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- Adi Nusser
- 2008

We derive the asymptotic mass profile near the collapse center of an initial spherical density perturbation, δ ∝ M, of collision-less particles with non-radial motions. We show that angular momenta introduced at the initial time do not affect the mass profile. Alternatively, we consider a scheme in which a particle moves on a radial orbit until it reaches… (More)

- Zacharia Myers, Adi Nusser
- 2008

Assuming the dark matter is made entirely from neutralinos, we re-visit the role of their annihilation on the temperature of diffuse gas in the high redshift universe. We consider neutralinos of particle mass 36 GeV and 100 GeV, respectively. The former is able to produce ∼ 7 ee particles per annihilation through the fremionic channel, and the latter ∼ 53… (More)

- Adi Nusser
- 2016

An interesting test of Einstein’s equivalence principle (EEP) relies on the observed lag in arrival times of photons emitted from extragalactic transient sources. Attributing the lag between photons of different energies to the gravitational potential of the Milky Way (MW), several authors derive new constraints on deviations from EEP. It is shown here that… (More)

- Karl B Fisher, Adi Nusser
- 1995

We examine the anisotropies in the power spectrum by the mapping of real to red-shift space. Using the Zel'dovich approximation, we obtain an analytic expression for the nonlinear redshift space power spectrum in the distant observer limit. For a given unbiased galaxy distribution in redshift space, the anisotropies in the power spectrum depend on the… (More)

- Adi Nusser, Joseph Silk, Arif Babul
- 2006

Existing models invoking AGN activty to resolve the cooling flow conundrum in galaxy clusters focus exclusively on the role of the central galaxy. Such models require finetuning of highly uncertain microscopic transport properties to distribute the thermal thermal over the entire cluster cooling core. We propose that the ICM is instead heated by multiple,… (More)

- P J E Peebles, Adi Nusser
- Nature
- 2010

The great advances in the network of cosmological tests show that the relativistic Big Bang theory is a good description of our expanding Universe. However, the properties of nearby galaxies that can be observed in greatest detail suggest that a better theory would describe a mechanism by which matter is more rapidly gathered into galaxies and groups of… (More)

- Luiz N. da Costa, Adi Nusser, Wolfram Freudling, Riccardo Giovanelli, Martha P. Hayne
- 1997

We present a comparison between the peculiar velocity fields measured from the SFI all-sky Sbc-Sc Tully-Fisher catalog and that derived from the IRAS 1.2 Jy redshift survey galaxy distribution. The analysis is based on the expansion of these data in redshift space using smooth orthonormal functions and is performed using low and high resolution expansions,… (More)

We present predictions for the reionization of the intergalactic medium (IGM) by stars in high-redshift galaxies, based on a semi-analytic model of galaxy formation. We calculate ionizing luminosities of galaxies, including the effects of absorption by interstellar gas and dust on the escape fraction fesc, and follow the propagation of the ionization fronts… (More)

We present extensive tests of the Fast Action Method (FAM) for recovering the past orbits of mass tracers in an expanding universe from their redshift-space coordinates at the present epoch. The tests focus on the reconstruction of present-day peculiar velocities using mock catalogs extracted from high resolution N -body simulations. The method allows for a… (More)

- Adi Nusser
- 2008

We examine the implications of Modified Newtonian Dynamics (MOND) on the large scale structure in a Friedmann-Robertson-Walker universe. We employ a “Jeans swindle” to write a MOND-type relationship between the fluctuations in the density and the gravitational force, g. In linear Newtonian theory, |g| decreases with time and eventually becomes < g0 , the… (More)