Search Results - "Sandvik, H. B."

Combined reconstruction of weak and strong lensing data with wslap by Diego, J. M., Tegmark, M., Protopapas, P., Sandvik, H. B.

“…We describe a method to estimate the mass distribution of a gravitational lens and the position of the sources from combined strong and weak lensing data. The…”
Get full text

Non-parametric inversion of strong lensing systems by Diego, J. M., Protopapas, P., Sandvik, H. B., Tegmark, M.

“…We revisit the issue of non-parametric gravitational lens reconstruction and present a new method to obtain the cluster mass distribution using strong lensing…”
Get full text

Non-parametric mass reconstruction of A1689 from strong lensing data with the Strong Lensing Analysis Package by Diego, J. M., Sandvik, H. B., Protopapas, P., Tegmark, M., Benítez, N., Broadhurst, T.

“…We present the mass distribution in the central area of the cluster A1689 by fitting over 100 multiply lensed images with the non-parametric Strong Lensing…”
Get full text

Why does the clustering of haloes depend on their formation history? by Sandvik, H. B., Möller, O., Lee, J., White, S. D. M.

“…We discuss in the framework of the excursion set formalism a recent discovery from N-body simulations that the clustering of haloes of given mass depends on…”
Get full text

A cosmological tale of two varying constants by Barrow, John D., Magueijo, João, Sandvik, Håvard B.

“…We formulate a simple extension of general relativity which incorporates spacetime variations in the Newtonian gravitation ‘constant’, G, and the fine…”
Get full text

Magnetohydrodynamics in the inflationary universe by Brevik, I., Sandvik, H. B.

Get full text

The complete bispectrum of COBE-DMR four-year maps by Sandvik, Håvard B., Magueijo, João

“…We extend a previous bispectrum analysis of the COBE-DMR four-year maps, allowing for the presence of correlations between all possible angular scales. For…”
Get full text

Combined reconstruction of weak and strong lensing data withwslap by Diego, J M, Tegmark, M, Protopapas, P, Sandvik, H B

“…We describe a method to estimate the mass distribution of a gravitational lens and the position of the sources from combined strong and weak lensing data. The…”
Get full text

Combined reconstruction of weak and strong lensing data with wslap by Diego, J. M., Tegmark, M., Protopapas, P., Sandvik, H. B.

Get full text

CMBFIT: Rapid WMAP likelihood calculations with normal parameters by Sandvik, Håvard B., Tegmark, Max, Wang, Xiaomin, Zaldarriaga, Matias

Get full text

Why does the clustering of haloes depend on their formation history? by Sandvik, H. B., Möller, O., Lee, J., White, S. D. M.

Get full text

Non-parametric inversion of strong lensing systems by Diego, J. M., Protopapas, P., Sandvik, H. B., Tegmark, M.

Get full text

A simple cosmology with a varying fine structure constant by Sandvik, Håvard Bunes, Barrow, John D, Magueijo, João

“…We investigate the cosmological consequences of a theory in which the electric charge e can vary. In this theory the fine structure "constant," alpha, remains…”
Get full text

Non-parametric mass reconstruction of A1689 from strong lensing data with the Strong Lensing Analysis Package by Diego, J. M., Sandvik, H. B., Protopapas, P., Tegmark, M., Benítez, N., Broadhurst, T.

Get full text

Non-parametric mass reconstruction of A1689 from strong lensing data with the Strong Lensing Analysis Package: Mass reconstruction of A1689 by Diego, J. M., Sandvik, H. B., Protopapas, P., Tegmark, M., Benítez, N., Broadhurst, T.

Get full text

Is it e or is it c? Experimental tests of varying alpha by Magueijo, João, Barrow, John D, Sandvik, Håvard Bunes

“…Is the recent evidence for a time-varying fine structure ‘constant’ α to be interpreted as a varying e, c, ℏ, or a combination thereof? We consider the…”
Get full text

Anthropic reasons for nonzero flatness and Λ by Barrow, John D., Sandvik, Håvard Bunes, Magueijo, João

Get full text

The end of unified dark matter? by Sandvik, Håvard B., Tegmark, Max, Zaldarriaga, Matias, Waga, Ioav

Get full text

The Complete Bispectrum of COBE-DMR Four Year Maps by Sandvik, H. B, Magueijo, J

“…Mon.Not.Roy.Astron.Soc. 325 (2001) 463 We extend a previous bispectrum analysis of the COBE-DMR 4 year maps, allowing for the presence of correlations between…”
Get full text

Magnetohydrodynamics in the Inflationary Universe by Brevik, I, Sandvik, H. B

“…Phys.Rev.D61:083505,2000 Magnetohydrodynamic (MHD) waves are analysed in the early Universe, in the inflationary era, assuming the Universe to be filled with a…”
Get full text