Enrique Gaztanaga

Summary

My expertise is in the area of Cosmological models and the Large Scale Structure (LSS): the distribution of galaxies, radiation and matter on the largest observable scales. In particular: i) how light from galaxies traces the underlaying mass: theory, measurements and simulations ii) comparison of perturbation theory to data and simulations: development of novel tools, iii) measurement and modelling of Galaxy-CMB cross-correlation techniques iv) measurements and modelling of higher order correlation function and Baryon Acoustic Oscillations (BAO), v) interpretation of cosmological models and the laws of Physics.

Research outputs

2026

A new way to discover strong gravitational lenses: Pair-wise Spectroscopic Search from DESI DR1

Hsu, Y., Huang, X., Storfer, C. J., Inchausti, J. C., Schlegel, D., Moustakas, J., Aguilar, J., Ahlen, S., Anand, A., Bianchi, D., Brooks, D., Castander, F. J., Claybaugh, T., Cuceu, A., Macorra, A. d. l., Costa, J. D., Dey, A., Dey, B., Doel, P., Forero-Romero, J. E., Gaztañaga, E., Gontcho, S. G. A., Gutierrez, G., Huterer, D., Joyce, R., Kehoe, R., Kirkby, D., Kisner, T., Kremin, A., Lahav, O., Landriau, M., Guillou, L. L., Manera, M., Meisner, A., Miquel, R., Nadathur, S., Palanque-Delabrouille, N., Percival, W. J., Prada, F., Pérez-Ràfols, I., Rossi, G., Sanchez, E., Schubnell, M., Silber, J., Sprayberry, D., Tarlé, G., Weaver, B. A., Zhou, R., Zou, H.

23 Jan 2026, In: The Astrophysical Journal. 282, 19p., 41

Research output: Article

Validation of the DESI DR2 Lyα BAO analysis using synthetic datasets

Casas, L., Herrera-Alcantar, H. K., Chaves-Montero, J., Cuceu, A., Font-Ribera, A., Lokken, M., Karim, M. A., Ramírez-Pérez, C., Aguilar, J., Ahlen, S., Andrade, U., Armengaud, E., Aviles, A., BenZvi, S., Bianchi, D., Brodzeller, A., Brooks, D., Canning, R., Rosell, A. C., Charles, M., Chaussidon, E., Claybaugh, T., Dawson, K. S., Macorra, A. d. l., de Mattia, A., Dey, A., Dey, B., Ding, Z., Doel, P., Eisenstein, D. J., Elbers, W., Ferraro, S., Forero-Romero, J. E., Garcia-Quintero, C., Garrison, L. H., Gaztañaga, E., Gil-Marín, H., Gontcho, S. G. A., Gonzalez-Morales, A. X., Gordon, C., Gutierrez, G., Guy, J., Herbold, M., Honscheid, K., Howlett, C., Huterer, D., Manera, M., Nadathur, S., Percival, W. J., Pieri, M. M.

16 Jan 2026, In: Physical Review D. 113, 2, 24p., 023520

Research output: Article

Identifying Anomalous DESI Galaxy Spectra with a Variational Autoencoder

Nicolaou, C., Nathan, R. P., Lahav, O., Palmese, A., Saintonge, A., Aguilar, J., Ahlen, S., Prieto, C. A., BenZvi, S., Bianchi, D., Brodzeller, A., Brooks, D., Claybaugh, T., Macorra, A. d. l., Costa, J. D., Dey, A., Doel, P., Forero-Romero, J. E., Gaztañaga, E., Gontcho, S. G. A., Gutierrez, G., Honscheid, K., Howlett, C., Ishak, M., Kehoe, R., Kirkby, D., Kisner, T., Kremin, A., Lambert, A., Landriau, M., Guillou, L. L., Meisner, A., Miquel, R., Moustakas, J., Nadathur, S., Prada, F., Pérez-Ràfols, I., Rossi, G., Sanchez, E., Schubnell, M., Siudek, M., Sprayberry, D., Tarlé, G., Weaver, B. A., Zou, H.

7 Jan 2026, In: Monthly Notices of the Royal Astronomical Society

Research output: Article

The Compilation and Validation of the Spectroscopic Redshift Catalogs for the DESI-COSMOS and DESI-XMMLSS Fields

Ratajczak, J., Dawson, K. S., Weaverdyck, N., Aguilar, J., Ahlen, S., Armengaud, E., Bianchi, D., Blanco, D., Brodzeller, A., Brooks, D., Castander, F. J., Claybaugh, T., Cuceu, A., Macorra, A. d. l., Dey, B., Doel, P., Font-Ribera, A., Forero-Romero, J. E., Gaztañaga, E., Gontcho, S. G. A., Gutierrez, G., Guy, J., Hagen, T., Herrera-Alcantar, H. K., Honscheid, K., Huterer, D., Ishak, M., Jimenez, J., Joyce, R., Juneau, S., Kehoe, R., Kirkby, D., Kisner, T., Koposov, S. E., Kremin, A., Lahav, O., Lambert, A., Lamman, C., Landriau, M., Guillou, L. L., Leauthaud, A., Levi, M. E., Li, Q., Longhurst, I., Luo, Y., Manera, M., Martini, P., McCullough, J., Nadathur, S., Percival, W. J.

6 Jan 2026, In: The Astrophysical Journal. 171, 2, 37p., 71

Research output: Article

Modelling the impact of quasar redshift errors on the full-shape analysis of correlations in the Lyman-α forest

Gordon, C., Cuceu, A., Font-Ribera, A., Herrera-Alcantar, H. K., Aguilar, J. N., Ahlen, S., Bianchi, D., Brooks, D., Claybaugh, T., Cole, S., Macorra, A. d. l., Dey, B., Doel, P., Forero-Romero, J. E., Gaztañaga, E., Gontcho, S. G. A., Gutierrez, G., Guy, J., Honscheid, K., Ishak, M., Kehoe, R., Kirkby, D., Kisner, T., Kremin, A., Landriau, M., Guillou, L. L., Levi, M., Manera, M., Martini, P., Miquel, R., Moustakas, J., Nadathur, S., Niz, G., Palanque-Delabrouille, N., Percival, W., Prada, F., Pérez-Ràfols, I., Rossi, G., Sanchez, E., Schlegel, D., Schubnell, M., Seo, H., Silber, J. H., Sprayberry, D., Tarlé, G., Weaver, B. A., Zhou, R., Zou, H.

1 Jan 2026, In: Monthly Notices of the Royal Astronomical Society, 19p., staf2035

Research output: Article

2025

The Lyman-α Forest from LBGs: First 3D Correlation Measurement with DESI and Prospects for Cosmology

Herrera-Alcantar, H. K., Armengaud, E., Yèche, C., Gordon, C., Casas, L., Font-Ribera, A., Magneville, C., Ravoux, C., Aguilar, J., Ahlen, S., Anand, A., Brooks, D., Chaussidon, E., Claybaugh, T., Cuceu, A., Dawson, K. S., Macorra, A. d. l., Doel, P., Ferraro, S., Forero-Romero, J. E., Gaztañaga, E., Gontcho, S. G. A., Gonzalez-Morales, A. X., Gutierrez, G., Guy, J., Hahn, C., Kirkby, D., Kremin, A., Lahav, O., Lambert, A., Landriau, M., Guillou, L. L., Manera, M., Martini, P., Meisner, A., Miquel, R., Muñoz-Gutiérrez, A., Nadathur, S., Palanque-Delabrouille, N., Percival, W. J., Prada, F., Pérez-Ràfols, I., Rossi, G., Sanchez, E., Schlegel, D., Schubnell, M., Silber, J., Sprayberry, D., Tarlé, G., Weaver, B. A.

22 Dec 2025, In: Journal of Cosmology and Astroparticle Physics. 2025, 12, 38p., 053

Research output: Article

DESI Spectroscopy of HETDEX Emission-line Candidates I: Line Discrimination Validation

Landriau, M., Cooper, E. M., Davis, D., Gebhardt, K., Ciardullo, R., Armengaud, É., Dey, A., Raichoor, A., Schlegel, D. J., Aguilar, J., Ahlen, S., Bianchi, D., Brooks, D., Claybaugh, T., Macorra, A. d. l., Ferraro, S., Forero-Romero, J. E., Gaztañaga, E., Gontcho, S. G. A., Gutierrez, G., Hahn, C., Honscheid, K., Howlett, C., Ishak, M., Juneau, S., Kehoe, R., Kisner, T., Kremin, A., Guillou, L. L., Levi, M. E., Manera, M., Meisner, A., Miquel, R., Moustakas, J., Nadathur, S., Pérez-Ràfols, I., Poppett, C., Prada, F., Rossi, G., Sanchez, E., Schubnell, M., Sprayberry, D., Tarlé, G., Weaver, B. A., Zhou, R., Zou, H., Farrow, D. J., Hill, G. J., Jeong, D., Liu, C.

19 Dec 2025, In: The Astrophysical Journal. 995, 2, 13p., 220

Research output: Article

Euclid preparation: LXXVI. Simulating thousands of Euclid spectroscopic skies

Collaboration, E., Monaco, P., Parimbelli, G., Elkhashab, M. Y., Salvalaggio, J., Castro, T., Lepinzan, M. D., Sarpa, E., Sefusatti, E., Stanco, L., Tornatore, L., Addison, G. E., Bruton, S., Carbone, C., Castander, F. J., Carretero, J., Torre, S. d. l., Fosalba, P., Lavaux, G., Markovic, K., McCarthy, K. S., Passalacqua, F., Percival, W. J., Risso, I., Scarlata, C., Tallada-Crespí, P., Viel, M., Altieri, B., Andreon, S., Auricchio, N., Baccigalupi, C., Baldi, M., Bardelli, S., Battaglia, P., Bernardeau, F., Biviano, A., Branchini, E., Brescia, M., Brinchmann, J., Camera, S., Cañas-Herrera, G., Capobianco, V., Cardone, V. F., Casas, S., Castellano, M., Avila, S., Gaztanaga, E., Joudaki, S., Nadathur, S., Naidoo, K.

17 Dec 2025, In: Astronomy and Astrophysics. 704, 19p., A306

Research output: Article

Study of the Connected Four-Point Correlation Function of Galaxies from DESI Data Release 1 Luminous Red Galaxy Sample

Hou, J., Cahn, R. N., Aguilar, J., Ahlen, S., Bianchi, D., Brooks, D., Claybaugh, T., Doel, P., Ferraro, S., Forero-Romero, J. E., Gaztañaga, E., Guillou, L. L., Gutierrez, G., Honscheid, K., Huterer, D., Ishak, M., Joyce, R., Juneau, S., Kehoe, R., Kirkby, D., Kisner, T., Kremin, A., Lamman, C., Landriau, M., Macorra, A. d. l., Manera, M., de Mattia, A., Miquel, R., Mueller, E., Nadathur, S., Niz, G., Percival, W. J., Prada, F., Pérez-Ràfols, I., Ross, A. J., Rossi, G., Sanchez, E., Schlegel, D., Schubnell, M., Seo, H., Silber, J., Slepian, Z., Sprayberry, D., Tarlé, G., Weaver, B. A., Zou, H.

15 Dec 2025, In: Physical Review D. 112, 25p., 122005

Research output: Article

Galaxy-Multiplet Clustering from DESI DR2

Wang, H., Eisenstein, D. J., Aguilar, J. N., Ahlen, S., Bianchi, D., Brooks, D., Claybaugh, T., Macorra, A. d. l., Dey, A., Dey, B., Doel, P., Ferraro, S., Font-Ribera, A., Forero-Romero, J. E., Gaztañaga, E., Gutierrez, G., Honscheid, K., Ishak, M., Joyce, R., Juneau, S., Kirkby, D., Kisner, T., Kremin, A., Lahav, O., Lamman, C., Landriau, M., Manera, M., Meisner, A., Miquel, R., Mueller, E., Nadathur, S., Niz, G., Palanque-Delabrouille, N., Percival, W. J., Prada, F., Pérez-Ràfols, I., Ross, A. J., Rossi, G., Sanchez, E., Schlegel, D., Schubnell, M., Silber, J. H., Sprayberry, D., Tarlé, G., Weaver, B. A., Zhou, R., Zou, H.

2 Dec 2025, In: Monthly Notices of the Royal Astronomical Society

Research output: Article

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Professor Enrique Gaztanaga

Summary

Research outputs

2026

2025