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Cosmology

Group “Fundamental Interactions”

Cosmology The cosmology team includes researchers with expertise in Cosmology, General Relativity, Quantum Field Theory, and Particle Physics. They collaborate and share national and international grants with several groups of theorists, cosmologists, astronomers, astrophysicists, and particle physicists.

Over the past fifteen years, an avalanche of high-quality data has transformed cosmology into a field rich in results. It has become an ideal arena for testing and potentially falsifying predictions arising from several areas of fundamental physics. This abundance of information has recently enabled the discovery of unexpected phenomena such as the acceleration of the expansion of the universe and the detection of long-sought physical signals that had previously escaped observation, such as gravitational waves.

The core of our activities is organized around three main research directions:

  • Understanding the large-scale structure of the universe by studying the growth of structures in different regimes using statistical tools. Our objectives are to assess the contributions of the various forms of matter (ordinary and dark) to the processes of structure formation, and also to extract the values of the fundamental parameters of the cosmological model.
  • Revealing the nature of dark energy by studying the rich phenomenology of the accelerating universe. The goal is to refine our understanding both empirically—by testing the relevance of the standard description of gravity on large scales at the present time—and theoretically—by investigating which modified gravity models could generalize the current paradigm.
  • Assessing the consistency of the physical foundations of the cosmological model by testing certain fundamental assumptions made in data analysis, in order to guarantee the conceptual basis of the paradigm being used.

Team's directory

AGAPITO Alessandro

Ph.D.

Contact
BEL Julien

Research teacher

+33.4.91.26.95.05

Contact
BERA Sayantani

Post Ph.D.

Contact
CINTIA Giordano

Post Ph.D.

Contact
DE RENZIS Viola

Post Ph.D.

Contact
HU Shiqian

Post Ph.D.

Contact
KALBOUNEH Basheer

Post Ph.D.

+33.4.91.26.97.88

Contact
MANCARELLA Michele

Research teacher

Contact
MARINONI Christian

Research teacher

Team leader « Cosmology »

+33.4.91.26.95.35

Contact
PEDROTTI Alessandro

Ph.D.

Contact
PIAZZA Federico

Research teacher

+33.4.91.26.95.00

Contact
RAMOS Samuel

Ph.D.

Contact
SANTIAGO Jessica

Post Ph.D.

Contact
SARMA Maharshi

Ph.D.

Contact
TAXIL Pierre

Research teacher emeritus

+33.4.91.26.95.52

Contact
VAREILLES Simeon

Ph.D.

Contact
VIREY Jean-Marc

Research teacher

+33.4.91.26.95.48

Contact
ZIANE Mehdi-Bara

Ph.D.

+33.4.91.26.97.79

Contact

Team's publications

The zCOSMOS Redshift Survey: How group environment alters global downsizing trends

A. Iovino, O. Cucciati, M. Scodeggio, C. Knobel, K. Kovac, S. Lilly, M. Bolzonella, L. A. M. Tasca, G. Zamorani, E. Zucca, et al.

Astronomy & Astrophysics - A&A, 2010, 509, pp.A40. (10.1051/0004-6361/200912558)

Journal articles


The 10k zCOSMOS: morphological transformation of galaxies in the group environment since z~1

K. Kovac, S. J. Lilly, C. Knobel, M. Bolzonella, A. Iovino, C. M. Carollo, C. Scarlata, M. Sargent, O. Cucciati, G. Zamorani, et al.

The Astrophysical Journal, 2010, 718 (1), pp.86. (10.1088/0004-637X/718/1/86)

Journal articles


The Vimos VLT Deep Survey. Stellar mass segregation and large-scale galaxy environment in the redshift range 0.2 < z < 1.4

Marco Scodeggio, D. Vergani, O. Cucciati, Angela Iovino, P. Franzetti, Bianca Garilli, Fabrice Lamareille, M. Bolzonella, L. Pozzetti, U. Abbas, et al.

Astronomy & Astrophysics - A&A, 2009, 501, pp.21-27. (10.1051/0004-6361/200810511)

Journal articles


Eddington ratios of faint AGN at intermediate redshift: evidence for a population of half-starved black holes

I. Gavignaud, L. Wisotzki, A. Bongiorno, S. Paltani, G. Zamorani, P. Møller, V. Le Brun, B. Husemann, F. Lamareille, M. Schramm, et al.

Astronomy & Astrophysics - A&A, 2008, 492, pp.637-650. (10.1051/0004-6361:20078957)

Journal articles


The VIMOS-VLT Deep Survey (VVDS). The dependence of clustering on galaxy stellar mass at z ~ 1

Baptiste Meneux, L. Guzzo, Bianca Garilli, Olivier Le Fèvre, Agnieszka Pollo, J. Blaizot, Gabriella de Lucia, M. Bolzonella, Fabrice Lamareille, L. Pozzetti, et al.

Astronomy & Astrophysics - A&A, 2008, 478, pp.299-310. (10.1051/0004-6361:20078182)

Journal articles


The VIMOS-VLT deep survey. Color bimodality and the mix of galaxy populations up to z ~ 2

P. Franzetti, Marco Scodeggio, Bianca Garilli, D. Vergani, D. Maccagni, L. Guzzo, Laurence Tresse, Olivier Ilbert, Fabrice Lamareille, Thierry Contini, et al.

Astronomy & Astrophysics - A&A, 2007, 465, pp.711-723. (10.1051/0004-6361:20065942)

Journal articles


VVDS-SWIRE. Clustering evolution from a spectroscopic sample of galaxies with redshift 0.2 < z < 2.1 selected from Spitzer IRAC 3.6 mum and 4.5 mum photometry

Sylvain de la Torre, Olivier Le Fèvre, S. Arnouts, L. Guzzo, D. Farrah, Angela Iovino, C. J. Lonsdale, Baptiste Meneux, Seb Oliver, Agnieszka Pollo, et al.

Astronomy & Astrophysics - A&A, 2007, 475, pp.443-451. (10.1051/0004-6361:20077161)

Journal articles


The VVDS type-1 AGN sample: the faint end of the luminosity function

Angela Bongiorno, G. Zamorani, I. Gavignaud, B. Marano, S. Paltani, G. Mathez, Palle Møller, J.-P. Picat, Michele Cirasuolo, Fabrice Lamareille, et al.

Astronomy & Astrophysics - A&A, 2007, 472, pp.443-454. (10.1051/0004-6361:20077611)

Journal articles


The cosmic star formation rate evolution from z = 5 to z = 0 from the VIMOS VLT deep survey

Laurence Tresse, Olivier Ilbert, E. Zucca, G. Zamorani, Sandro Bardelli, S. Arnouts, S. Paltani, L. Pozzetti, D. Bottini, Bianca Garilli, et al.

Astronomy & Astrophysics - A&A, 2007, 472, pp.403-419

HAL

Journal articles


The VIMOS VLT Deep Survey: the faint type-1 AGN sample

I. Gavignaud, Angela Bongiorno, S. Paltani, G. Mathez, G. Zamorani, Palle Møller, J.-P. Picat, V. Le Brun, B. Marano, Olivier Le Fèvre, et al.

Astronomy & Astrophysics - A&A, 2006, 457, pp.79-90. (10.1051/0004-6361:20065376)

Journal articles