INAF-OATS"
INAF-OATS
Trieste (Italy)

Matteo Viel


Welcome to my homepage. I am a Researcher at the Trieste Observatory (INAF-OATS). I was a PPARC Fellow at the Institute of Astronomy of the University of Cambridge and a Research Fellow at Clare Hall College.



Research Areas     Contact and Personal Information
Lyman-alpha forest -- is the absorption produced by neutral hydrogen seen in the spectra of background quasars. I am interested in using the Lyman-alpha forest to recover the linear dark matter power spectrum at scales of 1-40 comoving Mpc which are not probed by other observables.

Cosmological parameters estimation -- When the dark matter power spectrum inferred from Lyman-alpha quasar spectra is combined with the Cosmic Microwave Background data we can get tight constraints on cosmological parameters (sigma_8, n and its running), on slow-roll inflationary models, on the mass of warm dark matter particles such as light gravitinos or sterile neutrinos.

Warm Hot Intergalactic Medium -- I am currently using hydro-dynamical simulations and the Tully catalag of galatic luminosity density in the local universe to study the distribution of warm-hot intergalatic medium and its detectability, focussing in particular on GRBs

The UV background and metal enrichment -- I am using hydro-dynamical simulations to give constraints on the amplitude and shape of the UV background and on the metal enrichment at z=3.

The nature of dark matter -- I am using hydro-dynamical simulations and high resolution data to constraints the properties of dark matter at the small scales (cold/warm dark matter and sterile neutrinos).

Large-scale structure/CMB cross correlation I am investigating cross-correlation of the Lyman-alpha forest flux with CMB lensing and of the quasar distribution with CMB temperature
INAF Osservatorio Astronomico
via Tiepolo 11
I-34143 Trieste
Italy
Tel: +39 040 3199233
Fax: +39 040 3199241
email: viel(at)oats.inaf.it



CV: [pdf-file]

Publications at SPIRES   Publications at ADS  Publications at XXX outreach: ESI-TOPICS THOMSON outreach: RADIOFEST outreach: STREET SCIENCE outreach: DALLE STALLE ALLE STELLE outreach: SIMULATIONS and PUBLIC CONFERENCES

Recent Publications     List of publications     Links
The High Redshift Integrated Sachs-Wolfe Effect
Xia, Viel, Baccigalupi, Matarrese,
PREPRINT arXiv 0907.4753 JCAP in press.

Cosmological and astrophysical constraints from the Lyman-alpha forest flux probability distribution function
Viel, Bolton, Haehnelt,
PREPRINT arXiv 0907.2927 2009 MNRAS Letters.

Damped Lyman-alpha systems in high-resolution hydrodynamical simulations
Tescari, Viel, Tornatore, Borgani
PREPRINT 2009 MNRAS .

Lenses in the forest: cross-correlation of the Lyman-alpha flux with CMB lensing
Vallinotto, Das, Spergel, Viel
PREPRINT 2009 Physical Review Letters .

Realistic sterile neutrino dark matter with keV mass does not contradict cosmological bounds
Boyarsky, Lesgourgues, Ruchayskiy, Viel,
PREPRINT 2009 Physical Review Letters .

Scientific ones:
Astro-ph
ADS
RTN network "The Physics of the IGM"
LUQAS sample
Dipartimento di Fisica Padova
MPA Munich
COSMOS supercomputer DAMTP

Non Scientific ones:
BBC
CNN
La Repubblica
FC Internazionale
Soccer News
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