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Direttore

Nicola Semprini Cesari

tel: +39 051 2095254

Responsabile Amministrativo

Maria Giovanna Piazza

tel: +39 051 2095257

Portineria sede di via Irnerio

via Irnerio, 46

40126 - Bologna - Italia

tel: +39 051 2091004

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Lunedì-venerdì: ore 7:30-19:00

Portineria DIFA - Sede principale

Dipartimento di Fisica e Astronomia

viale Berti Pichat, 6/2

40127 - Bologna - Italia

tel: +39 051 20 9 5162

fax: +39 051 252774

Orari di apertura
Lunedì-venerdì: ore 7:30-19:00

Portineria DIFA-Settore Astronomia: Navile

via Piero Gobetti 93/2

40129 - Bologna

tel: +39 051 2095809

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Tracing the Universe: new data from the XXL survey support the standard cosmological model

The ESA’s XMM-Newton X-ray observatory has been busy with the XXL survey, its largest observational programme to date. The second batch of data has just been released, including information on 365 galaxy clusters. The data provided a new strong confirmation of the standard cosmological scenario.

Kick-off of the iTHEPHY project at DIFA

On October 30th, 2018, participants of the European iTHEPHY project, coordinated by DIFA, met in video conference to launch the most important phase of the project, the tandem-projects. For five months, international teams of students will collaborate to realize an educational project using innovative teaching tools developed on purpose for them.

News DIFA

Scientific principles and public policy
Climatology and Seismology have important societal implications, but modelers have not made clear what is known, and what isn’t. Public policies on climate change and earthquake hazard mitigation necessarily require the search for consensus, but scientific integrity must be preserved first of all.
Pauli–Zeldovich cancellation of the vacuum energy divergences, auxiliary fields and supersymmetry
We have considered the Pauli-Zeldovich mechanism for the cancellation of the ultraviolet divergences in vacuum energy. This mechanism arises because bosons and fermions give contributions of the opposite signs.
Emergence of a dark force in corpuscular gravity
A unified description is proposed for the quantum state of the gravitational field of the Universe is proposed which accounts for dark energy and dark matter.
Phase Transitions in Zn Gauge Models: Towards Quantum Simulations of the Schwinger-Weyl QED
We study 1+1-QED by implementing the Schwinger model on a lattice via a Zn approximation. By performing a numerical analysis, we show that all Zn models exhibit a phase transition which falls in the Ising universality class, with spontaneous symmetry breaking of the CP symmetry.
Self-Bound Quantum Droplets of Atomic Mixtures in Free Space
Self-bound quantum droplets are a newly discovered phase in the context of ultracold atoms. Here we report their experimental realization with a mixture of Bose-Einstein condensates.
Charge carrier dynamics and visible light photocatalysis in V-doped TiO2 nanoparticles
Time-resolved pump-probe optical spectroscopy was applied to elucidate the charge carrier dynamics that underlie the photocatalytic activity of vanadium-doped TiO2 NPs, addressing the role of dopants in extending photocatalytic activity in a visible spectral range where pure TiO2 is inactive.
Space environment effects on flexible, low-voltage organic thin film transistors
Organic electronic devices fabricated on flexible substrates are promising candidates for applications in space environments. The effect of high-energy protons on TIPS-pentacene based OTFTs has been investigated, monitoring device parameters such as threshold voltage, charge mobility and trap density.
Dynamics of direct X-ray detection processes in high-Z Bi2O3 nanoparticles-loaded PFO polymer-based diodes
Direct X-ray radiation detectors based on the semiconducting polymer poly(9,9-dioctyfluorene) blended with Bi2O3 nanoparticles, have been realized, combining mechanical flexibility and large-area processing with a high X-ray stopping power and sensitivity.
Deep inside Perseus A–A telescope larger than the Earth makes a sharp image of the formation of black hole jets in the core of a radio galaxy
An international team of researchers from eight different countries has imaged newly forming jets of plasma from a massive black hole with unprecedented accuracy. Radio images made with a combination of telescopes in space (RadioAstron) and on the ground resolve the jet structure merely a couple of hundred black hole radii or 12 light days from its launching site.
The central engine of FR0 radio galaxies unveiled by X-rays
X-ray observations allowed for the first time the characterization of the high-energy properties of FR0 radio galaxies
All-flavor Search for a Diffuse Flux of Cosmic Neutrinos with Nine Years of ANTARES Data
Results of the search for an all-flavor diffuse neutrino signal with 9-years of the ANTARES neutrino telescope data,obtained by two young UniBO and INFN-BO researchers, Luigi Fusco and Federico Versari, highlighted on the web page of the AAS journals.
UniBO wins the national phase of the International Physicists Tournament
The UniBO team wins the national selection of the prestigious International Physicists Tournament and is heading for the international finals in Moscow
Assessment of the possible contribution of space ties on-board GNSS satellites to the terrestrial reference frame
The progress of Earth-System Studies and the reliability of services for civil applications critically depend on the quality of the underlying Terrestrial Reference Frame. For the first time, the authors critically evaluated the performance of an innovative approach for the computation of the frame.
Inauguration of Cuore: the cold giant detector that studies neutrinos
On October 23 2017 the CUORE experiment (Cryogenic Underground Observatory for Rare Events) has been inaugurated at the Italian National Institute for Nuclear Physics Gran Sasso National Laboratories in Italy. CUORE is one of the most promising efforts to determine whether neutrinos are “Majorana particles” – identical to their own antiparticles. CUORE could also help us home in on the masses hierarchy of the three types, or “flavors,” of neutrinos. Physics results, based on two months of data taking, recently submitted to the journal Physical Review Letters, set the most precise limits yet on where scientists might find a theorized process, known as neutrinoless double beta decay.
Shedding a new light on the growth of cosmic magnetic fields
Two new numerical works explored how magnetic fields observed in the largest cosmic structures might have originated.
Identification of a T cell gene expression clock obtained by exploiting a MZ twin design
The authors identify a multivariate signature able to estimate human chronological age from the expression profile of 125 genes, combining Data Analysis tools and a unique experimental design involving monozygotic twins of ages ranging whole adult lifespan.
Direct imaging of defect formation in strained organic flexible electronics by Scanning Kelvin Probe Microscopy
The development of flexible electronics depends crucially on the understanding of how strain affects electronic material properties at the nano-scale. A group of DIFA researchers develops a Scanning Probe Microscopy technique to investigate the formation electronic defects during strain.
Quality Matters: Systematic Analysis of Radiofrequency Electromagnetic Field Exposure
The authors analyze 20 years of publications on the effect of electromagnetic radiofrequency fields (mobile phones and wi-fi): quantifying the goodness of the experiments by 5 indices, the positive results observed show an inverse association with the quality of the experimental protocol applied.
Ocean warming and acidification synergistically increase coral mortality
An experiment performed at CO2 vents in the Mediterranean Sea shows, for the first time in the field, the synergistic adverse effect of seawater warming and acidification on coral mortality. An acidified and warmer ocean will likely reduce the environmental and socioeconomic benefits of ecosystems reliant on calcifying organisms.
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Contatti

Direttore

Nicola Semprini Cesari

tel: +39 051 2095254

Responsabile Amministrativo

Maria Giovanna Piazza

tel: +39 051 2095257

Portineria sede di via Irnerio

via Irnerio, 46

40126 - Bologna - Italia

tel: +39 051 2091004

Orari di apertura
Lunedì-venerdì: ore 7:30-19:00

Portineria DIFA - Sede principale

Dipartimento di Fisica e Astronomia

viale Berti Pichat, 6/2

40127 - Bologna - Italia

tel: +39 051 20 9 5162

fax: +39 051 252774

Orari di apertura
Lunedì-venerdì: ore 7:30-19:00

Portineria DIFA-Settore Astronomia: Navile

via Piero Gobetti 93/2

40129 - Bologna

tel: +39 051 2095809

Orari di apertura
Lunedì-venerdì: ore 8:30-18:30