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Autori principali: Karaçaylı, Naim Göksel, Martini, Paul, Guy, Julien, Ravoux, Corentin, Abdul-Karim, Marie Lynn, Armengaud, Eric, Walther, Michael, Aguilar, J., Ahlen, S., Bailey, S., Bautista, J., Beltran, S. F., Brooks, D., Cabayol-Garcia, L., Chabanier, S., Chaussidon, E., Chaves-Montero, J., Dawson, K., de la Cruz, R., de la Macorra, A., Doel, P., Font-Ribera, A., Forero-Romero, J. E., Gontcho, S. Gontcho A, Gonzalez-Morales, A. X., Gordon, C., Herrera-Alcantar, H. K, Honscheid, K., Iršič, V., Ishak, M., Kehoe, R., Kisner, T., Kremin, A., Landriau, M., Guillou, L. Le, Levi, M. E., Lukić, Z., Meisner, A., Miquel, R., Moustakas, J., Mueller, E., Muñoz-Gutiérrez, A., Napolitano, L., Nie, J., Niz, G., Palanque-Delabrouille, N., Percival, W. J., Pieri, M., Poppett, C., Prada, F., Pérez-Ràfols, I., Ramírez-Pérez, C., Rossi, G., Sanchez, E., Seo, H., Sinigaglia, F., Tan, T., Tarlé, G., Wang, B., Weaver, B. A., Yèche, C., Zhou, Z.
Natura: Preprint
Pubblicazione: 2023
Soggetti:
Cosmology and Nongalactic Astrophysics
Accesso online:https://arxiv.org/abs/2306.06316
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author Karaçaylı, Naim Göksel
Martini, Paul
Guy, Julien
Ravoux, Corentin
Abdul-Karim, Marie Lynn
Armengaud, Eric
Walther, Michael
Aguilar, J.
Ahlen, S.
Bailey, S.
Bautista, J.
Beltran, S. F.
Brooks, D.
Cabayol-Garcia, L.
Chabanier, S.
Chaussidon, E.
Chaves-Montero, J.
Dawson, K.
de la Cruz, R.
de la Macorra, A.
Doel, P.
Font-Ribera, A.
Forero-Romero, J. E.
Gontcho, S. Gontcho A
Gonzalez-Morales, A. X.
Gordon, C.
Herrera-Alcantar, H. K
Honscheid, K.
Iršič, V.
Ishak, M.
Kehoe, R.
Kisner, T.
Kremin, A.
Landriau, M.
Guillou, L. Le
Levi, M. E.
Lukić, Z.
Meisner, A.
Miquel, R.
Moustakas, J.
Mueller, E.
Muñoz-Gutiérrez, A.
Napolitano, L.
Nie, J.
Niz, G.
Palanque-Delabrouille, N.
Percival, W. J.
Pieri, M.
Poppett, C.
Prada, F.
Pérez-Ràfols, I.
Ramírez-Pérez, C.
Rossi, G.
Sanchez, E.
Seo, H.
Sinigaglia, F.
Tan, T.
Tarlé, G.
Wang, B.
Weaver, B. A.
Yèche, C.
Zhou, Z.
author_facet Karaçaylı, Naim Göksel
Martini, Paul
Guy, Julien
Ravoux, Corentin
Abdul-Karim, Marie Lynn
Armengaud, Eric
Walther, Michael
Aguilar, J.
Ahlen, S.
Bailey, S.
Bautista, J.
Beltran, S. F.
Brooks, D.
Cabayol-Garcia, L.
Chabanier, S.
Chaussidon, E.
Chaves-Montero, J.
Dawson, K.
de la Cruz, R.
de la Macorra, A.
Doel, P.
Font-Ribera, A.
Forero-Romero, J. E.
Gontcho, S. Gontcho A
Gonzalez-Morales, A. X.
Gordon, C.
Herrera-Alcantar, H. K
Honscheid, K.
Iršič, V.
Ishak, M.
Kehoe, R.
Kisner, T.
Kremin, A.
Landriau, M.
Guillou, L. Le
Levi, M. E.
Lukić, Z.
Meisner, A.
Miquel, R.
Moustakas, J.
Mueller, E.
Muñoz-Gutiérrez, A.
Napolitano, L.
Nie, J.
Niz, G.
Palanque-Delabrouille, N.
Percival, W. J.
Pieri, M.
Poppett, C.
Prada, F.
Pérez-Ràfols, I.
Ramírez-Pérez, C.
Rossi, G.
Sanchez, E.
Seo, H.
Sinigaglia, F.
Tan, T.
Tarlé, G.
Wang, B.
Weaver, B. A.
Yèche, C.
Zhou, Z.
contents The one-dimensional power spectrum $P_{\mathrm{1D}}$ of the Ly$α$ forest provides important information about cosmological and astrophysical parameters, including constraints on warm dark matter models, the sum of the masses of the three neutrino species, and the thermal state of the intergalactic medium. We present the first measurement of $P_{\mathrm{1D}}$ with the quadratic maximum likelihood estimator (QMLE) from the Dark Energy Spectroscopic Instrument (DESI) survey early data sample. This early sample of $54~600$ quasars is already comparable in size to the largest previous studies, and we conduct a thorough investigation of numerous instrumental and analysis systematic errors to evaluate their impact on DESI data with QMLE. We demonstrate the excellent performance of the spectroscopic pipeline noise estimation and the impressive accuracy of the spectrograph resolution matrix with two-dimensional image simulations of raw DESI images that we processed with the DESI spectroscopic pipeline. We also study metal line contamination and noise calibration systematics with quasar spectra on the red side of the Ly$α$ emission line. In a companion paper, we present a similar analysis based on the Fast Fourier Transform estimate of the power spectrum. We conclude with a comparison of these two approaches and implications for the upcoming DESI Year 1 analysis.
format Preprint
id arxiv_https___arxiv_org_abs_2306_06316
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Optimal 1D Ly$α$ Forest Power Spectrum Estimation -- III. DESI early data
Karaçaylı, Naim Göksel
Martini, Paul
Guy, Julien
Ravoux, Corentin
Abdul-Karim, Marie Lynn
Armengaud, Eric
Walther, Michael
Aguilar, J.
Ahlen, S.
Bailey, S.
Bautista, J.
Beltran, S. F.
Brooks, D.
Cabayol-Garcia, L.
Chabanier, S.
Chaussidon, E.
Chaves-Montero, J.
Dawson, K.
de la Cruz, R.
de la Macorra, A.
Doel, P.
Font-Ribera, A.
Forero-Romero, J. E.
Gontcho, S. Gontcho A
Gonzalez-Morales, A. X.
Gordon, C.
Herrera-Alcantar, H. K
Honscheid, K.
Iršič, V.
Ishak, M.
Kehoe, R.
Kisner, T.
Kremin, A.
Landriau, M.
Guillou, L. Le
Levi, M. E.
Lukić, Z.
Meisner, A.
Miquel, R.
Moustakas, J.
Mueller, E.
Muñoz-Gutiérrez, A.
Napolitano, L.
Nie, J.
Niz, G.
Palanque-Delabrouille, N.
Percival, W. J.
Pieri, M.
Poppett, C.
Prada, F.
Pérez-Ràfols, I.
Ramírez-Pérez, C.
Rossi, G.
Sanchez, E.
Seo, H.
Sinigaglia, F.
Tan, T.
Tarlé, G.
Wang, B.
Weaver, B. A.
Yèche, C.
Zhou, Z.
Cosmology and Nongalactic Astrophysics
The one-dimensional power spectrum $P_{\mathrm{1D}}$ of the Ly$α$ forest provides important information about cosmological and astrophysical parameters, including constraints on warm dark matter models, the sum of the masses of the three neutrino species, and the thermal state of the intergalactic medium. We present the first measurement of $P_{\mathrm{1D}}$ with the quadratic maximum likelihood estimator (QMLE) from the Dark Energy Spectroscopic Instrument (DESI) survey early data sample. This early sample of $54~600$ quasars is already comparable in size to the largest previous studies, and we conduct a thorough investigation of numerous instrumental and analysis systematic errors to evaluate their impact on DESI data with QMLE. We demonstrate the excellent performance of the spectroscopic pipeline noise estimation and the impressive accuracy of the spectrograph resolution matrix with two-dimensional image simulations of raw DESI images that we processed with the DESI spectroscopic pipeline. We also study metal line contamination and noise calibration systematics with quasar spectra on the red side of the Ly$α$ emission line. In a companion paper, we present a similar analysis based on the Fast Fourier Transform estimate of the power spectrum. We conclude with a comparison of these two approaches and implications for the upcoming DESI Year 1 analysis.
title Optimal 1D Ly$α$ Forest Power Spectrum Estimation -- III. DESI early data
topic Cosmology and Nongalactic Astrophysics
url https://arxiv.org/abs/2306.06316

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