☆ 4.7 Article

Constraining primordial non-Gaussianity using two galaxy surveys and CMB lensing

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2019)

Journal

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

Volume 489, Issue 2, Pages 1950-1956

Publisher

OXFORD UNIV PRESS

DOI: 10.1093/mnras/stz2258

Keywords

cosmological parameters; early Universe; large-scale structure of Universe

Categories

Astronomy & Astrophysics

Funding

South African Radio Astronomy Observatory
Claude Leon Foundation
UK Science & Technology Facilities Council [ST/N000668/1]
[ASI n.I/023/12/0]
STFC [ST/S000550/1, ST/N000668/1] Funding Source: UKRI

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Abstract

Next-generation galaxy surveys will be able to measure perturbations on scales beyond the equality scale. On these ultra-large scales, primordial non-Gaussianity leaves signatures that can shed light on the mechanism by which perturbations in the early Universe are generated. We perform a forecast analysis for constraining local type non-Gaussianity and its two-parameter extension with a simple scale-dependence. We combine different clustering measurements from future galaxy surveys - a 21cm intensity mapping survey and two photometric galaxy surveys - via the multitracer approach. Furthermore we then include cosmic microwave background (CMB) lensing from a CMB Stage 4 experiment in the multitracer, which can improve the constraints on bias parameters. We forecast sigma(f(NL)) similar or equal to 0.9 (1.4) by combining SKA1, a Euclid-like (LSST-like) survey, and CMB Stage 4 lensing. With CMB lensing, the precision on f(NL) improves by up to a factor of 2, showing that a joint analysis is important. In the case with running of f(NL), our results show that the combination of upcoming cosmological surveys could achieve sigma(n(NL)) similar or equal to 0.12 (0.22) on the running index.

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Article Astronomy & Astrophysics

Tensor-to-scalar ratio forecasts for extended LiteBIRD frequency configurations

U. Fuskeland, J. Aumont, R. Aurlien, C. Baccigalupi, A. J. Banday, H. K. Eriksen, J. Errard, R. T. Genova-Santos, T. Hasebe, J. Hubmayr, H. Imada, N. Krachmalnicoff, L. Lamagna, G. Pisano, D. Poletti, M. Remazeilles, K. L. Thompson, L. Vacher, I. K. Wehus, S. Azzoni, M. Ballardini, R. B. Barreiro, N. Bartolo, A. Basyrov, D. Beck, M. Bersanelli, M. Bortolami, M. Brilenkov, E. Calabrese, A. Carones, F. J. Casas, K. Cheung, J. Chluba, S. E. Clark, L. Clermont, F. Columbro, A. Coppolecchia, G. D'Alessandro, P. de Bernardis, T. de Haan, E. de la Hoz, M. De Petris, S. Della Torre, P. Diego-Palazuelos, F. Finelli, C. Franceschet, G. Galloni, M. Galloway, M. Gerbino, M. Gervasi, T. Ghigna, S. Giardiello, E. Gjerlow, A. Gruppuso, P. Hargrave, M. Hattori, M. Hazumi, L. T. Hergt, D. Herman, D. Herranz, E. Hivon, T. D. Hoang, K. Kohri, M. Lattanzi, A. T. Lee, C. Leloup, F. Levrier, A. I. Lonappan, G. Luzzi, B. Maffei, E. Martinez-Gonzalez, S. Masi, S. Matarrese, T. Matsumura, M. Migliaccio, L. Montier, G. Morgante, B. Mot, L. Mousset, R. Nagata, T. Namikawa, F. Nati, P. Natoli, S. Nerval, A. Novelli, L. Pagano, A. Paiella, D. Paoletti, G. Pascual-Cisneros, G. Patanchon, V. Pelgrims, F. Piacentini, G. Piccirilli, G. Polenta, G. Puglisi, N. Raffuzzi, A. Ritacco, J. A. Rubino-Martin, G. Savini, D. Scott, Y. Sekimoto, M. Shiraishi, G. Signorelli, S. L. Stever, N. Stutzer, R. M. Sullivan, H. Takakura, L. Terenzi, H. Thommesen, M. Tristram, M. Tsuji, P. Vielva, J. Weller, B. Westbrook, G. Weymann-Despres, E. J. Wollack, M. Zannoni

ASTRONOMY & ASTROPHYSICS (2023)

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Article Astronomy & Astrophysics

Euclid preparation XXIV. Calibration of the halo mass function in ?(ν)CDM cosmologies

T. Castro, A. Fumagalli, R. E. Angulo, S. Bocquet, S. Borgani, C. Carbone, J. Dakin, K. Dolag, C. Giocoli, P. Monaco, A. Ragagnin, A. Saro, E. Sefusatti, M. Costanzi, A. M. C. Le Brun, P. -S. Corasaniti, A. Amara, L. Amendola, M. Baldi, R. Bender, C. Bodendorf, E. Branchini, M. Brescia, S. Camera, V. Capobianco, J. Carretero, M. Castellano, S. Cavuoti, A. Cimatti, R. Cledassou, G. Congedo, L. Conversi, Y. Copin, L. Corcione, F. Courbin, A. Da Silva, H. Degaudenzi, M. Douspis, F. Dubath, C. A. J. Duncan, X. Dupac, S. Farrens, S. Ferriol, P. Fosalba, M. Frailis, E. Franceschi, S. Galeotta, B. Garilli, B. Gillis, A. Grazian, F. Grupp, S. V. H. Haugan, F. Hormuth, A. Hornstrup, P. Hudelot, K. Jahnke, S. Kermiche, T. Kitching, M. Kunz, H. Kurki-Suonio, P. B. Lilje, I. Lloro, O. Mansutti, O. Marggraf, F. Marulli, M. Meneghetti, E. Merlin, G. Meylan, M. Moresco, L. Moscardini, E. Munari, S. M. Niemi, C. Padilla, S. Paltani, F. Pasian, K. Pedersen, V. Pettorino, S. Pires, G. Polenta, M. Poncet, L. Popa, L. Pozzetti, F. Raison, R. Rebolo, A. Renzi, J. Rhodes, G. Riccio, E. Romelli, R. Saglia, D. Sapone, B. Sartoris, P. Schneider, G. Seidel, G. Sirri, L. Stanco, P. Tallada Crespi, A. N. Taylor, R. Toledo-Moreo, F. Torradeflot, I. Tutusaus, E. A. Valentijn, L. Valenziano, T. Vassallo, Y. Wang, J. Weller, A. Zacchei, G. Zamorani, S. Andreon, S. Bardelli, E. Bozzo, C. Colodro-Conde, D. Di Ferdinando, M. Farina, J. Gracia-Carpio, V. Lindholm, C. Neissner, V. Scottez, M. Tenti, E. Zucca, C. Baccigalupi, A. Balaguera-Antolinez, M. Ballardini, F. Bernardeau, A. Biviano, A. Blanchard, A. S. Borlaff, C. Burigana, R. Cabanac, A. Cappi, C. S. Carvalho, S. Casas, G. Castignani, A. Cooray, J. Coupon, H. M. Courtois, S. Davini, G. De Lucia, G. Desprez, H. Dole, J. A. Escartin, S. Escoffier, F. Finelli, K. Ganga, J. Garcia-Bellido, K. George, G. Gozaliasl, H. Hildebrandt, I. Hook, S. Ilic, V. Kansal, E. Keihanen, C. C. Kirkpatrick, A. Loureiro, J. Macias-Perez, M. Magliocchetti, R. Maoli, S. Marcin, M. Martinelli, N. Martinet, S. Matthew, M. Maturi, R. B. Metcalf, G. Morgante, S. Nadathur, A. A. Nucita, L. Patrizii, A. Peel, V. Popa, C. Porciani, D. Potter, A. Pourtsidou, M. Pontinen, A. G. Sanchez, Z. Sakr, M. Schirmer, M. Sereno, A. Spurio Mancini, R. Teyssier, J. Valiviita, A. Veropalumbo, M. Viel

Summary: Euclid's photometric galaxy cluster survey has the potential to be a strong cosmological probe. A new calibration of the halo mass function for accurate recovery of cosmological parameters from Euclid cluster counts is presented. The calibration is based on N-body simulations and takes into account systematic errors arising from numerical effects. The results demonstrate a sub-percent accuracy in reproducing results from various cosmological models, except for the effect of the halo finder algorithm which could lead to biased cosmological inference.

ASTRONOMY & ASTROPHYSICS (2023)

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Article Astronomy & Astrophysics

Euclid preparation XXVII. A UV-NIR spectral atlas of compact planetary nebulae for wavelength calibration

K. Paterson, M. Schirmer, Y. Copin, J. -C. Cuillandre, W. Gillard, L. A. Gutierrez Soto, L. Guzzo, H. Hoekstra, T. Kitching, S. Paltani, W. J. Percival, M. Scodeggio, L. Stanghellini, P. N. Appleton, R. Laureijs, Y. Mellier, N. Aghanim, B. Altieri, A. Amara, N. Auricchio, M. Baldi, R. Bender, C. Bodendorf, D. Bonino, E. Branchini, M. Brescia, J. Brinchmann, S. Camera, V. Capobianco, C. Carbone, J. Carretero, F. J. Castander, M. Castellano, S. Cavuoti, A. Cimatti, R. Cledassou, G. Congedo, C. J. Conselice, L. Conversi, L. Corcione, F. Courbin, A. Da Silva, H. Degaudenzi, J. Dinis, M. Douspis, F. Dubath, X. Dupac, S. Ferriol, M. Frailis, E. Franceschi, M. Fumana, S. Galeotta, B. Garilli, B. Gillis, C. Giocoli, A. Grazian, F. Grupp, S. V. H. Haugan, W. Holmes, A. Hornstrup, P. Hudelot, K. Jahnke, M. Kuemmel, A. Kiessling, M. Kilbinger, R. Kohley, B. Kubik, M. Kunz, H. Kurki-Suonio, S. Ligori, P. B. Lilje, I. Lloro, E. Maiorano, O. Mansutti, O. Marggraf, K. Markovic, F. Marulli, R. Massey, E. Medinaceli, S. Mei, M. Meneghetti, G. Meylan, M. Moresco, L. Moscardini, R. Nakajima, S. -M. Niemi, J. W. Nightingale, T. Nutma, C. Padilla, F. Pasian, K. Pedersen, G. Polenta, M. Poncet, L. A. Popa, F. Raison, A. Renzi, J. Rhodes, G. Riccio, H. -W. Rix, E. Romelli, M. Roncarelli, E. Rossetti, R. Saglia, B. Sartoris, P. Schneider, A. Secroun, G. Seidel, S. Serrano, C. Sirignano, G. Sirri, J. Skottfelt, L. Stanco, P. Tallada-Crespi, A. N. Taylor, I. Tereno, R. Toledo-Moreo, F. Torradeflot, I. Tutusaus, L. Valenziano, T. Vassallo, Y. Wang, J. Weller, G. Zamorani, J. Zoubian, S. Andreon, S. Bardelli, E. Bozzo, C. Colodro-Conde, D. Di Ferdinando, M. Farina, J. Gracia-Carpio, E. Keihaenen, V. Lindholm, D. Maino, N. Mauri, V. Scottez, M. Tenti, E. Zucca, Y. Akrami, C. Baccigalupi, M. Ballardini, A. Biviano, A. S. Borlaff, C. Burigana, R. Cabanac, A. Cappi, C. S. Carvalho, S. Casas, G. Castignani, T. Castro, K. C. Chambers, A. R. Cooray, J. Coupon, H. M. Courtois, S. Davini, G. De Lucia, G. Desprez, J. A. Escartin, S. Escoffier, I. Ferrero, L. Gabarra, J. Garcia-Bellido, K. George, F. Giacomini, G. Gozaliasl, H. Hildebrandt, I. Hook, J. J. E. Kajava, V. Kansal, C. C. Kirkpatrick, L. Legrand, A. Loureiro, M. Magliocchetti, G. Mainetti, R. Maoli, S. Marcin, M. Martinelli, N. Martinet, C. J. A. P. Martins, S. Matthew, L. Maurin, R. B. Metcalf, P. Monaco, G. Morgante, S. Nadathur, L. Patrizii, J. Pollack, C. Porciani, D. Potter, M. Poentinen, A. G. Sanchez, Z. Sakr, A. Schneider, E. Sefusatti, M. Sereno, A. Shulevski, J. Stadel, J. Steinwagner, C. Valieri, J. Valiviita, A. Veropalumbo, M. Viel, I. A. Zinchenko

Summary: The Euclid mission will survey the extragalactic sky and obtain spectroscopic redshifts for 30 million galaxies using the NISP instrument. To ensure wavelength calibration accuracy, the team used emission lines from compact planetary nebulae (PNe) to recalibrate the data. They obtained high-resolution spectra from ground-based instruments and created an atlas of heliocentric vacuum wavelengths for further analysis.

ASTRONOMY & ASTROPHYSICS (2023)

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Article Astronomy & Astrophysics

Phantom scalar-tensor models and cosmological tensions

Mario Ballardini, Angelo Giuseppe Ferrari, Fabio Finelli

Summary: We investigate the observational constraints for three different extended scalar-tensor theories of gravity with a negative kinetic term for the scalar field. We find that these models generally lead to lower values of H0 and cr8 compared to the standard kinetic term models. However, cosmological observations prefer a parameter space where the theory is not healthy, as the scalar field behaves as a ghost. Additionally, we show that early modified gravity with a quartic coupling in the phantom branch can alleviate the H0 tension by fitting multiple cosmic observations.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2023)

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Article Astronomy & Astrophysics

Theoretical Systematics in Testing the Cosmological Principle with the Kinematic Quasar Dipole

Caroline Guandalin, Jade Piat, Chris Clarkson, Roy Maartens

Summary: In the era of precision cosmology, it is critical to test the viability of the Cosmological Principle. Recent studies have found a tension between the cosmic microwave background and the large-scale matter distribution, suggesting a possible new cosmic tension and a violation of the Cosmological Principle. However, neglecting redshift evolution can lead to a significant overestimate of the relative velocity amplitude, indicating the need to resolve this theoretical bias.

ASTROPHYSICAL JOURNAL (2023)

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Article Physics, Particles & Fields

Constraining primordial non-Gaussianity by combining next-generation galaxy and 21 cm intensity mapping surveys

Sheean Jolicoeur, Roy Maartens, Simthembile Dlamini

Summary: Surveys of the matter distribution contain information on potential non-Gaussianity in the early Universe. By combining different surveys, the cosmic variance can be reduced and the precision of primordial non-Gaussianity can be improved. A combination of optical galaxy surveys and 21 cm intensity mapping surveys can deliver precision comparable to that from the CMB.

EUROPEAN PHYSICAL JOURNAL C (2023)

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Article Astronomy & Astrophysics

New constraints on primordial features from the galaxy two-point correlation function

Mario Ballardini, Fabio Finelli, Federico Marulli, Lauro Moscardini, Alfonso Veropalumbo

Summary: Features in the primordial power spectrum represent the imprinted signal in the density perturbations of the physics and evolution of the early Universe. A measurement of such signals will represents the need to go beyond the minimal assumption made for the initial conditions of the cosmological perturbations. We study different templates with undamped oscillations or a bump from the two-point correlation function measured from BOSS DR12 galaxies, constraining the amplitude of the features to be at most a few percent. These constraints are competitive to the ones obtained with Planck DR3.

PHYSICAL REVIEW D (2023)

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Article Astronomy & Astrophysics

Type Ia supernovae data with scalar-tensor gravity

Mario Ballardini, Fabio Finelli

Summary: This study focuses on using type Ia supernovae (SNe Ia) in scalar-tensor theories of gravity, specifically induced gravity, and tests the corrections introduced by a time variation of the Newton constant on the SNe distance modulus relation. It is found that adding SNe data can further tighten the constraints on cosmological parameters.

PHYSICAL REVIEW D (2022)

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Correction Astronomy & Astrophysics

Energy-momentum tensor and helicity for gauge fields coupled to a pseudoscalar inflaton (vol 100, 123542, 2019)

M. Ballardini, M. Braglia, F. Finelli, G. Marozzi, A. A. Starobinsky

PHYSICAL REVIEW D (2022)

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