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1. Fiducial-Cosmology-dependent systematics for the DESI 2024 BAO Analysis

Author

Pérez-Fernández, A., Medina-Varela, L., Ruggeri, R., Vargas-Magaña, M., Seo, H., Padmanabhan, N., Ishak, M., Aguilar, J., Ahlen, S., Alam, S., Alves, O., Brieden, S., Brooks, D., Rosell, A. Carnero, Chen, X., Claybaugh, T., Cole, S., Dawson, K., de la Macorra, A., de Mattia, A., Dey, Arjun, Ding, Z., Doel, P., Fanning, K., Garcia-Quintero, C., Gaztañaga, E., Gontcho, S. Gontcho A, Gutierrez, G., Honscheid, K., Juneau, S., Kirkby, D., Kisner, T., Lambert, A., Landriau, M., Lasker, J., Guillou, L. Le, Manera, M., Martini, P., Meisner, A., Mena-Fernández, J., Miquel, R., Moustakas, J., Myers, A. D., Nadathur, S., Newman, J. A., Niz, G., Paillas, E., Palanque-Delabrouille, N., Percival, W. J., Poppett, C., Prada, F., Rashkovetskyi, M., Rocher, A., Rossi, G., Sanchez, A., Sanchez, E., Schubnell, M., Sprayberry, D., Tarlé, G., Valcin, D., Weaver, B. A., Yu, J., and Zou, H.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

When measuring the Baryon Acoustic Oscillations (BAO) scale from galaxy surveys, one typically assumes a fiducial cosmology when converting redshift measurements into comoving distances and also when defining input parameters for the reconstruction algorithm. A parameterised template for the model to be fitted is also created based on a (possibly different) fiducial cosmology. This model reliance can be considered a form of data compression, and the data is then analysed allowing that the true answer is different from the fiducial cosmology assumed. In this study, we evaluate the impact of the fiducial cosmology assumed in the BAO analysis of the Dark Energy Spectroscopic Instrument (DESI) survey Data Release 1 (DR1) on the final measurements in DESI 2024 III. We utilise a suite of mock galaxy catalogues with survey realism that mirrors the DESI DR1 tracers: the bright galaxy sample (BGS), the luminous red galaxies (LRG), the emission line galaxies (ELG) and the quasars (QSO), spanning a redshift range from 0.1 to 2.1. We compare the four secondary AbacusSummit cosmologies against DESI's fiducial cosmology (Planck 2018). The secondary cosmologies explored include a lower cold dark matter density, a thawing dark energy universe, a higher number of effective species, and a lower amplitude of matter clustering. The mocks are processed through the BAO pipeline by consistently iterating the grid, template, and reconstruction reference cosmologies. We determine a conservative systematic contribution to the error of $0.1\%$ for both the isotropic and anisotropic dilation parameters $\alpha_{\rm iso}$ and $\alpha_{\rm AP}$. We then directly test the impact of the fiducial cosmology on DESI DR1 data., Comment: Supporting publication of DESI 2024 III: Baryon Acoustic Oscillations from Galaxies and Quasars

Published
2024

2. Systematic Effects in Galaxy-Galaxy Lensing with DESI

Author

Lange, J. U., Blake, C., Saulder, C., Jeffrey, N., DeRose, J., Beltz-Mohrmann, G., Emas, N., Garcia-Quintero, C., Hadzhiyska, B., Heydenreich, S., Ishak, M., Joudaki, S., Jullo, E., Krolewski, A., Leauthaud, A., Medina-Varela, L., Porredon, A., Rossi, G., Ruggeri, R., Xhakaj, E., Yuan, S., Aguilar, J., Ahlen, S., Brooks, D., Claybaugh, T., de la Macorra, A., Doel, P., Fanning, K., Ferraro, S., Font-Ribera, A., Forero-Romero, J. E., Gaztañaga, E., Gontcho, S. Gontcho A, Juneau, S., Kehoe, R., Kisner, T., Kremin, A., Landriau, M., Levi, M. E., Manera, M., Miquel, R., Moustakas, J., Mueller, E., Myers, A. D., Nie, J., Niz, G., Palanque-Delabrouille, N., Poppett, C., Rezaie, M., Sanchez, E., Schubnell, M., Seo, H., Silber, J., Sprayberry, D., Tarlé, G., Vargas-Magaña, M., Wechsler, R. H., Zhou, Z., and Zou, H.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The Dark Energy Spectroscopic Instrument (DESI) survey will measure spectroscopic redshifts for millions of galaxies across roughly $14,000 \, \mathrm{deg}^2$ of the sky. Cross-correlating targets in the DESI survey with complementary imaging surveys allows us to measure and analyze shear distortions caused by gravitational lensing in unprecedented detail. In this work, we analyze a series of mock catalogs with ray-traced gravitational lensing and increasing sophistication to estimate systematic effects on galaxy-galaxy lensing estimators such as the tangential shear $\gamma_{\mathrm{t}}$ and the excess surface density $\Delta\Sigma$. We employ mock catalogs tailored to the specific imaging surveys overlapping with the DESI survey: the Dark Energy Survey (DES), the Hyper Suprime-Cam (HSC) survey, and the Kilo-Degree Survey (KiDS). Among others, we find that fiber incompleteness can have significant effects on galaxy-galaxy lensing estimators but can be corrected effectively by up-weighting DESI targets with fibers by the inverse of the fiber assignment probability. Similarly, we show that intrinsic alignment and lens magnification are expected to be statistically significant given the precision forecasted for the DESI year-1 data set. Our study informs several analysis choices for upcoming cross-correlation studies of DESI with DES, HSC, and KiDS., Comment: 18 pages, 13 figures, version accepted for publication

Published
2024
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3. HOD-Dependent Systematics in Emission Line Galaxies for the DESI 2024 BAO analysis

Author

Garcia-Quintero, C., Mena-Fernández, J., Rocher, A., Yuan, S., Hadzhiyska, B., Alves, O., Rashkovetskyi, M., Seo, H., Padmanabhan, N., Nadathur, S., Howlett, C., Ishak, M., Medina-Varela, L., McDonald, P., Ross, A. J., Xie, Y., Chen, X., Bera, A., Aguilar, J., Ahlen, S., Andrade, U., BenZvi, S., Brooks, D., Burtin, E., Chen, S., Claybaugh, T., Cole, S., de la Macorra, A., de Mattia, A., Dey, A., Dey, B., Ding, Z., Doel, P., Fanning, K., Forero-Romero, J. E., Gaztañaga, E., Gil-Marín, H., Gontcho, S. Gontcho A, Gutierrez, G., Guy, J., Hahn, C., Honscheid, K., Kremin, A., Landriau, M., Guillou, L. Le, Levi, M. E., Manera, M., Martini, P., Meisner, A., Miquel, R., Moustakas, J., Mueller, E., Muñoz-Gutiérrez, A., Myers, A. D., Newman, J. A., Nie, J., Niz, G., Paillas, E., Palanque-Delabrouille, N., Percival, W. J., Poppett, C., Pérez-Fernández, A., Rosado-Marin, A., Rossi, G., Ruggeri, R., Sanchez, E., Schlegel, D., Schubnell, M., Sprayberry, D., Tarlé, G., Vargas-Magaña, M., Weaver, B. A., Yu, J., Zhang, H., Zhou, R., and Zou, H.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The Dark Energy Spectroscopic Instrument (DESI) will provide precise measurements of Baryon Acoustic Oscillations (BAO) to constrain the expansion history of the Universe and set stringent constraints on dark energy. Therefore, precise control of the global error budget due to various systematic effects is required for the DESI 2024 BAO analysis. In this work, we focus on the robustness of the BAO analysis against the Halo Occupation Distribution (HOD) modeling for the Emission Line Galaxy (ELG) tracer. Based on a common dark matter simulation, our analysis relies on HOD mocks tuned to early DESI data, namely the One-Percent survey data. To build the mocks, we use several HOD models for the ELG tracer as well as extensions to the baseline HOD models. Among these extensions, we consider distinct recipes for galactic conformity and assembly bias. We perform two independent analyses in the Fourier space and in the configuration space. We recover the BAO signal from two-point measurements after performing reconstruction on our mocks. Additionally, we also apply the control variates technique to reduce sample variance noise. Our BAO analysis can recover the isotropic BAO parameter $\alpha_\text{iso}$ within 0.1\% and the Alcock Paczynski parameter $\alpha_\text{AP}$ within 0.3\%. Overall, we find that our systematic error due to the HOD dependence is below 0.17\%, with the Fourier space analysis being more robust against the HOD systematics. We conclude that our analysis pipeline is robust enough against the HOD systematics for the ELG tracer in the DESI 2024 BAO analysis., Comment: Supporting publication of DESI 2024 III: Baryon Acoustic Oscillations from Galaxies and Quasars

Published
2024

4. HOD-Dependent Systematics for Luminous Red Galaxies in the DESI 2024 BAO Analysis

Author

Mena-Fernández, J., Garcia-Quintero, C., Yuan, S., Hadzhiyska, B., Alves, O., Rashkovetskyi, M., Seo, H., Padmanabhan, N., Nadathur, S., Howlett, C., Alam, S., Rocher, A., Ross, A. J., Sanchez, E., Ishak, M., Aguilar, J., Ahlen, S., Andrade, U., BenZvi, S., Brooks, D., Burtin, E., Chen, S., Chen, X., Claybaugh, T., Cole, S., de la Macorra, A., de Mattia, A., Dey, Arjun, Dey, B., Ding, Z., Doel, P., Fanning, K., Forero-Romero, J. E., Gaztañaga, E., Gil-Marín, H., Gontcho, S. Gontcho A, Gutierrez, G., Guy, J., Hahn, C., Honscheid, K., Juneau, S., Kremin, A., Landriau, M., Guillou, L. Le, Levi, M. E., Manera, M., Martini, P., Medina-Varela, L., Meisner, A., Miquel, R., Moustakas, J., Mueller, E., Muñoz-Gutiérrez, A., Myers, A. D., Newman, J. A., Nie, J., Niz, G., Paillas, E., Palanque-Delabrouille, N., Percival, W. J., Poppett, C., Pérez-Fernández, A., Rosado-Marin, A., Rossi, G., Ruggeri, R., Saulder, C., Schlegel, D., Schubnell, M., Sprayberry, D., Tarlé, G., Vargas-Magaña, M., Weaver, B. A., Yu, J., Zhang, H., and Zou, H.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

In this paper, we present the estimation of systematics related to the halo occupation distribution (HOD) modeling in the baryon acoustic oscillations (BAO) distance measurement of the Dark Energy Spectroscopic Instrument (DESI) 2024 analysis. This paper focuses on the study of HOD systematics for luminous red galaxies (LRG). We consider three different HOD models for LRGs, including the base 5-parameter vanilla model and two extensions to it, that we refer to as baseline and extended models. The baseline model is described by the 5 vanilla HOD parameters, an incompleteness factor and a velocity bias parameter, whereas the extended one also includes a galaxy assembly bias and a satellite profile parameter. We utilize the 25 dark matter simulations available in the AbacusSummit simulation suite at $z=$ 0.8 and generate mock catalogs for our different HOD models. To test the impact of the HOD modeling in the position of the BAO peak, we run BAO fits for all these sets of simulations and compare the best-fit BAO-scaling parameters $\alpha_{\rm iso}$ and $\alpha_{\rm AP}$ between every pair of HOD models. We do this for both Fourier and configuration spaces independently, using post-reconstruction measurements. We find a 3.3$\sigma$ detection of HOD systematic for $\alpha_{\rm AP}$ in configuration space with an amplitude of 0.19%. For the other cases, we did not find a 3$\sigma$ detection, and we decided to compute a conservative estimation of the systematic using the ensemble of shifts between all pairs of HOD models. By doing this, we quote a systematic with an amplitude of 0.07% in $\alpha_{\rm iso}$ for both Fourier and configuration spaces; and of 0.09% in $\alpha_{\rm AP}$ for Fourier space., Comment: 36 pages, 9 figures. Supporting publication of DESI 2024 III: Baryon Acoustic Oscillations from Galaxies and Quasars

Published
2024

5. Semi-analytical covariance matrices for two-point correlation function for DESI 2024 data

Author

Rashkovetskyi, M., Forero-Sánchez, D., de Mattia, A., Eisenstein, D. J., Padmanabhan, N., Seo, H., Ross, A. J., Aguilar, J., Ahlen, S., Alves, O., Andrade, U., Brooks, D., Burtin, E., Claybaugh, T., Cole, S., de la Macorra, A., Ding, Z., Doel, P., Fanning, K., Ferraro, S., Font-Ribera, A., Forero-Romero, J. E., Garcia-Quintero, C., Gil-Marín, H., Gontcho, S. Gontcho A, Gonzalez-Morales, A. X., Gutierrez, G., Honscheid, K., Howlett, C., Juneau, S., Kremin, A., Guillou, L. Le, Manera, M., Medina-Varela, L., Mena-Fernández, J., Miquel, R., Mueller, E., Muñoz-Gutiérrez, A., Myers, A. D., Nie, J., Niz, G., Paillas, E., Percival, W. J., Poppett, C., Pérez-Fernández, A., Rezaie, M., Rosado-Marin, A., Rossi, G., Ruggeri, R., Sanchez, E., Saulder, C., Schlegel, D., Schubnell, M., Sprayberry, D., Tarlé, G., Weaver, B. A., Yu, J., Zhao, C., and Zou, H.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics, Physics - Data Analysis, Statistics and Probability
Abstract

We present an optimized way of producing the fast semi-analytical covariance matrices for the Legendre moments of the two-point correlation function, taking into account survey geometry and mimicking the non-Gaussian effects. We validate the approach on simulated (mock) catalogs for different galaxy types, representative of the Dark Energy Spectroscopic Instrument (DESI) Data Release 1, used in 2024 analyses. We find only a few percent differences between the mock sample covariance matrix and our results, which can be expected given the approximate nature of the mocks, although we do identify discrepancies between the shot-noise properties of the DESI fiber assignment algorithm and the faster approximation used in the mocks. Importantly, we find a close agreement (<~ 5% relative differences) in the projected errorbars for distance scale parameters for the baryon acoustic oscillation measurements. This confirms our method as an attractive alternative to simulation-based covariance matrices, especially for non-standard models or galaxy sample selections, in particular, relevant to the broad current and future analyses of DESI data., Comment: Supporting publication of DESI 2024 III: Baryon Acoustic Oscillations from Galaxies and Quasars (arXiv:2404.03000). 29 pages, 4 figures. Prepared for submission to JCAP. Code available at https://github.com/oliverphilcox/RascalC and https://github.com/misharash/RascalC-scripts/tree/DESI2024. Data points from the plots available at https://zenodo.org/doi/10.5281/zenodo.10895161

Published
2024

6. DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations

Author

DESI Collaboration, Adame, A. G., Aguilar, J., Ahlen, S., Alam, S., Alexander, D. M., Alvarez, M., Alves, O., Anand, A., Andrade, U., Armengaud, E., Avila, S., Aviles, A., Awan, H., Bahr-Kalus, B., Bailey, S., Baltay, C., Bault, A., Behera, J., BenZvi, S., Bera, A., Beutler, F., Bianchi, D., Blake, C., Blum, R., Brieden, S., Brodzeller, A., Brooks, D., Buckley-Geer, E., Burtin, E., Calderon, R., Canning, R., Rosell, A. Carnero, Cereskaite, R., Cervantes-Cota, J. L., Chabanier, S., Chaussidon, E., Chaves-Montero, J., Chen, S., Chen, X., Claybaugh, T., Cole, S., Cuceu, A., Davis, T. M., Dawson, K., de la Macorra, A., de Mattia, A., Deiosso, N., Dey, A., Dey, B., Ding, Z., Doel, P., Edelstein, J., Eftekharzadeh, S., Eisenstein, D. J., Elliott, A., Fagrelius, P., Fanning, K., Ferraro, S., Ereza, J., Findlay, N., Flaugher, B., Font-Ribera, A., Forero-Sánchez, D., Forero-Romero, J. E., Frenk, C. S., Garcia-Quintero, C., Gaztañaga, E., Gil-Marín, H., Gontcho, S. Gontcho A, Gonzalez-Morales, A. X., Gonzalez-Perez, V., Gordon, C., Green, D., Gruen, D., Gsponer, R., Gutierrez, G., Guy, J., Hadzhiyska, B., Hahn, C., Hanif, M. M. S, Herrera-Alcantar, H. K., Honscheid, K., Howlett, C., Huterer, D., Iršič, V., Ishak, M., Juneau, S., Karaçaylı, N. G., Kehoe, R., Kent, S., Kirkby, D., Kremin, A., Krolewski, A., Lai, Y., Lan, T. -W., Landriau, M., Lang, D., Lasker, J., Goff, J. M. Le, Guillou, L. Le, Leauthaud, A., Levi, M. E., Li, T. S., Linder, E., Lodha, K., Magneville, C., Manera, M., Margala, D., Martini, P., Maus, M., McDonald, P., Medina-Varela, L., Meisner, A., Mena-Fernández, J., Miquel, R., Moon, J., Moore, S., Moustakas, J., Mudur, N., Mueller, E., Muñoz-Gutiérrez, A., Myers, A. D., Nadathur, S., Napolitano, L., Neveux, R., Newman, J. A., Nguyen, N. M., Nie, J., Niz, G., Noriega, H. E., Padmanabhan, N., Paillas, E., Palanque-Delabrouille, N., Pan, J., Penmetsa, S., Percival, W. J., Pieri, M. M., Pinon, M., Poppett, C., Porredon, A., Prada, F., Pérez-Fernández, A., Pérez-Ràfols, I., Rabinowitz, D., Raichoor, A., Ramírez-Pérez, C., Ramirez-Solano, S., Ravoux, C., Rashkovetskyi, M., Rezaie, M., Rich, J., Rocher, A., Rockosi, C., Roe, N. A., Rosado-Marin, A., Ross, A. J., Rossi, G., Ruggeri, R., Ruhlmann-Kleider, V., Samushia, L., Sanchez, E., Saulder, C., Schlafly, E. F., Schlegel, D., Schubnell, M., Seo, H., Shafieloo, A., Sharples, R., Silber, J., Slosar, A., Smith, A., Sprayberry, D., Tan, T., Tarlé, G., Taylor, P., Trusov, S., Ureña-López, L. A., Vaisakh, R., Valcin, D., Valdes, F., Vargas-Magaña, M., Verde, L., Walther, M., Wang, B., Wang, M. S., Weaver, B. A., Weaverdyck, N., Wechsler, R. H., Weinberg, D. H., White, M., Yu, J., Yu, Y., Yuan, S., Yèche, C., Zaborowski, E. A., Zarrouk, P., Zhang, H., Zhao, C., Zhao, R., Zhou, R., Zhuang, T., and Zou, H.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present cosmological results from the measurement of baryon acoustic oscillations (BAO) in galaxy, quasar and Lyman-$\alpha$ forest tracers from the first year of observations from the Dark Energy Spectroscopic Instrument (DESI), to be released in the DESI Data Release 1. DESI BAO provide robust measurements of the transverse comoving distance and Hubble rate, or their combination, relative to the sound horizon, in seven redshift bins from over 6 million extragalactic objects in the redshift range $0.1-1$ and $w_a<0$. This preference is 2.6$\sigma$ for the DESI+CMB combination, and persists or grows when SN~Ia are added in, giving results discrepant with the $\Lambda$CDM model at the $2.5\sigma$, $3.5\sigma$ or $3.9\sigma$ levels for the addition of Pantheon+, Union3, or DES-SN5YR datasets respectively. For the flat $\Lambda$CDM model with the sum of neutrino mass $\sum m_\nu$ free, combining the DESI and CMB data yields an upper limit $\sum m_\nu < 0.072$ $(0.113)$ eV at 95% confidence for a $\sum m_\nu>0$ $(\sum m_\nu>0.059)$ eV prior. These neutrino-mass constraints are substantially relaxed in models beyond $\Lambda$CDM. [Abridged.], Comment: This DESI Collaboration Key Publication is part of the 2024 publication series using the first year of observations (see https://data.desi.lbl.gov/doc/papers). 68 pages, 15 figures. Version accepted for publication in JCAP

Published
2024

7. DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman Alpha Forest

Author

DESI Collaboration, Adame, A. G., Aguilar, J., Ahlen, S., Alam, S., Alexander, D. M., Alvarez, M., Alves, O., Anand, A., Andrade, U., Armengaud, E., Avila, S., Aviles, A., Awan, H., Bailey, S., Baltay, C., Bault, A., Bautista, J., Behera, J., BenZvi, S., Beutler, F., Bianchi, D., Blake, C., Blum, R., Brieden, S., Brodzeller, A., Brooks, D., Buckley-Geer, E., Burtin, E., Calderon, R., Canning, R., Rosell, A. Carnero, Cereskaite, R., Cervantes-Cota, J. L., Chabanier, S., Chaussidon, E., Chaves-Montero, J., Chen, S., Chen, X., Claybaugh, T., Cole, S., Cuceu, A., Davis, T. M., Dawson, K., de la Cruz, R., de la Macorra, A., de Mattia, A., Deiosso, N., Dey, A., Dey, B., Ding, J., Ding, Z., Doel, P., Edelstein, J., Eftekharzadeh, S., Eisenstein, D. J., Elliott, A., Fagrelius, P., Fanning, K., Ferraro, S., Ereza, J., Findlay, N., Flaugher, B., Font-Ribera, A., Forero-Sánchez, D., Forero-Romero, J. E., Garcia-Quintero, C., Gaztañaga, E., Gil-Marín, H., Gontcho, S. Gontcho A, Gonzalez-Morales, A. X., Gonzalez-Perez, V., Gordon, C., Green, D., Gruen, D., Gsponer, R., Gutierrez, G., Guy, J., Hadzhiyska, B., Hahn, C., Hanif, M. M. S, Herrera-Alcantar, H. K., Honscheid, K., Howlett, C., Huterer, D., Iršič, V., Ishak, M., Juneau, S., Karaçayli, N. G., Kehoe, R., Kent, S., Kirkby, D., Kremin, A., Krolewski, A., Lai, Y., Lan, T. -W., Landriau, M., Lang, D., Lasker, J., Goff, J. M. Le, Guillou, L. Le, Leauthaud, A., Levi, M. E., Li, T. S., Linder, E., Lodha, K., Magneville, C., Manera, M., Margala, D., Martini, P., Maus, M., McDonald, P., Medina-Varela, L., Meisner, A., Mena-Fernández, J., Miquel, R., Moon, J., Moore, S., Moustakas, J., Mueller, E., Muñoz-Gutiérrez, A., Myers, A. D., Nadathur, S., Napolitano, L., Neveux, R., Newman, J. A., Nguyen, N. M., Nie, J., Niz, G., Noriega, H. E., Padmanabhan, N., Paillas, E., Palanque-Delabrouille, N., Pan, J., Penmetsa, S., Percival, W. J., Pieri, M. M., Pinon, M., Poppett, C., Porredon, A., Prada, F., Pérez-Fernández, A., Pérez-Ràfols, I., Rabinowitz, D., Raichoor, A., Ramírez-Pérez, C., Ramirez-Solano, S., Rashkovetskyi, M., Ravoux, C., Rezaie, M., Rich, J., Rocher, A., Rockosi, C., Roe, N. A., Rosado-Marin, A., Ross, A. J., Rossi, G., Ruggeri, R., Ruhlmann-Kleider, V., Samushia, L., Sanchez, E., Saulder, C., Schlafly, E. F., Schlegel, D., Schubnell, M., Seo, H., Sharples, R., Silber, J., Sinigaglia, F., Slosar, A., Smith, A., Sprayberry, D., Tan, T., Tarlé, G., Trusov, S., Vaisakh, R., Valcin, D., Valdes, F., Vargas-Magaña, M., Verde, L., Walther, M., Wang, B., Wang, M. S., Weaver, B. A., Weaverdyck, N., Wechsler, R. H., Weinberg, D. H., White, M., Yu, J., Yu, Y., Yuan, S., Yèche, C., Zaborowski, E. A., Zarrouk, P., Zhang, H., Zhao, C., Zhao, R., Zhou, R., and Zou, H.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present the measurement of Baryon Acoustic Oscillations (BAO) from the Lyman-$\alpha$ (Ly$\alpha$) forest of high-redshift quasars with the first-year dataset of the Dark Energy Spectroscopic Instrument (DESI). Our analysis uses over $420\,000$ Ly$\alpha$ forest spectra and their correlation with the spatial distribution of more than $700\,000$ quasars. An essential facet of this work is the development of a new analysis methodology on a blinded dataset. We conducted rigorous tests using synthetic data to ensure the reliability of our methodology and findings before unblinding. Additionally, we conducted multiple data splits to assess the consistency of the results and scrutinized various analysis approaches to confirm their robustness. For a given value of the sound horizon ($r_d$), we measure the expansion at $z_{\rm eff}=2.33$ with 2\% precision, $H(z_{\rm eff}) = (239.2 \pm 4.8) (147.09~{\rm Mpc} /r_d)$ km/s/Mpc. Similarly, we present a 2.4\% measurement of the transverse comoving distance to the same redshift, $D_M(z_{\rm eff}) = (5.84 \pm 0.14) (r_d/147.09~{\rm Mpc})$ Gpc. Together with other DESI BAO measurements at lower redshifts, these results are used in a companion paper to constrain cosmological parameters., Comment: This DESI Collaboration Key Publication is part of the 2024 publication series using the first year of observations (see https://data.desi.lbl.gov/doc/papers). Minor changes in v4, version accepted for publication in JCAP

Published
2024

8. Optimal Reconstruction of Baryon Acoustic Oscillations for DESI 2024

Author

Paillas, E., Ding, Z., Chen, X., Seo, H., Padmanabhan, N., de Mattia, A., Ross, A. J., Nadathur, S., Howlett, C., Aguilar, J., Ahlen, S., Alves, O., Andrade, U., Brooks, D., Buckley-Geer, E., Burtin, E., Chen, S., Claybaugh, T., Cole, S., Dawson, K., de la Macorra, A., Dey, Arjun, Doel, P., Fanning, K., Ferraro, S., Forero-Romero, J. E., Garcia-Quintero, C., Gaztañaga, E., Gil-Marín, H., Gontcho, S. Gontcho A, Gutierrez, G., Hahn, C., Hanif, M. M. S, Honscheid, K., Ishak, M., Kehoe, R., Kremin, A., Landriau, M., Guillou, L. Le, Levi, M. E., Manera, M., Martini, P., Medina-Varela, L., Meisner, A., Mena-Fernández, J., Miquel, R., Moustakas, J., Mueller, E., Muñoz-Gutiérrez, A., Myers, A. D., Newman, J. A., Nie, J., Niz, G., Palanque-Delabrouille, N., Percival, W. J., Poppett, C., Prada, F., Pérez-Fernández, A., Rashkovetskyi, M., Rezaie, M., Rosado-Marin, A., Rossi, G., Ruggeri, R., Sanchez, E., Saulder, C., Schlafly, E. F., Schlegel, D., Schubnell, M., Sprayberry, D., Tarlé, G., Valcin, D., Vargas-Magaña, M., Yu, J., Yuan, S., Zhou, R., and Zou, H.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Baryon acoustic oscillations (BAO) provide a robust standard ruler to measure the expansion history of the Universe through galaxy clustering. Density-field reconstruction is now a widely adopted procedure for increasing the precision and accuracy of the BAO detection. With the goal of finding the optimal reconstruction settings to be used in the DESI 2024 galaxy BAO analysis, we assess the sensitivity of the post-reconstruction BAO constraints to different choices in our analysis configuration, performing tests on blinded data from the first year of DESI observations (DR1), as well as on mocks that mimic the expected clustering and selection properties of the DESI DR1 target samples. Overall, we find that BAO constraints remain robust against multiple aspects in the reconstruction process, including the choice of smoothing scale, treatment of redshift-space distortions, fiber assignment incompleteness, and parameterizations of the BAO model. We also present a series of tests that DESI followed in order to assess the maturity of the end-to-end galaxy BAO pipeline before the unblinding of the large-scale structure catalogs., Comment: Supporting publication of DESI 2024 III: Baryon Acoustic Oscillations from Galaxies and Quasars

Published
2024

9. DESI 2024 III: Baryon Acoustic Oscillations from Galaxies and Quasars

Author

DESI Collaboration, Adame, A. G., Aguilar, J., Ahlen, S., Alam, S., Alexander, D. M., Alvarez, M., Alves, O., Anand, A., Andrade, U., Armengaud, E., Avila, S., Aviles, A., Awan, H., Bailey, S., Baltay, C., Bault, A., Behera, J., BenZvi, S., Beutler, F., Bianchi, D., Blake, C., Blum, R., Brieden, S., Brodzeller, A., Brooks, D., Buckley-Geer, E., Burtin, E., Calderon, R., Canning, R., Rosell, A. Carnero, Cereskaite, R., Cervantes-Cota, J. L., Chabanier, S., Chaussidon, E., Chaves-Montero, J., Chen, S., Chen, X., Claybaugh, T., Cole, S., Cuceu, A., Davis, T. M., Dawson, K., de la Macorra, A., de Mattia, A., Deiosso, N., Dey, A., Dey, B., Ding, Z., Doel, P., Edelstein, J., Eftekharzadeh, S., Eisenstein, D. J., Elliott, A., Fagrelius, P., Fanning, K., Ferraro, S., Ereza, J., Findlay, N., Flaugher, B., Font-Ribera, A., Forero-Sánchez, D., Forero-Romero, J. E., Garcia-Quintero, C., Gaztañaga, E., Gil-Marín, H., Gontcho, S. Gontcho A, Gonzalez-Morales, A. X., Gonzalez-Perez, V., Gordon, C., Green, D., Gruen, D., Gsponer, R., Gutierrez, G., Guy, J., Hadzhiyska, B., Hahn, C., Hanif, M. M. S, Herrera-Alcantar, H. K., Honscheid, K., Howlett, C., Huterer, D., Iršič, V., Ishak, M., Juneau, S., Karaçaylı, N. G., Kehoe, R., Kent, S., Kirkby, D., Kremin, A., Krolewski, A., Lai, Y., Lan, T. -W., Landriau, M., Lang, D., Lasker, J., Goff, J. M. Le, Guillou, L. Le, Leauthaud, A., Levi, M. E., Li, T. S., Linder, E., Lodha, K., Magneville, C., Manera, M., Margala, D., Martini, P., Maus, M., McDonald, P., Medina-Varela, L., Meisner, A., Mena-Fernández, J., Miquel, R., Moon, J., Moore, S., Moustakas, J., Mudur, N., Mueller, E., Muñoz-Gutiérrez, A., Myers, A. D., Nadathur, S., Napolitano, L., Neveux, R., Newman, J. A., Nguyen, N. M., Nie, J., Niz, G., Noriega, H. E., Padmanabhan, N., Paillas, E., Palanque-Delabrouille, N., Pan, J., Penmetsa, S., Percival, W. J., Pieri, M., Pinon, M., Poppett, C., Porredon, A., Prada, F., Pérez-Fernández, A., Pérez-Ràfols, I., Rabinowitz, D., Raichoor, A., Ramírez-Pérez, C., Ramirez-Solano, S., Rashkovetskyi, M., Rezaie, M., Rich, J., Rocher, A., Rockosi, C., Roe, N. A., Rosado-Marin, A., Ross, A. J., Rossi, G., Ruggeri, R., Ruhlmann-Kleider, V., Samushia, L., Sanchez, E., Saulder, C., Schlafly, E. F., Schlegel, D., Schubnell, M., Seo, H., Sharples, R., Silber, J., Slosar, A., Smith, A., Sprayberry, D., Swanson, J., Tan, T., Tarlé, G., Trusov, S., Vaisakh, R., Valcin, D., Valdes, F., Vargas-Magaña, M., Verde, L., Walther, M., Wang, B., Wang, M. S., Weaver, B. A., Weaverdyck, N., Wechsler, R. H., Weinberg, D. H., White, M., Yu, J., Yu, Y., Yuan, S., Yèche, C., Zaborowski, E. A., Zarrouk, P., Zhang, H., Zhao, C., Zhao, R., Zhou, R., and Zou, H.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present the DESI 2024 galaxy and quasar baryon acoustic oscillations (BAO) measurements using over 5.7 million unique galaxy and quasar redshifts in the range 0.1

Published
2024

10. Modeling the Temperature-Dependent Material Dispersion of Imidazolium-Based Ionic Liquids in the VIS-NIR

Author

Arosa, Y., Algnamat, B. S., D., Rodriguez Fernandez C., Lago, E. Lopez, Varela, L. M., and de la Fuente, R.

Subjects
Physics - Optics, Condensed Matter - Materials Science
Abstract

A thorough analysis of the refractive index of eleven 1-alkyl-3-methylimidazolium-based ionic liquids with three different anions, tetrafluoroborate bis(trifluoromethylsulfonyl)imide, and trifluoromethanesulfonate, is reported. Refractive indices were estimated, in the temperature interval from 298.15 to 323.15 K, using an Abbe refractometer to determine the value at the sodium D line and white light spectral interferometry to obtain dispersion in the range of wavelengths from 400 to 1000 nm. The first part of the manuscript is focused on the dependence of refractive index with wavelength, temperature, cation alkyl chain length, and anion nature. Once the main features are detailed, and in order to explain the experimental trends, a model for the refractive index is considered where its square is expressed by a single resonance Sellmeier dispersion formula. This formula has two coefficients: the first one identifies the position of the resonance in the spectral axis, and the second one specifies its strength. It was found that, for a given compound, the resonances position is independent of temperature, while the strength varies linearly with it. This model reproduces successfully the experimental data within the refractive index uncertainty. Furthermore, the model allows calculating the thermo-optic coefficient and its wavelength dependence., Comment: Accepted version, 28 pages, 9 figures, 1 table, the Supporting Information is available free of charge on the ACS Publications website at DOI: 10.1021/acs.jpcc.8b08971

Published
2024
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11. Non-additive electronic polarizabilities of ionic liquids: Charge delocalization effects

Author

Rodriguez-Fernandez, C. D., Lago, E. Lopez, Schroder, C., and Varela, L. M.

Subjects
Condensed Matter - Soft Condensed Matter, Physics - Optics
Abstract

Electronic charge delocalization on the molecular backbones of ionic liquid-forming ions substantially impacts their molecular polarizabilities. Density functional theory calculations of polarizabilities and volumes of many cations and anions are reported and applied to yield refractive indices of 1216 ionic liquids. A novel expression for the precise estimation of the molecular volumes of the ionic liquids from simulation data is also introduced, adding quadratic corrections to the usual sum of atomic volumes. Our significant findings include i) that the usual assumption of uniform, additive atomic polarizabilities is challenged when highly mobile electrons in conjugated systems are present, and ii) that cations with conjugated large carbon chains can be used together with anions for the design of ionic liquids with very high refractive indices. A novel relation for the polarizability volume is reported together with a refractive index map made up of the studied ionic liquids, Comment: 12 pages, 7 figures, 6 tables, Supplementary data associated with this article can be found, in the online version, at https://doi.org/10.1016/j.molliq.2021. 117099

Published
2024
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13. The Early Data Release of the Dark Energy Spectroscopic Instrument

Author

DESI Collaboration, Adame, A. G., Aguilar, J., Ahlen, S., Alam, S., Aldering, G., Alexander, D. M., Alfarsy, R., Prieto, C. Allende, Alvarez, M., Alves, O., Anand, A., Andrade-Oliveira, F., Armengaud, E., Asorey, J., Avila, S., Aviles, A., Bailey, S., Balaguera-Antolínez, A., Ballester, O., Baltay, C., Bault, A., Bautista, J., Behera, J., Beltran, S. F., BenZvi, S., Silva, L. Beraldo e, Bermejo-Climent, J. R., Berti, A., Besuner, R., Beutler, F., Bianchi, D., Blake, C., Blum, R., Bolton, A. S., Brieden, S., Brodzeller, A., Brooks, D., Brown, Z., Buckley-Geer, E., Burtin, E., Cabayol-Garcia, L., Cai, Z., Canning, R., Cardiel-Sas, L., Rosell, A. Carnero, Castander, F. J., Cervantes-Cota, J. L., Chabanier, S., Chaussidon, E., Chaves-Montero, J., Chen, S., Chen, X., Chuang, C., Claybaugh, T., Cole, S., Cooper, A. P., Cuceu, A., Davis, T. M., Dawson, K., de Belsunce, R., de la Cruz, R., de la Macorra, A., Della Costa, J., de Mattia, A., Demina, R., Demirbozan, U., DeRose, J., Dey, A., Dey, B., Dhungana, G., Ding, J., Ding, Z., Doel, P., Doshi, R., Douglass, K., Edge, A., Eftekharzadeh, S., Eisenstein, D. J., Elliott, A., Escoffier, S., Fagrelius, P., Fan, X., Fanning, K., Fawcett, V. A., Ferraro, S., Ereza, J., Flaugher, B., Font-Ribera, A., Forero-Sánchez, D., Forero-Romero, J. E., Frenk, C. S., Gänsicke, B. T., García, L. Á., García-Bellido, J., Garcia-Quintero, C., Garrison, L. H., Gil-Marín, H., Golden-Marx, J., Gontcho, S. Gontcho A, Gonzalez-Morales, A. X., Gonzalez-Perez, V., Gordon, C., Graur, O., Green, D., Gruen, D., Guy, J., Hadzhiyska, B., Hahn, C., Han, J. J., Hanif, M. M. S, Herrera-Alcantar, H. K., Honscheid, K., Hou, J., Howlett, C., Huterer, D., Iršič, V., Ishak, M., Jacques, A., Jana, A., Jiang, L., Jimenez, J., Jing, Y. P., Joudaki, S., Jullo, E., Juneau, S., Kizhuprakkat, N., Karaçaylı, N. G., Karim, T., Kehoe, R., Kent, S., Khederlarian, A., Kim, S., Kirkby, D., Kisner, T., Kitaura, F., Kneib, J., Koposov, S. E., Kovács, A., Kremin, A., Krolewski, A., L'Huillier, B., Lahav, O., Lambert, A., Lamman, C., Lan, T. -W., Landriau, M., Lang, D., Lange, J. U., Lasker, J., Leauthaud, A., Guillou, L. Le, Levi, M. E., Li, T. S., Linder, E., Lyons, A., Magneville, C., Manera, M., Manser, C. J., Margala, D., Martini, P., McDonald, P., Medina, G. E., Medina-Varela, L., Meisner, A., Mena-Fernández, J., Meneses-Rizo, J., Mezcua, M., Miquel, R., Montero-Camacho, P., Moon, J., Moore, S., Moustakas, J., Mueller, E., Mundet, J., Muñoz-Gutiérrez, A., Myers, A. D., Nadathur, S., Napolitano, L., Neveux, R., Newman, J. A., Nie, J., Nikutta, R., Niz, G., Norberg, P., Noriega, H. E., Paillas, E., Palanque-Delabrouille, N., Palmese, A., Zhiwei, P., Parkinson, D., Penmetsa, S., Percival, W. J., Pérez-Fernández, A., Pérez-Ràfols, I., Pieri, M., Poppett, C., Porredon, A., Pothier, S., Prada, F., Pucha, R., Raichoor, A., Ramírez-Pérez, C., Ramirez-Solano, S., Rashkovetskyi, M., Ravoux, C., Rocher, A., Rockosi, C., Ross, A. J., Rossi, G., Ruggeri, R., Ruhlmann-Kleider, V., Sabiu, C. G., Said, K., Saintonge, A., Samushia, L., Sanchez, E., Saulder, C., Schaan, E., Schlafly, E. F., Schlegel, D., Scholte, D., Schubnell, M., Seo, H., Shafieloo, A., Sharples, R., Sheu, W., Silber, J., Sinigaglia, F., Siudek, M., Slepian, Z., Smith, A., Soumagnac, M. T., Sprayberry, D., Stephey, L., Suárez-Pérez, J., Sun, Z., Tan, T., Tarlé, G., Tojeiro, R., Ureña-López, L. A., Vaisakh, R., Valcin, D., Valdes, F., Valluri, M., Vargas-Magaña, M., Variu, A., Verde, L., Walther, M., Wang, B., Wang, M. S., Weaver, B. A., Weaverdyck, N., Wechsler, R. H., White, M., Xie, Y., Yang, J., Yèche, C., Yu, J., Yuan, S., Zhang, H., Zhang, Z., Zhao, C., Zheng, Z., Zhou, R., Zhou, Z., Zou, H., Zou, S., and Zu, Y.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The Dark Energy Spectroscopic Instrument (DESI) completed its five-month Survey Validation in May 2021. Spectra of stellar and extragalactic targets from Survey Validation constitute the first major data sample from the DESI survey. This paper describes the public release of those spectra, the catalogs of derived properties, and the intermediate data products. In total, the public release includes good-quality spectral information from 466,447 objects targeted as part of the Milky Way Survey, 428,758 as part of the Bright Galaxy Survey, 227,318 as part of the Luminous Red Galaxy sample, 437,664 as part of the Emission Line Galaxy sample, and 76,079 as part of the Quasar sample. In addition, the release includes spectral information from 137,148 objects that expand the scope beyond the primary samples as part of a series of secondary programs. Here, we describe the spectral data, data quality, data products, Large-Scale Structure science catalogs, access to the data, and references that provide relevant background to using these spectra., Comment: 43 pages, 7 figures, 17 tables, accepted for publication in the Astronomical Journal

Published
2023
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14. Validation of the Scientific Program for the Dark Energy Spectroscopic Instrument

Author

DESI Collaboration, Adame, A. G., Aguilar, J., Ahlen, S., Alam, S., Aldering, G., Alexander, D. M., Alfarsy, R., Prieto, C. Allende, Alvarez, M., Alves, O., Anand, A., Andrade-Oliveira, F., Armengaud, E., Asorey, J., Avila, S., Aviles, A., Bailey, S., Balaguera-Antolínez, A., Ballester, O., Baltay, C., Bault, A., Bautista, J., Behera, J., Beltran, S. F., BenZvi, S., Silva, L. Beraldo e, Bermejo-Climent, J. R., Berti, A., Besuner, R., Beutler, F., Bianchi, D., Blake, C., Blum, R., Bolton, A. S., Brieden, S., Brodzeller, A., Brooks, D., Brown, Z., Buckley-Geer, E., Burtin, E., Cabayol-Garcia, L., Cai, Z., Canning, R., Cardiel-Sas, L., Rosell, A. Carnero, Castander, F. J., Cervantes-Cota, J. L., Chabanier, S., Chaussidon, E., Chaves-Montero, J., Chen, S., Chuang, C., Claybaugh, T., Cole, S., Cooper, A. P., Cuceu, A., Davis, T. M., Dawson, K., de Belsunce, R., de la Cruz, R., de la Macorra, A., de Mattia, A., Demina, R., Demirbozan, U., DeRose, J., Dey, A., Dey, B., Dhungana, G., Ding, J., Ding, Z., Doel, P., Doshi, R., Douglass, K., Edge, A., Eftekharzadeh, S., Eisenstein, D. J., Elliott, A., Escoffier, S., Fagrelius, P., Fan, X., Fanning, K., Fawcett, V. A., Ferraro, S., Ereza, J., Flaugher, B., Font-Ribera, A., Forero-Sánchez, D., Forero-Romero, J. E., Frenk, C. S., Gänsicke, B. T., García, L. Á., García-Bellido, J., Garcia-Quintero, C., Garrison, L. H., Gil-Marín, H., Golden-Marx, J., Gontcho, S. Gontcho A, Gonzalez-Morales, A. X., Gonzalez-Perez, V., Gordon, C., Graur, O., Green, D., Gruen, D., Guy, J., Hadzhiyska, B., Hahn, C., Han, J. J., Hanif, M. M. S, Herrera-Alcantar, H. K., Honscheid, K., Hou, J., Howlett, C., Huterer, D., Iršič, V., Ishak, M., Jana, A., Jiang, L., Jimenez, J., Jing, Y. P., Joudaki, S., Joyce, R., Jullo, E., Juneau, S., Kizhuprakkat, N., Karaçaylı, N. G., Karim, T., Kehoe, R., Kent, S., Khederlarian, A., Kim, S., Kirkby, D., Kisner, T., Kitaura, F., Kneib, J., Koposov, S. E., Kovács, A., Kremin, A., Krolewski, A., L'Huillier, B., Lahav, O., Lambert, A., Lamman, C., Lan, T. -W., Landriau, M., Lang, D., Lange, J. U., Lasker, J., Guillou, L. Le, Leauthaud, A., Levi, M. E., Li, T. S., Linder, E., Lyons, A., Magneville, C., Manera, M., Manser, C. J., Margala, D., Martini, P., McDonald, P., Medina, G. E., Medina-Varela, L., Meisner, A., Mena-Fernández, J., Meneses-Rizo, J., Mezcua, M., Miquel, R., Montero-Camacho, P., Moon, J., Moore, S., Moustakas, J., Mueller, E., Mundet, J., Muñoz-Gutiérrez, A., Myers, A. D., Nadathur, S., Napolitano, L., Neveux, R., Newman, J. A., Nie, J., Niz, G., Norberg, P., Noriega, H. E., Paillas, E., Palanque-Delabrouille, N., Palmese, A., Zhiwei, P., Parkinson, D., Penmetsa, S., Percival, W. J., Pérez-Fernández, A., Pérez-Ràfols, I., Pieri, M., Poppett, C., Porredon, A., Prada, F., Pucha, R., Raichoor, A., Ramírez-Pérez, C., Ramirez-Solano, S., Rashkovetskyi, M., Ravoux, C., Rocher, A., Rockosi, C., Ross, A. J., Rossi, G., Ruggeri, R., Ruhlmann-Kleider, V., Sabiu, C. G., Said, K., Saintonge, A., Samushia, L., Sanchez, E., Saulder, C., Schaan, E., Schlafly, E. F., Schlegel, D., Scholte, D., Schubnell, M., Seo, H., Shafieloo, A., Sharples, R., Sheu, W., Silber, J., Sinigaglia, F., Siudek, M., Slepian, Z., Smith, A., Sprayberry, D., Stephey, L., Suárez-Pérez, J., Sun, Z., Tan, T., Tarlé, G., Tojeiro, R., Ureña-López, L. A., Vaisakh, R., Valcin, D., Valdes, F., Valluri, M., Vargas-Magaña, M., Variu, A., Verde, L., Walther, M., Wang, B., Wang, M. S., Weaver, B. A., Weaverdyck, N., Wechsler, R. H., White, M., Xie, Y., Yang, J., Yèche, C., Yu, J., Yuan, S., Zhang, H., Zhang, Z., Zhao, C., Zheng, Z., Zhou, R., Zhou, Z., Zou, H., Zou, S., and Zu, Y.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The Dark Energy Spectroscopic Instrument (DESI) was designed to conduct a survey covering 14,000 deg$^2$ over five years to constrain the cosmic expansion history through precise measurements of Baryon Acoustic Oscillations (BAO). The scientific program for DESI was evaluated during a five month Survey Validation (SV) campaign before beginning full operations. This program produced deep spectra of tens of thousands of objects from each of the stellar (MWS), bright galaxy (BGS), luminous red galaxy (LRG), emission line galaxy (ELG), and quasar target classes. These SV spectra were used to optimize redshift distributions, characterize exposure times, determine calibration procedures, and assess observational overheads for the five-year program. In this paper, we present the final target selection algorithms, redshift distributions, and projected cosmology constraints resulting from those studies. We also present a `One-Percent survey' conducted at the conclusion of Survey Validation covering 140 deg$^2$ using the final target selection algorithms with exposures of a depth typical of the main survey. The Survey Validation indicates that DESI will be able to complete the full 14,000 deg$^2$ program with spectroscopically-confirmed targets from the MWS, BGS, LRG, ELG, and quasar programs with total sample sizes of 7.2, 13.8, 7.46, 15.7, and 2.87 million, respectively. These samples will allow exploration of the Milky Way halo, clustering on all scales, and BAO measurements with a statistical precision of 0.28% over the redshift interval $z<1.1$, 0.39% over the redshift interval $1.1

Published
2023
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15. The catalog-to-cosmology framework for weak lensing and galaxy clustering for LSST

Author

Prat, J., Zuntz, J., Omori, Y., Chang, C., Tröster, T., Pedersen, E., García-García, C., Phillips-Longley, E., Sanchez, J., Alonso, D., Fang, X., Gawiser, E., Heitmann, K., Ishak, M., Jarvis, M., Kovacs, E., Larsen, P., Mao, Y. -Y., Varela, L. Medina, Paterno, M., Vitenti, S. D., Zhang, Z., and Collaboration, The LSST Dark Energy Science

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present TXPipe, a modular, automated and reproducible pipeline for ingesting catalog data and performing all the calculations required to obtain quality-assured two-point measurements of lensing and clustering, and their covariances, with the metadata necessary for parameter estimation. The pipeline is developed within the Rubin Observatory Legacy Survey of Space and Time (LSST) Dark Energy Science Collaboration (DESC), and designed for cosmology analyses using LSST data. In this paper, we present the pipeline for the so-called 3x2pt analysis -- a combination of three two-point functions that measure the auto- and cross-correlation between galaxy density and shapes. We perform the analysis both in real and harmonic space using TXPipe and other LSST-DESC tools. We validate the pipeline using Gaussian simulations and show that it accurately measures data vectors and recovers the input cosmology to the accuracy level required for the first year of LSST data under this simplified scenario. We also apply the pipeline to a realistic mock galaxy sample extracted from the CosmoDC2 simulation suite (Korytov et al. 2019). TXPipe establishes a baseline framework that can be built upon as the LSST survey proceeds. Furthermore, the pipeline is designed to be easily extended to science probes beyond the 3x2pt analysis., Comment: 20+11 pages, 10+11 figures. Version accepted in The Open Journal of Astrophysics

Published
2022
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16. Surgical Treatment for Floating Right Heart Thrombus in High Risk Patients

Author

Redondo Ana, Miguelena J, Martín M, Varela L, Fajardo E, López J, Muñoz R, and Rodríguez-Roda J

Subjects
right heart thrombus, surgical embolectomy, Medicine, Diseases of the circulatory (Cardiovascular) system, RC666-701
Abstract

Right heart floating thrombus or “embolus in transit” can be a very dangerous condition, usually associated to pulmonary thromboembolism. Even though many treatment options have been considered, nowadays, the recommended approach remains unclear. Surgical embolectomy has been used as an option, usually less preferred than thrombolysis or percutaneous approach, but it can be a safe and effective procedure in patients with high risk of embolization.

Published
2017
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20. POS1368 GENDER AS A KEY FACTOR OF DELAY IN PRESCRIBING THE FIRST BIOLOGIC OR TARGETED SYNTHETIC DRUG IN PATIENTS WITH RHEUMATOID ARTHRITIS. DATA FROM BIOBADASER 3.0 REGISTRY

Author

Vela Casasempere, P., primary, Otero-Varela, L., additional, Gómez, S., additional, Caño, R., additional, Campos Fernández, C., additional, Calvo-Gutiérrez, J., additional, Perez-Vera, Y., additional, Manrique-Arija, S., additional, Bustabad Reyes, S., additional, Manero Ruiz, F. J., additional, Ruiz-Montesino, D., additional, Ruiz, L., additional, Mera Varela, A., additional, Moreno, M., additional, Sánchez-Alonso, F., additional, and Castrejon, I., additional

Published
2024
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25. Current real-world evidence of genetic testing diagnostic yield in a large cohort of long QT syndrome

Author

Brogger, M, primary, Cazon Varela, L, additional, De La Higuera Romero, L, additional, Cabrera Argana, D, additional, Fernandez Fernandez, X, additional, Amor Salamanca, A, additional, Cardenas Reyes, I, additional, Garcia Hernandez, S, additional, Valverde Gomez, M, additional, Peteiro Deben, R, additional, Gomez Diaz, I, additional, Perez Barbeito, M, additional, Sanchez Flores, M, additional, Ortiz, M, additional, and Ochoa, J P, additional

Published
2024
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26. Contribution of clinically relevant copy number variations in long QT syndrome: a large cohort study

Author

Brogger, M, primary, Cazon Varela, L, additional, De La Higuera Romero, L, additional, Cabrera Argana, D, additional, Fernandez Fernandez, X, additional, Garcia Hernandez, S, additional, Cardenas Reyes, I, additional, Valverde Gomez, M, additional, Amor Salamanca, A, additional, Perez Barbeito, M, additional, Gomez Diaz, I, additional, Peteiro Deben, R, additional, Sanchez Flores, M, additional, Ortiz, M, additional, and Ochoa, J P, additional

Published
2024
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28. Area-Wide Eradication of the Invasive European Grapevine Moth Lobesia botrana in California, USA

Author

Simmons, G. S., primary, Varela, L., additional, Daugherty, M., additional, Cooper, M., additional, Lance, D., additional, Mastro, V., additional, Carde, R. T., additional, Lucchi, A., additional, Ioriatti, C., additional, Bagnoli, B., additional, Steinhauer, R., additional, Broadway, R., additional, Smith, B. Stone, additional, Hoffman, K., additional, Clark, G., additional, Whitmer, D., additional, and Johnson, R., additional

Published
2021
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29. Founder effect of a pathogenic TNNT2 variant in the northwest of Spain responsible for a non-severe phenotype of hypertrophic cardiomyopathy

Author

Valverde, M, primary, Peteiro-Deben, R P D, additional, Maneiro, E M, additional, Garcia-Hernandez, S G H, additional, Amor-Salamanca, A M S, additional, Cardenas-Reyes, I C R, additional, Barriales-Villa, R B V, additional, Larranaga-Moreira, J M L M, additional, Cabrera Argana, D C A, additional, Fernandez Fernandez, X F F, additional, Gomez Diaz, I G D, additional, Perez Barbeito, M P B, additional, Cazon Varela, L C V, additional, Ortiz Genga, M O G, additional, and Ochoa, J P O, additional

Published
2023
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30. Contribution of copy number variants to the genetic etiology of dilated cardiomyopathy

Author

Cardenas Reyes, I, primary, Gomez Diaz, I, additional, De La Higuera Romero, L, additional, Amor Salamanca, A, additional, Garcia Hernandez, S, additional, Valverde Gomez, M, additional, Cabrera Argana, D, additional, Fernandez Fernandez, X, additional, Ortiz Genga, M, additional, Cazon Varela, L, additional, Perez Barbeito, M, additional, Peteiro Deben, R, additional, Sanchez Flores, M, additional, and Ochoa, J P, additional

Published
2023
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31. Meteorin-like plasma levels as a novel biomarker for heart failure

Author

Anido Varela, L, primary, Aragon-Herrera, A, additional, Tarazon, E, additional, Sole-Gonzalez, E, additional, Martinez-Selles, M, additional, Guerra-Ramos, J M, additional, Carrasquer, A, additional, Moran-Fernandez, L, additional, Feijoo-Bandin, S, additional, Morana-Fernandez, S, additional, Gonzalez Maestro, A, additional, Garcia-Vega, D, additional, Portoles, M, additional, Lago-Paz, F, additional, and Gonzalez-Juanatey, J R, additional

Published
2023
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32. Genotipe-phenotype correlation in alpk3 null variants. an extended analysis

Author

Garcia Hernandez, S, primary, De La Higuera Romero, L, additional, Fernandez, X, additional, Perez Barbeito, M, additional, Cazon Varela, L, additional, Peteiro Deben, R, additional, Gomez Diaz, I, additional, Valverde Gomez, M, additional, Amor Salamanca, A, additional, Cardenas, I, additional, Sanchez Flores, M, additional, Cabrera, D, additional, Ortiz-Genga, M, additional, and Ochoa, J P, additional

Published
2023
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33. Microcanonical equations for the Tsallis entropy

Author

Carrete, J., Varela, L. M., and Gallego, L. J.

Subjects
Condensed Matter - Statistical Mechanics
Abstract

Microcanonical equations for several thermodynamic properties of a system, suitable for molecular dynamics simulations, are derived from the nonextensive Tsallis entropy functional. Two possible definitions of temperature, the usual one and a ``physical'' modification which satisfies the zeroth law of thermodynamics, are considered, and the results from both choices are compared. Results for the ideal gas using the first definition of temperature are provided and discussed in relation with the canonical results reported in the literature. The second choice leaves most formulae unchanged from their extensive (Shannon-Boltzmann-Gibbs) form.

Published
2008
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34. Non-equilibrium nanothermodynamics

Author

Carrete, J., Varela, L. M., and Gallego, L. J.

Subjects
Condensed Matter - Statistical Mechanics
Abstract

Entropy production for a system not in the thermodynamic limit is formulated using Hill's nanothermodynamics, in which a macroscopic ensemble of such systems is considered. External influence of the environment on the average nanosystem is connected to irreversible work with an explicit formula based on Jarzynsky equality. Entropy production retains its usual form as a sum of products of fluxes and forces and Onsager's symmetry principle is proven to hold for the average nanosystem if it is valid for the macroscopic ensemble, by two methods. The first one provides expressions that relate the coefficients of the two systems. The second gives a general condition for a system under a external force to preserve Onsager's symmetry., Comment: 9 pages

Published
2007
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35. POS0281 SAFETY OF BIOSIMILARS THERAPIES FOR THE TREATMENT OF JUVENILE IDIOPATHIC ARTHRITIS: RESULTS FROM THE SPANISH REGISTRY OF ADVERSE EVENTS WITH BIOLOGIC THERAPIES (BIOBADASER)

Author

Bethencourt Baute, J. J., primary, Otero-Varela, L., additional, Manero Ruiz, F. J., additional, Perez-Pampín, E., additional, Rodríguez-Lozano, C., additional, Manrique Arija, S., additional, Bustabad, S., additional, Fernández-López, C., additional, Ruiz Montesinos, D., additional, Mateo, L., additional, Martín-Domenech, R., additional, Moreno, M., additional, Sánchez-Alonso, F., additional, and Catrejón, I., additional

Published
2023
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36. AB0202 CHARACTERISTICS OF PATIENTS WITH DIFFICULT-TO-TREAT RHEUMATOID ARTHRITIS IN REAL LIFE: DATA FROM THE BIOBADASER REGISTRY

Author

Rodríguez-Merlos, P., primary, Otero-Varela, L., additional, Montero, F., additional, Manero Ruiz, F. J., additional, Vela-Casasempere, P., additional, Campos Fernández, C., additional, Manrique Arija, S., additional, Rodríguez-Lozano, C., additional, Martínez González, O., additional, Calvo Gutierrez, J., additional, Campos Esteban, J., additional, Sueiro Delgado, D., additional, Sánchez-Alonso, F., additional, and Castrejon, I., additional

Published
2023
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37. POS0638 SURVIVAL OF BIOSIMILAR ANTI-TNFΑ BLOCKERS COMPARED TO ORIGINATOR MOLECULES IN RHEUMATOLOGY: RESULTS FROM THE BIOBADASER COHORT

Author

Martínez-Vidal, M. P., primary, Fernández-Carballido, C., additional, Otero-Varela, L., additional, Manero Ruiz, F. J., additional, Rodríguez-Lozano, C., additional, Manrique Arija, S., additional, Campos Fernández, C., additional, Jovani, V., additional, Expósito, L., additional, Colazo, M., additional, García-González, J., additional, Sánchez-Alonso, F., additional, and Castrejon, I., additional

Published
2023
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38. POS0249 SEX DIFFERENCES IN PATIENT-REPORTED OUTCOMES IN AXIAL SPONDYLOARTHRITIS PATIENTS TREATED WITH TUMOR NECROSIS FACTOR INHIBITORS: RESULTS FROM A MULTINATIONAL OBSERVATIONAL COHORT STUDY

Author

Hellamand, P., primary, Van de Sande, M. G. H., additional, Nurmohamed, M. T., additional, Van Vollenhoven, R., additional, Hollick, R., additional, Rotariu, O., additional, Rotar, Z., additional, Pirkmajer, K., additional, Nordström, D., additional, Hokkanen, A. M., additional, Michelsen, B., additional, Kvien, T. K., additional, Glintborg, B., additional, Loft, A. G., additional, Pavelka, K., additional, Zavada, J., additional, Castrejon, I., additional, Otero-Varela, L., additional, Gudbjornsson, B., additional, Palsson, O., additional, Østergaard, M., additional, Hetland, M. L., additional, Wallman, J. K., additional, DI Giuseppe, D., additional, Ciurea, A., additional, Nissen, M. J., additional, Demirci Yildirim, T., additional, Onen, F., additional, Codreanu, C., additional, Mogosan, C., additional, Santos, M. J., additional, Vieira-Sousa, E., additional, Iannone, F., additional, Lapadula, G., additional, Midtbøll Ørnbjerg, L., additional, Twisk, J., additional, and Van der Horst-Bruinsma, I., additional

Published
2023
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39. POS1073 IMPACT OF COMORBIDITIES ON THE FIRST BDMARD EFFECTIVENESS AND RETENTION RATE AFTER 2 YEARS OF FOLLOW-UP IN PATIENTS WITH RHEUMATOID ARTHRITIS. DATA FROM THE SPANISH REGISTRY BIOBADASER

Author

Calvo Gutierrez, J., primary, López-Medina, C., additional, Otero-Varela, L., additional, Escudero Contreras, A., additional, Ortega Castro, R., additional, Ladehesa Pineda, M. L., additional, Campos Fernández, C., additional, Bernabéu, P., additional, Bohórquez, C., additional, García Dorta, A., additional, Ruiz-Montesinos, D., additional, Pombo-Suarez, M., additional, Ros, I., additional, Sánchez-Alonso, F., additional, and Castrejon, I., additional

Published
2023
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42. A Model for B2B Supplier Selection

Author

Campanella, G., Ribeiro, R. A., Varela, L. R., Kacprzyk, Janusz, editor, Melo-Pinto, Pedro, editor, Couto, Pedro, editor, Serôdio, Carlos, editor, Fodor, János, editor, and De Baets, Bernard, editor

Published
2012
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43. Empagliflozin treatment differentially modifies visceral and subcutaneous adipose tissue lipidomes and pro-inflammatory cytokines in zucker fatty diabetic rats

Author

Morana-Fernandez, S, primary, Aragon-Herrera, A, additional, Otero-Santiago, M, additional, Anido-Varela, L, additional, Tarazon, E, additional, Portoles, M, additional, Rosello-Lleti, E, additional, Comella, F, additional, Gonzalez-Juanatey, J R, additional, Feijoo-Bandin, S, additional, and Lago, F, additional

Published
2022
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44. Narrowing Beta-myosin hot spots in its association with hypertrophic cardiomyopathy

Author

Garcia Hernandez, S, primary, De La Higuera Romero, L, additional, Fernandez, X, additional, Valverde Gomez, M, additional, Cazon Varela, L, additional, Peteiro Deben, R, additional, Rebolo, P, additional, Sanluis Verdes, A, additional, Cardenas, I, additional, Ortiz-Genga, M, additional, Amor Salamanca, A, additional, Perez Barbeito, M, additional, Gomez Diaz, I, additional, Sanchez Flores, M, additional, and Ochoa, J P, additional

Published
2022
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47. Rehabilitation after Minimally Invasive Surgery

Author

Baerga-Varela, L., Malanga, G. A., Hozack, William J., editor, Krismer, Martin, editor, Nogler, Michael, editor, Bonutti, Peter M., editor, Rachbauer, Franz, editor, Schaffer, Jonathan L., editor, and Donnelly, William J., editor

Published
2004
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50. The Treatment With the SGLT2 Inhibitor Empagliflozin Modifies the Hepatic Metabolome of Male Zucker Diabetic Fatty Rats Towards a Protective Profile

Author

Aragón-Herrera A, Otero-Santiago M, Anido-Varela L, Moraña-Fernández S, Campos-Toimil M, García-Caballero T, Barral L, Tarazón E, Roselló-Lletí E, Portolés M, Gualillo O, Moscoso I, Lage R, González-Juanatey JR, Feijóo-Bandín S, and Lago F

Subjects
diabetes, empagliflozin, inflammation, liver, metabolome
Abstract

The EMPA-REG OUTCOME (Empagliflozin, Cardiovascular Outcome Event Trial in patients with Type 2 Diabetes Mellitus (T2DM)) trial evidenced the potential of sodium-glucose cotransporter 2 (SGLT2) inhibitors for the treatment of patients with diabetes and cardiovascular disease. Recent evidences have shown the benefits of the SGLT2 inhibitor empagliflozin on improving liver steatosis and fibrosis in patients with T2DM. Metabolomic studies have been shown to be very useful to improve the understanding of liver pathophysiology during the development and progression of metabolic hepatic diseases, and because the effects of empagliflozin and of other SGLT2 inhibitors on the complete metabolic profile of the liver has never been analysed before, we decided to study the impact on the liver of male Zucker diabetic fatty (ZDF) rats of a treatment for 6 weeks with empagliflozin using an untargeted metabolomics approach, with the purpose to help to clarify the benefits of the use of empagliflozin at hepatic level. We found that empagliflozin is able to change the hepatic lipidome towards a protective profile, through an increase of monounsaturated and polyunsaturated glycerides, phosphatidylcholines, phosphatidylethanolamines, lysophosphatidylinositols and lysophosphatidylcholines. Empagliflozin also induces a decrease in the levels of the markers of inflammation IL-6, chemerin and chemerin receptor in the liver. Our results provide new evidences regarding the molecular pathways through which empagliflozin could exert hepatoprotector beneficial effects in T2DM.

Published
2022

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