Simulating Supersonic Turbulence in Galaxy Outflows (2010)
Scannapieco, Evan, Brüggen, Marcus
We present three-dimensional, adaptive mesh simulations of dwarf galaxy out- flows driven by supersonic turbulence. Here we develop a subgrid model to track not only the thermal and bulk velocities...
Thermonuclear .Ia Supernovae from Helium Shell Detonations: Explosion Models and Observables (2010)
Shen, Ken J., Kasen, Daniel, Weinberg, Nevin N., Bildsten, Lars, Scannapieco, Evan
During the early evolution of an AM CVn system, helium is accreted onto the surface of a white dwarf under conditions suitable for unstable thermonuclear ignition. The turbulent motions induced by...
LSST Science Book, Version 2.0 (2009)
Abell, LSST Science Collaborations: Paul A., Allison, Julius, Anderson, Scott F., Andrew, John R., Angel, J. Roger P., Armus, Lee, ...
A survey that can cover the sky in optical bands over wide fields to faint magnitudes with a fast cadence will enable many of the exciting science opportunities of the next decade. The Large Synoptic...
Prompt Ia Supernovae Are Significantly Delayed (2009)
Raskin, Cody, Scannapieco, Evan, Rhoads, James, Della Valle, Massimo
The time delay between the formation of a population of stars and the onset of type Ia supernovae (SNe Ia) sets important limits on the masses and nature of SN Ia progenitors. Here we use a new...
The Role of Turbulence in AGN Self-Regulation in Galaxy Clusters (2009)
Scannapieco, Evan, Brüggen, Marcus
Cool cores of galaxy clusters are thought to be heated by low-power active galactic nuclei (AGN), whose accretion is regulated by feedback. However, the interaction between the hot gas ejected by the...
Evolution of X-ray Cavities in Galaxy Clusters (2009)
Brüggen, Marcus, Scannapieco, Evan, Heinz, Sebastian
The physics of X-ray cavities in galaxy clusters is constrained by their observed morphological evolution, which depends on such poorly-understood properties as the turbulent density field and...
Spectra and Light Curves of Failed Supernovae (2009)
Fryer, Chris L., Brown, Peter J., Bufano, Filomena, Dahl, Jon A., Fontes, Christopher J., Frey, Lucille H., ...
Astronomers have proposed a number of mechanisms to produce supernova explosions. Although many of these mechanisms are now not considered primary engines behind supernovae, they do produce...
On Type Ia Supernovae From The Collisions of Two White Dwarfs (2009)
Raskin, Cody, Timmes, F. X., Scannapieco, Evan, Diehl, Steven, Fryer, Chris
We explore collisions between two white dwarfs as a pathway for making Type Ia Supernovae (SNIa). White dwarf number densities in globular clusters allow 10-100 redshift
A Physical Model of Lyman Alpha Emitters (2009)
Tilvi, Vithal, Malhotra, Sangeeta, Rhoads, James E., Scannapieco, Evan, Thacker, Robert J., Iliev, Ilian T., ...
We present a simple physical model for populating dark matter halos with Lyman Alpha Emiiters(LAEs) and predict the physical properties of LAEs at z~3-7. The central tenet of this model is that the...
The contribution of the IGM and minihalos to the 21 cm signal of reionization (2009)
Yue, Bin, Ciardi, Benedetta, Scannapieco, Evan, Chen, Xuelei
We study the statistical properties of the cosmological 21 cm signal from both the intergalactic medium (IGM) and minihalos, using a reionization simulation that includes a self--consistent treatment...
Globular Clusters as Testbeds for Type Ia Supernovae (2009)
Pfahl, Eric, Scannapieco, Evan, Bildsten, Lars
Fundamental mysteries remain regarding the physics of Type Ia supernovae (SNIa) and their stellar progenitors. We argue here that important clues to these questions may emerge by the identification...
Cooke, Jeff, Cooray, Asantha, Chary, Ranga-Ram, Bromm, Volker, Cen, Renyue, Ellis, Richard, ...
The cosmic dark ages are the mysterious epoch during which the pristine gas began to condense and ultimately form the first stars. Although these beginnings have long been a topic of theoretical...
Evolution of X-ray cavities (2009)
Brüggen, Marcus, Scannapieco, Evan, Heinz, Sebastian
A wide range of recent observations have shown that AGN-driven cavities may provide the energy source that balances the cooling observed in the centres of cool-core galaxy clusters. One tool for...
Power spectrum for the small-scale Universe (2009)
Widrow, Lawrence M., Elahi, Pascal J., Thacker, Robert J., Richardson, Mark, Scannapieco, Evan
The first objects to form in a cold dark matter universe present a daunting challenge for models of structure formation. In the ultra small-scale limit, CDM structures form nearly simultaneously...
The contribution of the IGM and minihaloes to the 21-cm signal of reionization (2009)
Yue, Bin, Ciardi, Benedetta, Scannapieco, Evan, Chen, Xuelei
Spectra and light curves of failed supernovae (2009)
Fryer, Chris L., Brown, Peter J., Bufano, Filomena, Dahl, Jon A., Fontes, Christopher J., Frey, Lucille H., ...
Predictions of Quasar Clustering: Redshift, Luminosity and Selection Dependence (2008)
Thacker, Robert J., Scannapieco, Evan, Couchman, H. M. P., Richardson, Mark
We show that current clustering observations of quasars and luminous AGN can be explained by a merger model augmented by feedback from outflows. Using numerical simulations large enough to study...
Using Spatial Distributions to Constrain Progenitors of Supernovae and Gamma Ray Bursts (2008)
Raskin, Cody, Scannapieco, Evan, Rhoads, James, Della Valle, Massimo
We carry out a comprehensive theoretical examination of the relationship between the spatial distribution of optical transients and the properties of their progenitor stars. By constructing analytic...
Subgrid Modeling of AGN-Driven Turbulence in Galaxy Clusters (2008)
Scannapieco, Evan, Brüggen, Marcus
Hot, underdense bubbles powered by active galactic nuclei (AGN) are likely to play a key role in halting catastrophic cooling in the centers of cool-core galaxy clusters. We present three-dimensional...
http://pos.sissa.it / Self-Enrichment of Merging Stellar Clusters (2008)
Natalie R. Hinkel, Evan Scannapieco, F. X. Timmes, Natalie R. Hinkel
We examine the mass-metallicity trend of nearby z ∼ 0.1 galaxies presented by Tremonti et al. (2004) and compare it to detailed chemical evolution models. Our study was done in order to identify...
The effect of minihaloes on cosmic reionization (2007)
Ciardi, Benedetta, Scannapieco, Evan, Stoehr, Felix, Ferrara, Andrea, Iliev, Ilian T., Shapiro, Paul R.
One of the most debated issues in the theoretical modeling of cosmic reionization is the impact of small-mass gravitationally-bound structures. We carry out the first numerical investigation of the...
The Spatial Distribution of the Galactic First Stars. I. High-Resolution N-Body Approach (2007)
Scannapieco, Evan, Kawata, Daisuke, Brook, Chris B., Schneider, Raffaella, Ferrara, Andrea, Gibson, Brad K.
We study the spatial distribution of Galactic metal-free stars by combining an extremely high-resolution (7.8 X 10^5 solar masses per particle) Cold Dark Matter N-body simulation of the Milky-Way...
Detecting primordial stars (2007)
Scannapieco, Evan, Ferrara, Andrea, Heger, Alexander, Madau, Piero, Schneider, Raffaella, Woosley, Stan
We study the detectability of primordial metal-free stars. Cosmological enrichment is a local process that takes place over an extended redshift range. While the duration of this transition depends...
Measuring AGN Feedback with the Sunyaev-Zel'dovich Effect (2007)
Scannapieco, Evan, Thacker, Robert J., Couchman, H. M. P.
One of the most important and poorly-understood issues in structure formation is the role of outflows driven by active galactic nuclei (AGN). Using large-scale cosmological simulations, we compute...
The Spatial Distribution of the Galactic First Stars II: SPH Approach (2006)
Brook, Chris B., Kawata, Daisuke, Scannapieco, Evan, Martel, Hugo, Gibson, Brad K.
We use cosmological, chemo-dynamical, smoothed particle hydrodynamical simulations of Milky-Way-analogue galaxies to find the expected present-day distributions of both metal-free stars that formed...
The Spatial Distribution of the Galactic First Stars I: High-Resolution N-body Approach (2006)
Scannapieco, Evan, Kawata, Daisuke, Brook, Chris B., Schneider, Raffaella, Ferrara, Andrea, Gibson, Brad K.
We study the spatial distribution of Galactic metal-free stars by combining an extremely high-resolution (7.8 X 10^5 solar masses per particle) Cold Dark Matter N-body simulation of the Milky-Way...
Pair-Production Supernovae: Theory and Observation (2006)
I review the physical properties of pair-production supernovae (PPSNe) as well as the prospects for them to be constrained observationally. In very massive (140-260 solar mass) stars, much of the...
Quasars: What turns them off? (2006)
Thacker, Robert J., Scannapieco, Evan, Couchman, H. M. P.
(Abridged) We explore the idea that the anti-hierarchical turn-off observed in the quasar population arises from self-regulating feedback, via an outflow mechanism. Using a detailed hydrodynamic...
The spatial distribution of the Galactic first stars I : high-resolution N-body approach (2006)
Scannapieco, Evan, Kawata, Daisuke, Brook, Chris B., Schneider, Raffaella, Ferrara, Andrea, Gibson, Brad K., ...
Abstract not available.
The spatial distribution of the Galactic first stars I : high-resolution N-body approach (2006)
Scannapieco, Evan, Kawata, Daisuke, Brook, Chris B., Schneider, Raffaella, Ferrara, Andrea, Gibson, Brad K.
Abstract not available.
The spatial distribution of the Galactic first stars I : high-resolution N-body approach (2006)
Scannapieco, Evan, Kawata, Daisuke, Brook, Chris B., Schneider, Raffaella, Ferrara, Andrea, Gibson, Brad K.
Abstract not available.
The spatial distribution of the Galactic first stars I : high-resolution N-body approach (2006)
Scannapieco, Evan, Kawata, Daisuke, Brook, Chris B., Schneider, Raffaella, Ferrara, Andrea, Gibson, Brad K.
Abstract not available.
The spatial distribution of the Galactic first stars I : high-resolution N-body approach (2006)
Scannapieco, Evan, Kawata, Daisuke, Brook, Chris B., Schneider, Raffaella, Ferrara, Andrea, Gibson, Brad K.
Abstract not available.
The spatial distribution of the Galactic first stars I : high-resolution N-body approach (2006)
Scannapieco, Evan, Kawata, Daisuke, Brook, Chris B., Schneider, Raffaella, Ferrara, Andrea, Gibson, Brad K.
Abstract not available.
AGN Feedback Causes Downsizing (2005)
Scannapieco, Evan, Silk, Joseph, Bouwens, Rychard
We study the impact of outflows driven by active galactic nuclei (AGN) on galaxy formation. Outflows move into the surrounding intergalactic medium (IGM) and heat it sufficiently to prevent it from...
Detecting Primordial Stars (2005)
Scannapieco, Evan, Ferrara, Andrea, Heger, Alexander, Madau, Piero, Schneider, Raffaella, Woosley, Stan
We study the detectability of primordial metal-free stars. Cosmological enrichment is a local process that takes place over an extended redshift range. While the duration of this transition depends...
Relativistic Ionization Fronts (2005)
Shapiro, Paul R., Iliev, Ilian T., Alvarez, Marcelo A., Scannapieco, Evan
We derive the equations for the propagation of relativistic ionization fronts in both static and moving gases. We focus on the supersonic R-type phase that occurs right after a source turns on, and...
The Type Ia Supernova Rate (2005)
Scannapieco, Evan, Bildsten, Lars
We explore the idea that the Type Ia supernovae (SNe Ia) rate consists of two components: a prompt piece that is proportional to the star formation rate (SFR) and an extended piece that is...
The Detectability of Pair-Production Supernovae at z < 6 (2005)
Scannapieco, Evan, Madau, Piero, Woosley, Stan, Heger, Alexander, Ferrara, Andrea
Nonrotating, zero metallicity stars with initial masses 140 < M < 260 solar masses are expected to end their lives as pair-production supernovae (PPSNe), in which an electron-positron pair-production...
Iliev, Ilian T., Shapiro, Paul R., Scannapieco, Evan, Mellema, Garrelt, Alvarez, Marcelo A., Raga, Alejandro C., ...
The propagation of cosmological ionization fronts (I-fronts) during reionization is strongly influenced by small-scale structure. Here we summarize our recent attemps to understand the effect of this...
I study the relationship between the spatial distribution of intergalactic metals and the masses and ejection energies of the sources that produced them. Over a wide range of models, metal enrichment...
Suppression of Dwarf Galaxy Formation by Cosmic Shocks (2004)
Sigward, Filippo, Ferrara, Andrea, Scannapieco, Evan
We carry out a numerical study of the effects of supernova-driven shocks on galaxy formation at z=9. These "cosmic explosions" can have a significant impact on galaxies forming nearby. We study such...
The Impact of Small-Scale Structure on Cosmological Ionization Fronts and Reionization (2004)
Iliev, Ilian T., Scannapieco, Evan, Shapiro, Paul R.
The propagation of cosmological ionization fronts during the reionization of the universe is strongly influenced by small-scale gas inhomogeneities due to structure formation. These inhomogeneities...
Toward an Improved Analytical Description of Lagrangian Bias (2004)
Scannapieco, Evan, Thacker, Robert J.
We carry out a detailed numerical investigation of the spatial correlation function of the initial positions of cosmological dark matter halos. In this Lagrangian coordinate system, which is...
Triggering the Formation of Halo Globular Clusters with Galaxy Outflows (2004)
Scannapieco, Evan, Weisheit, Jon, Harlow, Francis
We investigate the interactions of high-redshift galaxy outflows with low-mass virialized (Tvir < 10,000K) clouds of primordial composition. While atomic cooling allows star formation in larger...
Quasar Feedback: the Missing Link in Structure Formation (2004)
Scannapieco, Evan, Oh, S. Peng
We consider the impact of quasar outflows on structure formation. Such outflows are potentially more important than galactic winds, which appear insufficient to produce the level of preheating...
Temporal Bias in the Clustering of Massive Cosmological Objects (2003)
Scannapieco, Evan, Thacker, Robert J.
It is a well-established fact that massive cosmological objects exhibit a ``geometrical bias'' that boosts their spatial correlations with respect to the underlying mass distribution. Although this...
The Clustering of Intergalactic Metals (2003)
Pichon, Christophe, Scannapieco, Evan, Aracil, Bastien, Petitjean, Patrick, Aubert, Dominique, Bergeron, Jacqueline, ...
We measure the spatial clustering of metals in the intergalactic medium from z = 1.7 to 3.0, as traced by 643 CIV and 104 SiIV N >= 10^12 cm^-2 absorption systems in 19 high signal-to-noise (40-80)...
On the Spatial Correlations of Lyman Break Galaxies (2003)
Scannapieco, Evan, Thacker, Robert J.
Motivated by the observed discrepancy between the strong spatial correlations of Lyman break galaxies (LBGs) and their velocity dispersions, we consider a theoretical model in which these...
On the Detectability of the Cosmic Dark Ages: 21-cm Lines from Minihalos (2003)
Martel, Hugo, Shapiro, Paul R., Iliev, Ilian T., Scannapieco, Evan, Ferrara, Andrea
In the standard Cold Dark Matter (CDM) theory of structure formation, virialized minihalos (with T_vir = 10,000 K or less) form in abundance at high redshift (z > 6), during the cosmic "dark ages."...
The Detectability of the First Stars and Their Cluster Enrichment Signatures (2003)
Scannapieco, Evan, Schneider, Raffaella, Ferrara, Andrea
We conduct a comprehensive investigation of the detectability of the first stars and their enrichment signatures in galaxy clusters. We show that the mean metallicity of outflows from objects...
sources of intergalactic metals Elektronische Daten (2003)
Eidgenössische Technische Hochschule (Zürich) Institut Für Astronomie, Scannapieco, Evan, Pichon, Christophe, Astrophysics Conference
Talk Abstract von Kongress: Star and Structure Formation: From First Light to the Milky Way, Astrophysics Conference, August 18-22, 2003, ETH Zurich, Switzerland
Iliev, Ilian T., Scannapieco, Evan, Martel, Hugo, Shapiro, Paul R.
Hydrogen atoms inside virialized minihalos generate a radiation background from redshifted 21-cm line emission whose angular fluctuations reflect clustering during before and during reionization. We...
Feedback Processes in Early-Type Galaxies (2002)
Ferreras, Ignacio, Scannapieco, Evan, Silk, Joseph
We present a phenomenological model of feedback in early-type galaxies that tracks the evolution of the interstellar medium gas mass, metallicity, and temperature. Modeling the star formation rate as...
An Analytical Approach to Inhomogeneous Structure Formation (2002)
Scannapieco, Evan, Barkana, Rennan
We develop an analytical formalism that is suitable for studying inhomogeneous structure formation, by studying the joint statistics of dark matter halos forming at two points. Extending the Bond et...
Early Enrichment of the Intergalactic Medium and its Feedback on Galaxy Formation (2002)
Scannapieco, Evan, Ferrara, Andrea, Madau, Piero
Supernova-driven outflows from early galaxies may have had a large impact on the kinetic and chemical structure of the intergalactic medium (IGM). We use three-dimensional Monte Carlo cosmological...
How is the Reionization Epoch Defined? (2002)
Bruscoli, Marialuce, Ferrara, Andrea, Scannapieco, Evan
We study the effect of a prolonged epoch of reionization on the angular power spectrum of the Cosmic Microwave Background. Typically reionization studies assume a sudden phase transition, with the...
The role of heating and enrichment in structure formation / (2001)
Thesis (Ph. D.)--University of California, Berkeley, 2001.
Scannapieco, Evan, Broadhurst, Tom
We compare the metallicity distribution of Galactic Halo stars with 3D realizations of hierarchical galaxy formation. Outflows from dwarf galaxies enrich the intergalactic medium inhomogeneously, at...
High-Redshift Galaxy Outflows and the Formation of Dwarf Galaxies (2000)
Scannapieco, Evan, Thacker, Robert J., Davis, Marc
We examine the effects of galaxy outflows on the formation of dwarf galaxies in numerical simulations of the high-redshift Universe. Using a Smoothed Particle Hydrodynamic code, we conduct two...
The Influence of Galactic Outflows on the Formation of Nearby Dwarf Galaxies (2000)
Scannapieco, Evan, Ferrara, Andrea, Broadhurst, Tom
We show that the gas in growing density perturbations is vulnerable to the influence of winds outflowing from nearby collapsed galaxies that have already formed stars. This suggests that the...
The Role of Heating and Enrichment in Galaxy Formation (2000)
Scannapieco, Evan, Broadhurst, Tom
We show that the winds identified with high-redshift low-mass galaxies may strongly affect the formation of stars in more massive galaxies that form later. With 3D realizations of a simple linear...
Is There a Detectable Vishniac Effect? (2000)
The dominant linear contribution to cosmic microwave background (CMB) fluctuations at small angular scales (less than one arcsec) is a second-order contribution known as the Vishniac or...
Detecting the Gravitational Redshift of Cluster Gas (1999)
Broadhurst, Tom, Scannapieco, Evan
We examine the gravitational redshift of radiation emitted from within the potential of a cluster. Spectral lines from the intracluster medium (ICM) are redshifted in proportion to the...
Lensing-Induced Structure of Submillimeter Sources: Implications for the Microwave Background (1999)
Scannapieco, Evan, Silk, Joseph, Tan, Jonathan C.
We consider the effect of lensing by galaxy clusters on the angular distribution of submillimeter wavelength objects. While lensing does not change the total flux and number counts of submillimeter...
WOMBAT & FORECAST: Making Realistic Maps of the Microwave Sky (1999)
Jaffe, Andrew H., Gawiser, Eric, Finkbeiner, Douglas, Baker, Joanne C., Balbi, Amedeo, Davis, Marc, ...
The Wavelength-Oriented Microwave Background Analysis Team (WOMBAT) is constructing microwave maps which will be more realistic than previous simulations. Our foreground models represent a...
The WOMBAT Challenge: A "Hounds and Hares" Exercise for Cosmology (1998)
Gawiser, Eric, Finkbeiner, Douglas, Jaffe, Andrew, Baker, Joanne C., Balbi, Amedeo, Davis, Marc, ...
The Wavelength-Oriented Microwave Background Analysis Team (WOMBAT) is constructing microwave skymaps which will be more realistic than previous simulations. Our foreground models represent a...
Temperature Correlations in a Finite Universe (1998)
Scannapieco, Evan, Levin, Janna, Silk, Joseph
We study the effect of a finite topology on the temperature correlations of the cosmic microwave background in a flat universe. Analytic expressions for the angular power spectrum are given for all...
How the Universe got its Spots (1998)
Levin, Janna, Scannapieco, Evan, De Gasperis, Giancarlo, Silk, Joseph, Barrow, John D.
The universe displays a three-dimensional pattern of hot and cold spots in the radiation remnant from the big bang. The global geometry of the universe can be revealed in the spatial distribution of...
The topology of the universe: the biggest manifold of them all (1998)
Levin, Janna, Scannapieco, Evan, Silk, Joseph
Clues as to the geometry of the universe are encoded in the cosmic background radiation. Hot and cold spots in the primordial radiation may be randomly distributed in an infinite universe while in a...
Is The Universe Infinite Or Is It Just Really Big? (1998)
Levin, Janna, Scannapieco, Evan, Silk, Joseph
The global geometry of the universe is in principle as observable an attribute as local curvature. Previous studies have established that if the universe is wrapped into a flat hypertorus, the...
Coherent Photons and Pomerons in Heavy Ion Collisions (1997)
Klein, Spencer, Scannapieco, Evan
Ultrarelativistic heavy ion beams carry large electromagnetic and strong absorptive fields, allowing exploration of a variety of physics. Two-photon, photon-Pomeron, and double Pomeron interactions...
The Gold Flashlight: Coherent Photons (and Pomerons) at RHIC (1997)
Klein, Spencer, Scannapieco, Evan
The Relativistic Heavy Ion Collider (RHIC) will be the first heavy ion accelerator energetic enough to produce hadronic final states via coherent \gamgam, \gampom, and \pompom interactions. Because...