Franco Vazza



Home page for
turbulent and shocking thoughts


RESEARCH HIGHLIGHTS


TURBULENCE IN THE
INTRA CLUSTER MEDIUM

with Gadget  with ENZO


THE MAGNETISED COSMIC WEB
AND THE ORIGIN OF COSMIC
MAGNETISM

Chronos project 2014



KEY PROJECT 2009 ON
MASSIVE GALAXY CLUSTERS

with ENZO


MOVIES on Youtube Channel



Turbulence at high resolution with ENZO

The evolution of the kinetic energy spectrum with AMR
 
Temperature, Mach number & turbulence with AMR


Projected dissipated energy flux at shocks


Time evolution of shock Mach number distribution
from z=30 to z=0


Volume rendering of gas density for a large 300Mpc^3 box using 2048^3 cells

 
 


Master Degree Thesis (2004) (download 6.46 Mb postcript file)
PhD Thesis (2009)(download 20 Mb pdf file)
CURRICULUM VITAE
LECTURES
Non-thermal phenomena in galaxy clusters (2011, italian)


A FEW RANDOM TALKS AVAILABLE FROM THE WEB




ARTICLES

2005.    1.    Turbulent gas motions in galaxy cluster simulations: the role of smoothed particle hydrodynamics viscosity    (Dolag, K.; Vazza, F.; Tormen, G.; Brunetti, G ; 2005MNRAS.364..753D)
2006.    2.    Turbulent velocity fields in smoothed particle hydrodymanics simulated galaxy clusters: scaling laws for the turbulent energy  (Vazza, F.; Tormen, G.; Cassano, R.; Brunetti, G.; Dolag, K. -   2006MNRAS.369L..14V )
2009.    3.    Cosmological Shocks in Eulerian Simulations: Main Properties and Cosmic Rays Acceleration  (Vazza F., Brunetti G., Gheller C,  2009MSAIS..13..151V)
             4.    Shocks Waves in Eulerian Cosmological Simulations: Main Properties and Cosmic Rays Acceleration  (Vazza, F.; Brunetti, G. & Gheller, C. -    2009MNRAS.395.1333V)
             5.    Turbulent Motions and Shocks Waves in Galaxy Clusters simulated with AMR   (Vazza, F.; Brunetti, G.; Kritsuk, A.; Wagner, R.; Gheller, C.; . Norman, M2009A&A...504...33V HIGHLIGHT OF A&A Sept.09, vol.II)
2010.    6.    The Mixing and Transport Properties of the Simulated ICM: a Study with Tracers     (Vazza, F. ; Gheller, C.; Brunetti G.   -  2010A&A...513A..32V )
             7.    Massive and Refined: a sample of large galaxy clusters simulated at high resolution. I:Thermal gas and shock waves properties     (Vazza, F.; Brunetti, G.; Gheller, C.; Brunino, R. -  2010NewA...15..695V - New Astronomy)
2011.    8.     The entropy core in galaxy clusters: numerical and physical effects in cosmological grid simulations   (Vazza, F. -  2011MNRAS.410..461V - MNRAS)
             9. Massive and Refined. II. The statistical properties of turbulent motions in massive galaxy clusters with high spatial resolution (Vazza, F.; Brunetti, G.; Gheller, C.; Brunino, R.; Brüggen, M  2011A&A...529A..17V  A&A)
          10. The scatter in the radial profiles of X-ray luminous galaxy clusters as   diagnostic of the thermodynamical state of the ICM (F.Vazza, M.Roncarelli, S.Ettori, K.Dolag  2011MNRAS.413.2305V MNRAS)
          11. Merger and non-merger galaxy clusters in cosmological AMR simulations  (F.Vazza,     proceeding of Nice conference, Nov 2010 2011MmSAI..82..609V)
          12. A Comparison of Cosmological Codes: Properties of Thermal Gas and Shock Waves in Large Scale Structures (F.Vazza, K.Dolag, D.Ryu, G.Brunetti, C.Gheller, H.Kang, C.Pfrommer,2011MNRAS.418..960V MNRAS, )

2012. 13. The injection and feedback of Cosmic Rays in large-scale structures (Vazza, F.; Brueggen, M.; Gheller, C.; Brunetti, G., Conf.proceeding  2012ASPC..453..311V)
          14. The gas distribution in galaxy cluster outer regions (Eckert, D.; Vazza, F.; Ettori, S.; Molendi, S.; Nagai, D.; Lau, E. T.; Roncarelli, M.; Rossetti, M.; Snowden, S. L.; Gastaldello, F.,   2012A&A...541A..57E A&A.)
          15. Why are central radio relics so rare? (Vazza, F., Bruggen M.,Van Weeren R., Bonafede A., Dolag K., Brunetti G., 2012MNRAS.421.1868V , MNRAS)
          16. Modelling injection and feedback of Cosmic Rays in grid-based cosmological simulations: effects on cluster outskirts. (Vazza F., Bruggen M., Gheller C., Brunetti G., 2012MNRAS.421.3375V MNRAS)
          17. Turbulence in the ICM from mergers, cool-core sloshing and jets: results from a new multi-scale filtering approach. (Vazza F., E. Roediger, Bruggen M. , 2012A&A...544A.103V A&A)
          18. Discovery of radio halos and double-relics in distant MACS galaxy clusters: clues to the efficiency of particle acceleration (Bonafede, A.; Brueggen, M; van Weeren, R.; Vazza, F.; et al.,  2012MNRAS.426...40B,, MNRAS)
2013.  19. Thermal and non-thermal traces of AGN feedback: results from cosmological AMR simulations (Vazza, F.;,Brueggen M., Gheller C.,    2013MNRAS.428.2366V , MNRAS)
           20. Properties of gas clumps and gas clumping factor in the intra cluster medium (Vazza, F.;Eckert D.; Simionescu A.; Brueggen M.; Ettori S. 2013MNRAS.429..799V, MNRAS)
           21.The X-ray/SZ view of the virial region. I. Thermodynamic properties, (  Eckert, D.; Molendi, S.; Vazza, F.;Ettori, S.; Paltani, S. 2013A&A...551A..22E, A&A)
          22.The X-ray/SZ view of the virial region. II. Gas mass fraction (Eckert, D.; Ettori, S.; Molendi, S.; Vazza, F.; Paltani, S., 2013A&A...551A..23E A&A)
          23. Measurements and simulation of Faraday rotation across the Coma radio relic (Bonafede, A.; Vazza, F.; Brüggen, M.; Murgia, M.; Govoni, F.; Feretti, L.; Giovannini, G.; Ogrean, G.,  2013MNRAS.433.3208B, MNRAS

2014.
24. Do radio relics challenge diffusive shock acceleration? (Vazza, F. & Bruggen, M.), 2014MNRAS.437.2291V, MNRAS)
          25.Gas clumping in galaxy clusters (Eckert, D.; Ettori, S.; Molendi, S.; Vazza, F.; Roncarelli, M.; Gastaldello, F.; Rossetti, M.) 2013arXiv1310.8389E
          26. Simulations of cosmic rays in large-scale structures: numerical and physical effects (Vazza, F., Gheller C., Brüggen,
  2014MNRAS.439.2662V  MNRAS)
          27. On the amplification of magnetic fields in cosmic filaments and galaxy clusters (Vazza F., Brüggen M.,Gheller C.,Wang P.,
2014MNRAS.445.3706V,  MNRAS)
          28. A new double radio relic in PSZ1 G096.89+24.17 and a radio relic mass-luminosity relation ( de Gasperin, F.; van Weeren, R. J.; Brüggen, M.; Vazza, F.; Bonafede, A.; Intema, H. T., 2014MNRAS.444.3130D, MNRAS)


2015.   29. Non-thermal emission from galaxy clusters: feasibility study with SKA1 (Ferrari C. et al., 2014arXiv1412.5801F, to be published in the AASKA SKA White Book 2015).
          30. Numerical cosmology on the GPU with Enzo and Ramses (Gheller, C.; Wang, P.; Vazza, F.; Teyssier, R., 2014arXiv1412.0934G).
          31. Influence of adaptive mesh refinement and the hydro solver on shear-induced mass stripping in a minor-merger scenario (Schmidt, W.; Schulz, J.; Iapichino, L.; Vazza, F.; Almgren, A. S., 2014arXiv1411.7275S  accepted for publication by Astronomy and Computing)

        32. Turbulence in the Intracluster Medium ( Brüggen, M.; Vazza, F., 2015ASSL..407..599B, Chapter of the Book " Magnetic Fields in Diffuse Media", Astrophysics and Space Science Library)
        33. Unravelling the origin of large-scale magnetic fields in galaxy clusters and beyond through Faraday Rotation Measures with the SKA (Bonafede, A., Vazza, F., et al. 2015, 2015arXiv150100321B to be published in the AASKA SKA White Book 2015).
         34. 
Filaments of the radio cosmic web: opportunities and challenges for SKA (Vazza F., Ferrari C., Bonafede A., et al. 2015, 2015arXiv150100315V  to be published in the AASKA SKA White Book 2015).
       35.   Constraining the electron and proton acceleration efficiencies in merger shocks in galaxy clusters (Vazza F.,  Eckert D., Brueggen M., Huber B.   2015arXiv150502782V MNRAS)
       36.  Forecast for the detection of the magnetised cosmic web from cosmological simulations  (Vazza F., Ferrari C., Brueggen M., Bonafede A., Gheller C., Wang P.,  2015arXiv150308983V A&A in press)
       37. Properties of Cosmological Filaments extracted from Eulerian Simulations (C.Gheller, F. Vazza, J. Favre, M. Brueggen, 2015arXiv150705806G MNRAS in press)
   
number of citations
h-index: 17
First author h-index: 13




Press Releases, General Public & Media

News on Highlight of A&A (Sept II 2009) 
Inaf News about Key Project 2009     (in Italian)
"Ammassi di Galassie, megalopoli della materia" in Le Stelle of March 2009 (in italian)   also here
"L'Universo nei computer" in Le Stelle of Jan 2011 (in Italian) also here
"A volo d'aquila nell'Universo Locale" in Le Stelle of Jan 2014 (Italian)
"Ma l'astronomia a cosa serve?" in Le Stelle of Jun 2014 (Italian)
"Stelle, galassi e bytes" public conference in Lugano
"Cosmic particle accelerators" (news on Hamburg Observatory portal)
Borgia Prize from Accademia dei Lincei (June 2014), press:   (1)  (2)  (3)
Press release by CSCS-ETH (1)




HAPPY (AND HONOURED) OF COLLABORATING WITH:

Marcus Brűggen - Hamburg Obs. (Hamburg)
Gianfranco Brunetti - IRA - INAF (Bologna)
Claudio Gheller - CSCS (Lugano)
Dominque Eckert - ISDC Data Centre for Astrophysics

Annalisa Bonafede - Hamburg Obs. (Hamburg)
Thomas W. Jones (Minneapolis)
Dongsu Ryu (Daejon)
Stefano Ettori - OaBo (Bologna)

Klaus Dolag - Munich Observatory (Munchen)


PRIVATE


go to Hamburger Sternwarte (Hamburg)
go to Radio Astronomy Institute (Bologna)


drop me an Email: franco.vazza AT hs.uni-hamburg.de