Enrique Gaztanaga | University of Portsmouth

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

The backup program of the Dark Energy Spectroscopic Instrument's Milky Way Survey

Dey, A., Koposov, S. E., Najita, J. R., Gänsicke, B. T., Myers, A. D., Raichoor, A., Eisenstein, D. J., Schlafly, E. F., Prieto, C. A., Silva, L. B. e., Li, T. S., Valluri, M., Juneau, S., Lambert, M., Thomas, G. F., Wang, W., Riley, A. H., Kizhuprakkat, N., Aguilar, J., Ahlen, S., Bianchi, D., Brooks, D., Claybaugh, T., Cuceu, A., Macorra, A. d. l., Costa, J. D., Dey, B., Doel, P., Font-Ribera, A., Forero-Romero, J. E., Gaztañaga, E., Gontcho, S. G. A., Gutierrez, G., Guy, J., Hahn, C., Honscheid, K., Ishak, M., Jimenez, J., Kehoe, R., Kirkby, D., Kisner, T., Kremin, A., Lamman, C., Landriau, M., Guillou, L. L., Levi, M. E., Manera, M., Martini, P., Nadathur, S., Percival, W. J.

13 May 2026, In: The Astronomical Journal. 171, 6, 16p., 348

Research output: Article

Extensive analysis of reconstruction algorithms for DESI 2024 baryon acoustic oscillations

Chen, X., Ding, Z., Paillas, E., Nadathur, S., Seo, H., Chen, S., Padmanabhan, N., White, M., Mattia, A. d., McDonald, P., Ross, A. J., Variu, A., Rosell, A. C., Hadzhiyska, B., Hanif, M. M. S., Forero-Sánchez, D., Ahlen, S., Alves, O., Andrade, U., BenZvi, S., Bianchi, D., Brooks, D., Chaussidon, E., Claybaugh, T., Macorra, A. d. l., Dey, B., Fanning, K., Ferraro, S., Font-Ribera, A., Forero-Romero, J. E., Garcia-Quintero, C., Gaztañaga, E., Gontcho, S. G. A., Gutierrez, G., Hahn, C., Honscheid, K., Juneau, S., Kehoe, R., Kirkby, D., Kisner, T., Kremin, A., Levi, M. E., Meisner, A., Mena-Fernández, J., Miquel, R., Moustakas, J., Muñoz-Gutiérrez, A., Nikakhtar, F., Percival, W. J., Ruggeri, R.

5 May 2026, In: Journal of Cosmology and Astroparticle Physics. 2026, 05, 58p., 001

Research output: Article

Probing the limits of cosmological information from the Lyman-α forest 2-point correlation functions

Turner, W., Cuceu, A., Martini, P., Aguilar, J., Ahlen, S., Anand, A., Bianchi, D., Brooks, D., Casas, L., Claybaugh, T., Macorra, A. d. l., Dey, B., Doel, P., Ferraro, S., Font-Ribera, A., Forero-Romero, J. E., Gaztañaga, E., Gontcho, S. G. A., Gutierrez, G., Herrera-Alcantar, H. K., Honscheid, K., Ishak, M., Joyce, R., Kehoe, R., Kirkby, D., Kremin, A., Lahav, O., Landriau, M., Guillou, L. L., Manera, M., Miquel, R., Muñoz-Gutiérrez, A., Nadathur, S., Niz, G., Palanque-Delabrouille, N., Percival, W. J., Poppett, C., Prada, F., Ross, A. J., Rossi, G., Sanchez, E., Schlegel, D., Schubnell, M., Seo, H., Silber, J., Sprayberry, D., Tarlé, G., Walther, M., Weaver, B. A., Zhou, R.

5 May 2026, In: Journal of Cosmology and Astroparticle Physics. 2026, 05, 33p., 010

Research output: Article

Euclid structural-thermal-optical performance

Collaboration, E., Anselmi, A., Laureijs, R., Racca, G. D., Costa, G., Mifsud, L. C., Cuillandre, J. -., Gottero, M., Hoekstra, H., Kuijken, K., Mareschi, V., Miller, L., Mottini, S., Stramaccioni, D., Altieri, B., Amara, A., Andreon, S., Auricchio, N., Baccigalupi, C., Baldi, M., Balestra, A., Bardelli, S., Bender, R., Biviano, A., Branchini, E., Brescia, M., Camera, S., Canas-Herrera, G., Capobianco, V., Carbone, C., Carretero, J., Castellano, M., Castignani, G., Cavuoti, S., Cimatti, A., Colodro-Conde, C., Congedo, G., Conselice, C. J., Conversi, L., Copin, Y., Courbin, F., Courtois, H. M., Cropper, M., Silva, A. D., Degaudenzi, H., Nichol, R. C., Percival, W. J., Gaztanaga, E., Nadathur, S., Naidoo, K.

5 May 2026, In: Astronomy and Astrophysics. 709, 21p., A15

Research output: Article

Parity-odd four-point correlation function 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., Forero-Romero, J. E., Gaztañaga, E., Guillou, L. L., Gutierrez, G., Howlett, C., Ishak, M., Joyce, R., Kremin, A., Lahav, O., Lamman, C., Landriau, M., Macorra, A. d. l., Miquel, R., Nadathur, S., Niz, G., Percival, W. J., Prada, F., Pérez-Ràfols, I., Rossi, G., Sanchez, E., Schlegel, D., Schubnell, M., Seo, H. -., Silber, J., Sprayberry, D., Tarlé, G., Weaver, B. A., Zou, H.

4 May 2026, In: Physical Review D. 113, 20p., 103502

Research output: Article

Inference of the linear matter power spectrum at z = 0 using DESI DR1 Full-Shape data

Cereskaite, R., Mueller, E., Howlett, C., Davis, T. M., Aguilar, J., Ahlen, S., Bianchi, D., Brooks, D., Castander, F. J., Claybaugh, T., Cuceu, A., Macorra, A. d. l., Ferraro, S., Font-Ribera, A., Forero-Romero, J. E., Gaztanaga, E., Gutierrez, G., Hahn, C., Honscheid, K., Huterer, D., Ishak, M., Joyce, R., Juneau, S., Kirkby, D., Kremin, A., Lahav, O., Lambert, A., Landriau, M., Guillou, L. L., Manera, M., Meisner, A., Miquel, R., Moustakas, J., Nadathur, S., Palanque-Delabrouille, N., Percival, W. J., Prada, F., Perez-Rafols, I., Rossi, G., Sanchez, E., Schlegel, D., Schubnell, M., Seo, H., Silber, J., Sprayberry, D., Tarle, G., Weaver, B. A., Zarrouk, P., Zhou, R., Zou, H.

30 Apr 2026, In: Journal of Cosmology and Astroparticle Physics. 2026, 04, 27p., 080

Research output: Article

Combined tracer analysis for DESI 2024 BAO

Valcin, D., Rashkovetskyi, M., Seo, H., Beutler, F., McDonald, P., de Mattia, A., Rosado-Marín, A. J., Ross, A. J., Padmanabhan, N., Aguilar, J., Ahlen, S., Andrade, U., Bianchi, D., Brooks, D., Chaussidon, E., Chen, S., Chen, X., Claybaugh, T., Cuceu, A., Dawson, K. S., Macorra, A. d. l., Dey, B., Ding, Z., Doel, P., Ferraro, S., Font-Ribera, A., Forero-Romero, J. E., Gaztañaga, E., Gontcho, S. G. A., Gutierrez, G., Hahn, C., Honscheid, K., Howlett, C., Ishak, M., Kehoe, R., Kirkby, D., Kisner, T., Kremin, A., Lahav, O., Lambert, A., Landriau, M., Levi, M. E., Manera, M., Meisner, A., Mena-Fernández, J., Miquel, R., Nadathur, S., Percival, W. J., Ruggeri, R., Samushia, L.

22 Apr 2026, In: Journal of Cosmology and Astroparticle Physics. 2026, 04, 37p., 058

Research output: Article

DESI Strong Lens Foundry. III. Keck Spectroscopy for Strong Lenses Discovered Using Residual Neural Networks

Agarwal, S., Huang, X., Sheu, W., Storfer, C. J., Tamargo-Arizmendi, M., Tabares-Tarquinio, S., Schlegel, D. J., Aldering, G., Bolton, A., Cikota, A., Dey, A., Filipp, A., Jullo, E., Kwon, K. J., Perlmutter, S., Shu, Y., Sukay, E., Suzuki, N., Aguilar, J., Ahlen, S., BenZvi, S., Brooks, D., Claybaugh, T., Doel, P., Forero-Romero, J. E., Gaztañaga, E., Gontcho A Gontcho, S., Gutierrez, G., Honscheid, K., Ishak, M., Juneau, S., Kehoe, R., Kisner, T., Koposov, S. E., Lambert, A., Landriau, M., Le Guillou, L., de la Macorra, A., Meisner, A., Miquel, R., Moustakas, J., Myers, A. D., Poppett, C., Prada, F., Pérez-Ràfols, I., Rossi, G., Sanchez, E., Schubnell, M., Sprayberry, D., Tarlé, G.

20 Apr 2026, In: Astrophysical Journal. 1001, 2, 13p., 162

Research output: Article

DESI DR1 Ly$α$ 1D power spectrum: Validation of estimators

Karaçaylı, N. G., Ravoux, C., Martini, P., Goff, J. M. L., Armengaud, E., Abdul-Karim, M., Aguilar, J., Ahlen, S., Anand, A., BenZvi, S., Bianchi, D., Brooks, D., Claybaugh, T., Cuceu, A., Macorra, A. d. l., Dey, B., Doel, P., Ferraro, S., Font-Ribera, A., Forero-Romero, J. E., Gaztañaga, E., Gontcho, S. G. A., Gutierrez, G., Herrera-Alcantar, H. K., Honscheid, K., Ishak, M., Jimenez, J., Joyce, R., Kirkby, D., Kisner, T., Kremin, A., Lahav, O., Landriau, M., Guillou, L. L., Manera, M., Meisner, A., Miquel, R., Nadathur, S., Niz, G., Palanque-Delabrouille, N., Percival, W. J., Poppett, C., Prada, F., Pérez-Ràfols, I., Rossi, G., Sanchez, E., Schlegel, D., Schubnell, M., Seo, H., Silber, J.

16 Apr 2026, In: Journal of Cosmology and Astroparticle Physics. 2026, 04, 32p., 048

Research output: Article

Signatures of a Tidally Induced Spiral Arm at the Anticenter of the Milky Way and a Kinematically Extended Anticenter Stream Using DESI DR2

Lambert, M., Rockosi, C. M., Koposov, S. E., Li, T. S., Valluri, M., Silva, L. B. e., Li, S., Amarante, J. A. S., Byström, A., Medina, G. E., Sandford, N. R., Najita, J., Kizhuprakkat, N., Aguilar, J. N., Ahlen, S., Bianchi, D., Brooks, D., Claybaugh, T., Dawson, K., Macorra, A. d. l., Doel, P., Forero-Romero, J. E., Gaztañaga, E., Gontcho, S. G. A., Gutierrez, G., Joyce, D., Kremin, A., Lamman, C., Landriau, M., Guillou, L. L., Manera, M., Meisner, A., Miquel, R., Moustakas, J., Myers, A., Nadathur, S., Percival, W., Prada, F., Perez-Rafols, I., Rossi, G., Sanchez, E., Schlegel, D., Schubnell, M., Silber, J. H., Sprayberry, D., Tarle, G., Weaver, B. A., Zhou, R., Zou, H.

15 Apr 2026, In: The Astronomical Journal. 171, 5, 19p., 292

Research output: Article

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Professor Enrique Gaztanaga

Summary

Research outputs

2026