Conveners
Gravitational Waves detection
- Marco Drago (Istituto Nazionale di Fisica Nucleare)
The Advanced VIRGO detector is currently taking data during the second part of the fourth observation run called O4b, which began last April and is scheduled to finish in spring 2025. In order to detect gravitational waves, VIRGO uses a complex real-time control system consisting of 135 multicore DSP processors and more than 1,000 channels of high-resolution analog inputs and outputs. In this...
In this talk I will discuss in which cases black holes carry a scalar charge, and the implications when the latter scales with the black hole mass. I will talk about the phenomenological consequences of these insights for the physics of compact binaries, and how asymmetric systems evolving in the LISA band are ideal sources for searches of new fundamental fields coupled to gravity. I will lay...
Within the context of Gravitational Waves (GW) detection, interferometric GW detectors have revolutionized astrophysics over the past decade, allowing the detection of relevant cosmic events which were previously unobservable. These instruments are based on the principle of the Michelson interferometer, using resonant Fabry-Perot cavities in which the main optical components (test masses, i.e....
Einstein Telescope will be the European third generation of gravitational wave detectors. It aims to increase the detectable capability of one order of magnitude in the frequency range of the interferometers of the second generation and enlarge the bandwidth down to a few Hertz. The main noise sources at low frequencies are seismic noise (important below a few Hz) and the Newtonian noise (NN)...
Gravitational wave detectors like Virgo and LIGO help us learn more about the universe. A key part of these detectors is the input optics system, which takes care of the optics downstream of the high power laser and delivers the beam into the interferometer. This presentation will explain how this system works and why it’s important.
The input optics system does several important tasks: it...
Millisecond pulsars are extremely stable in their rotation. This stability provides very precise astrophysical timing measurements in the Galaxy. The Pulsar Timing Array (PTA) collaborations use this property to search for Gravitational Waves (GW). Last year, they reported evidence for the presence of a GW signal in their dataset. The main candidate for such a signal is a population of Super...
The detection of gravitational waves has opened a new era in astrophysics, providing unique insights into some of the most energetic events in the universe. Central to the success of detectors such as Virgo and LIGO are advanced optical technologies that enable unprecedented sensitivity and precision.
As we push for higher laser power to reduce shot noise and improve detector sensitivity at...
I will discuss methods, current constraints and future perspectives on the measurement of cosmological paramaters (including the dark energy equation of state and propagation effects from modified gravity) with gravitational wave (GW) events, both in the case of bright and dark sirens. Bright sirens are low-redshift events (thus mostly sensitive to the Hubble constant) with an electromagnetic...
Third generation gravitational wave detectors like the Einstein Telescope will broaden our view of the Universe, thanks to higher sensitivities and broader frequency ranges. Improving the sensitivity in the low-frequency regime will enable the detection of coalescences of higher mass black holes and boost early alert capabilities for binary neutron star mergers, thus increasing the number of...
The INFN research for the development of top sensitivity ring laser gyroscope began about 15 years ago. At that time the aim was to develop top sensitivity tiltmeter for the Virgo suspensions, and the CSN2 has financed a group to develop ring laser gyroscopes for fundamental physics investigation. At present the apparatus GINGER, based on an array of ring lasers, is under construction inside...
The goal of the Archimedes experiment is to investigate the role of the interaction between the vacuum fluctuations and gravitational field. This will be possible thanks to a high sensitivity and cryogenic balance installed in the SarGrav laboratory in the Sos Enattos mine (Sardinia), the Italian candidate site for the third generation gravitational wave observatory Einstein Telescope....
