CMB lensing and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Ly</mml:mi><mml:mi>α</mml:mi></mml:math> forest cross bispectrum from DESI’s first-year quasar sample
The squeezed cross-bispectrum ${B}_{\ensuremath{\kappa},\mathrm{Ly}\ensuremath{\alpha}}$ between the gravitational lensing in the cosmic microwave background and the 1D $\mathrm{Ly}\ensuremath{\alpha}$ forest power spectrum can constrain bias parameters and break degeneracies between ${\ensuremath{\sigma}}_{8}$ and other cosmological parameters. We detect ${B}_{\ensuremath{\kappa},\mathrm{Ly}\ensuremath{\alpha}}$ with $4.8\ensuremath{\sigma}$ significance at an effective redshift ${z}_{\mathrm{eff}}=2.4$ using Planck PR3 lensing map and over 280,000 quasar spectra from the Dark Energy Spectroscopic Instrument's first-year data. We test our measurement against metal contamination and foregrounds such as Galactic extinction and clusters of galaxies by deprojecting the thermal Sunyaev-Zeldovich effect. We compare our results to a tree-level perturbation theory calculation and find reasonable agreement between the model and measurement.
Authors
- D. Kirkby (ORCID: https://orcid.org/0000-0002-8828-5463)
- Will J. Percival (ORCID: https://orcid.org/0000-0002-0644-5727)
- Andrew Lambert (ORCID: https://orcid.org/0009-0003-5658-2601)
- C. Ravoux
- Paul Martini (ORCID: https://orcid.org/0000-0002-4279-4182)
- A. Muñoz-Gutiérrez (ORCID: https://orcid.org/0000-0002-3565-0148)
- E. F. Schlafly
- G. Niz
- Roger de Belsunce (ORCID: https://orcid.org/0000-0003-3660-4028)
- Eva-Maria Mueller (ORCID: https://orcid.org/0000-0002-4536-1999)
- N. Palanque‐Delabrouille (ORCID: https://orcid.org/0000-0003-3188-784X)
- Jeffrey A. Newman (ORCID: https://orcid.org/0000-0001-8684-2222)
- Gregory Tarlé (ORCID: https://orcid.org/0000-0003-1704-0781)
- E. Armengaud (ORCID: https://orcid.org/0000-0001-7600-5148)
- Laurent Le Guillou (ORCID: https://orcid.org/0000-0001-7178-8868)
- David Sprayberry (ORCID: https://orcid.org/0000-0001-7583-6441)
- David J. Schlegel (ORCID: https://orcid.org/0000-0002-5042-5088)
- Axel de la Macorra (ORCID: https://orcid.org/0000-0002-1769-1640)
- Simone Ferraro (ORCID: https://orcid.org/0000-0003-4992-7854)
- Jundan Nie (ORCID: https://orcid.org/0000-0001-6590-8122)
- M. E. Levi (ORCID: https://orcid.org/0000-0003-1887-1018)
- M. Landriau
- Marc Manera (ORCID: https://orcid.org/0000-0003-4962-8934)
- Naim Göksel Karaçaylı (ORCID: https://orcid.org/0000-0001-7336-8912)
- J. Aguilar (ORCID: https://orcid.org/0000-0003-0822-452X)
- Anthony Kremin (ORCID: https://orcid.org/0000-0001-6356-7424)
- David H. Weinberg (ORCID: https://orcid.org/0000-0001-7775-7261)
- Eusebio Sanchez (ORCID: https://orcid.org/0000-0002-9646-8198)
- Satya Gontcho A Gontcho (ORCID: https://orcid.org/0000-0003-3142-233X)
- Ashley J. Ross (ORCID: https://orcid.org/0000-0002-7522-9083)
- Steven P. Ahlen (ORCID: https://orcid.org/0000-0001-6098-7247)
- Aaron Meisner (ORCID: https://orcid.org/0000-0002-1125-7384)
- R. Miquel (ORCID: https://orcid.org/0000-0002-6610-4836)
- Theodore S. Kisner (ORCID: https://orcid.org/0000-0003-3510-7134)
- Biprateep Dey (ORCID: https://orcid.org/0000-0002-5665-7912)
- Mehdi Rezaie (ORCID: https://orcid.org/0000-0001-5589-7116)
- Hee‐Jong Seo (ORCID: https://orcid.org/0000-0002-6588-3508)
- T. Tan (ORCID: https://orcid.org/0000-0001-8289-1481)
- Hu Zou (ORCID: https://orcid.org/0000-0002-6684-3997)
- T. Claybaugh (ORCID: https://orcid.org/0000-0002-5024-6987)
- D. Brooks
- P. Doel
- Claire Poppett (ORCID: https://orcid.org/0000-0003-0512-5489)
- F. Prada (ORCID: https://orcid.org/0000-0001-7145-8674)
- B. A. Weaver
- J. E. Forero-Romero (ORCID: https://orcid.org/0000-0002-2890-3725)
- Klaus Honscheid
- K. Fanning
- A. X. Gonzalez-Morales
- J. Guy
- Adam D. Myers
- G. Gutiérrez
Institutions
- Institució Catalana de Recerca i Estudis Avançats (ES)
- Universitat Autònoma de Barcelona (ES)
- University of Wyoming (US)
- Space Telescope Science Institute (US)
- Universidad de Guanajuato (MX)
- Fermi National Accelerator Laboratory (US)
- Lawrence Berkeley National Laboratory (US)
- University of Waterloo (CA)
- University of Sussex (GB)
- University of Pittsburgh (US)
- Perimeter Institute (CA)
- Kansas State University (US)
- Chinese Academy of Sciences (CN)
- Université Clermont Auvergne (FR)
- Aix-Marseille Université (FR)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- University of Michigan (US)
- SLAC National Accelerator Laboratory (US)
- University of California System (US)
- Sejong University (KR)
- Sorbonne Université (FR)
- Shanghai Institute for Science of Science (CN)
- Centre de physique des particules de Marseille (FR)
- Kavli Institute for Particle Astrophysics and Cosmology (US)
- Ohio University (US)
- Instituto de Estudios Avanzados (VE)
- Wyoming Department of Education (US)
- CEA Paris-Saclay (FR)
- Barcelona Institute of Science and Technology (ES)
- Universidad de Los Andes (BO)
- Instituto de Astrofísica de Andalucía (ES)
- Institut de Recherche sur les Lois Fondamentales de l'Univers (FR)
- Laboratoire Médiations (FR)
- Institute of Science and Technology
- University College London (GB)
- The Ohio State University (US)
- Universidad Nacional Autónoma de México (MX)
- University of California, Berkeley (US)
Publication Details
- Journal
- Physical review. D/Physical review. D.
- Published
- 2024-09-03
- DOI
- https://doi.org/10.1103/physrevd.110.063505
- Citations
- 6
- Primary Topic
- Galaxies: Formation, Evolution, Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 1.99
Funders
- National Science Foundation
- U.S. Department of Energy
- National Aeronautics and Space Administration
- Gordon and Betty Moore Foundation
- California Institute of Technology
- Heising-Simons Foundation
- National Energy Research Scientific Computing Center
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- Consejo Nacional de Ciencia y Tecnología
- Ministerio de Ciencia e Innovación
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives
- Office of Science
- Jet Propulsion Laboratory
- Science and Technology Facilities Council
- Nanjing Institute of Astronomical Optics and Technology, Chinese Academy of Sciences
- Division of Astronomical Sciences
- High Energy Physics
- Lawrence Berkeley National Laboratory