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Young Researchers Meeting In Rome 2012

20 January 2012
Aula Grassano - Dipartimento di Fisica - Università degli Studi di Roma
Europe/Rome timezone

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0. Welcome
20/01/2012, 09:00
1. Vacua of Maximal Supergravity and the cosmological constant
20/01/2012, 09:20
I will discuss recent developments in the construction of supergravity models in four dimensions with gauge interactions and in the identification of their vacua. The issue of stability of these solutions will be addressed and a link between gauge interactions and allowed values of the cosmological constant will be discussed. I will also outline an interesting structure that arises among the...
2. Extra U(1) and Asymmetry
20/01/2012, 09:40
Among the possible beyond the standard model (BSM) physics extra neutral gauge Z's are theoretically one of the well motivated. The measurement of the asymmetry at the LHC has been showed to be very important to detect this Z's and to point out some of their properties. We have calculated the asymmetry at the LHC for a model in which the MSSM is extended by an extra U(1) gauge symmetry...
3. A Model Independent General Search for New Physics in ATLAS
20/01/2012, 10:00
The start of the Large Hadron Collider in 2009 has opened a new window for high energy physics. It is expected to provide answers to some of the long-standing questions in particle physics; namely the details of the electroweak symmetry breaking mechanism in the Standard Model, and the possibility of new and exotic physics at the TeV-scale. In this talk preliminary results of a novel model...
4. Measurement of Z-boson forward-backward asymmetry in the muon channel with the ATLAS experiment at the LHC
20/01/2012, 10:20
The V-A nature of the electroweak current leads to an asymmetry in the lepton polar angle distribution in the rest frame of Z/γ* boson: the measurement of such a quantity, around the Z pole, can provide a precise determination of the weak mixing angle of the Standard Model. In this contribution, the asymmetry measurement in the muon channel will be presented with data collected with the ATLAS...
21. Planetary Waves in the Martian Atmosphere observed with PFS/MEX Data
20/01/2012, 10:40
22. A spectroscopic view of the Carina dwarf Spheroidal galaxy
20/01/2012, 10:45
23. Exact solutions of Einstein and Einstein-Maxwell gravity minimally coupled to a scalar field
20/01/2012, 10:50
24. "Computer aided measurement laser (CAML): Technique to quantify post-mastectomy lymphoedema
20/01/2012, 10:55
25. "Oximetry: a new non invasive method to detect metabolic effects induced by a local application of mechanical vibration
20/01/2012, 11:00
20. VISTA for DREAMS-ExoMars 2016 / Venus cloud properties inferred by limb darkening curves
20/01/2012, 11:05
6. Kaonic atoms measurements at the DAFNE collider: the SIDDHARTA experiment
20/01/2012, 11:40
Kaonic Hydrogen and Helium X-ray measurements play nowadays a fundamental role in testing the reliability of the Chiral Perturbation Theory as a different realisation of Quantum Chromodynamics at low energies. Dictated by both electromagnetic and strong interaction, X-ray transitions at lower energy levels of these complex bound systems offer indeed the unique opportunity to perform a...
7. Monte Carlo simulations of microbeam radiation therapy with carbon ions for an interleaved irradiation geometry
20/01/2012, 12:00
Microbeam Radiation Therapy (MRT) uses an array of parallel microbeams in order to spare normal tissue and preferentially damage tumors. In this study, dose-distribution calculations for interleaved microbeam radiation therapy were performed with carbon ions, using the Monte Carlo code MCNPX. The dose was calculated in a rabbit head model to study brain-cancer treatment using ion microbeams....
8. The ALTEA and ALTEA-Shield experiment onboard the International Space Station
20/01/2012, 12:20
Anomalous Long Term Effects in Astronaut’s Central Nervous System (ALTEA) is a helmet-shaped device holding six silicon particle detectors that has been used to measure the effect of the exposure of crewmembers to cosmic radiation on brain activity and visual perception, including astronauts’ perceptions of light flashes behind their eyelids as a result of high-energy radiation. Because of its...
9. Direct proof of Cosmic Ray acceleration by Supernova Remnants with the AGILE satellite
20/01/2012, 12:40
On behalf of AGILE team, I present our work on cosmic-ray acceleration by the some Supernova Remnants, focusing on the SNR W44. Recent analyses suggest that several SNR observations can be understood in terms of hadrons accelerated in correspondence of the SNR forward shock. Until now, however, the leptonic contribution can not be definitely excluded. In the gamma energy band, Fermi/LAT...
10. Distance and Geometry of the Magellanic Clouds using the Period Wesenheit Relations of Classical Cepheids
20/01/2012, 14:20
Classical Cepheids play a key role in constraining the astronomic distances. They are very bright variable stars, so they can be observed at great distances, and they obey to a well known Period Luminosity Relation (PL), so we can use the measured pulsation period and the observed magnitude to estimate the absolute magnitude. According to theoretical models the PL relation is expected to...
11. Optical identifications of celestial high energy sources with the Telescopio Nazionale Galileo
20/01/2012, 14:40
To ascertain the nature of celestial high energy sources, it is crucial to identify their optical counterparts. However, the currently available astronomical public optical databases do not provide an adequate support for a systematic high energy sources identification work. In particular, the optical limiting magnitude represents a severe limitation since the deepest flux limits reached by...
12. Galaxy clusters mass measurements techniques
20/01/2012, 15:00
Galaxy clusters are the largest gravitationally bounded objects in the Universe. They are massive structures (M = 10^13 - 10^15 M_sun) containing tens to hundreds of galaxies interacting in a common potential well. Observations show that 10-20% of the total mass is made by hot (T=10^7-10^8 K) and diffuse ne= 10^(-4) - 10^(-2) cm^(-1) called IntraClusterMedium(ICM), emitting in the X-Ray band...
28. Fisher constraints on isocurvature models: axion and curvaton scenarios
20/01/2012, 15:30
14. Evolving X-ray Polarimetry towards high energy and solar science
20/01/2012, 15:50
The Sun is an astrophysical source with a strong emission in the X-ray band. The study of solar flares is a key point for understanding the behaviour of the magnetic field of our star. In literature there are a lot of theories about polarization predictions, for a wide range of solar flares models but observations in the X-ray band have never been exhaustive. I will explore the possibility to...
15. The birth of "Tor Vergata" Fabry-Pérot interferometer
20/01/2012, 16:40
Fabry-Pérot tunable filters are of great interest in high spectral resolution imaging for both ground-based and space astronomical observations. The prototype here presented has been developed as part of the study for the narrow band channel of the ADAHELI mission. The ADvanced Astronomy for HELIophysics (ADAHELI) is a solar satellite designed to investigate the dynamics of solar atmosphere...
17. Structural, electronic and optical properties of the two isomers of Si(111)2x1
20/01/2012, 17:00
The Si(111)2x1 surface, which appears on cleaved surfaces at low and room temperature, has been among the most studied semiconductor surfaces ever. Although apparently simple, it shows several intriguing and not completely understood features. The atomic structure of the Si(111)2x1 surface has been known for decades to consist of Pandey chains [1], that can tilt with two possible directions,...
18. Gibbs and Helmholtz ensembles for flexible and semiflexible polymers with elastic bonds
20/01/2012, 17:20
Stretching experiments on arbitrarily long single molecules opened the way for studying the statistical mechanics of small systems. In many cases in which the thermodynamic limit is not satisfied, different macroscopic boundary conditions, corresponding to different statistical mechanics ensembles, yield different macroscopic force-displacement curves, or constitutive equations. We formulate...
19. Final remarks
20/01/2012, 17:40
27. (no title)
5. Introduction to poster session
26. Registration
16. Ultrafast optical spectroscopy techniques to study new nano-crystals materials for applications in optoelectronics and photonics
In this work I studied the functioning of new materials by means of ultrafast optical spectroscopy techniques. In particular, these new nanomaterials will emit or absorb light efficiently so that they can be used as LED, Lasers, photodetectors, solar cells and other similar applications of new concepts. For the characterization of these materials I have used the following experimental...
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