Zobrazeno 1 - 10
of 161
pro vyhledávání: '"Campagne, J. E"'
Autor:
Leonard, C. D., Ferreira, T., Fang, X., Reischke, R., Schoeneberg, N., Tröster, T., Alonso, D., Campagne, J. E., Lanusse, F., Slosar, A., Ishak, M., Collaboration, the LSST Dark Energy Science
The rapidly increasing statistical power of cosmological imaging surveys requires us to reassess the regime of validity for various approximations that accelerate the calculation of relevant theoretical predictions. In this paper, we present the resu
Externí odkaz:
http://arxiv.org/abs/2212.04291
Counting pairs of galaxies or stars according to their distance is at the core of real-space correlation analyzes performed in astrophysics and cosmology. Upcoming galaxy surveys (LSST, Euclid) will measure properties of billions of galaxies challeng
Externí odkaz:
http://arxiv.org/abs/2012.08455
Autor:
Ansari, R., Campagne, J. E, Charlet, D., Moniez, M., Pailler, C., Perdereau, O., Taurigna, M., Martin, J. M., Rigaud, F., Colom, P., Abbon, Ph., Magneville, Ch., Pezzani, J., Viou, C., Torchinsky, S. A., Huang, Q., Zhang, J.
PAON4 is an L-band (1250-1500 MHz) small interferometer operating in transit mode deployed at the Nan\c{c}ay observatory in France, designed as a prototype instrument for Intensity Mapping. It features four 5~meter diameter dishes in a compact triang
Externí odkaz:
http://arxiv.org/abs/1910.07956
Apache Spark is a Big Data framework for working on large distributed datasets. Although widely used in the industry, it remains rather limited in the academic community or often restricted to software engineers. The goal of this paper is to show wit
Externí odkaz:
http://arxiv.org/abs/1807.03078
Publikováno v:
J.-E. Campagne et al 2017 ApJ 845 28
In the near future, cosmology will enter the wide and deep galaxy survey area allowing high-precision studies of the large scale structure of the universe in three dimensions. To test cosmological models and determine their parameters accurately, it
Externí odkaz:
http://arxiv.org/abs/1703.02818
Publikováno v:
A&A 602, A72 (2017)
The statistical distribution of galaxies is a powerful probe to constrain cosmological models and gravity. In particular the matter power spectrum $P(k)$ brings information about the cosmological distance evolution and the galaxy clustering together.
Externí odkaz:
http://arxiv.org/abs/1701.03592
Autor:
Ansari, R., Campagne, J. E, Colom, P., Ferrari, C., Magneville, Ch., Martin, J. M., Moniez, M., Torrento, A. S.
We have observed regions of three galaxy clusters at z$\sim$ [0.06, 0.09] (Abell85, Abell1205, Abell2440), as well as calibration sources with the Nancay radiotelescope (NRT) to search for 21 cm emission and fully characterize the FPGA based BAORadio
Externí odkaz:
http://arxiv.org/abs/1505.02623
Autor:
Ansari, R., Campagne, J. E., Colom, P., Goff, J. M. Le, Magneville, C., Martin, J. M., Moniez, M., Rich, J., Yèche, C.
Large Scale Structures (LSS) in the universe can be traced using the neutral atomic hydrogen HI through its 21cm emission. Such a 3D matter distribution map can be used to test the Cosmological model and to constrain the Dark Energy properties or its
Externí odkaz:
http://arxiv.org/abs/1108.1474
Autor:
Ansari, R., Campagne, J. E., Colom, P., Magneville, C., Martin, J. M., Moniez, M., Rich, J., Yèche, C.
Publikováno v:
Conference proceedings - Contribution aux Journ\'ees Scientifiques "Les radiot\'elescopes du Futur. Technologies et avanc\'ees scientifiques" - 29-30 mars 2011, Paris
3D mapping of matter distribution in the universe through the 21 cm radio emission of atomic hydrogen is a complementary approach to optical surveys for the study of the Large Scale Structures, in particular for measuring the BAO (Baryon Acoustic Osc
Externí odkaz:
http://arxiv.org/abs/1106.5659
Autor:
Di Lorenzo, S. Conforti, Campagne, J. E., Dulucq, F., De La Taille, C., Martin-Chassard, G., Berni, M. El, Wei, W.
PARISROC is a complete read out chip, in AMS SiGe 0.35 micron technology [1], for photomultipliers array. It allows triggerless acquisition for next generation neutrino experiments and it belongs to an R&D program funded by the French national agency
Externí odkaz:
http://arxiv.org/abs/1001.1305