift errors on the BAO measurement, and we compare different strategies to mask Damped Lyman-$α$ Absorbers (DLAs) in our spectra. The BAO measurement from the Ly$α$ dataset of DESI DR2 is presented in a companion publication.
title	Validation of the DESI DR2 Ly$α$ BAO analysis using synthetic datasets
topic	Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics
url	https://arxiv.org/abs/2503.14741