40 citations · 190 across the 21 of their papers we have counts for
22 papers
Euclid: Data Release 1 (DR1) -- Fornax-7, an ultra-faint companion to the Fornax dwarf spheroidal galaxy? A remote star cluster or dwarf satellite of the Fornax dSph
T. Saifollahi, A. Lançon, A. M. N. Ferguson +165
We report the discovery of an ultra-faint stellar system in the vicinity of the Fornax dwarf spheroidal (dSph) galaxy in Euclid DR1. This system, which we designate Fornax-7, is lo…
Constraints on the fuzzy dark matter mass using globular clusters in dwarf galaxies from Euclid ERO data
Lisa Besnard, Pierre Boldrini, Paola Di Matteo +2
We constrain the particle mass of the fuzzy dark matter model using globular cluster candidates in dwarf galaxies, from the Euclid Early Release Observations, within the Fornax and…
Distinguishing cold and self-interacting dark matter through topological analysis
Adrian Szpilfidel, Clotilde Laigle, Pierre Boldrini +2
Alternative dark matter (DM) models have emerged to solve the challenges faced by the predictions of collisionless cold dark matter (CDM) on galactic scales ( Mpc). How…
Neighbors, Not Kin: Kinematic evidence for tidal tails from NGC 7492 along the Sagittarius stream
Camila Navarrete, Álvaro Rojas-Arriagada, Andrés E. Piatti +8
The formation, extension, and morphology of extra-tidal stars around globular clusters depend on the internal kinematics of the host cluster and the Galactic potential. Tracing the…
In-situ globular clusters in alternative dark matter Milky Way galaxies: a first approach to fuzzy and core-like dark matter theories
Pierre Boldrini, Paola Di Matteo
We present a first analysis of the dynamics of in-situ globular clusters (GCs) in Milky Way (MW)-like galaxies embedded in fuzzy dark matter (FDM) halos, combining cosmological ass…
Fuzzy dark matter dynamical friction: stalling of globular clusters induced by dynamical heatings
Adrian Szpilfidel, Pierre Boldrini, Jo Bovy +1
We present a new implementation of fuzzy dark matter (FDM) dynamical friction within the galpy framework, enabling orbital integrations of globular clusters (GCs) across a broad ra…
A new classification of ex-situ and in-situ Galactic globular clusters based on a method trained on Milky Way analogues in the TNG50 cosmological simulations
Pierre Boldrini, Paola Di Matteo, Chervin Laporte +3
We present a novel method combining existing cosmological simulations and orbital integration to study the hierarchical assembly of globular cluster (GC) populations in the Milky W…
Euclid Quick Data Release (Q1). The role of cosmic connectivity in shaping galaxy clusters
Euclid Collaboration, C. Gouin, C. Laigle +337
The matter distribution around galaxy clusters is distributed over several filaments, reflecting their positions as nodes in the large-scale cosmic web. The number of filaments con…
Euclid preparation. LVIII. Detecting globular clusters in the Euclid survey
Euclid Collaboration, K. Voggel, A. Lançon +270
Extragalactic globular clusters (EGCs) are an abundant and powerful tracer of galaxy dynamics and formation, and their own formation and evolution is also a matter of extensive deb…
Distinguish dark matter theories with the cosmic web and next-generation surveys I: an alternative theory of gravity
Pierre Boldrini, Clotilde Laigle
In the context of future large surveys like the Euclid mission, extracting the cosmic web from galaxies at higher redshifts with more statistical power will become feasible, partic…
Off-centre supermassive black holes in bright central galaxies
Aline Chu, Pierre Boldrini, Joe Silk
Supermassive black holes (SMBHs) are believed to reside at the centre of massive galaxies such as brightest cluster galaxies (BCGs). However, as BCGs experienced numerous galaxy me…
The cusp-core problem in gas-poor dwarf spheroidal galaxies
Pierre Boldrini
This review deals with the inconsistency of inner dark matter density profiles in dwarf galaxies, known as the cusp-core problem. Particularly, we aim to focus on gas-poor dwarf ga…
Properties of globular clusters formed in dark matter mini-halos
Eduardo Vitral, Pierre Boldrini
We seek to differentiate dynamical and morphological attributes between globular clusters (GCs) that were formed inside their own dark matter (DM) mini-halo, and those who were not…
No globular cluster progenitors in Milky Way satellite galaxies
Pierre Boldrini, Jo Bovy
In order to find the possible progenitors of Milky Way globular clusters, we perform orbit integrations to track the orbits of 170 Galactic globular clusters and the eleven classic…
Absence of obvious tidal tails around the globular cluster NGC 6397
Pierre Boldrini, Eduardo Vitral
In this work, we use body simulations performed on GPU to trace the past 10 Gyr dynamical history of a globular cluster (GC) similar to NGC~6397 in the tidal field of a Milky W…
The origin of the black hole offset in M31
Pierre Boldrini
Using state-of-the-art high-resolution fully GPU N-body simulations, we demonstrate for the first time that the infall of a dark matter rich satellite naturally explains a present…
Subhalo sinking and off-center massive black holes in dwarf galaxies
Pierre Boldrini, Roya Mohayaee, Joseph Silk
Using fully GPU -body simulations, we demonstrate for the first time that subhalos sink and transfer energy via dynamical friction into the centres of dwarf galaxies. This dynam…
Flattening of dark matter cusps during mergers: model of M31
Pierre Boldrini, Roya Mohayaee, Joseph Silk
We run high resolution fully GPU N-body simulations to demonstrate that the dark matter distribution in M31 is well-fitted by a core-like profile. Rich observational data especiall…
Embedding globular clusters in dark matter minihalos solves the cusp-core and timing problems in the Fornax dwarf galaxy
Pierre Boldrini, Roya Mohayaee, Joseph Silk
We use a fully GPU -body code to demonstrate that dark matter minihalos, as a new component of globular clusters, resolve both the timing and cusp-core problems in Fornax if the…
Cusp-to-core transition in low-mass dwarf galaxies induced by dynamical heating of cold dark matter by primordial black holes
Pierre Boldrini, Yohei Miki, Alexander Y. Wagner +3
We performed a series of high-resolution -body simulations to examine whether dark matter candidates in the form of primordial black holes (PBHs) can solve the cusp-core problem…
Fornax globular cluster distributions: implications for the cusp-core problem
P. Boldrini, R. Mohayaee, J. Silk
We re-investigate the Fornax cusp-core problem using observational results on the spatial and mass distributions of globular clusters (GCs) in order to put constraints on the dark…
Does Fornax have a cored halo? Implications for the nature of dark matter
P. Boldrini, R. Mohayaee, J. Silk
Fornax is the most massive of the Milky Way dwarf spheroidal galaxies and has five globular clusters orbiting in a dense background of dark matter. Observational analyses suggest t…