Prof.
stavros katsanevas
(university Paris 7/IN2P3/CNRS)
01/03/18, 09:10
Invited
I will review the recently published roadmap of Astroparticle Physics by the AstroParticle Physics European Consortium (APPEC). I will in particular concentrate on the future challenges for European and Global Astroparticle Physics, with a special emphasis on the impact of the discovery of gravitational waves.
Michele Punturo
(PG)
01/03/18, 09:40
(Toward) the 3rd generation of GW observatories: Einstein Telescope
Dr.
Antoine PETITEAU
(APC - Université Paris-Diderot)
01/03/18, 10:10
The excellent results of the LISAPathfinder mission gave the green light for LISA mission. ESA approved the LISA mission as the large mission on the theme "The Gravitational Universe". This future observatory will observe gravitational wave from space between 0.02mHz and 1Hz, opening a new window on the Universe complementary to LIGO/Virgo and Pulsar Timing Array. The expected sources are...
Sig.
Jerome Degallaix
(Laboratoire des Matériaux Avancés - CNRS)
01/03/18, 11:10
Upgrade from second generation interferometers and third generation ones will require larger size optics as well as new material substrates to handle low temperatures. In parallel to this technological challenges, a worldwide intensive research is underway to lower the coating thermal noise from the mirrors.
In this presentation, we will review the technological development and future plans...
Daniel Penkert
(AEI Hannover)
01/03/18, 11:40
The space-borne gravitational wave observatory LISA aims to measure sources in the 0.1 mHz to 1 Hz frequency range. Core to this measurement is the optical readout of differential path lengths between free-floating test masses aboard three satellites orbiting the sun in a tilted cartwheel formation. On average, the satellites’ positions form an equilateral triangle of 2.5 million km...
Dr.
Shtefan Danilishin
(University of Glasgow)
01/03/18, 14:00
It is hard to overestimate the scientific significance of the 6 confirmed detections of gravitational waves from compact binary sources that Advanced LIGO and Advanced Virgo have jointly made. However, it is still a long way ahead until the sensitivity of GW detectors is high enough to make them fully fledged astronomical tools. The main hindrance on this way remains the quantum noise, the...
Sig.ra
Stefanie Kroker
(PTB and TU Braunschweig)
01/03/18, 14:30
Thermal noise is known to be a crucial limitation for high precision sensing devices like future gravitational wave detectors or lasers with extreme narrow linewidths. Mitigating Brownian thermal noise as an important issue requires the reduction of the mechanical loss of involved materials and/or their deliberate spatial distribution. In this contribution we discuss the influence of...
Dr.
Antoine PETITEAU
(APC - Université Paris-Diderot)
01/03/18, 17:10
The LISA is an approved L3 ESA-NASA mission which aims at detecting gravitational wave signal in the milli-Hertz band. We are organizing set of LISA data challenges. The objectives of these challenges are 3-fold: (i) to release the data set which respects the latest changes in the LISA design and follows certain standards, this data will be open to anyone who wants to try their own data...
Dr.
Lorenzo Amati
(INAF - IASF Bologna)
01/03/18, 17:50
The Transient High-Energy Sky and Early Universe Surveyor (THESEUS) is a space mission concept aimed at exploiting Gamma-Ray Bursts for investigating the early Universe and at providing a substantial advancement of multi-messenger and time-domain astrophysics. These goals will be achieved through a unique combination of instruments allowing GRBs and X-ray transients detection over a broad FOV...
Dr.
Aniello Grado
(INAF-Osservatorio Astronomico di Capodimonte)
01/03/18, 18:10
The discovery of the GW170817's optical counterpart has shown the wealth of information and science that can be gathered from such findings.
As foreseen from theories and verified with the last GW event on the O2 run, the merging of two binary neutron stars produce a bright optical counterpart. The same is expected in the BH-NS coalescence while more controversial is the case of merging of...
Giovanni Andrea Prodi
(TIFP)
02/03/18, 09:00
Germano Nardini
(University of Bern)
02/03/18, 11:20
In this talk we review why the measurement of the stochastic gravitational wave background can shed light on the particle content of the Universe. We moreover sketch some popular particle physics theories for which LISA can prove the existence of new physics before colliders.
Prof.
Emre Kahya
(Istanbul Technical University)
02/03/18, 11:40
The gravitational wave (GW) signal (GW170817) from the coalescence of binary neutron stars was simultaneously seen throughout the electromagnetic (EM) spectrum from radio waves to gamma-rays. We point out that this simultaneous detection rules out a class of modified gravity theories, and provides another indirect evidence for the existence dark matter.
Dr.
Sheng Yang
(Observatory of Padova, INAF)
02/03/18, 12:00
During the second science run(O2) of the Laser Interferometer gravitational-wave Observatory (LIGO) and Virgo Interferometer, a gravitational-wave signal consistent with a binary neutron star coalescence(BNS) was detected on 2017 August 17th (GW170817), quickly followed by a coincident short gamma-ray burst(GRB170817a) trigger by the Fermi satellite. 10 hours later, 6 groups independently...
Dr.
Philippe BOUYER
(CNRS - IOGS)
02/03/18, 14:00
I will review the progress towards large-scale differential gravitational measurement is using an array of Atom Interferometers (AIs) configured to differentiate Newtonian Noise, geodetic signal and GW detection. In this gravitation antenna, each of the AIs measures the local gradient of gravitational acceleration and the correlation between distant sensors enables to cancel out fluctuations...
Sig.
Miguel Dovale-Alvarez
(University of Birmingham)
02/03/18, 14:30
Atom interferometers employing optical cavities to enhance the beam splitter pulses promise significant advances in science and technology, notably for future gravitational wave detectors. Long cavities, on the scale of hundreds of meters, have been proposed in experiments aiming to observe gravitational waves with frequencies below 1 Hz, where laser interferometers, such as LIGO, have poor...
Giuliana Russano
(Università di Trento/TIFPA)
02/03/18, 15:10
The relative acceleration between two test masses free falling in orbit is perturbed by the presence of a larger constant relative acceleration that must be actively compensated in order to keep the test bodies centered inside the orbiting apparatus. The actuation force applied to compensate this effect can be applied continuously or can be limited to brief impulses, with test masses in a...
Dr.
Mario Spera
(University of Innsbruck)
02/03/18, 16:40
The first confirmation of the existence of merging stellar-mass
black holes (BHs) came on September 14 2015, when the LIGO interferometers observed the gravitational-wave signal from the merger of two BHs with mass larger than 25 Msun (GW150914). Since then, four additional BH mergers were observed, and two of them have BHs with mass larger than 30 Msun. From the theoretical point of view,...
Nicola Giacobbo
(University of Padova)
02/03/18, 17:10
The recent detection of gravitational waves has proven the existence of massive stellar black hole binaries (BHBs), but the formation channels of BHBs are still an open question. Population-synthesis codes are one of the most powerful tools to investigate the origin of BHBs. In this talk, I describe my new code MOBSE, which is an updated version of the widely used binary population synthesis...
Sig.na
Elisa Bortolas
(INAF-OAPd / University of Padova)
02/03/18, 17:50
Super-massive black hole binaries (BHBs) are expected to be one of the most powerful sources of low-frequency gravitational waves (GWs) accessible to the forthcoming LISA mission. BHBs are believed to form in the late stages of galaxy mergers, then harden by close encounters with interacting stars, until GWs lead the BHBs to coalescence. In this talk, I will discuss how the encounter between a...
