1.2k citations · 8.5k across the 143 of their papers we have counts for
10 papers · 1 filter
The Lyman-continuum photon production efficiency in the high-redshift Universe
Stephen M. Wilkins, Yu Feng, Tiziana Di Matteo +4
The Lyman Continuum photon production efficiency () is a critical ingredient for inferring the number of photons available to reionise the intergalactic medium. To est…
Intrinsic alignments of disk and elliptical galaxies in the MassiveBlack-II and Illustris simulations
Ananth Tenneti, Rachel Mandelbaum, Tiziana Di Matteo
We study the shapes and intrinsic alignments of disks and elliptical galaxies in the MassiveBlack-II (MBII) and Illustris cosmological hydrodynamic simulations, with volumes of $(1…
Measuring multiscaling in financial time-series
Riccardo Junior Buonocore, Tomaso Aste, Tiziana Di Matteo
We discuss the origin of multiscaling in financial time-series and investigate how to best quantify it. Our methodology consists in separating the different sources of measured mul…
Luminosity function of [OII] emission-line galaxies in the MassiveBlack-II simulation
KwangHo Park, Tiziana Di Matteo, Shirley Ho +4
We examine the luminosity function (LF) of [OII] emission-line galaxies in the high-resolution cosmological simulation MassiveBlack-II (MBII). From the spectral energy distribution…
Time-dependent scaling patterns in high frequency financial data
Noemi Nava, Tiziana Di Matteo, Tomaso Aste
We measure the influence of different time-scales on the dynamics of financial market data. This is obtained by decomposing financial time series into simple oscillations associate…
Multi-scaling of wholesale electricity prices
Francesco Caravelli, James Requeima, Cozmin Ududec +3
We empirically analyze the most volatile component of the electricity price time series from two North-American wholesale electricity markets. We show that these time series exhibi…
Galaxy shapes and alignments in the MassiveBlack-II hydrodynamic and dark matter-only simulations
Ananth Tenneti, Rachel Mandelbaum, Tiziana Di Matteo +2
We compare the shapes and intrinsic alignments of galaxies in the MassiveBlack-II cosmological hydrodynamic simulation (MBII) to those in a dark matter-only (DMO) simulation perfor…
Network Filtering for Big Data: Triangulated Maximally Filtered Graph
Guido Previde Massara, T. Di Matteo, Tomaso Aste
We propose a network-filtering method, the Triangulated Maximally Filtered Graph (TMFG), that provides an approximate solution to the Weighted Maximal Planar Graph problem. The und…
The formation of Milky Way-mass disk galaxies in the first 500 million years of a cold dark matter universe
Yu Feng, Tiziana Di Matteo, Rupert Croft +4
Whether among the myriad tiny proto-galaxies there exists a population with similarities to present day galaxies is an open question. We show, using BlueTides, the first hydrodynam…
Anomalous volatility scaling in high frequency financial data
Noemi Nava, T. Di Matteo, Tomaso Aste
Volatility of intra-day stock market indices computed at various time horizons exhibits a scaling behaviour that differs from what would be expected from fractional Brownian motion…