Download PDF by Sébastien Fabbro (auth.), Domingos Barbosa, António José Da: 3K, SN’s, Clusters: Hunting the Cosmological Parameters with

By Sébastien Fabbro (auth.), Domingos Barbosa, António José Da Silva, Ana Maria Mourão (eds.)

ISBN-10: 9048165466

ISBN-13: 9789048165469

ISBN-10: 9401705593

ISBN-13: 9789401705592

The previous couple of years observed the improvement of a plethora of experiments and surveys probing the cosmological parameters. The Cosmic Microwave historical past (CMB), the Supernovae (SN) searches and galaxy cluster info, specifically through X-rays and Sunyaev-Zel'dovich impact, are one of the so much prolific giving precise information regarding the geometry, age and constitution formation of the Universe.

The application of the WS-HCP workshop was once aimed toward highlighting the clinical achievements and to debate the recent setting of "precision cosmology" inside of those 3 probes. the target was once to examine diversified observational suggestions, universal difficulties particularly foregrounds, and to evaluate the effect of observational uncertainties within the selection of key cosmological parameters which describe the primordial universe and the big scale constitution formation mechanism.

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Additional resources for 3K, SN’s, Clusters: Hunting the Cosmological Parameters with Precision Cosmology: A JENAM 2002 Workshop Porto, Portugal 3–5 September 2002

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1982, ApJ 253, 785. H. : 1996, MNRAS 278 763. : 1997, Outlying Supernovae - Myth or Reality? UCSB Workshop on SNe, http: I /www. sai. msu. su/ ~megera/ sn/ outsn/. : 2000, A&A 356, L30-L32. I. : 1996, Phys. Rev. E53 4827. I. : 1998, ApJ 496, 454. Bragaglia, A. : 1990, ApJL 365, L 13. Bravo, E. : 1995, ApJ 450, Ll7. , Leibundgut, B. : 2000, A&A 359, 876. V. : 2001, Astron. Lett. 27, 353. Gal- Yam, A. : 2002, astro-ph/0211334. : 1997, in: P. Ruis-Lapuente et al. , Oordrecht, p. 571. G. : 1993, ApJ 412, 731.

In both cases uncertainties remain that presumably could be solved with a better understanding of the physics. For Cepheids the inftuence of metalicity onto the period-luminosity relation requires a solution to increase the confidence of the measured distances. The SNe Ia explosions are largely not understood and predictions on their behaviour in different environments, ages, and configurations need to be resolved. The most powerful evidence for the exquisite distance accuracy provided by SNe Ia is the Hubble diagram in the nearby universe.

An increasing fraction of the y -rays escapes (Leibundgut and Pinto, 1992). , 2001). The exact shape of the light curve is inftuenced by many parameters. The most important ones are the amount of radioactive nickel, the distribution of the radioactive material within the explosion, the kinetic energy of the explosion and the y -ray opacity (Pinto and Eastman, 2000). The time of maximum is special as it allows to measure the amount of 56 Ni synthesised during the explosion. , 2000). , 2002). The sample size is still very small and needs to be enlarged before secure conclusions can be drawn.

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3K, SN’s, Clusters: Hunting the Cosmological Parameters with Precision Cosmology: A JENAM 2002 Workshop Porto, Portugal 3–5 September 2002 by Sébastien Fabbro (auth.), Domingos Barbosa, António José Da Silva, Ana Maria Mourão (eds.)


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