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Primordial gravitational wave backgrounds from phase transitions with next generation ground based detectors
/ Caprini, Chiara (Geneva U., Dept. Theor. Phys. ; CERN) ; Pujolàs, Oriol (Barcelona, IFAE) ; Quelquejay-Leclere, Hippolyte (APC, Paris) ; Rompineve, Fabrizio (Barcelona, IFAE ; Barcelona, Autonoma U.) ; Steer, Danièle A. (CERN ; APC, Paris ; LPENS, Paris)
Third generation ground-based gravitational wave (GW) detectors, such as Einstein Telescope and Cosmic Explorer, will operate in the $(\text{few}-10^4)$ Hz frequency band, with a boost in sensitivity providing an unprecedented reach into primordial cosmology. [...]
arXiv:2406.02359.
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53.
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Gravitational waves from first-order phase transitions in LISA: reconstruction pipeline and physics interpretation
/ Caprini, Chiara (Geneva U., Dept. Theor. Phys. ; CERN) ; Jinno, Ryusuke (Tokyo U., RESCEU) ; Lewicki, Marek (Warsaw U.) ; Madge, Eric (Weizmann Inst.) ; Merchand, Marco (Royal Inst. Tech., Stockholm ; Stockholm U., OKC) ; Nardini, Germano (Stavanger U.) ; Pieroni, Mauro (CERN) ; Roper Pol, Alberto (Geneva U., Dept. Theor. Phys.) ; Vaskonen, Ville (INFN, Padua ; INFN, Italy ; Unlisted, EE)
/LISA Cosmology Working Group
We develop a tool for the analysis of stochastic gravitational wave backgrounds from cosmological first-order phase transitions with LISA: we initiate a template databank for these signals, prototype their searches, and forecast their reconstruction. The templates encompass the gravitational wave signals sourced by bubble collisions, sound waves and turbulence. [...]
arXiv:2403.03723; LISA-COSWG-24-01; CERN-TH-2024-029.-
2024-10-04 - 54 p.
- Published in : JCAP 2410 (2024) 020
Fulltext: document - PDF; 2403.03723 - PDF;
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LISA Definition Study Report
/ Colpi, Monica (INFN, Milan Bicocca) ; Danzmann, Karsten (Hannover, Max Planck Inst. Grav.) ; Hewitson, Martin (Hannover, Max Planck Inst. Grav.) ; Jetzer, Philippe (U. Zurich (main)) ; Nelemans, Gijs (Nijmegen U., IMAPP) ; Petiteau, Antoine (IRFU, Saclay) ; Shoemaker, David (MIT, MKI) ; Sopuerta, Carlos (ICE, Bellaterra) ; Stebbins, Robin (Colorado U.) ; Tanvir, Nial (Leicester U.) et al.
The Laser Interferometer Space Antenna (LISA) is the first scientific endeavour to detect and study gravitational waves from space. [...]
arXiv:2402.07571.
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155.
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Massive black hole binaries in LISA: constraining cosmological parameters at high redshifts
/ Mangiagli, Alberto (APC, Paris) ; Caprini, Chiara (U. Geneva (main) ; CERN) ; Marsat, Sylvain (L2IT, Toulouse) ; Speri, Lorenzo (Potsdam, Max Planck Inst.) ; Caldwell, Robert R. (Dartmouth Coll.) ; Tamanini, Nicola (L2IT, Toulouse)
One of the scientific objectives of the Laser Interferometer Space Antenna (LISA) is to probe the expansion of the Universe using gravitational wave observations. [...]
arXiv:2312.04632.
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33 p.
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Terrestrial Very-Long-Baseline Atom Interferometry: Workshop Summary
Terrestrial Very-Long-Baseline Atom Interferometry Workshop (TVLBAI 2023)
13 - 14 Mar 2023
- CERN, Geneva, Switzerland
/ Abend, Sven (Leibniz U., Hannover); Allard, Baptiste (LCAR, Toulouse); Alonso, Iván (Balearic Islands U.); Antoniadis, John (Crete U.); Araújo, Henrique (Imperial Coll., London); Arduini, Gianluigi (CERN); Arnold, Aidan S. (SUPA, UK ; Strathclyde U.); Aßmann, Tobias (Ulm U.); Augst, Nadja (DLR, Neustrelitz); Badurina, Leonardo (King's Coll. London ; Caltech) et al.
This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom Interferometry Workshop hosted by CERN. The workshop brought together experts from around the world to discuss the exciting developments in large-scale atom interferometer (AI) prototypes and their potential for detecting ultralight dark matter and gravitational waves. [...]
2023 - 99 p.
arXiv:2310.08183
- Published in : 10.1116/5.0185291
10.1116/5.0185291
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Cosmology with massive black hole binary mergers in the LISA era
/ Mangiagli, Alberto (APC, Paris) ; Caprini, Chiara (Geneva U. ; CERN) ; Volonteri, Marta (Paris, Inst. Astrophys.) ; Marsat, Sylvain (L2IT, Toulouse) ; Vergani, Susanna (LUTH, Meudon ; GEPI, Meudon ; LERMA, Ivry) ; Tamanini, Nicola (L2IT, Toulouse) ; Speri, Lorenzo (Potsdam, Max Planck Inst.)
In $\sim2034$ the Laser Interferometer Space Antenna (LISA) will detect the coalescence of massive black hole binaries (MBHBs) from $10^5$ to $10^7 {\, \rm M}_\odot$ up to $z\sim10$. The gravitational wave (GW) signal is expected to be accompanied by a powerful electromagnetic (EM) counterpart, from radio to X-ray, generated by the gas accreting on the binary.
If LISA locates the MBHB merger within an error box $<10 \, \rm deg^2$, EM telescopes can be pointed in the same portion of the sky to detect the emission from the last stages of the MBHB orbits or the very onset of the nuclear activity, paving the way to test the nature of gas in a rapidly changing space-time. [...]
2022 - 6 p.
- Published in : PoS ICHEP2022 (2022) 125
Fulltext: PDF;
In : 41st International Conference on High Energy Physics (ICHEP 2022), Bologna, Italy, 6 - 13 Jul 2022, pp.125
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Stochastic gravitational wave background from stellar origin binary black holes in LISA
/ Babak, Stanislav (APC, Paris) ; Caprini, Chiara (Geneva U., Dept. Theor. Phys. ; CERN) ; Figueroa, Daniel G. (Valencia U., IFIC) ; Karnesis, Nikolaos (Aristotle U., Thessaloniki) ; Marcoccia, Paolo (Stavanger U.) ; Nardini, Germano (Stavanger U.) ; Pieroni, Mauro (CERN) ; Ricciardone, Angelo (Pisa U. ; Padua U.) ; Sesana, Alberto (Milan Bicocca U. ; INFN, Milan Bicocca ; Brera Observ.) ; Torrado, Jesús (Padua U. ; INFN, Padua)
We use the latest constraints on the population of stellar origin binary black holes (SOBBH) from LIGO/Virgo/KAGRA (LVK) observations, to estimate the stochastic gravitational wave background (SGWB) they generate in the frequency band of LISA. We account for the faint and distant binaries, which contribute the most to the SGWB, by extending the merger rate at high redshift assuming it tracks the star formation rate. [...]
arXiv:2304.06368.-
2023-08-14 - 39 p.
- Published in : JCAP 2308 (2023) 034
Fulltext: 2304.06368 - PDF; document - PDF;
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