activity
20172026
most citedThe second data release from the European Pulsar Timing Array III. Search for gravitational wave signals

1k citations · 2.6k across the 45 of their papers we have counts for

collaborators

48 papers

astro-ph.GA2026

Cosmic Duets II. Growth and accretion in Gaia Multi-Peak dual AGN at Cosmic Noon

M. Scialpi, F. Mannucci, D. Izquierdo-Villalba +36

We present the first statistical characterization of the physical properties of Cosmic Duets: dual AGN in the redshift range 0.5 z 3.0 with projected separations of 1…

astro-ph.GA2026

The LISA Astrophysics MBHcatalogues Project: A comparison of predictions of simulated massive black hole binaries

David Izquierdo-Villalba, Melanie Habouzit, Matteo Bonetti +67

In the hierarchical paradigm of galaxy formation, central massive black holes (MBHs) are expected to coalesce after the merger of their host galaxies. One of the main goals of the…

astro-ph.GA2026★ 1 cited

Overmassive and Undermassive Massive Black Holes: The Role of Environment and Gravitational-Wave Recoils

David Izquierdo-Villalba

Understanding the connection between galaxy properties and their central massive black holes (MBHs) is key to unveiling their co-evolution. We use the ${\tt L{-}Galaxies{-} \it BH}…

astro-ph.CO2025★ 3 cited

Bright siren without electromagnetic counterpart by LISA-Taiji-TianQin network

Yejing Zhan, David Izquierdo-Villalba, Xiao Guo +3

Gravitational waves (GWs) with electromagnetic counterparts (EMc) offer a novel approach to measure the Hubble constant (), known as bright sirens, enabling measurements…

astro-ph.GA2025★ 1 cited

Constraints on the early growth of massive black holes from PTA and JWST with L-GalaxiesBH

Silvia Bonoli, David Izquierdo-Villalba, Daniele Spinoso +4

Recent Pulsar Timing Arrays (PTAs) results provided strong evidence for a stochastic gravitational wave background (sGWB), consistent with a population of merging massive black hol…

astro-ph.GA2025

Off-center black hole seed formation? Implications for high and low redshift massive black holes

David Izquierdo-Villalba, Daniele Spinoso, Marta Volonteri +3

Recent studies show that light seeds of black holes, which grow into massive black holes (MBHs) over time, often struggle to remain at the centers of their birthplaces in high-reds…

astro-ph.HE2025★ 2 cited

Identifying massive black hole binaries via light curve variability in optical time-domain surveys

Alfredo Chiesa, David Izquierdo-Villalba, Alberto Sesana +5

Accreting massive black hole binaries (MBHBs) often display periodic variations in their emitted radiation, providing a distinctive signature for their identification. In this work…

astro-ph.GA2025★ 4 cited

Dissecting the nanohertz gravitational wave sky: Frequency-correlated anisotropy induced by eccentric supermassive black hole binaries

Beatrice Eleonora Moreschi, Serena Valtolina, Alberto Sesana +5

Revealing the nature of the nanohertz gravitational wave (GW) signal recently reported by pulsar timing array (PTA) collaborations around the world is the next goal of low-frequenc…

astro-ph.GA2025★ 1 cited

Massive Star Clusters in the Semi-Analytical Galaxy Formation Model L-Galaxies 2020

Nils Hoyer, Silvia Bonoli, Nate Bastian +7

It is established that there exists a direct link between the formation history of star cluster populations and their host galaxies. However, our lack of understanding of the assem…

astro-ph.GA2025★ 1 cited

Lighting up the nano-hertz gravitational wave sky: opportunities and challenges of multimessenger astronomy with PTA experiments

Riccardo J. Truant, David Izquierdo-Villalba, Alberto Sesana +4

Pulsar Timing Array (PTA) experiments have the potential to unveil continuous gravitational wave (CGW) signals from individual massive black hole binaries (MBHBs). Detecting them i…

astro-ph.CO2024

Searches for signatures of ultra-light axion dark matter in polarimetry data of the European Pulsar Timing Array

N. K. Porayko, P. Usynina, J. Terol-Calvo +74

Ultra-light axion-like particles (ALPs) can be a viable solution to the dark matter problem. The scalar field associated with ALPs, coupled to the electromagnetic field, acts as an…

astro-ph.HE2024★ 11 cited

Stars or gas? Constraining the hardening processes of massive black-hole binaries with LISA

Alice Spadaro, Riccardo Buscicchio, David Izquierdo-Villalba +3

Massive black-hole binaries will be the loudest sources detectable by LISA. These systems are predicted to form during the hierarchical assembly of cosmic structures and coalesce b…

astro-ph.GA2024★ 11 cited

Resolving the nano-Hz gravitational wave sky: the detectability of eccentric binaries with PTA experiments

Riccardo J. Truant, David Izquierdo-Villalba, Alberto Sesana +2

Pulsar Timing Array (PTA) collaborations reported evidence of a nano-Hz stochastic gravitational wave background (sGWB) compatible with an adiabatically inspiraling population of m…

astro-ph.CO2024

High-definition imaging of a filamentary connection between a close quasar pair at z=3

Davide Tornotti, Michele Fumagalli, Matteo Fossati +16

Filaments connecting halos are a long-standing prediction of cold dark matter theories. We present a detection of the cosmic web emission connecting two quasar-host galaxies at red…

astro-ph.GA2024★ 1 cited

A link to the past: characterizing wandering black holes in Milky Way-type galaxies

Julen Untzaga, Silvia Bonoli, David Izquierdo-Villalba +2

A population of non-stellar black holes (100 M) has been long predicted to wander the Milky Way. We aim to characterize this population by using the L-Galaxies s…

astro-ph.GA2024

The rise and fall of bars in disc galaxies from to . The role of the environment

Yetli Rosas-Guevara, Silvia Bonoli, Carmen Misa Moreira +1

We investigate the influence of the environment on the evolution of barred and unbarred disc galaxies with a mass $>10^{10}\Msun$ from z=1 down to z=0, employing the TNG50 magnetic…

astro-ph.GA2024★ 1 cited

Connecting low-redshift LISA massive black hole mergers to the nHz stochastic gravitational wave background

David Izquierdo-Villalba, Alberto Sesana, Monica Colpi +4

Pulsar Timing Array (PTA) experiments worldwide recently reported evidence of a nHz stochastic gravitational wave background (sGWB) compatible with the existence of slowly inspiral…

astro-ph.HE2023★ 12 cited

Demographics of Tidal Disruption Events with L-Galaxies: I. Volumetric TDE rates and the abundance of Nuclear Star Clusters

M. Polkas, S. Bonoli, E. Bortolas +5

Stars can be ripped apart by tidal forces in the vicinity of a massive black hole (MBH), causing luminous flares known as tidal disruption events (TDEs). These events could be cont…

astro-ph.GA2023★ 1 cited

Massive Black Holes in Galactic Nuclei

David Izquierdo-Villalba, Alessandro Lupi, John Regan +2

Massive black holes are key inhabitants of the nuclei of galaxies. Moreover, their astrophysical relevance has gained significant traction in recent years, thanks especially to the…

astro-ph.HE2023

Comparing recent PTA results on the nanohertz stochastic gravitational wave background

The International Pulsar Timing Array Collaboration, G. Agazie, J. Antoniadis +242

The Australian, Chinese, European, Indian, and North American pulsar timing array (PTA) collaborations recently reported, at varying levels, evidence for the presence of a nanohert…

astro-ph.GA2023★ 5 cited

The miniJPAS & J-NEP surveys: Identification and characterization of the Ly Emitter population and the Ly Luminosity Function

Alberto Torralba-Torregrosa, Siddhartha Gurung-López, Pablo Arnalte-Mur +27

We present the Lyman- (Lya) Luminosity Function (LF) at , estimated from a sample of 67 Lya-emitter (LAE) candidates in the J-PAS Pathfinder surveys: miniJPAS and J…

astro-ph.HE2023★ 320 cited

The second data release from the European Pulsar Timing Array I. The dataset and timing analysis

J. Antoniadis, S. Babak, A. -S. Bak Nielsen +66

Pulsar timing arrays offer a probe of the low-frequency gravitational wave spectrum (1 - 100 nanohertz), which is intimately connected to a number of markers that can uniquely trac…

astro-ph.HE2023★ 1k cited

The second data release from the European Pulsar Timing Array III. Search for gravitational wave signals

J. Antoniadis, P. Arumugam, S. Arumugam +95

We present the results of the search for an isotropic stochastic gravitational wave background (GWB) at nanohertz frequencies using the second data release of the European Pulsar T…

astro-ph.HE2023★ 79 cited

The second data release from the European Pulsar Timing Array: VI. Challenging the ultralight dark matter paradigm

Clemente Smarra, Boris Goncharov, Enrico Barausse +68

Pulsar Timing Array experiments probe the presence of possible scalar or pseudoscalar ultralight dark matter particles through decade-long timing of an ensemble of galactic millise…