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36 papers · 2 filters
Chandra deep observation of XDCP J0044.0-2033, a massive galaxy cluster at z>1.5
P. Tozzi, J. S. Santos, M. J. Jee +11
We report the analysis of the Chandra observation of XDCP J0044.0-2033, a massive, distant (z=1.579) galaxy cluster discovered in the XDCP survey. The total exposure time of 380 ks…
Biased Tracers and Time Evolution
Mehrdad Mirbabayi, Fabian Schmidt, Matias Zaldarriaga
We study the effect of time evolution on galaxy bias. We argue that at any order in perturbations, the galaxy density contrast can be expressed in terms of a finite set of locally…
Cosmological Constraints From Weak Lensing Peak Statistics With CFHT Stripe 82 Survey
Xiangkun Liu, Chuzhong Pan, Ran Li +11
We derived constraints on cosmological parameters using weak lensing peak statistics measured on the of the Canada-France-Hawaii Telescope Stripe 82 Survey (C…
What is the probability that direct detection experiments have observed Dark Matter?
Nassim Bozorgnia, Thomas Schwetz
In Dark Matter direct detection we are facing the situation of some experiments reporting positive signals which are in conflict with limits from other experiments. Such conclusion…
Using cosmic voids to distinguish f(R) gravity in future galaxy surveys
Paul Zivick, P. M. Sutter, Benjamin D. Wandelt +2
We use properties of void populations identified in -body simulations to forecast the ability of upcoming galaxy surveys to differentiate models of f(R) gravity from \lcdm~cosmo…
Correlation between star formation activity and electron density of ionized gas at z=2.5
Rhythm Shimakawa, Tadayuki Kodama, Charles C. Steidel +7
In the redshift interval of , the physical conditions of the inter-stellar medium (ISM) in star-forming galaxies are likely to be different from those in the local Universe…