- How well do third-order aperture mass statistics separate E- and B-modes?
- Shi, X.; Joachimi, B.; Schneider, P.
With third-order statistics of gravitational shear it will be possible to extract valuable cosmological information from ongoing and future weak lensing surveys that is not contained in standard second-order statistics because of the non-Gaussianity …
- Assessing the reliability of friends-of-friends groups on the future Javalambre Physics of the Accelerating Universe Astrophysical Survey
- Zandivarez, A.; Díaz-Giménez, E.; Mendes de Oliveira, C.; Ascaso, B.; Benítez, N.; Dupke, R.; Sodré, L.; Irwin, J.
Aims: We have performed a detailed analysis of the ability of the friends-of-friends algorithm to identify real galaxy systems in deep surveys such as the future Javalambre Physics of the Accelerating Universe Astrophysical Survey. Our approach was …
- Uncertainties in grid-based estimates of stellar mass and radius. SCEPtER: Stellar CharactEristics Pisa Estimation gRid
- Valle, G.; Dell’Omodarme, M.; Prada Moroni, P. G.; Degl’Innocenti, S.
Context. The availability of high-quality astero-seismological data provided by satellite missions stimulated the development of several grid-based estimation techniques to determine the stellar masses and radii. Some aspects of the systematic and s …
- Exploring the total Galactic extinction with SDSS BHB stars
- Tian, Hai-Jun; Liu, Chao; Hu, Jing-Yao; Xu, Yang; Chen, Xue-Lei
Aims: We used 12 530 photometrically-selected blue horizontal branch (BHB) stars from the Sloan Digital Sky Survey (SDSS) to estimate the total extinction of the Milky Way at the high Galactic latitudes, RV and AV in each line of sight. Methods: A …
- The Coyote Universe Extended: Precision Emulation of the Matter Power Spectrum
- Heitmann, Katrin; Lawrence, Earl; Kwan, Juliana; Habib, Salman; Higdon, David
Modern sky surveys are returning precision measurements of cosmological statistics such as weak lensing shear correlations, the distribution of galaxies, and cluster abundance. To fully exploit these observations, theorists must provide predictions …
- Reliability of Radio Transients Detected in the Nasu Sky Survey
- Aoki, Takahiro; Tanaka, Tai; Niinuma, Kotaro; Takefuji, Kazuhiro; Kida, Sumiko; Nakao, Ryota; Nomura, Naomi; Sugisawa, Kentaro; Daishido, Tsuneaki
This article reports on the reliability of 11 radio transients detected in the Nasu sky survey. We derived false detection rates and evaluated the statistical significance of each transient source. A single source, labeled WJN J1443+3439, was statis …
- Statistical Searches for Microlensing Events in Large, Non-uniformly Sampled Time-Domain Surveys: A Test Using Palomar Transient Factory Data
- Price-Whelan, Adrian M.; Agüeros, Marcel A.; Fournier, Amanda P.; Street, Rachel; Ofek, Eran O.; Covey, Kevin R.; Levitan, David; Laher, Russ R.; Sesar, Branimir; Surace, Jason
Many photometric time-domain surveys are driven by specific goals, such as searches for supernovae or transiting exoplanets, which set the cadence with which fields are re-imaged. In the case of the Palomar Transient Factory (PTF), several sub-surve …
- Distance Correlation Methods for Discovering Associations in Large Astrophysical Databases
- Martínez-Gómez, Elizabeth; Richards, Mercedes T.; Richards, Donald St. P.
High-dimensional, large-sample astrophysical databases of galaxy clusters, such as the Chandra Deep Field South COMBO-17 database, provide measurements on many variables for thousands of galaxies and a range of redshifts. Current understanding of ga …
- Stochasticity and Persistence of Solar Coronal Mass Ejections
- Telloni, D.; Carbone, V.; Lepreti, F.; Antonucci, E.
The study of the statistical properties of coronal mass ejections (CMEs) reveals that their properties depend on the period of solar activity. In particular, when investigating the origin of the waiting time distribution between CMEs, a significant …
- RUN DMC: An Efficient, Parallel Code for Analyzing Radial Velocity Observations Using N-body Integrations and Differential Evolution Markov Chain Monte Carlo
- Nelson, Benjamin; Ford, Eric B.; Payne, Matthew J.
In the 20+ years of Doppler observations of stars, scientists have uncovered a diverse population of extrasolar multi-planet systems. A common technique for characterizing the orbital elements of these planets is the Markov Chain Monte Carlo (MCMC), …
- Non-linear redundancy calibration
- Marthi, Visweshwar Ram; Chengalur, Jayaram
For radio interferometric arrays with a sufficient number of redundant spacings the multiplicity of measurements of the same sky visibility can be used to determine both the antenna gains as well as the true visibilities. Many of the earlier approac …
- Bayesian model selection for dark energy using weak lensing forecasts
- Debono, Ivan
The next generation of weak lensing probes can place strong constraints on cosmological parameters by measuring the mass distribution and geometry of the low-redshift Universe. We show that a future all-sky tomographic cosmic shear survey with desig …
- PICACS: self-consistent modelling of galaxy cluster scaling relations
- Maughan, B. J.
In this paper, we introduce Physically motivated, Internally Consistent Analysis of Cluster Scaling (PICACS), a detailed model of scaling relations between galaxy cluster masses and their observable properties. This model can be used to constrain si …
- The SWELLS survey – VI. Hierarchical inference of the initial mass functions of bulges and discs
- Brewer, Brendon J.; Marshall, Philip J.; Auger, Matthew W.; Treu, Tommaso; Dutton, Aaron A.; Barnabè, Matteo
The long-standing assumption that the stellar initial mass function (IMF) is universal has recently been challenged by a number of observations. Several studies have shown that a `heavy’ IMF (e.g. with a Salpeter-like abundance of low-mass stars and …
- Two-point correlation function of Wilkinson Microwave Anisotropy Probe 9-yr data
- Gruppuso, A.
Using an optimal estimator for the cosmic microwave background angular power spectra, we compute the temperature two-point correlation function of Wilkinson Microwave Anisotropy Probe 9-yr data at low resolution. Supported by realistic Monte Carlo s …
- Cosmological parameter determination in free-form strong gravitational lens modelling
- Lubini, M.; Sereno, M.; Coles, J.; Jetzer, Ph.; Saha, P.
We develop a novel statistical strong-lensing approach to probe the cosmological parameters by exploiting multiple redshift image systems behind galaxies or galaxy clusters. The method relies on free-form mass inversion of strong lenses and does not …
- On the complementarity of galaxy clustering with cosmic shear and flux magnification
- Duncan, Christopher A. J.; Joachimi, Benjamin; Heavens, Alan F.; Heymans, Catherine; Hildebrandt, Hendrik
With the wealth of forthcoming data from wide-field surveys, it is more important than ever to understand the full range of independent probes of cosmology at our disposal. Here, we explore the potential for galaxy clustering and cosmic shear, separ …
- Orientation of cosmic web filaments with respect to the underlying velocity field
- Tempel, E.; Libeskind, N. I.; Hoffman, Y.; Liivamägi, L. J.; Tamm, A.
The large-scale structure of the Universe is characterized by a web-like structure made of voids, sheets, filaments and knots. The structure of this so-called cosmic web is dictated by the local velocity shear tensor. In particular, the local direct …
- Indications of a sub-linear and non-universal Kennicutt-Schmidt relationship
- Shetty, Rahul; Kelly, Brandon C.; Rahman, Nurur; Bigiel, Frank; Bolatto, Alberto D.; Clark, Paul C.; Klessen, Ralf S.; Konstandin, Lukas K.
We estimate the parameters of the Kennicutt-Schmidt (KS) relationship, linking the star formation rate (ΣSFR) to the molecular gas surface density (Σmol), in the Survey Toward Infrared-Bright Nearby Galaxies sample of nearby disc galaxies using a …
- Bayesian analysis of anisotropic cosmologies: Bianchi VIIh and WMAP
- McEwen, J. D.; Josset, T.; Feeney, S. M.; Peiris, H. V.; Lasenby, A. N.
We perform a definitive analysis of Bianchi VIIh cosmologies with Wilkinson Microwave Anisotropy Probe (WMAP) observations of the cosmic microwave background (CMB) temperature anisotropies. Bayesian analysis techniques are developed to study anisotr …