Conveners
Gravitational kHz waves - LIGO-Virgo-KAGRA: Thursday block 1
- Barbara Patricelli ()
- Barbara Patricelli ()
- Giulia Stratta (Goethe University Frankfurt)
Gravitational kHz waves - LIGO-Virgo-KAGRA: Thursday block 2
- Barbara Patricelli ()
- Giulia Stratta (Goethe University Frankfurt)
- Barbara Patricelli ()
Description
Since September 2015, more than one hundred gravitational wave (GW) sources have been discovered so far in the GW frequency range where current ground-based GW interferometers are sensitive (i.e. few Hz up to few kHz). Most of them have been identified as binary (stellar mass) black hole (BBH) mergers while two of them were consistent with neutron star binary mergers (BNS) and one with a merger of a BH with another compact object that could be a heavy NS or a light BH, falling in the still unexplored “mass gap” range. Only for the BNS GW 170817, an electromagnetic counterpart was detected in the form of a short GRB followed by a kilonova plus a non-thermal afterglow emission.
In this session we aim to make the status of the art of the discoveries achieved so far, their implications and future perspectives. Among the welcome thematics we highlight:
1. GW source properties obtained from LIGO-Virgo-KAGRA observations so far;
2. Observed and expected electromagnetic and neutrino counterparts of gravitational kHz wave sources;
3. Future observations of gravitational kHz wave sources.
During the fourth observing run of the LVK collaboration, we have already seen large improvements in the results produced by the search pipelines in low-latency. We have reached new levels of sensitivity and reliability. In the quest to detect every gravitational wave out there, we are now more ready than ever to participate in the next multimessenger event. During this fourth observing run,...
The first detection of a gravitational-wave signal emitted by a compact binary coalescence was achieved by the network of two LIGO detectors on September 14, 2015. The event, labelled GW150914, is associated with a binary black hole merger. It ushered the era of GW astronomy, offering a new way to probe our Universe.
Since then, during its first three observing runs, the LIGO-Virgo-KAGRA...
Third generation ground-based gravitational wave detectors will broaden our view of the Universe. In the meantime, upgrade programs as Virgo_nEXT are planned to boost the sensitivity of existing detectors such as Advanced Virgo in the post-O5 time frame. In particular, improving the sensitivity at low frequencies will enable the detection of coalescences of higher mass black holes and allow...
GEO 600 has been operating as a gravitational wave detector routinely since before the advanced detector era in mode known as "astrowatch". While exploring new technologies in large scale interferometry we keep the detector in an operational state allowing for calibrated data production. Technology highlights pioneered at GEO at high frequencies include the application of squeezing. That and...
Supernova gravitational waves are the next candidates to those from the compact binary mergers. The gravitational waves generally depend on the supernova models, such as the progenitor mass and equation of state (EOS) for a higher-density region. So, even if one succeeds in detecting them in the future, it may be difficult to extract physical information from them. Up to now, the supernova...
The search for continuous wave (CW) sources represents a new frontier of gravitational wave astronomy. The current and future LVK science runs may eventually reach the required sensitivities for the first detection of a rotating, distorted NS. At the same time, increasing efforts are being devoted to the search of long-transient signals (a few hours long) from newly born magnetars, a special...
Multimessenger astrophysics provides unique and valuable insights into the properties and processes of the physical universe. The recent discovery of gravitational waves and high energy cosmic neutrinos, marked the beginning of a new era of the multimessenger astronomy. These new messengers, along with electromagnetic radiation and cosmic rays, give new insights into the most extreme...
The International Virtual Observatory Alliance (IVOA) plays a crucial global role in establishing technical standards necessary for realizing the Virtual Observatory (VO). Our discussion focuses on the extensive adoption of the Multi-Order Coverage map (MOC) data structure for encoding the localization regions of gravitational wave sources detected by the LIGO, Virgo, and KAGRA (LVK)...
The search and characterization of the electromagnetic counterparts of gravitational wave emitters requires the collaborative efforts of researchers with both theoretical and observational expertise extending over the full range of the electromagnetic spectrum. The lessons learned from the first two observing runs of the advanced interferometers and the successful story of the detection of the...
Multimessenger signals from binary neutron star (BNS) mergers are promising tools to infer the largely unknown properties of nuclear matter at densities that are presently inac- cessible to laboratory experiments. The gravitational waves (GWs) emitted by BNS merger remnants, in particular, have the potential of setting tight constraints on the neutron- star equation of state (EOS) that would...
