From elia.battistelli at roma1.infn.it  Tue Mar  6 11:05:16 2018
From: elia.battistelli at roma1.infn.it (Elia Battistelli)
Date: Tue, 06 Mar 2018 11:05:16 +0100
Subject: [astroseminar@Sapienza] today at 16:00: Gianpietro Cagnoli
Message-ID: <3353134182b49e9499b931ca5e4881d6@roma1.infn.it>

Title: High-precision mirrors for low-noise interferometry: the hidden 
quest behind the detection of the Gravitational Waves
Speaker:  Prof. Gianpietro Cagnoli
Institution: Universit? Claude Bernard di Lione
Date: Tuesday, 06 March 2018
Time: 4:00pm
Location: Aula Conversi, Marconi Building, Dept. of Physics, Sapienza 
University

Abstract:
The detection of a GW has become now an ordinary event after the first
detection that hit the news just 2 years ago. Numerous upgrades have 
been
developed and installed one after the other all along the many years
(twenty) since the large interferometers have been built. This 
presentation
considers one of the key elements of the interferometers that made 
possible
to listen the Universe: the mirrors. How they are made, what?s the 
meaning
of high-precision and of low-noise as referred to mirrors and the
challenges that scientists had been confronted to and those that need 
to be
faced in the future will be the main subjects of this presentation.

web: https://agenda.infn.it/conferenceDisplay.py?confId=15283


From elia.battistelli at roma1.infn.it  Tue Mar  6 11:06:37 2018
From: elia.battistelli at roma1.infn.it (Elia Battistelli)
Date: Tue, 06 Mar 2018 11:06:37 +0100
Subject: [astroseminar@Sapienza] today at 17:00: Joris V. van Heijningen
Message-ID: <f6c37da4ded6982d02b449a0fed1201e@roma1.infn.it>

Title: A novel interferometrically read out inertial sensor for future 
gravitational wave detectors
Speaker:   Joris V. van Heijningen
Institution: Nikhef, Amsterdam
Date: Tuesday, 06 March 2018
Time: 5:00pm
Location: Aula Conversi, Marconi Building, Dept. of Physics, Sapienza 
University

Abstract:
We present a novel inertial sensor designed and developed at Nikhef 
that
features an interferometric readout for
a horizontal monolithic accelerometer. It will be able to measure 3 
e-15
m/sqrt(Hz) displacement levels from 20 Hz onwards.
Current results show (self) noise levels of 8 e-15m/sqrt(Hz) from 30 Hz
onwards. Despite these unprecedented results, the
result is worse than the sum of modeled noise contributions. Several
possible unmodeled noise sources and possible solutions
have been identified.

web: https://agenda.infn.it/conferenceDisplay.py?confId=15284

From Paolo.Pani at roma1.infn.it  Mon Mar 19 12:45:47 2018
From: Paolo.Pani at roma1.infn.it (Paolo Pani)
Date: Mon, 19 Mar 2018 12:45:47 +0100
Subject: [astroseminar@Sapienza]  21/03/2018 at 16:00: R. Carballo-Rubio
Message-ID: <CANnYPqLJVtASn_f12tHK4LN=xC_4Nnfz-Sfe9eHjb_pR=6MtwQ@mail.gmail.com>

Title: Semiclassical relativistic stars
Speaker:  R. Carballo-Rubio
Institution: SISSA, Italy
Date: Wednesday, 21 March 2018
Time: 16:00
Location: Aula Conversi, Marconi Building, Dept. of Physics, Sapienza University

Abstract:
The interlacing of general relativity and quantum mechanics, while
still incomplete, has proven to be a driving force for theoretical
research that has sparked the development of new ideas in the areas of
strong gravity, quantum field theory and astrophysics. This talk will
be focused on the description of stellar equilibrium in semiclassical
gravity. I will introduce the notion of quantum vacuum polarization,
discussing why it can be expected to be significant in ultracompact
stellar configurations. I will then summarize the physical effects
that these semiclassical contributions have on the equations of
stellar equilibrium, and discuss the main properties of a family of
exact solutions.

web: https://agenda.infn.it/conferenceDisplay.py?confId=14965

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Paolo Pani
Research Scientist
ERC StG Fellow, http://darkgra.weebly.com/

Physics Department (Marconi Building), 2nd floor, room 202c
Sapienza University of Rome
Piazzale Aldo Moro 5 - 00185 Rome (Italy)

phone: +39 06 4969 4247 [int. 34247]
skype: paolo.pani
webpage: http://roma1.infn.it/~pani
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

