Publications (31)
Evolution of shocks and turbulence in major cluster mergers
S. Paul, L. Iapichino, F. Miniati +2
We performed a set of cosmological simulations of major mergers in galaxy clusters to study the evolution of merger shocks and the subsequent injection of turbulence in the post-sh…
The Zurich Environmental Study (ZENS) of Galaxies in Groups along the Cosmic Web. I. Which Environment Affects Galaxy Evolution?
C. M. Carollo, A. Cibinel, S. J. Lilly +9
The Zurich Environmental Study (ZENS) is based on a sample of ~1500 galaxy members of 141 groups in the mass range ~10^12.5-14.5 M_sun within the narrow redshift range 0.05<z<0.058…
A Global Probe of Cosmic Magnetic Fields to High Redshifts
P. P. Kronberg, M. L. Bernet, F. Miniati +3
Faraday rotation (RM) probes of magnetic fields in the universe are sensitive to cosmological and evolutionary effects as increases beyond 1 because of the scalings of e…
Laboratory realization of relativistic pair-plasma beams
C. D. Arrowsmith, P. Simon, P. Bilbao +26
Relativistic electron-positron plasmas are ubiquitous in extreme astrophysical environments such as black holes and neutron star magnetospheres, where accretion-powered jets and pu…
Time-resolved fast turbulent dynamo in a laser plasma
A. F. A. Bott, P. Tzeferacos, L. Chen +25
Understanding magnetic-field generation and amplification in turbulent plasma is essential to account for observations of magnetic fields in the universe. A theoretical framework a…
The X-ray Zurich Environmental Study (X-ZENS). I. Chandra and XMM-Newton observations of AGNs in galaxies in nearby groups
J. D. Silverman, F. Miniati, A. Finoguenov +4
We describe X-ray observations with Chandra and XMM-Newton of 18 galaxy groups (M_group ~ 1-6x10^13 Msolar, z~0.05) from the Zurich Environmental Study (ZENS). We aim to establish…
The extent of magnetic fields around galaxies out to z ~ 1
M. L. Bernet, F. Miniati, S. J. Lilly
Radio quasar sightlines with strong MgII absorption lines display statistically enhanced Faraday Rotation Measures (RM) indicating the presence of additional magneto-active plasma…
Numerical modeling of laser-driven experiments aiming to demonstrate magnetic field amplification via turbulent dynamo
P. Tzeferacos, A. Rigby, A. Bott +29
The universe is permeated by magnetic fields, with strengths ranging from a femtogauss in the voids between the filaments of galaxy clusters to several teragauss in black holes and…
CRPropa: A Numerical Tool for the Propagation of UHE Cosmic Rays, Gamma-rays and Neutrinos
E. Armengaud, G. Sigl, T. Beau +1
To understand the origin of ultra-high energy cosmic rays (UHECRs, defined to be above 10^18 eV), it is required to model in a realistic way their propagation in the Universe. UHEC…
Enabling Radiative Transfer on AMR grids in CRASH
N. Hariharan, L. Graziani, B. Ciardi +2
We introduce CRASH-AMR, a new version of the cosmological Radiative Transfer (RT) code CRASH, enabled to use refined grids. This new feature allows us to attain higher resolution i…
Measurement of ion acceleration and diffusion in a laser-driven magnetized plasma
J. T. Y. Chu, J. W. D. Halliday, C. Heaton +25
Here we present results from an experiment performed at the GSI Helmholtz Centre for Heavy Ion Research. A mono-energetic beam of chromium ions with initial energies of …
Metagalactic Ultraviolet Flux from Cosmic Structure Formation
F. Miniati
The contribution to the ultraviolet background (UVB) from thermal emission due to gas shock heated during cosmic structure formation is assessed with an updated version of Press-Sc…
Non-thermal particles in the intergalactic and intracluster medium
F. Miniati
I present a review of nonthermal processes in the large scale structure of the universe. After examining the properties of cosmological shock waves and their role as particle accel…
The interpretation of Rotation Measures in the presence of inhomogeneous foreground screens
M. L. Bernet, F. Miniati, S. J. Lilly
We analyze the redshift evolution of the Rotation Measure (RM) in Taylor et al. (2009) dataset, which is based on NVSS radio data at 21 cm, and compare with results from our previo…
ZENS IV. Similar Morphological Changes associated with Mass- and Environment-Quenching, and the Relative importance of Bulge Growth versus the Fading of Disks
C. M. Carollo, A. Cibinel, S. J. Lilly +6
We use ZENS data at low redshift to study the dependence of the quenched satellite fraction and of the morphological mix of these quenched satellites, on three different environmen…
XMM-Newton Witness of M86 X-ray Metamorphosis
A. Finoguenov, W. Pietsch, B. Aschenbach +1
The environmental influence of cluster media on its member galaxies, known as Butcher--Oemler effect, has recently been subject to revision due to numerous observations of strong m…
The Impact of High Pressure Cluster Environment on the X-ray Luminosity of Coma Early-type Galaxies
A. Finoguenov, F. Miniati
We present an observational study of the Lx vs Lb sigma^2 relation for early-type galaxies in the Coma cluster based on the XMM-Newton survey data. Compared to a similar relation f…
Resolution-Independent Machine Learning Heat Flux Closure for ICF Plasmas
M. Luo, A. R. Bell, F. Miniati +2
Accurate modeling of heat flux in inertial confinement fusion plasmas requires closures that remain predictive far from local equilibrium and across disparate spatial and temporal…
MgII absorption systems with W_0 > 0.1 Ã for a radio selected sample of 77 QSOs and their associated magnetic fields at high redshifts
M. L. Bernet, F. Miniati, S. J. Lilly
We present a catalogue of MgII absorption systems obtained from high resolution UVES/VLT data of 77 QSOs in the redshift range 0.6 < z < 2.0, and down to an equivalent width W_0 >…
The Zurich Environmental Study (ZENS) of Galaxies in Groups along the Cosmic Web. V. Properties and Frequency of Merging Satellites and Centrals in Different Environments
A. Pipino, A. Cibinel, S. Tacchella +6
We use the Zurich ENvironmental Study (ZENS) database to investigate the environmental dependence of the merger fraction and merging galaxy properties in a sample of ~1300 gro…
The Luminosity Function of Cluster Radio Relics
M. Bruggen, T. A. Ensslin, F. Miniati
In this paper we compute the luminosity function of radio relics. In our calculation we include only those relics that are produced by the compression of former radio cocoons. This…
Probing Turbulence in the Coma Galaxy Cluster
P. Schuecker, A. Finoguenov, F. Miniati +2
Spatially-resolved gas pressure maps of the Coma galaxy cluster are obtained from a mosaic of XMM-Newton observations in the scale range between a resolution of 20 kpc and an exten…
A Puzzling Merger in A3266: the Hydrodynamic Picture from XMM-Newton
A. Finoguenov, M. J. Henriksen, F. Miniati +2
Using the mosaic of nine XMM-Newton observations, we study the hydrodynamic state of the merging cluster of galaxies Abell 3266. The high quality of the spectroscopic data and larg…
The Zurich Environmental Study (ZENS) of Galaxies in Groups along the Cosmic Web. II. Galaxy Structural Measurements and the Concentration of Morphologically Classified Satellites in Diverse Environments
A. Cibinel, C. M. Carollo, S. J. Lilly +9
We present structural measurements for the galaxies in the 0.05<z<0.0585 groups of the Zurich Environmental Study, aimed at establishing how galaxy properties depend on four enviro…
Radio observations of ZwCl 2341.1+0000: a double radio relic cluster
R. J. van Weeren, H. J. A. Rottgering, J. Bagchi +6
Context: Hierarchal models of large scale structure (LSS) formation predict that galaxy clusters grow via gravitational infall and mergers of (smaller) mass concentrations, such as…
Transport of high-energy charged particles through spatially-intermittent turbulent magnetic fields
L. E. Chen, A. F. A. Bott, P. Tzeferacos +22
Identifying the sources of the highest energy cosmic rays requires understanding how they are deflected by the stochastic, spatially intermittent intergalactic magnetic field. Here…
The Zurich Environmental Study of Galaxies in Groups along the Cosmic Web. III. Galaxy Photometric Measurements and the Spatially-Resolved Color Properties of Early- and Late-Type Satellites in Diverse Environments
A. Cibinel, C. M. Carollo, S. J. Lilly +10
We present photometric measurements for the galaxies - and when possible their bulges and disks - in the 0.05<z<0.0585 groups of the Zurich Environmental Study (ZENS); these measur…
Evolution of shocks and turbulence in the formation of galaxy clusters embedded in Megaparsec-scale filaments
S. Paul, L. Iapichino, F. Miniati +2
Massive structures like cluster of galaxies, embedded in cosmic filaments, release enormous amount of energy through their interactions. These events are associated with production…
Laboratory evidence of dynamo amplification of magnetic fields in a turbulent plasma
P. Tzeferacos, A. Rigby, A. Bott +27
Magnetic fields are ubiquitous in the Universe. Extragalactic disks, halos and clusters have consistently been shown, via diffuse radio-synchrotron emission and Faraday rotation me…
Strong suppression of heat conduction in a laboratory replica of galaxy-cluster turbulent plasmas
J. Meinecke, P. Tzeferacos, J. S. Ross +32
Galaxy clusters are filled with hot, diffuse X-ray emitting plasma, with a stochastically tangled magnetic field whose energy is close to equipartition with the energy of the turbu…
A deep radio and X-ray view of cluster formation at the crossroads of filaments
J. Bagchi, R. J. van Weeren, S. Raychaudhury +6
Deep X-ray data from CHANDRA and XMM-Newton, and GMRT radio data are presented for ZwCl 2341.1+0000, an extremely unusual and complex merging cluster of galaxies at the intersectio…