Constraining primordial non-Gaussianity from DESI DR1 quasars and Planck PR4 CMB Lensing
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2025
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866908967205076992 |
|---|---|
| author | Chiarenza, Sofia Krolewski, Alex Bonici, Marco Chaussidon, Edmond de Belsunce, Roger Percival, Will Aguilar, Jessica Nicole Ahlen, Steven Lizancos, Anton Baleato Bianchi, Davide Brooks, David Claybaugh, Todd Cuceu, Andrei Dawson, Kyle de la Macorra, Axel Doel, Peter Ferraro, Simone Font-Ribera, Andreu Forero-Romero, Jaime E. Gaztañaga, Enrique Gontcho, Satya Gontcho A Gutierrez, Gaston Herrera-Alcantar, Hiram K. Honscheid, Klaus Huterer, Dragan Ishak, Mustapha Joyce, Dick Kirkby, David Kremin, Anthony Lahav, Ofer Lamman, Claire Landriau, Martin Guillou, Laurent Le Levi, Michael Manera, Marc Martini, Paul Meisner, Aaron Miquel, Ramon Nadathur, Seshadri Newman, Jeffrey A. Niz, Gustavo Palanque-Delabrouille, Nathalie Poppett, Claire Prada, Francisco Pérez-Ràfols, Ignasi Rossi, Graziano Sanchez, Eusebio Schlegel, David Schubnell, Michael Seo, Hee-Jong Silber, Joseph Harry Sprayberry, David Tarlé, Gregory Weaver, Benjamin Alan Yèche, Christophe Zhou, Rongpu Zou, Hu |
| author_facet | Chiarenza, Sofia Krolewski, Alex Bonici, Marco Chaussidon, Edmond de Belsunce, Roger Percival, Will Aguilar, Jessica Nicole Ahlen, Steven Lizancos, Anton Baleato Bianchi, Davide Brooks, David Claybaugh, Todd Cuceu, Andrei Dawson, Kyle de la Macorra, Axel Doel, Peter Ferraro, Simone Font-Ribera, Andreu Forero-Romero, Jaime E. Gaztañaga, Enrique Gontcho, Satya Gontcho A Gutierrez, Gaston Herrera-Alcantar, Hiram K. Honscheid, Klaus Huterer, Dragan Ishak, Mustapha Joyce, Dick Kirkby, David Kremin, Anthony Lahav, Ofer Lamman, Claire Landriau, Martin Guillou, Laurent Le Levi, Michael Manera, Marc Martini, Paul Meisner, Aaron Miquel, Ramon Nadathur, Seshadri Newman, Jeffrey A. Niz, Gustavo Palanque-Delabrouille, Nathalie Poppett, Claire Prada, Francisco Pérez-Ràfols, Ignasi Rossi, Graziano Sanchez, Eusebio Schlegel, David Schubnell, Michael Seo, Hee-Jong Silber, Joseph Harry Sprayberry, David Tarlé, Gregory Weaver, Benjamin Alan Yèche, Christophe Zhou, Rongpu Zou, Hu |
| contents | We present the first measurement of local-type primordial non-Gaussianity from the cross-correlation between $1.2$ million spectroscopically confirmed quasars from the first data release (DR1) of the Dark Energy Spectroscopic Instrument (DESI) and the Planck PR4 CMB lensing reconstructions. The analysis is performed in three tomographic redshift bins covering $0.8 < z < 3.5$, covering a sky fraction of $\sim 20\%$. We adopt a catalog-based pseudo-$C_\ell$ estimator and apply linear imaging weights validated on noiseless mocks. Compared to previous analyses using photometric quasar samples, our results benefit from the high purity of the DESI spectroscopic sample, the reduced noise of PR4 lensing, and the absence of excess large-scale power in the spectroscopic quasar auto-correlation. Fitting simultaneously for the non-Gaussianity parameter $f_{\mathrm{NL}}$ and the linear bias amplitude in each redshift bin, we obtain $f_{\mathrm{NL}} = 2^{+28}_{-34}$ for a response parameter $p=1.6$, and $f_{\mathrm{NL}} = 6^{+20}_{-24}$ for $p=1.0$. These results improve the constraints on $f_{\mathrm{NL}}$ by $\sim 35\%$ compared to the previous analysis based on the Legacy Imaging Survey DR9. Additionally, we derive an optimal weighting scheme to maximize the constraining power. In this case, and assuming $p=1.6$, we obtain $f_\mathrm{NL}=19^{+25}_{-31}$. Our results demonstrate the statistical power of DESI quasars for probing inflationary physics, and highlight the promise of future DESI data releases. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_17865 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Constraining primordial non-Gaussianity from DESI DR1 quasars and Planck PR4 CMB Lensing Chiarenza, Sofia Krolewski, Alex Bonici, Marco Chaussidon, Edmond de Belsunce, Roger Percival, Will Aguilar, Jessica Nicole Ahlen, Steven Lizancos, Anton Baleato Bianchi, Davide Brooks, David Claybaugh, Todd Cuceu, Andrei Dawson, Kyle de la Macorra, Axel Doel, Peter Ferraro, Simone Font-Ribera, Andreu Forero-Romero, Jaime E. Gaztañaga, Enrique Gontcho, Satya Gontcho A Gutierrez, Gaston Herrera-Alcantar, Hiram K. Honscheid, Klaus Huterer, Dragan Ishak, Mustapha Joyce, Dick Kirkby, David Kremin, Anthony Lahav, Ofer Lamman, Claire Landriau, Martin Guillou, Laurent Le Levi, Michael Manera, Marc Martini, Paul Meisner, Aaron Miquel, Ramon Nadathur, Seshadri Newman, Jeffrey A. Niz, Gustavo Palanque-Delabrouille, Nathalie Poppett, Claire Prada, Francisco Pérez-Ràfols, Ignasi Rossi, Graziano Sanchez, Eusebio Schlegel, David Schubnell, Michael Seo, Hee-Jong Silber, Joseph Harry Sprayberry, David Tarlé, Gregory Weaver, Benjamin Alan Yèche, Christophe Zhou, Rongpu Zou, Hu Cosmology and Nongalactic Astrophysics We present the first measurement of local-type primordial non-Gaussianity from the cross-correlation between $1.2$ million spectroscopically confirmed quasars from the first data release (DR1) of the Dark Energy Spectroscopic Instrument (DESI) and the Planck PR4 CMB lensing reconstructions. The analysis is performed in three tomographic redshift bins covering $0.8 < z < 3.5$, covering a sky fraction of $\sim 20\%$. We adopt a catalog-based pseudo-$C_\ell$ estimator and apply linear imaging weights validated on noiseless mocks. Compared to previous analyses using photometric quasar samples, our results benefit from the high purity of the DESI spectroscopic sample, the reduced noise of PR4 lensing, and the absence of excess large-scale power in the spectroscopic quasar auto-correlation. Fitting simultaneously for the non-Gaussianity parameter $f_{\mathrm{NL}}$ and the linear bias amplitude in each redshift bin, we obtain $f_{\mathrm{NL}} = 2^{+28}_{-34}$ for a response parameter $p=1.6$, and $f_{\mathrm{NL}} = 6^{+20}_{-24}$ for $p=1.0$. These results improve the constraints on $f_{\mathrm{NL}}$ by $\sim 35\%$ compared to the previous analysis based on the Legacy Imaging Survey DR9. Additionally, we derive an optimal weighting scheme to maximize the constraining power. In this case, and assuming $p=1.6$, we obtain $f_\mathrm{NL}=19^{+25}_{-31}$. Our results demonstrate the statistical power of DESI quasars for probing inflationary physics, and highlight the promise of future DESI data releases. |
| title | Constraining primordial non-Gaussianity from DESI DR1 quasars and Planck PR4 CMB Lensing |
| topic | Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2512.17865 |