Baryon Acoustic Oscillations (2009)
Bassett, Bruce A., Hlozek, Renée
Baryon Acoustic Oscillations (BAO) are frozen relics left over from the pre-decoupling universe. They are the standard rulers of choice for 21st century cosmology, providing distance estimates that...
Fisher4Cast Users' Manual (2009)
Bassett, Bruce A., Fantaye, Yabebal, Hlozek, Renée, Kotze, Jacques
This is the Users' Manual for the Fisher Matrix software Fisher4Cast and covers installation, GUI help, command line basics, code flow and data structure, as well as cosmological applications and...
Fisher Matrix Preloaded -- Fisher4Cast (2009)
Bassett, Bruce A., Fantaye, Yabebal, Hlozek, Renée, Kotze, Jacques
The Fisher Matrix is the backbone of modern cosmological forecasting. We describe the Fisher4Cast software: a general-purpose, easy-to-use, Fisher Matrix framework. It is open source, rigorously...
The Seventh Data Release of the Sloan Digital Sky Survey (2009)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Allende Prieto, Carlos, An, Deokkeun, ...
This paper describes the Seventh Data Release of the Sloan Digital Sky Survey (SDSS), marking the completion of the original goals of the SDSS and the end of the phase known as SDSS-II. It includes...
Parkinson, David, Kunz, Martin, Liddle, Andrew R., Bassett, Bruce A., Nichol, Robert C., Vardanyan, Mihran
We extend our study of the optimization of large baryon acoustic oscillation (BAO) surveys to return the best constraints on the dark energy, building on Paper I of this series (Parkinson et al....
The seventh data release of the sloan digital sky survey (2009)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Allende Prieto, Carlos, An, Deokkeun, ...
The "Quantum Mousetrap": Entangled States and Gravitational Waves (2008)
Tamburini, Fabrizio, Bassett, Bruce A., Ungarelli, Carlo
We propose a "thought technique" for detecting Gravitational Waves using Einstein-Podolski-Rosen photon Entangled States. GWs decohere the entangled photon pairs, introduce a relative rotation and...
The sixth data release of the Sloan Digital Sky Survey (2008)
Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Prieto, Carlos Allende, Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...
The sixth data release of the Sloan Digital Sky Survey (2008)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Prieto, Carlos Alende, Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...
The sixth data release of the Sloan Digital Sky Survey (2008)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Prieto, Carlos Alende, Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...
The sixth data release of the sloan digital sky survey (2008)
Adelman-McCarthy, Jennifer K., Agüros, Marcel A., Allam, Sahar S., Allende Prieto, Carlos, Anderson, Kurt S. J., Anderson, Scott F., ...
The sixth data release of the Sloan Digital Sky Survey (2008)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Prieto, Carlos Alende, Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...
The sixth data release of the Sloan Digital Sky Survey (2008)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Prieto, Carlos Alende, Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...
A general test of the Copernican Principle (2007)
Clarkson, Chris, Bassett, Bruce A., Lu, Teresa Hui-Ching
The recent discovery of apparent cosmic acceleration has highlighted the depth of our ignorance of the fundamental properties of nature. It is commonly assumed that the explanation for acceleration...
Is the Dynamics of Tracking Dark Energy Detectable? (2007)
Bassett, Bruce A., Brownstone, Mike, Cardoso, Antonio, Cortês, Marina, Fantaye, Yabebal, Hlozek, Renée, ...
We highlight the unexpected impact of nucleosynthesis and other early universe constraints on the detectability of tracking quintessence dynamics at late times, showing that such dynamics may well be...
Dynamical Dark Energy or Simply Cosmic Curvature? (2007)
Clarkson, Chris, Cortes, Marina, Bassett, Bruce A.
We show that the assumption of a flat universe induces critically large errors in reconstructing the dark energy equation of state at z>~0.9 even if the true cosmic curvature is very small, O(1%) or...
Optimising Baryon Acoustic Oscillation Surveys - I: Testing the concordance LCDM cosmology (2007)
Parkinson, David, Blake, Chris, Kunz, Martin, Bassett, Bruce A., Nichol, Robert C., Glazebrook, Karl
We optimize the design of future spectroscopic redshift surveys for constraining the dark energy via precision measurements of the baryon acoustic oscillations (BAO), with particular emphasis on the...
Optimizing baryon acoustic oscillation surveys I : testing the concordance (2007)
Parkinson, David R., Blake, Christopher A., Kunz, Martin, Bassett, Bruce A., Nichol, Robert C., Glazebrook, Karl, ...
We optimize the design of future spectroscopic redshift surveys for constraining the dark energy via precision measurements of the baryon acoustic oscillations (BAOs), with particular emphasis on the...
Optimizing baryon acoustic oscillation surveys I: testing the concordance (2007)
Parkinson, David, Blake, Chris, Kunz, Martin, Bassett, Bruce A., Nichol, Robert C., Glazebrook, Karl
We optimize the design of future spectroscopic redshift surveys for constraining the dark energy via precision measurements of the baryon acoustic oscillations (BAOs), with particular emphasis on the...
Parkinson, David, Blake, Chris, Kunz, Martin, Bassett, Bruce A., Nichol, Robert C., Glazebrook, Karl
We optimize the design of future spectroscopic redshift surveys for constraining the dark energy via precision measurements of the baryon acoustic oscillations (BAOs), with particular emphasis on the...
Optimizing baryon acoustic oscillation surveys I : testing the concordance (2007)
Parkinson, David R., Blake, Christopher A., Kunz, Martin, Bassett, Bruce A., Nichol, Robert C., Glazebrook, Karl
We optimize the design of future spectroscopic redshift surveys for constraining the dark energy via precision measurements of the baryon acoustic oscillations (BAOs), with particular emphasis on the...
Parkinson, David, Blake, Chris, Kunz, Martin, Bassett, Bruce A., Nichol, Robert C., Glazebrook, Karl
We optimize the design of future spectroscopic redshift surveys for constraining the dark energy via precision measurements of the baryon acoustic oscillations (BAOs), with particular emphasis on the...
Optimizing baryon acoustic oscillation surveys I : testing the concordance (2007)
Parkinson, David R., Blake, Christopher A., Kunz, Martin, Bassett, Bruce A., Nichol, Robert C., Glazebrook, Karl
We optimize the design of future spectroscopic redshift surveys for constraining the dark energy via precision measurements of the baryon acoustic oscillations (BAOs), with particular emphasis on the...
Parkinson, David, Blake, Chris, Kunz, Martin, Bassett, Bruce A., Nichol, Robert C., Glazebrook, Karl
We optimize the design of future spectroscopic redshift surveys for constraining the dark energy via precision measurements of the baryon acoustic oscillations (BAOs), with particular emphasis on the...
Parkinson, David, Blake, Chris, Kunz, Martin, Bassett, Bruce A., Nichol, Robert C., Glazebrook, Karl
We optimize the design of future spectroscopic redshift surveys for constraining the dark energy via precision measurements of the baryon acoustic oscillations (BAOs), with particular emphasis on the...
Parkinson, David, Blake, Chris, Kunz, Martin, Bassett, Bruce A., Nichol, Robert C., Glazebrook, Karl
We optimize the design of future spectroscopic redshift surveys for constraining the dark energy via precision measurements of the baryon acoustic oscillations (BAOs), with particular emphasis on the...
Bayesian Estimation Applied to Multiple Species: Towards cosmology with a million supernovae (2006)
Kunz, Martin, Bassett, Bruce A., Hlozek, Renee
Observed data is often contaminated by undiscovered interlopers, leading to biased parameter estimation. Here we present BEAMS (Bayesian Estimation Applied to Multiple Species) which significantly...
Yamamoto, Kazuhiro, Bassett, Bruce A., Nichol, Robert C., Suto, Yasushi, Yahata, Kazuhiro
We discuss how the baryon acoustic oscillation (BAO) signatures in the galaxy power spectrum can distinguish between modified gravity and the cosmological constant as the source of cosmic...
Universal fitting formulae for baryon oscillation surveys (2006)
Blake, Chris, Parkinson, David, Bassett, Bruce A., Glazebrook, Karl, Kunz, Martin, Nichol, Robert C.
The next generation of galaxy surveys will attempt to measure the baryon oscillations in the clustering power spectrum with high accuracy. These oscillations encode a preferred scale which may be...
Cosmological constraints from the SDSS luminous red galaxies (2006)
Tegmark, Max, Eisenstein, Daniel J., Strauss, Michael A., Weinberg, David H., Blanton, Michael R., Frieman, Joshua A., ...
We measure the large-scale real-space power spectrum P(k) using luminous red galaxies (LRGs) in the Sloan Digital Sky Survey (SDSS) and use this measurement to sharpen constraints on cosmological...
Universal fitting formulae for baryon oscillation surveys (2006)
Blake, Christopher A., Parkinson, David R., Bassett, Bruce A., Glazebrook, Karl, Kunz, Martin, Nichol, Robert C.
The next generation of galaxy surveys will attempt to measure the baryon oscillations in the clustering power spectrum with high accuracy. These oscillations encode a preferred scale which may be...
Cosmological constraints from the SDSS luminous red galaxies (2006)
Tegmark, Max, Eisenstein, Daniel J., Strauss, Michael A., Weinberg, David H., Blanton, Michael R., Frieman, Joshua A., ...
We measure the large-scale real-space power spectrum P(k) using luminous red galaxies (LRGs) in the Sloan Digital Sky Survey (SDSS) and use this measurement to sharpen constraints on cosmological...
Universal fitting formulae for baryon oscillation surveys (2006)
Blake, Chris, Parkinson, David, Bassett, Bruce A., Glazebrook, Karl, Kunz, Martin, Nichol, Robert C.
The next generation of galaxy surveys will attempt to measure the baryon oscillations in the clustering power spectrum with high accuracy. These oscillations encode a preferred scale which may be...
Cosmological constraints from the SDSS luminous red galaxies (2006)
Tegmark, Max, Eisenstein, Daniel J., Strauss, Michael A., Weinberg, David H., Blanton, Michael R., Frieman, Joshua A., ...
We measure the large-scale real-space power spectrum P(k) using luminous red galaxies (LRGs) in the Sloan Digital Sky Survey (SDSS) and use this measurement to sharpen constraints on cosmological...
WFMOS - Sounding the Dark Cosmos (2005)
Bassett, Bruce A., Nichol, Robert C., Eisenstein, Daniel J.
Vast sound waves traveling through the relativistic plasma during the first million years of the universe imprint a preferred scale in the density of matter. We now have the ability to detect this...
Inflation Dynamics and Reheating (2005)
Bassett, Bruce A., Tsujikawa, Shinji, Wands, David
We review the theory of inflation with single and multiple fields paying particular attention to the dynamics of adiabatic and entropy/isocurvature perturbations which provide the primary means of...
A Measurement of the Quadrupole Power Spectrum in the Clustering of the 2dF QSO Survey (2005)
Yamamoto, Kazuhiro, Nakamichi, Masashi, Kamino, Akinari, Bassett, Bruce A., Nishioka, Hiroaki
We report a measurement of the quadrupole power spectrum in the two degree field (2dF) QSO redshift (2QZ) survey. The analysis uses an algorithm parallel to that for the estimation of the standard...
Bassett, Bruce A., Parkinson, David, Nichol, Robert C.
We highlight the flexibility of the IPSO experiment-design framework by contrasting its application to CMB, weak lensing and redshift surveys. We illustrate the latter with a 10 parameter MCMC...
Dark energy reflections in the redshift-space quadrupole (2004)
Yamamoto, Kazuhiro, Bassett, Bruce A., Nishioka, Hiroaki
We show that the redshift-space quadrupole will be a powerful tool for constraining dark energy even if the baryon oscillations are missing from the usual monopole power spectrum and even if bias is...
Testing for double inflation with WMAP (2004)
Parkinson, David, Tsujikawa, Shinji, Bassett, Bruce A., Amendola, Luca
With the WMAP data we can now begin to test realistic models of inflation involving multiple scalar fields. These naturally lead to correlated adiabatic and isocurvature (entropy) perturbations with...
The essence of quintessence and the cost of compression (2004)
Bassett, Bruce A., Corasaniti, Pier Stefano, Kunz, Martin
Standard two-parameter compressions of the infinite dimensional dark energy model space show crippling limitations even with current SN-Ia data. Firstly they cannot cope with rapid evolution - the...
Eyes Wide Open - Optimising Cosmological Surveys in a Crowded Market (2004)
Optimising the major next-generation cosmological surveys (such as {\em SNAP, KAOS etc...}) is a key problem given our ignorance of the physics underlying cosmic acceleration and the plethora of...
A Tale of Two Distances (2004)
Kunz, Martin, Bassett, Bruce A.
There are two basic ways to measure physical distances in cosmology: One based on standard candles and one based on standard rulers. Comparing current data for each method allows us to rule out...
Parkinson, David, Bassett, Bruce A., Copeland, Edmund J., Corasaniti, Pier-Stefano, Kunz, Martin
Dark energy affects the CMB through its perturbations and affects both CMB and Sn-Ia through its background evolution. Using recent CMB and Sn-Ia data sets, together with the most general...
Cosmic distance-duality as probe of exotic physics and acceleration (2003)
Bassett, Bruce A., Kunz, Martin
In cosmology, distances based on standard candles (e.g. supernovae) and standard rulers (e.g. baryon oscillations) agree as long as three conditions are met: (1) photon number is conserved, (2)...
Cosmic acceleration vs axion-photon mixing (2003)
Bassett, Bruce A., Kunz, Martin
Axion-photon mixing has been proposed as an alternative to acceleration as the explanation for supernovae dimming. We point out that the loss of photons due to this mixing will induce a strong...
Radiative constraints on brane quintessence (2003)
Seery, David, Bassett, Bruce A.
We investigate the constraints on quintessence arising from both renormalisable and non-renormalisable couplings where the 5d Planck mass is around the TeV scale. The quintessence field vacuum...
Mapping the Dark Energy with Varying Alpha (2003)
Parkinson, David, Bassett, Bruce A., Barrow, John D.
Cosmological dark energy is a natural source of variation of the fine structure constant. Using a model-independent approach we show that once general assumptions about the alpha-varying interactions...
Aspects of String-Gas Cosmology at Finite Temperature (2003)
Bassett, Bruce A., Borunda, Monica, Serone, Marco, Tsujikawa, Shinji
We study string-gas cosmology in dilaton gravity, inspired by the fact that it naturally arises in a string theory context. Our main interest is the thermodynamical treatment of the string-gas and...
Aspects of string-gas cosmology at finite temperature (2003)
Bassett, Bruce A., Borunda, Monica, Serone, Marco, Tsujikawa, Shinji
We study string-gas cosmology in dilaton gravity, inspired by the fact that it naturally arises in a string theory context. Our main interest is the thermodynamical treatment of the string-gas and...
Condensate cosmology -- dark energy from dark matter (2002)
Bassett, Bruce A., Kunz, Martin, Parkinson, David, Ungarelli, Carlo
Imagine a scenario in which the dark energy forms via the condensation of dark matter at some low redshift. The Compton wavelength therefore changes from small to very large at the transition, unlike...
Did the dark energy always have a large Compton wavelength? (2002)
Bassett, Bruce A., Kunz, Martin, Parkinson, David, Ungarelli, Carlo
Until now all well-studied dark energy models proposed have very large Compton wavelengths, $\lambda_c > 100 Mpc$ at all time and hence show no clustering on small scales. Evidence against this would...
Correlation-consistency cartography of the double inflation landscape (2002)
Tsujikawa, Shinji, Parkinson, David, Bassett, Bruce A.
We show explicitly some exciting features of double-inflation: (i) it can often lead to strongly correlated adiabatic and entropy (isocurvature) power spectra. (ii) The two-field slow-roll...
When can preheating affect the CMB? (2002)
Tsujikawa, Shinji, Bassett, Bruce A.
We discuss the principles governing the selection of inflationary models for which preheating can affect the CMB. This is a (fairly small) subset of those models which have non-negligible...
A late-time transition in the cosmic dark energy? (2002)
Bassett, Bruce A., Kunz, Martin, Silk, Joseph, Ungarelli, Carlo
We study constraints from the latest CMB, large scale structure (2dF, Abell/ACO, PSCz) and SN1a data on dark energy models with a sharp transition in their equation of state, w(z). Such a transition...
Fermion production from preheating-amplified metric perturbations (2002)
Bassett, Bruce A., Peloso, Marco, Sorbo, Lorenzo, Tsujikawa, Shinji
We study gravitational creation of light fermions in the presence of classical scalar metric perturbations about a flat Friedmann-Lemaitre- Robertson-Walker (FLRW) background. These perturbations can...
Fermion production from preheating-amplified metric perturbations (2001)
Bassett, Bruce A., Peloso, Marco, Sorbo, Lorenzo, Tsujikawa, Shinji
We study gravitational creation of light fermions in the presence of classical scalar metric perturbations about a flat Friedmann-Lemaitre- Robertson-Walker (FLRW) background. These perturbations can...
Preheating - cosmic magnetic dynamo ? (2000)
Bassett, Bruce A., Pollifrone, Giuseppe, Tsujikawa, Shinji, Viniegra, Fermin
We study the amplification of large-scale magnetic fields during preheating and inflation in several different models. Preheating can resonantly amplify seed fields on cosmological scales. In the...
Adiabatic and entropy perturbations from inflation (2000)
Gordon, Christopher, Wands, David, Bassett, Bruce A., Maartens, Roy
We study adiabatic (curvature) and entropy (isocurvature) perturbations produced during a period of cosmological inflation that is driven by multiple scalar fields with an arbitrary interaction...
Inflationary preheating and primordial black holes (2000)
Bassett, Bruce A., Tsujikawa, Shinji
Preheating after inflation may over-produce primordial black holes (PBH's) in many regions of parameter space. As an example we study two-field models with a massless self-interacting inflaton,...
Multi-field fermionic preheating (2000)
Tsujikawa, Shinji, Bassett, Bruce A., Viniegra, Fermin
Fermion creation during preheating in the presence of multiple scalar fields exhibits a range of interesting behaviour relevant to estimating post-inflation gravitino abundances. We present...
Detection of gravitational waves with quantum encryption technology (2000)
Tamburini, Fabrizio, Bassett, Bruce A., Ungarelli, Carlo
We propose a new technique for detecting gravitational waves using Quantum Entangled STate (QUEST) technology. Gravitational waves reduce the non-locality of correlated quanta controlled by Bell's...
Chi-Variable-Speed-of-Light Cosmologies (2000)
Liberati, Stefano, Bassett, Bruce A., Molina-Paris, Carmen, Visser, Matt
Variable-Speed-of-Light (VSL) cosmologies are currently attracting much interest as a possible alternative to cosmological inflation. We discuss the fundamental geometrodynamic aspects of VSL...
Geometrodynamics of Variable-Speed-of-Light Cosmologies (2000)
Bassett, Bruce A., Liberati, Stefano, Molina-Paris, Carmen, Visser, Matt
This paper is dedicated to the memory of Dennis Sciama. Variable-Speed-of-Light (VSL) cosmologies are currently attracting interest as an alternative to inflation. We investigate the fundamental...
Geometrodynamics of variable-speed-of-light cosmologies (2000)
Bassett, Bruce A., Liberati, Stefano, Molina-Paris, Carmen, Visser, Matt
This paper is dedicated to the memory of Dennis Sciama. Variable-Speed-of-Light (VSL) cosmologies are currently attracting interest as an alternative to inflation. We investigate the fundamental...
Restoring the sting to metric preheating (1999)
Bassett, Bruce A., Gordon, Christopher, Maartens, Roy, Kaiser, David I.
The relative growth of field and metric perturbations during preheating is sensitive to initial conditions set in the preceding inflationary phase. Recent work suggests this may protect super-Hubble...
Massless Metric Preheating (1999)
Bassett, Bruce A., Viniegra, F.
Can super-Hubble metric perturbations be amplified exponentially during preheating ? Yes. An analytical existence proof is provided by exploiting the conformal properties of massless inflationary...
Metric preheating and limitations of linearized gravity (1999)
Bassett, Bruce A., Tamburini, Fabrizio, Kaiser, David I., Maartens, Roy
Recently it has become clear that the resonant amplification of quantum field fluctuations at preheating must be accompanied by resonant amplification of scalar metric perturbations, since the two...
General Relativistic effects in preheating (1998)
Bassett, Bruce A., Kaiser, David I., Maartens, Roy
General relativistic effects in the form of metric perturbations are usually neglected in the preheating era that follows inflation. We argue that in realistic multi-field models these effects are in...
Inflationary Reheating in Grand Unified Theories (1998)
Bassett, Bruce A., Tamburini, Fabrizio
Grand unified theories may display multiply interacting fields with strong coupling dynamics. This poses two new problems: (1) What is the nature of chaotic reheating after inflation, and (2) How is...
Resonant Gravitational Wave Amplification - Axion and Inflaton (1997)
We demonstrate the parametric amplification of the stochastic gravitational wave background during inflationary reheating and during axion/moduli oscillations. This amplification enhances the...
Inflationary Reheating Classes via Spectral Methods (1997)
Inflationary reheating is almost completely controlled by the Floquet indices, $\mu_k$. Using spectral theory we demonstrate that the stability bands (where $\mu_k = 0$) of the Mathieu and Lam\'e...
Geometric Reheating after Inflation (1997)
Bassett, Bruce A., Liberati, Stefano
Inflationary reheating via resonant production of non-minimally coupled scalar particles with only gravitational coupling is shown to be extremely strong, exhibiting a negative coupling instability...
The Preheating - Gravitational Wave Correspondence (1997)
The gravitational wave equations form a parametric resonance system during oscillatory reheating after inflation, when cast in terms of the electric and magnetic parts of the Weyl tensor. This is in...
Gravito-electromagnetism (1997)
Maartens, Roy, Bassett, Bruce A.
We develop and apply a fully covariant 1+3 electromagnetic analogy for gravity. The free gravitational field is covariantly characterized by the Weyl gravito-electric and gravito-magnetic spatial...